The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances
Phosphate (PO4 (3-) ) has been reported to suppress arsenate (As(v) ) uptake in plants. However, its effects on controlling the availability of As(v) in tobacco genotypes with different arsenic (As) tolerances has not been fully explored. In the present study, the effects of PO4 (3-) on As(v) uptake...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Zvobgo, Gerald [verfasserIn] |
|---|
| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Rechteinformationen: |
Nutzungsrecht: © 2014 SETAC © 2014 SETAC. |
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| Schlagwörter: |
Lipid Peroxidation - drug effects |
|---|
| Übergeordnetes Werk: |
Enthalten in: Environmental toxicology and chemistry - Pensacola, Fla. : SETAC Press, 1982, 34(2015), 1, Seite 45-52 |
|---|---|
| Übergeordnetes Werk: |
volume:34 ; year:2015 ; number:1 ; pages:45-52 |
| Links: |
|---|
| DOI / URN: |
10.1002/etc.2776 |
|---|
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OLC1957017155 |
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| 245 | 1 | 4 | |a The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances |
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| 520 | |a Phosphate (PO4 (3-) ) has been reported to suppress arsenate (As(v) ) uptake in plants. However, its effects on controlling the availability of As(v) in tobacco genotypes with different arsenic (As) tolerances has not been fully explored. In the present study, the effects of PO4 (3-) on As(v) uptake were investigated in a hydroponic culture using 2 tobacco (Nicotiana tabacum) genotypes (ZY90 and FSMY) that differed in As(v) tolerance. A total of 9 treatment combinations comprising As(v) treatments of 0 µM, 10 µM, and 100 µM and PO4 (3-) treatments of 0 µM, 50 µM, and 500 µM were used. The results showed that ZY90 had greater reductions in leaf photosynthetic parameters, root and shoot dry weight, length, and nutrient content than did FSMY when exposed to As(v) stress. The addition of 500 µM external PO4 (3-) significantly suppressed As(v) (100 µM) uptake in both FSMY and ZY90, with the effect being more pronounced in FSMY. Greater PO4 (3-) uptake in plants significantly reduced the influx of As(v) , causing an increase in photosynthesis and nutrient uptake. Phosphate supply increased superoxide dismutase activity, catalase activity, and malondialdehyde content. The present study showed that PO4 (3-) is an effective competitive inhibitor of As(v) , and it can be effectively used to control As(v) accumulation in tobacco plants. | ||
| 540 | |a Nutzungsrecht: © 2014 SETAC | ||
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| 650 | 4 | |a Tobacco | |
| 650 | 4 | |a Genotype | |
| 650 | 4 | |a Phosphate | |
| 650 | 4 | |a Accumulation | |
| 650 | 4 | |a Arsenate | |
| 650 | 4 | |a Plant Roots - drug effects | |
| 650 | 4 | |a Plant Roots - genetics | |
| 650 | 4 | |a Tobacco - genetics | |
| 650 | 4 | |a Lipid Peroxidation - drug effects | |
| 650 | 4 | |a Photosynthesis - drug effects | |
| 650 | 4 | |a Plant Leaves - drug effects | |
| 650 | 4 | |a Arsenates - toxicity | |
| 650 | 4 | |a Environmental Pollutants - toxicity | |
| 650 | 4 | |a Phosphates - pharmacology | |
| 650 | 4 | |a Plant Leaves - genetics | |
| 650 | 4 | |a Tobacco - metabolism | |
| 650 | 4 | |a Tobacco - drug effects | |
| 650 | 4 | |a Flowers & plants | |
| 650 | 4 | |a Phosphates | |
| 650 | 4 | |a Bioaccumulation | |
| 650 | 4 | |a Photosynthesis | |
| 650 | 4 | |a Arsenic content | |
| 650 | 4 | |a Genotype & phenotype | |
| 700 | 1 | |a Hu, Hongliang |4 oth | |
| 700 | 1 | |a Shang, Shenghua |4 oth | |
| 700 | 1 | |a Shamsi, Imran Haider |4 oth | |
| 700 | 1 | |a Zhang, Guoping |4 oth | |
