The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study
Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing fo...
Ausführliche Beschreibung
Autor*in: |
Rahman, Farzana [verfasserIn] Naidu, Ravi [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2009 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Environmental geochemistry and health - Dordrecht [u.a.] : Springer Science + Business Media B.V, 1979, 31(2009), Suppl 1 vom: 19. Feb., Seite 115-124 |
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Übergeordnetes Werk: |
volume:31 ; year:2009 ; number:Suppl 1 ; day:19 ; month:02 ; pages:115-124 |
Links: |
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DOI / URN: |
10.1007/s10653-008-9241-2 |
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Katalog-ID: |
SPR012355968 |
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100 | 1 | |a Rahman, Farzana |e verfasserin |4 aut | |
245 | 1 | 4 | |a The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study |
264 | 1 | |c 2009 | |
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520 | |a Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing four levels of arsenate ($ As^{V} $): 0, 1, 5, and 25 mg As/l and three levels of arsenite ($ As^{III} $): 0, 5, 10 mg As/l. Both $ As^{V} $ and $ As^{III} $ are phytotoxic to these crops with the latter being five times more toxic. Amaranth treated with $ As^{III} $ exhibited As toxicity symptoms within 48 h of exposure and was close to death within 1 week. However, $ As^{V} $ treatment did not show clear toxicity symptoms other than wilting and yield reduction at the highest dose rate of 25 mg $ As^{V} $/l. The main mechanism used by vegetable crops to tolerate $ As^{V} $ is probably avoidance—limiting As transport to shoots and increasing As accumulation in the root system. When $ As^{V} $ was added to the nutrient solution, the uptake of As in shoots increased and, at the highest dose (25 mg $ As^{V} $/l), 60 μg As/g DW (3.6 mg/kg FW) accumulated in the edible portion, which exceeds the WHO recommended limit for food stuffs (2 mg/kg FW) as the water contents of the crops were 94%. It is therefore important to determine the nature of the As species and their bio-accessibility. Iron treatment with 0.5 mg NaFe(III)EDTA/l dose decreased silverbeet As uptake by 45% given its affinity to bind As at the root surface or root rhizosphere and so restrict As translocation to the shoots. | ||
650 | 4 | |a Arsenic speciation |7 (dpeaa)DE-He213 | |
650 | 4 | |a Greenhouse study |7 (dpeaa)DE-He213 | |
650 | 4 | |a Vegetable crops—amaranth and silverbeet |7 (dpeaa)DE-He213 | |
650 | 4 | |a Yield arsenic uptake and translocation |7 (dpeaa)DE-He213 | |
700 | 1 | |a Naidu, Ravi |e verfasserin |4 aut | |
773 | 0 | 8 | |i Enthalten in |t Environmental geochemistry and health |d Dordrecht [u.a.] : Springer Science + Business Media B.V, 1979 |g 31(2009), Suppl 1 vom: 19. Feb., Seite 115-124 |w (DE-627)303390611 |w (DE-600)1494595-2 |x 1573-2983 |7 nnns |
773 | 1 | 8 | |g volume:31 |g year:2009 |g number:Suppl 1 |g day:19 |g month:02 |g pages:115-124 |
856 | 4 | 0 | |u https://dx.doi.org/10.1007/s10653-008-9241-2 |z lizenzpflichtig |3 Volltext |
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951 | |a AR | ||
952 | |d 31 |j 2009 |e Suppl 1 |b 19 |c 02 |h 115-124 |
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publishDate |
2009 |
allfields |
10.1007/s10653-008-9241-2 doi (DE-627)SPR012355968 (SPR)s10653-008-9241-2-e DE-627 ger DE-627 rakwb eng 550 ASE 38.95 bkl 43.13 bkl 43.30 bkl 44.10 bkl Rahman, Farzana verfasserin aut The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing four levels of arsenate ($ As^{V} $): 0, 1, 5, and 25 mg As/l and three levels of arsenite ($ As^{III} $): 0, 5, 10 mg As/l. Both $ As^{V} $ and $ As^{III} $ are phytotoxic to these crops with the latter being five times more toxic. Amaranth treated with $ As^{III} $ exhibited As toxicity symptoms within 48 h of exposure and was close to death within 1 week. However, $ As^{V} $ treatment did not show clear toxicity symptoms other than wilting and yield