Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants

Abstract Maltose is the predominant form of carbon exported from the chloroplast at night. Plants that lack either the chloroplast maltose transporter or disproportionating enzyme 2 (DPE2, EC 2.4.1.25) have excess maltose in leaves. We confirmed that DPE2 is not associated with the chloroplast in Ar...
Ausführliche Beschreibung

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Autor*in:	Lu, Yan [verfasserIn] Steichen, Jon M. [verfasserIn] Weise, Sean E. [verfasserIn] Sharkey, Thomas D. [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2006

Schlagwörter:	Transitory starch Maltose metabolism Maltose-excess

Übergeordnetes Werk:	Enthalten in: Planta - Berlin : Springer, 1925, 224(2006), 4 vom: 05. Apr., Seite 935-943
Übergeordnetes Werk:	volume:224 ; year:2006 ; number:4 ; day:05 ; month:04 ; pages:935-943

Links:	Volltext

DOI / URN:	10.1007/s00425-006-0263-7

Katalog-ID:	SPR005650666

Internformat


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100	1		\|a Lu, Yan \|e verfasserin \|4 aut
245	1	0	\|a Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants
264		1	\|c 2006
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520			\|a Abstract Maltose is the predominant form of carbon exported from the chloroplast at night. Plants that lack either the chloroplast maltose transporter or disproportionating enzyme 2 (DPE2, EC 2.4.1.25) have excess maltose in leaves. We confirmed that DPE2 is not associated with the chloroplast in Arabidopsis thaliana. Using non-aqueous fractionation methods, we found that essentially all the maltose in mex1-1 leaves is located inside chloroplasts but only 40% of maltose in dpe2-1 leaves is located inside chloroplasts. We found that maltose exists in a significant amount in the exudates collected from maltose-accumulating dpe2-1 Arabidopsis petioles. However, the amount of maltose in the exudates from mex1-1 petioles was not significantly different from that in wild-type phloem exudates. We found twice as much maltose in the roots of dpe2-1 plants relative to wild type but the maltose level in the roots of mex1-1 plants was not higher than wild type. We conclude that maltose accumulated in the cytosol of leaves can be carried from the shoots to the roots and that maltose accumulated in the chloroplast of mex1-1 leaves is not mobilized. By measuring the transcript levels and enzymatic activities, we show that maltose-metabolizing enzymes are active in wild-type roots. The amount of maltose moved from the shoots to the roots increased in dpe2-1 plants. The roots of dpe2-1 plants must have the capacity to metabolize the excess maltose.
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700	1		\|a Sharkey, Thomas D. \|e verfasserin \|4 aut
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912			\|a GBV_ILN_120
912			\|a GBV_ILN_138
912			\|a GBV_ILN_150
912			\|a GBV_ILN_151
912			\|a GBV_ILN_152
912			\|a GBV_ILN_161
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912			\|a GBV_ILN_187
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912			\|a GBV_ILN_2021
912			\|a GBV_ILN_2025
912			\|a GBV_ILN_2026
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912			\|a GBV_ILN_2049
912			\|a GBV_ILN_2050
912			\|a GBV_ILN_2055
912			\|a GBV_ILN_2057
912			\|a GBV_ILN_2059
912			\|a GBV_ILN_2061
912			\|a GBV_ILN_2064
912			\|a GBV_ILN_2065
912			\|a GBV_ILN_2068
912			\|a GBV_ILN_2070
912			\|a GBV_ILN_2086
912			\|a GBV_ILN_2088
912			\|a GBV_ILN_2093
912			\|a GBV_ILN_2106
912			\|a GBV_ILN_2107
912			\|a GBV_ILN_2108
912			\|a GBV_ILN_2110
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912			\|a GBV_ILN_2949
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952			\|d 224 \|j 2006 \|e 4 \|b 05 \|c 04 \|h 935-943