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10.1002/etc.2776 doi PQ20160617 (DE-627)OLC1957017155 (DE-599)GBVOLC1957017155 (PRQ)p2957-ae2dd27bdce8dbde7856b8b88845cbaaffa4023d228259b8949edaae76f7b5633 (KEY)0137282320150000034000100045effectsofphosphateonarsenicuptakeandtoxicityallevi DE-627 ger DE-627 rakwb eng 570 690 DNB Zvobgo, Gerald verfasserin aut The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Phosphate (PO4 (3-) ) has been reported to suppress arsenate (As(v) ) uptake in plants. However, its effects on controlling the availability of As(v) in tobacco genotypes with different arsenic (As) tolerances has not been fully explored. In the present study, the effects of PO4 (3-) on As(v) uptake were investigated in a hydroponic culture using 2 tobacco (Nicotiana tabacum) genotypes (ZY90 and FSMY) that differed in As(v) tolerance. A total of 9 treatment combinations comprising As(v) treatments of 0 µM, 10 µM, and 100 µM and PO4 (3-) treatments of 0 µM, 50 µM, and 500 µM were used. The results showed that ZY90 had greater reductions in leaf photosynthetic parameters, root and shoot dry weight, length, and nutrient content than did FSMY when exposed to As(v) stress. The addition of 500 µM external PO4 (3-) significantly suppressed As(v) (100 µM) uptake in both FSMY and ZY90, with the effect being more pronounced in FSMY. Greater PO4 (3-) uptake in plants significantly reduced the influx of As(v) , causing an increase in photosynthesis and nutrient uptake. Phosphate supply increased superoxide dismutase activity, catalase activity, and malondialdehyde content. The present study showed that PO4 (3-) is an effective competitive inhibitor of As(v) , and it can be effectively used to control As(v) accumulation in tobacco plants. Nutzungsrecht: © 2014 SETAC © 2014 SETAC. Tobacco Genotype Phosphate Accumulation Arsenate Plant Roots - drug effects Plant Roots - genetics Tobacco - genetics Lipid Peroxidation - drug effects Photosynthesis - drug effects Plant Leaves - drug effects Arsenates - toxicity Environmental Pollutants - toxicity Phosphates - pharmacology Plant Leaves - genetics Tobacco - metabolism Tobacco - drug effects Flowers & plants Phosphates Bioaccumulation Photosynthesis Arsenic content Genotype & phenotype Hu, Hongliang oth Shang, Shenghua oth Shamsi, Imran Haider oth Zhang, Guoping oth Enthalten in Environmental toxicology and chemistry Pensacola, Fla. : SETAC Press, 1982 34(2015), 1, Seite 45-52 (DE-627)129130923 (DE-600)46234-2 (DE-576)022516131 0730-7268 nnns volume:34 year:2015 number:1 pages:45-52 http://dx.doi.org/10.1002/etc.2776 Volltext http://onlinelibrary.wiley.com/doi/10.1002/etc.2776/abstract http://www.ncbi.nlm.nih.gov/pubmed/25319205 http://search.proquest.com/docview/1644754660 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_252 AR 34 2015 1 45-52 |
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10.1002/etc.2776 doi PQ20160617 (DE-627)OLC1957017155 (DE-599)GBVOLC1957017155 (PRQ)p2957-ae2dd27bdce8dbde7856b8b88845cbaaffa4023d228259b8949edaae76f7b5633 (KEY)0137282320150000034000100045effectsofphosphateonarsenicuptakeandtoxicityallevi DE-627 ger DE-627 rakwb eng 570 690 DNB Zvobgo, Gerald verfasserin aut The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Phosphate (PO4 (3-) ) has been reported to suppress arsenate (As(v) ) uptake in plants. However, its effects on controlling the availability of As(v) in tobacco genotypes with different arsenic (As) tolerances has not been fully explored. In the present study, the effects of PO4 (3-) on As(v) uptake were investigated in a hydroponic culture using 2 tobacco (Nicotiana tabacum) genotypes (ZY90 and FSMY) that differed in As(v) tolerance. A total of 9 treatment combinations comprising As(v) treatments of 0 µM, 10 µM, and 100 µM and PO4 (3-) treatments of 0 µM, 50 µM, and 500 µM were used. The results showed that ZY90 had greater reductions in leaf photosynthetic parameters, root and shoot dry weight, length, and nutrient content than did FSMY when exposed to As(v) stress. The addition of 500 µM external PO4 (3-) significantly suppressed As(v) (100 µM) uptake in both FSMY and ZY90, with the effect being more pronounced in FSMY. Greater PO4 (3-) uptake in plants significantly reduced the influx of As(v) , causing an increase in