reduction at the highest dose rate of 25 mg $ As^{V} $/l. The main mechanism used by vegetable crops to tolerate $ As^{V} $ is probably avoidance—limiting As transport to shoots and increasing As accumulation in the root system. When $ As^{V} $ was added to the nutrient solution, the uptake of As in shoots increased and, at the highest dose (25 mg $ As^{V} $/l), 60 μg As/g DW (3.6 mg/kg FW) accumulated in the edible portion, which exceeds the WHO recommended limit for food stuffs (2 mg/kg FW) as the water contents of the crops were 94%. It is therefore important to determine the nature of the As species and their bio-accessibility. Iron treatment with 0.5 mg NaFe(III)EDTA/l dose decreased silverbeet As uptake by 45% given its affinity to bind As at the root surface or root rhizosphere and so restrict As translocation to the shoots. Arsenic speciation (dpeaa)DE-He213 Greenhouse study (dpeaa)DE-He213 Vegetable crops—amaranth and silverbeet (dpeaa)DE-He213 Yield arsenic uptake and translocation (dpeaa)DE-He213 Naidu, Ravi verfasserin aut Enthalten in Environmental geochemistry and health Dordrecht [u.a.] : Springer Science + Business Media B.V, 1979 31(2009), Suppl 1 vom: 19. Feb., Seite 115-124 (DE-627)303390611 (DE-600)1494595-2 1573-2983 nnns volume:31 year:2009 number:Suppl 1 day:19 month:02 pages:115-124 https://dx.doi.org/10.1007/s10653-008-9241-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.95 ASE 43.13 ASE 43.30 ASE 44.10 ASE AR 31 2009 Suppl 1 19 02 115-124 |
spelling |
10.1007/s10653-008-9241-2 doi (DE-627)SPR012355968 (SPR)s10653-008-9241-2-e DE-627 ger DE-627 rakwb eng 550 ASE 38.95 bkl 43.13 bkl 43.30 bkl 44.10 bkl Rahman, Farzana verfasserin aut The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing four levels of arsenate ($ As^{V} $): 0, 1, 5, and 25 mg As/l and three levels of arsenite ($ As^{III} $): 0, 5, 10 mg As/l. Both $ As^{V} $ and $ As^{III} $ are phytotoxic to these crops with the latter being five times more toxic. Amaranth treated with $ As^{III} $ exhibited As toxicity symptoms within 48 h of exposure and was close to death within 1 week. However, $ As^{V} $ treatment did not show clear toxicity symptoms other than wilting and yield reduction at the highest dose rate of 25 mg $ As^{V} $/l. The main mechanism used by vegetable crops to tolerate $ As^{V} $ is probably avoidance—limiting As transport to shoots and increasing As accumulation in the root system. When $ As^{V} $ was added to the nutrient solution, the uptake of As in shoots increased and, at the highest dose (25 mg $ As^{V} $/l), 60 μg As/g DW (3.6 mg/kg FW) accumulated in the edible portion, which exceeds the WHO recommended limit for food stuffs (2 mg/kg FW) as the water contents of the crops were 94%. It is therefore important to determine the nature of the As species and their bio-accessibility. Iron treatment with 0.5 mg NaFe(III)EDTA/l dose decreased silverbeet As uptake by 45% given its affinity to bind As at the root surface or root rhizosphere and so restrict As translocation to the shoots. Arsenic speciation (dpeaa)DE-He213 Greenhouse study (dpeaa)DE-He213 Vegetable crops—amaranth and silverbeet (dpeaa)DE-He213 Yield arsenic uptake and translocation (dpeaa)DE-He213 Naidu, Ravi verfasserin aut Enthalten in Environmental geochemistry and health Dordrecht [u.a.] : Springer Science + Business Media B.V, 1979 31(2009), Suppl 1 vom: 19. Feb., Seite 115-124 (DE-627)303390611 (DE-600)1494595-2 1573-2983 nnns volume:31 year:2009 number:Suppl 1 day:19 month:02 pages:115-124 https://dx.doi.org/10.1007/s10653-008-9241-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.95 ASE 43.13 ASE 43.30 ASE 44.10 ASE AR 31 2009 Suppl 1 19 02 115-124 |
allfields_unstemmed |