Indexfelder

author_variant	y l yl j m s jm jms s e w se sew t d s td tds
matchkey_str	article:14322048:2006----::ellrnogneelclztoomloenatsec
hierarchy_sort_str	2006
bklnumber	42.38
publishDate	2006
allfields	10.1007/s00425-006-0263-7 doi (DE-627)SPR005650666 (SPR)s00425-006-0263-7-e DE-627 ger DE-627 rakwb eng 580 ASE 42.38 bkl Lu, Yan verfasserin aut Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Maltose is the predominant form of carbon exported from the chloroplast at night. Plants that lack either the chloroplast maltose transporter or disproportionating enzyme 2 (DPE2, EC 2.4.1.25) have excess maltose in leaves. We confirmed that DPE2 is not associated with the chloroplast in Arabidopsis thaliana. Using non-aqueous fractionation methods, we found that essentially all the maltose in mex1-1 leaves is located inside chloroplasts but only 40% of maltose in dpe2-1 leaves is located inside chloroplasts. We found that maltose exists in a significant amount in the exudates collected from maltose-accumulating dpe2-1 Arabidopsis petioles. However, the amount of maltose in the exudates from mex1-1 petioles was not significantly different from that in wild-type phloem exudates. We found twice as much maltose in the roots of dpe2-1 plants relative to wild type but the maltose level in the roots of mex1-1 plants was not higher than wild type. We conclude that maltose accumulated in the cytosol of leaves can be carried from the shoots to the roots and that maltose accumulated in the chloroplast of mex1-1 leaves is not mobilized. By measuring the transcript levels and enzymatic activities, we show that maltose-metabolizing enzymes are active in wild-type roots. The amount of maltose moved from the shoots to the roots increased in dpe2-1 plants. The roots of dpe2-1 plants must have the capacity to metabolize the excess maltose. Transitory starch (dpeaa)DE-He213 Maltose metabolism (dpeaa)DE-He213 Maltose-excess (dpeaa)DE-He213 Steichen, Jon M. verfasserin aut Weise, Sean E. verfasserin aut Sharkey, Thomas D. verfasserin aut Enthalten in Planta Berlin : Springer, 1925 224(2006), 4 vom: 05. Apr., Seite 935-943 (DE-627)254639100 (DE-600)1463030-8 1432-2048 nnns volume:224 year:2006 number:4 day:05 month:04 pages:935-943 https://dx.doi.org/10.1007/s00425-006-0263-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA 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_65 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_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_636 GBV_ILN_647 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_2018 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_2946 GBV_ILN_2949 GBV_ILN_2951 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_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4346 GBV_ILN_4393 GBV_ILN_4700 42.38 ASE AR 224 2006 4 05 04 935-943
spelling	10.1007/s00425-006-0263-7 doi (DE-627)SPR005650666 (SPR)s00425-006-0263-7-e DE-627 ger DE-627 rakwb eng 580 ASE 42.38 bkl Lu, Yan verfasserin aut Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Maltose is the predominant form of carbon exported from the chloroplast at night. Plants that lack either the chloroplast maltose transporter or disproportionating enzyme 2 (DPE2, EC 2.4.1.25) have excess maltose in leaves. We confirmed that DPE2 is not associated with the chloroplast in Arabidopsis thaliana. Using non-aqueous fractionation methods, we found that essentially all the maltose in mex1-1 leaves is located inside chloroplasts but only 40% of maltose in dpe2-1 leaves is located inside chloroplasts. We found that maltose exists in a significant amount in the exudates collected from maltose-accumulating dpe2-1 Arabidopsis petioles. However, the amount of maltose in the exudates from mex1-1 petioles was not significantly different from that in wild-type phloem exudates. We found twice as much maltose in the roots of dpe2-1 plants relative to wild type but the maltose level in the roots of mex1-1 plants was not higher than wild type. We conclude that maltose accumulated in the cytosol of leaves can be carried from the shoots to the roots and that maltose accumulated in the chloroplast of mex1-1 leaves is not mobilized. By measuring the transcript levels and enzymatic activities, we show that maltose-metabolizing