photosynthesis and nutrient uptake. Phosphate supply increased superoxide dismutase activity, catalase activity, and malondialdehyde content. The present study showed that PO4 (3-) is an effective competitive inhibitor of As(v) , and it can be effectively used to control As(v) accumulation in tobacco plants. Nutzungsrecht: © 2014 SETAC © 2014 SETAC. Tobacco Genotype Phosphate Accumulation Arsenate Plant Roots - drug effects Plant Roots - genetics Tobacco - genetics Lipid Peroxidation - drug effects Photosynthesis - drug effects Plant Leaves - drug effects Arsenates - toxicity Environmental Pollutants - toxicity Phosphates - pharmacology Plant Leaves - genetics Tobacco - metabolism Tobacco - drug effects Flowers & plants Phosphates Bioaccumulation Photosynthesis Arsenic content Genotype & phenotype Hu, Hongliang oth Shang, Shenghua oth Shamsi, Imran Haider oth Zhang, Guoping oth Enthalten in Environmental toxicology and chemistry Pensacola, Fla. : SETAC Press, 1982 34(2015), 1, Seite 45-52 (DE-627)129130923 (DE-600)46234-2 (DE-576)022516131 0730-7268 nnns volume:34 year:2015 number:1 pages:45-52 http://dx.doi.org/10.1002/etc.2776 Volltext http://onlinelibrary.wiley.com/doi/10.1002/etc.2776/abstract http://www.ncbi.nlm.nih.gov/pubmed/25319205 http://search.proquest.com/docview/1644754660 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_252 AR 34 2015 1 45-52 |
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10.1002/etc.2776 doi PQ20160617 (DE-627)OLC1957017155 (DE-599)GBVOLC1957017155 (PRQ)p2957-ae2dd27bdce8dbde7856b8b88845cbaaffa4023d228259b8949edaae76f7b5633 (KEY)0137282320150000034000100045effectsofphosphateonarsenicuptakeandtoxicityallevi DE-627 ger DE-627 rakwb eng 570 690 DNB Zvobgo, Gerald verfasserin aut The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Phosphate (PO4 (3-) ) has been reported to suppress arsenate (As(v) ) uptake in plants. However, its effects on controlling the availability of As(v) in tobacco genotypes with different arsenic (As) tolerances has not been fully explored. In the present study, the effects of PO4 (3-) on As(v) uptake were investigated in a hydroponic culture using 2 tobacco (Nicotiana tabacum) genotypes (ZY90 and FSMY) that differed in As(v) tolerance. A total of 9 treatment combinations comprising As(v) treatments of 0 µM, 10 µM, and 100 µM and PO4 (3-) treatments of 0 µM, 50 µM, and 500 µM were used. The results showed that ZY90 had greater reductions in leaf photosynthetic parameters, root and shoot dry weight, length, and nutrient content than did FSMY when exposed to As(v) stress. The addition of 500 µM external PO4 (3-) significantly suppressed As(v) (100 µM) uptake in both FSMY and ZY90, with the effect being more pronounced in FSMY. Greater PO4 (3-) uptake in plants significantly reduced the influx of As(v) , causing an increase in photosynthesis and nutrient uptake. Phosphate supply increased superoxide dismutase activity, catalase activity, and malondialdehyde content. The present study showed that PO4 (3-) is an effective competitive inhibitor of As(v) , and it can be effectively used to control As(v) accumulation in tobacco plants. Nutzungsrecht: © 2014 SETAC © 2014 SETAC. Tobacco Genotype Phosphate Accumulation Arsenate Plant Roots - drug effects Plant Roots - genetics Tobacco - genetics Lipid Peroxidation - drug effects Photosynthesis - drug effects Plant Leaves - drug effects Arsenates - toxicity Environmental Pollutants - toxicity Phosphates - pharmacology Plant Leaves - genetics Tobacco - metabolism Tobacco - drug effects Flowers & plants Phosphates Bioaccumulation Photosynthesis Arsenic content Genotype & phenotype Hu, Hongliang oth Shang, Shenghua oth Shamsi, Imran Haider oth Zhang, Guoping oth Enthalten in Environmental toxicology and chemistry Pensacola, Fla. : SETAC Press, 1982 34(2015), 1, Seite 45-52 (DE-627)129130923 (DE-600)46234-2 (DE-576)022516131 0730-7268 nnns volume:34 year:2015 number:1 pages:45-52 http://dx.doi.org/10.1002/etc.2776 Volltext http://onlinelibrary.wiley.com/doi/10.1002/etc.2776/abstract http://www.ncbi.nlm.nih.gov/pubmed/25319205 http://search.proquest.com/docview/1644754660 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_252 AR 34 2015 1 45-52 |