10.1007/s10653-008-9241-2 doi (DE-627)SPR012355968 (SPR)s10653-008-9241-2-e DE-627 ger DE-627 rakwb eng 550 ASE 38.95 bkl 43.13 bkl 43.30 bkl 44.10 bkl Rahman, Farzana verfasserin aut The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing four levels of arsenate ($ As^{V} $): 0, 1, 5, and 25 mg As/l and three levels of arsenite ($ As^{III} $): 0, 5, 10 mg As/l. Both $ As^{V} $ and $ As^{III} $ are phytotoxic to these crops with the latter being five times more toxic. Amaranth treated with $ As^{III} $ exhibited As toxicity symptoms within 48 h of exposure and was close to death within 1 week. However, $ As^{V} $ treatment did not show clear toxicity symptoms other than wilting and yield reduction at the highest dose rate of 25 mg $ As^{V} $/l. The main mechanism used by vegetable crops to tolerate $ As^{V} $ is probably avoidance—limiting As transport to shoots and increasing As accumulation in the root system. When $ As^{V} $ was added to the nutrient solution, the uptake of As in shoots increased and, at the highest dose (25 mg $ As^{V} $/l), 60 μg As/g DW (3.6 mg/kg FW) accumulated in the edible portion, which exceeds the WHO recommended limit for food stuffs (2 mg/kg FW) as the water contents of the crops were 94%. It is therefore important to determine the nature of the As species and their bio-accessibility. Iron treatment with 0.5 mg NaFe(III)EDTA/l dose decreased silverbeet As uptake by 45% given its affinity to bind As at the root surface or root rhizosphere and so restrict As translocation to the shoots. Arsenic speciation (dpeaa)DE-He213 Greenhouse study (dpeaa)DE-He213 Vegetable crops—amaranth and silverbeet (dpeaa)DE-He213 Yield arsenic uptake and translocation (dpeaa)DE-He213 Naidu, Ravi verfasserin aut Enthalten in Environmental geochemistry and health Dordrecht [u.a.] : Springer Science + Business Media B.V, 1979 31(2009), Suppl 1 vom: 19. Feb., Seite 115-124 (DE-627)303390611 (DE-600)1494595-2 1573-2983 nnns volume:31 year:2009 number:Suppl 1 day:19 month:02 pages:115-124 https://dx.doi.org/10.1007/s10653-008-9241-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.95 ASE 43.13 ASE 43.30 ASE 44.10 ASE AR 31 2009 Suppl 1 19 02 115-124 |
allfieldsGer |
10.1007/s10653-008-9241-2 doi (DE-627)SPR012355968 (SPR)s10653-008-9241-2-e DE-627 ger DE-627 rakwb eng 550 ASE 38.95 bkl 43.13 bkl 43.30 bkl 44.10 bkl Rahman, Farzana verfasserin aut The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing four levels of arsenate ($ As^{V} $): 0, 1, 5, and 25 mg As/l and three levels of arsenite ($ As^{III} $): 0, 5, 10 mg As/l. Both $ As^{V} $ and $ As^{III} $ are phytotoxic to these crops with the latter being five times more toxic. Amaranth treated with $ As^{III} $ exhibited As toxicity symptoms within 48 h of exposure and was close to death within 1 week. However, $ As^{V} $ treatment did not show clear toxicity symptoms other than wilting and yield reduction at the highest dose rate of 25 mg $ As^{V} $/l. The main mechanism used by vegetable crops to tolerate $ As^{V} $ is probably avoidance—limiting As transport to shoots and increasing As accumulation in the root system. When $ As^{V} $ was added to the nutrient solution, the uptake of As in shoots increased and, at the highest dose (25 mg $ As^{V} $/l), 60 μg As/g DW (3.6 mg/kg FW) accumulated in the edible portion, which exceeds the WHO recommended limit for food stuffs (2 mg/kg FW) as the water contents of the crops were 94%. It is therefore important to determine the nature of the As species and their bio-accessibility. Iron treatment with 0.5 mg NaFe(III)EDTA/l dose decreased silverbeet As uptake by 45% given its affinity to bind As at the root surface or root rhizosphere and so restrict As translocation to the shoots. Arsenic speciation (dpeaa)DE-He213 Greenhouse study (dpeaa)DE-He213 Vegetable crops—amaranth and silverbeet (dpeaa)DE-He213 Yield arsenic uptake and translocation (dpeaa)DE-He213 Naidu, Ravi verfasserin aut Enthalten in Environmental geochemistry and health Dordrecht [u.a.] : Springer Science + Business Media B.V, 1979 31(2009), Suppl 1 vom: 19. Feb., Seite 115-124 (DE-627)303390611 (DE-600)1494595-2 1573-2983 nnns volume:31 year:2009 number:Suppl 1 day:19 month:02 pages:115-124 https://dx.doi.org/10.1007/s10653-008-9241-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.95 ASE 43.13 ASE 43.30 ASE 44.10 ASE AR 31 2009 Suppl 1 19 02 115-124 |
allfieldsSound |