enzymes are active in wild-type roots. The amount of maltose moved from the shoots to the roots increased in dpe2-1 plants. The roots of dpe2-1 plants must have the capacity to metabolize the excess maltose. Transitory starch (dpeaa)DE-He213 Maltose metabolism (dpeaa)DE-He213 Maltose-excess (dpeaa)DE-He213 Steichen, Jon M. verfasserin aut Weise, Sean E. verfasserin aut Sharkey, Thomas D. verfasserin aut Enthalten in Planta Berlin : Springer, 1925 224(2006), 4 vom: 05. Apr., Seite 935-943 (DE-627)254639100 (DE-600)1463030-8 1432-2048 nnns volume:224 year:2006 number:4 day:05 month:04 pages:935-943 https://dx.doi.org/10.1007/s00425-006-0263-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA 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_65 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_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_636 GBV_ILN_647 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_2018 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_2946 GBV_ILN_2949 GBV_ILN_2951 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_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4346 GBV_ILN_4393 GBV_ILN_4700 42.38 ASE AR 224 2006 4 05 04 935-943
allfields_unstemmed	10.1007/s00425-006-0263-7 doi (DE-627)SPR005650666 (SPR)s00425-006-0263-7-e DE-627 ger DE-627 rakwb eng 580 ASE 42.38 bkl Lu, Yan verfasserin aut Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Maltose is the predominant form of carbon exported from the chloroplast at night. Plants that lack either the chloroplast maltose transporter or disproportionating enzyme 2 (DPE2, EC 2.4.1.25) have excess maltose in leaves. We confirmed that DPE2 is not associated with the chloroplast in Arabidopsis thaliana. Using non-aqueous fractionation methods, we found that essentially all the maltose in mex1-1 leaves is located inside chloroplasts but only 40% of maltose in dpe2-1 leaves is located inside chloroplasts. We found that maltose exists in a significant amount in the exudates collected from maltose-accumulating dpe2-1 Arabidopsis petioles. However, the amount of maltose in the exudates from mex1-1 petioles was not significantly different from that in wild-type phloem exudates. We found twice as much maltose in the roots of dpe2-1 plants relative to wild type but the maltose level in the roots of mex1-1 plants was not higher than wild type. We conclude that maltose accumulated in the cytosol of leaves can be carried from the shoots to the roots and that maltose accumulated in the chloroplast of mex1-1 leaves is not mobilized. By measuring the transcript levels and enzymatic activities, we show that maltose-metabolizing enzymes are active in wild-type roots. The amount of maltose moved from the shoots to the roots increased in dpe2-1 plants. The roots of dpe2-1 plants must have the capacity to metabolize the excess maltose. Transitory starch (dpeaa)DE-He213 Maltose metabolism (dpeaa)DE-He213 Maltose-excess (dpeaa)DE-He213 Steichen, Jon M. verfasserin aut Weise, Sean E. verfasserin aut Sharkey, Thomas D. verfasserin aut Enthalten in Planta Berlin : Springer, 1925 224(2006), 4 vom: 05. Apr., Seite 935-943 (DE-627)254639100 (DE-600)1463030-8 1432-2048 nnns volume:224 year:2006 number:4 day:05 month:04 pages:935-943 https://dx.doi.org/10.1007/s00425-006-0263-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA 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_65 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_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_636 GBV_ILN_647 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_2018 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_2946 GBV_ILN_2949 GBV_ILN_2951 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_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4346 GBV_ILN_4393 GBV_ILN_4700 42.38 ASE AR 224 2006 4 05 04 935-943