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10.1002/etc.2776 doi PQ20160617 (DE-627)OLC1957017155 (DE-599)GBVOLC1957017155 (PRQ)p2957-ae2dd27bdce8dbde7856b8b88845cbaaffa4023d228259b8949edaae76f7b5633 (KEY)0137282320150000034000100045effectsofphosphateonarsenicuptakeandtoxicityallevi DE-627 ger DE-627 rakwb eng 570 690 DNB Zvobgo, Gerald verfasserin aut The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Phosphate (PO4 (3-) ) has been reported to suppress arsenate (As(v) ) uptake in plants. However, its effects on controlling the availability of As(v) in tobacco genotypes with different arsenic (As) tolerances has not been fully explored. In the present study, the effects of PO4 (3-) on As(v) uptake were investigated in a hydroponic culture using 2 tobacco (Nicotiana tabacum) genotypes (ZY90 and FSMY) that differed in As(v) tolerance. A total of 9 treatment combinations comprising As(v) treatments of 0 µM, 10 µM, and 100 µM and PO4 (3-) treatments of 0 µM, 50 µM, and 500 µM were used. The results showed that ZY90 had greater reductions in leaf photosynthetic parameters, root and shoot dry weight, length, and nutrient content than did FSMY when exposed to As(v) stress. The addition of 500 µM external PO4 (3-) significantly suppressed As(v) (100 µM) uptake in both FSMY and ZY90, with the effect being more pronounced in FSMY. Greater PO4 (3-) uptake in plants significantly reduced the influx of As(v) , causing an increase in photosynthesis and nutrient uptake. Phosphate supply increased superoxide dismutase activity, catalase activity, and malondialdehyde content. The present study showed that PO4 (3-) is an effective competitive inhibitor of As(v) , and it can be effectively used to control As(v) accumulation in tobacco plants. Nutzungsrecht: © 2014 SETAC © 2014 SETAC. Tobacco Genotype Phosphate Accumulation Arsenate Plant Roots - drug effects Plant Roots - genetics Tobacco - genetics Lipid Peroxidation - drug effects Photosynthesis - drug effects Plant Leaves - drug effects Arsenates - toxicity Environmental Pollutants - toxicity Phosphates - pharmacology Plant Leaves - genetics Tobacco - metabolism Tobacco - drug effects Flowers & plants Phosphates Bioaccumulation Photosynthesis Arsenic content Genotype & phenotype Hu, Hongliang oth Shang, Shenghua oth Shamsi, Imran Haider oth Zhang, Guoping oth Enthalten in Environmental toxicology and chemistry Pensacola, Fla. : SETAC Press, 1982 34(2015), 1, Seite 45-52 (DE-627)129130923 (DE-600)46234-2 (DE-576)022516131 0730-7268 nnns volume:34 year:2015 number:1 pages:45-52 http://dx.doi.org/10.1002/etc.2776 Volltext http://onlinelibrary.wiley.com/doi/10.1002/etc.2776/abstract http://www.ncbi.nlm.nih.gov/pubmed/25319205 http://search.proquest.com/docview/1644754660 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_252 AR 34 2015 1 45-52 |
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10.1002/etc.2776 doi PQ20160617 (DE-627)OLC1957017155 (DE-599)GBVOLC1957017155 (PRQ)p2957-ae2dd27bdce8dbde7856b8b88845cbaaffa4023d228259b8949edaae76f7b5633 (KEY)0137282320150000034000100045effectsofphosphateonarsenicuptakeandtoxicityallevi DE-627 ger DE-627 rakwb eng 570 690 DNB Zvobgo, Gerald verfasserin aut The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Phosphate (PO4 (3-) ) has been reported to suppress arsenate (As(v) ) uptake in plants. However, its effects on controlling the availability of As(v) in tobacco genotypes with different arsenic (As) tolerances has not been fully explored. In the present study, the effects of PO4 (3-) on As(v) uptake were investigated in a hydroponic culture using 2 tobacco (Nicotiana tabacum) genotypes (ZY90 and FSMY) that differed in As(v) tolerance. A total of 9 treatment combinations comprising As(v) treatments of 0 µM, 10 µM, and 100 µM and PO4 (3-) treatments of 0 µM, 50 µM, and 