10.1007/s10653-008-9241-2 doi (DE-627)SPR012355968 (SPR)s10653-008-9241-2-e DE-627 ger DE-627 rakwb eng 550 ASE 38.95 bkl 43.13 bkl 43.30 bkl 44.10 bkl Rahman, Farzana verfasserin aut The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing four levels of arsenate ($ As^{V} $): 0, 1, 5, and 25 mg As/l and three levels of arsenite ($ As^{III} $): 0, 5, 10 mg As/l. Both $ As^{V} $ and $ As^{III} $ are phytotoxic to these crops with the latter being five times more toxic. Amaranth treated with $ As^{III} $ exhibited As toxicity symptoms within 48 h of exposure and was close to death within 1 week. However, $ As^{V} $ treatment did not show clear toxicity symptoms other than wilting and yield reduction at the highest dose rate of 25 mg $ As^{V} $/l. The main mechanism used by vegetable crops to tolerate $ As^{V} $ is probably avoidance—limiting As transport to shoots and increasing As accumulation in the root system. When $ As^{V} $ was added to the nutrient solution, the uptake of As in shoots increased and, at the highest dose (25 mg $ As^{V} $/l), 60 μg As/g DW (3.6 mg/kg FW) accumulated in the edible portion, which exceeds the WHO recommended limit for food stuffs (2 mg/kg FW) as the water contents of the crops were 94%. It is therefore important to determine the nature of the As species and their bio-accessibility. Iron treatment with 0.5 mg NaFe(III)EDTA/l dose decreased silverbeet As uptake by 45% given its affinity to bind As at the root surface or root rhizosphere and so restrict As translocation to the shoots. Arsenic speciation (dpeaa)DE-He213 Greenhouse study (dpeaa)DE-He213 Vegetable crops—amaranth and silverbeet (dpeaa)DE-He213 Yield arsenic uptake and translocation (dpeaa)DE-He213 Naidu, Ravi verfasserin aut Enthalten in Environmental geochemistry and health Dordrecht [u.a.] : Springer Science + Business Media B.V, 1979 31(2009), Suppl 1 vom: 19. Feb., Seite 115-124 (DE-627)303390611 (DE-600)1494595-2 1573-2983 nnns volume:31 year:2009 number:Suppl 1 day:19 month:02 pages:115-124 https://dx.doi.org/10.1007/s10653-008-9241-2 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.95 ASE 43.13 ASE 43.30 ASE 44.10 ASE AR 31 2009 Suppl 1 19 02 115-124 |
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English |
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Enthalten in Environmental geochemistry and health 31(2009), Suppl 1 vom: 19. Feb., Seite 115-124 volume:31 year:2009 number:Suppl 1 day:19 month:02 pages:115-124 |
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Enthalten in Environmental geochemistry and health 31(2009), Suppl 1 vom: 19. Feb., Seite 115-124 volume:31 year:2009 number:Suppl 1 day:19 month:02 pages:115-124 |
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Arsenic speciation Greenhouse study Vegetable crops—amaranth and silverbeet Yield arsenic uptake and translocation |
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Environmental geochemistry and health |
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Rahman, Farzana @@aut@@ Naidu, Ravi @@aut@@ |
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2009-02-19T00:00:00Z |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR012355968</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20220110233124.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">201005s2009 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1007/s10653-008-9241-2</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR012355968</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s10653-008-9241-2-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">550</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">38.95</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">43.13</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">43.30</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">44.10</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Rahman, Farzana</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="4"><subfield code="a">The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2009</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing four levels of arsenate ($ As^{V} $): 0, 1, 5, and 25 mg As/l and three