500 µM were used. The results showed that ZY90 had greater reductions in leaf photosynthetic parameters, root and shoot dry weight, length, and nutrient content than did FSMY when exposed to As(v) stress. The addition of 500 µM external PO4 (3-) significantly suppressed As(v) (100 µM) uptake in both FSMY and ZY90, with the effect being more pronounced in FSMY. Greater PO4 (3-) uptake in plants significantly reduced the influx of As(v) , causing an increase in photosynthesis and nutrient uptake. Phosphate supply increased superoxide dismutase activity, catalase activity, and malondialdehyde content. The present study showed that PO4 (3-) is an effective competitive inhibitor of As(v) , and it can be effectively used to control As(v) accumulation in tobacco plants. Nutzungsrecht: © 2014 SETAC © 2014 SETAC. Tobacco Genotype Phosphate Accumulation Arsenate Plant Roots - drug effects Plant Roots - genetics Tobacco - genetics Lipid Peroxidation - drug effects Photosynthesis - drug effects Plant Leaves - drug effects Arsenates - toxicity Environmental Pollutants - toxicity Phosphates - pharmacology Plant Leaves - genetics Tobacco - metabolism Tobacco - drug effects Flowers & plants Phosphates Bioaccumulation Photosynthesis Arsenic content Genotype & phenotype Hu, Hongliang oth Shang, Shenghua oth Shamsi, Imran Haider oth Zhang, Guoping oth Enthalten in Environmental toxicology and chemistry Pensacola, Fla. : SETAC Press, 1982 34(2015), 1, Seite 45-52 (DE-627)129130923 (DE-600)46234-2 (DE-576)022516131 0730-7268 nnns volume:34 year:2015 number:1 pages:45-52 http://dx.doi.org/10.1002/etc.2776 Volltext http://onlinelibrary.wiley.com/doi/10.1002/etc.2776/abstract http://www.ncbi.nlm.nih.gov/pubmed/25319205 http://search.proquest.com/docview/1644754660 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_252 AR 34 2015 1 45-52 |
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Zvobgo, Gerald |
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Zvobgo, Gerald ddc 570 misc Tobacco misc Genotype misc Phosphate misc Accumulation misc Arsenate misc Plant Roots - drug effects misc Plant Roots - genetics misc Tobacco - genetics misc Lipid Peroxidation - drug effects misc Photosynthesis - drug effects misc Plant Leaves - drug effects misc Arsenates - toxicity misc Environmental Pollutants - toxicity misc Phosphates - pharmacology misc Plant Leaves - genetics misc Tobacco - metabolism misc Tobacco - drug effects misc Flowers & plants misc Phosphates misc Bioaccumulation misc Photosynthesis misc Arsenic content misc Genotype & phenotype The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances |
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570 690 DNB The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances Tobacco Genotype Phosphate Accumulation Arsenate Plant Roots - drug effects Plant Roots - genetics Tobacco - genetics Lipid Peroxidation - drug effects Photosynthesis - drug effects Plant Leaves - drug effects Arsenates - toxicity Environmental Pollutants - toxicity Phosphates - pharmacology Plant Leaves - genetics Tobacco - metabolism Tobacco - drug effects Flowers & plants Phosphates Bioaccumulation Photosynthesis Arsenic content Genotype & phenotype |
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The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances |
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The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances |
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effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances |
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The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances |
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Phosphate (PO4 (3-) ) has been reported to suppress arsenate (As(v) ) uptake in plants. However, its effects on controlling the availability of As(v) in tobacco genotypes with different arsenic (As) tolerances has not been fully explored. In the present study, the effects of PO4 (3-) on As(v) uptake were investigated in a hydroponic culture using 2 tobacco (Nicotiana tabacum) genotypes (ZY90 and FSMY) that differed in As(v) tolerance. A total of 9 treatment combinations comprising As(v) treatments of 0 µM, 10 µM, and 100 µM and PO4 (3-) treatments of 0 µM, 50 µM, and 500 µM were used. The results showed that ZY90 had greater reductions in leaf photosynthetic parameters, root and shoot dry weight, length, and nutrient content than did FSMY when exposed to As(v) stress. The addition of 500 µM external PO4 (3-) significantly suppressed As(v) (100 µM) uptake in both FSMY and ZY90, with the effect being more pronounced in FSMY. Greater PO4 (3-) uptake in plants significantly reduced the influx of As(v) , causing an increase in photosynthesis and nutrient uptake. Phosphate supply increased superoxide dismutase activity, catalase activity, and malondialdehyde content. The present study showed that PO4 (3-) is an effective competitive inhibitor of As(v) , and it can be effectively used to control As(v) accumulation in tobacco plants. |
| abstractGer |
Phosphate (PO4 (3-) ) has been reported to suppress arsenate (As(v) ) uptake in plants. However, its effects on controlling the availability of As(v) in tobacco genotypes with different arsenic (As) tolerances has not been fully explored. In the present study, the effects of PO4 (3-) on As(v) uptake were investigated in a hydroponic culture using 2 tobacco (Nicotiana tabacum) genotypes (ZY90 and FSMY) that differed in As(v) tolerance. A total of 9 treatment combinations comprising As(v) treatments of 0 µM, 10 µM, and 100 µM and PO4 (3-) treatments of 0 µM, 50 µM, and 500 µM were used. The results showed that ZY90 had greater reductions in leaf photosynthetic parameters, root and shoot dry weight, length, and nutrient content than did FSMY when exposed to As(v) stress. The addition of 500 µM external PO4 (3-) significantly suppressed As(v) (100 µM) uptake in both FSMY and ZY90, with the effect being more pronounced in FSMY. Greater PO4 (3-) uptake in plants significantly reduced the influx of As(v) , causing an increase in photosynthesis and nutrient uptake. Phosphate supply increased superoxide dismutase activity, catalase activity, and malondialdehyde content. The present study showed that PO4 (3-) is an effective competitive inhibitor of As(v) , and it can be effectively used to control As(v) accumulation in tobacco plants. |
| abstract_unstemmed |
Phosphate (PO4 (3-) ) has been reported to suppress arsenate (As(v) ) uptake in plants. However, its effects on controlling the availability of As(v) in tobacco genotypes with different arsenic (As) tolerances has not been fully explored. In the present study, the effects of PO4 (3-) on As(v) uptake were investigated in a hydroponic culture using 2 tobacco (Nicotiana tabacum) genotypes (ZY90 and FSMY) that differed in As(v) tolerance. A total of 9 treatment combinations comprising As(v) treatments of 0 µM, 10 µM, and 100 µM and PO4 (3-) treatments of 0 µM, 50 µM, and 500 µM were used. The results showed that ZY90 had greater reductions in leaf photosynthetic parameters, root and shoot dry weight, length, and nutrient content than did FSMY when exposed to As(v) stress. The addition of 500 µM external PO4 (3-) significantly suppressed As(v) (100 µM) uptake in both FSMY and ZY90, with the effect being more pronounced in FSMY. Greater PO4 (3-) uptake in plants significantly reduced the influx of As(v) , causing an increase in photosynthesis and nutrient uptake. Phosphate supply increased superoxide dismutase activity, catalase activity, and malondialdehyde content. The present study showed that PO4 (3-) is an effective competitive inhibitor of As(v) , and it can be effectively used to control As(v) accumulation in tobacco plants. |
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The effects of phosphate on arsenic uptake and toxicity alleviation in tobacco genotypes with differing arsenic tolerances |
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