levels of arsenite ($ As^{III} $): 0, 5, 10 mg As/l. Both $ As^{V} $ and $ As^{III} $ are phytotoxic to these crops with the latter being five times more toxic. Amaranth treated with $ As^{III} $ exhibited As toxicity symptoms within 48 h of exposure and was close to death within 1 week. However, $ As^{V} $ treatment did not show clear toxicity symptoms other than wilting and yield reduction at the highest dose rate of 25 mg $ As^{V} $/l. The main mechanism used by vegetable crops to tolerate $ As^{V} $ is probably avoidance—limiting As transport to shoots and increasing As accumulation in the root system. When $ As^{V} $ was added to the nutrient solution, the uptake of As in shoots increased and, at the highest dose (25 mg $ As^{V} $/l), 60 μg As/g DW (3.6 mg/kg FW) accumulated in the edible portion, which exceeds the WHO recommended limit for food stuffs (2 mg/kg FW) as the water contents of the crops were 94%. It is therefore important to determine the nature of the As species and their bio-accessibility. Iron treatment with 0.5 mg NaFe(III)EDTA/l dose decreased silverbeet As uptake by 45% given its affinity to bind As at the root surface or root rhizosphere and so restrict As translocation to the shoots.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Arsenic speciation</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Greenhouse study</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Vegetable crops—amaranth and silverbeet</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Yield arsenic uptake and translocation</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Naidu, Ravi</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Environmental geochemistry and health</subfield><subfield code="d">Dordrecht [u.a.] : Springer Science + Business Media B.V, 1979</subfield><subfield code="g">31(2009), Suppl 1 vom: 19. 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Rahman, Farzana |
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Rahman, Farzana ddc 550 bkl 38.95 bkl 43.13 bkl 43.30 bkl 44.10 misc Arsenic speciation misc Greenhouse study misc Vegetable crops—amaranth and silverbeet misc Yield arsenic uptake and translocation The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study |
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550 ASE 38.95 bkl 43.13 bkl 43.30 bkl 44.10 bkl The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study Arsenic speciation (dpeaa)DE-He213 Greenhouse study (dpeaa)DE-He213 Vegetable crops—amaranth and silverbeet (dpeaa)DE-He213 Yield arsenic uptake and translocation (dpeaa)DE-He213 |
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The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study |
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The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study |
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Environmental geochemistry and health |
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Rahman, Farzana Naidu, Ravi |
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Elektronische Aufsätze |
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Rahman, Farzana |
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influence of arsenic speciation ($ as^{iii} $ & $ as^{v} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study |
title_auth |
The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study |
abstract |
Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing four levels of arsenate ($ As^{V} $): 0, 1, 5, and 25 mg As/l and three levels of arsenite ($ As^{III} $): 0, 5, 10 mg As/l. Both $ As^{V} $ and $ As^{III} $ are phytotoxic to these crops with the latter being five times more toxic. Amaranth treated with $ As^{III} $ exhibited As toxicity symptoms within 48 h of exposure and was close to death within 1 week. However, $ As^{V} $ treatment did not show clear toxicity symptoms other than wilting and yield reduction at the highest dose rate of 25 mg $ As^{V} $/l. The main mechanism used by vegetable crops to tolerate $ As^{V} $ is probably avoidance—limiting As transport to shoots and increasing As accumulation in the root system. When $ As^{V} $ was added to the nutrient solution, the uptake of As in shoots increased and, at the highest dose (25 mg $ As^{V} $/l), 60 μg As/g DW (3.6 mg/kg FW) accumulated in the edible portion, which exceeds the WHO recommended limit for food stuffs (2 mg/kg FW) as the water contents of the crops were 94%. It is therefore important to determine the nature of the As species and their bio-accessibility. Iron treatment with 0.5 mg NaFe(III)EDTA/l dose decreased silverbeet As uptake by 45% given its affinity to bind As at the root surface or root rhizosphere and so restrict As translocation to the shoots. |
abstractGer |
Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing four levels of arsenate ($ As^{V} $): 0, 1, 5, and 25 mg As/l and three levels of arsenite ($ As^{III} $): 0, 5, 10 mg As/l. Both $ As^{V} $ and $ As^{III} $ are phytotoxic to these crops with the latter being five times more toxic. Amaranth treated with $ As^{III} $ exhibited As toxicity symptoms within 48 h of exposure and was close to death within 1 week. However, $ As^{V} $ treatment did not show clear toxicity symptoms other than wilting and yield reduction at the highest dose rate of 25 mg $ As^{V} $/l. The main mechanism used by vegetable crops to tolerate $ As^{V} $ is probably avoidance—limiting As transport to shoots and increasing As accumulation in the root system. When $ As^{V} $ was added to the nutrient solution, the uptake of As in shoots increased and, at the highest dose (25 mg $ As^{V} $/l), 60 μg As/g DW (3.6 mg/kg FW) accumulated in the edible portion, which exceeds the WHO recommended limit for food stuffs (2 mg/kg FW) as the water contents of the crops were 94%. It is therefore important to determine the nature of the As species and their bio-accessibility. Iron treatment with 0.5 mg NaFe(III)EDTA/l dose decreased silverbeet As uptake by 45% given its affinity to bind As at the root surface or root rhizosphere and so restrict As translocation to the shoots. |
abstract_unstemmed |
Abstract We examined arsenic (As) uptake by vegetable crops (amaranth, Amaranthusgangeticus, and silverbeet, Betavulgaris) as affected by As speciation ($ As^{III} $ and $ As^{V} $) and their concentrations in nutrient solution. Amaranth and silverbeet were grown in a nutrient solution containing four levels of arsenate ($ As^{V} $): 0, 1, 5, and 25 mg As/l and three levels of arsenite ($ As^{III} $): 0, 5, 10 mg As/l. Both $ As^{V} $ and $ As^{III} $ are phytotoxic to these crops with the latter being five times more toxic. Amaranth treated with $ As^{III} $ exhibited As toxicity symptoms within 48 h of exposure and was close to death within 1 week. However, $ As^{V} $ treatment did not show clear toxicity symptoms other than wilting and yield reduction at the highest dose rate of 25 mg $ As^{V} $/l. The main mechanism used by vegetable crops to tolerate $ As^{V} $ is probably avoidance—limiting As transport to shoots and increasing As accumulation in the root system. When $ As^{V} $ was added to the nutrient solution, the uptake of As in shoots increased and, at the highest dose (25 mg $ As^{V} $/l), 60 μg As/g DW (3.6 mg/kg FW) accumulated in the edible portion, which exceeds the WHO recommended limit for food stuffs (2 mg/kg FW) as the water contents of the crops were 94%. It is therefore important to determine the nature of the As species and their bio-accessibility. Iron treatment with 0.5 mg NaFe(III)EDTA/l dose decreased silverbeet As uptake by 45% given its affinity to bind As at the root surface or root rhizosphere and so restrict As translocation to the shoots. |
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container_issue |
Suppl 1 |
title_short |
The influence of arsenic speciation ($ As^{III} $ & $ As^{V} $) and concentration on the growth, uptake and translocation of arsenic in vegetable crops (silverbeet and amaranth): greenhouse study |
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https://dx.doi.org/10.1007/s10653-008-9241-2 |
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score |
7.3985777 |