allfieldsGer	10.1007/s00425-006-0263-7 doi (DE-627)SPR005650666 (SPR)s00425-006-0263-7-e DE-627 ger DE-627 rakwb eng 580 ASE 42.38 bkl Lu, Yan verfasserin aut Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Maltose is the predominant form of carbon exported from the chloroplast at night. Plants that lack either the chloroplast maltose transporter or disproportionating enzyme 2 (DPE2, EC 2.4.1.25) have excess maltose in leaves. We confirmed that DPE2 is not associated with the chloroplast in Arabidopsis thaliana. Using non-aqueous fractionation methods, we found that essentially all the maltose in mex1-1 leaves is located inside chloroplasts but only 40% of maltose in dpe2-1 leaves is located inside chloroplasts. We found that maltose exists in a significant amount in the exudates collected from maltose-accumulating dpe2-1 Arabidopsis petioles. However, the amount of maltose in the exudates from mex1-1 petioles was not significantly different from that in wild-type phloem exudates. We found twice as much maltose in the roots of dpe2-1 plants relative to wild type but the maltose level in the roots of mex1-1 plants was not higher than wild type. We conclude that maltose accumulated in the cytosol of leaves can be carried from the shoots to the roots and that maltose accumulated in the chloroplast of mex1-1 leaves is not mobilized. By measuring the transcript levels and enzymatic activities, we show that maltose-metabolizing enzymes are active in wild-type roots. The amount of maltose moved from the shoots to the roots increased in dpe2-1 plants. The roots of dpe2-1 plants must have the capacity to metabolize the excess maltose. Transitory starch (dpeaa)DE-He213 Maltose metabolism (dpeaa)DE-He213 Maltose-excess (dpeaa)DE-He213 Steichen, Jon M. verfasserin aut Weise, Sean E. verfasserin aut Sharkey, Thomas D. verfasserin aut Enthalten in Planta Berlin : Springer, 1925 224(2006), 4 vom: 05. Apr., Seite 935-943 (DE-627)254639100 (DE-600)1463030-8 1432-2048 nnns volume:224 year:2006 number:4 day:05 month:04 pages:935-943 https://dx.doi.org/10.1007/s00425-006-0263-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA 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_65 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_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_636 GBV_ILN_647 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_2018 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_2946 GBV_ILN_2949 GBV_ILN_2951 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_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4346 GBV_ILN_4393 GBV_ILN_4700 42.38 ASE AR 224 2006 4 05 04 935-943
allfieldsSound	10.1007/s00425-006-0263-7 doi (DE-627)SPR005650666 (SPR)s00425-006-0263-7-e DE-627 ger DE-627 rakwb eng 580 ASE 42.38 bkl Lu, Yan verfasserin aut Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Maltose is the predominant form of carbon exported from the chloroplast at night. Plants that lack either the chloroplast maltose transporter or disproportionating enzyme 2 (DPE2, EC 2.4.1.25) have excess maltose in leaves. We confirmed that DPE2 is not associated with the chloroplast in Arabidopsis thaliana. Using non-aqueous fractionation methods, we found that essentially all the maltose in mex1-1 leaves is located inside chloroplasts but only 40% of maltose in dpe2-1 leaves is located inside chloroplasts. We found that maltose exists in a significant amount in the exudates collected from maltose-accumulating dpe2-1 Arabidopsis petioles. However, the amount of maltose in the exudates from mex1-1 petioles was not significantly different from that in wild-type phloem exudates. We found twice as much maltose in the roots of dpe2-1 plants relative to wild type but the maltose level in the roots of mex1-1 plants was not higher than wild type. We conclude that maltose accumulated in the cytosol of leaves can be carried from the shoots to the roots and that maltose accumulated in the chloroplast of mex1-1 leaves is not mobilized. By measuring the transcript levels and enzymatic activities, we show that maltose-metabolizing enzymes are active in wild-type roots. The amount of maltose moved from the shoots to the roots increased in dpe2-1 plants. The roots of dpe2-1 plants must have the capacity to metabolize the excess maltose. Transitory starch (dpeaa)DE-He213 Maltose metabolism (dpeaa)DE-He213 Maltose-excess (dpeaa)DE-He213 Steichen, Jon M. verfasserin aut Weise, Sean E. verfasserin aut Sharkey, Thomas D. verfasserin aut Enthalten in Planta Berlin : Springer, 1925 224(2006), 4 vom: 05. Apr., Seite 935-943 (DE-627)254639100 (DE-600)1463030-8 1432-2048 nnns volume:224 year:2006 number:4 day:05 month:04 pages:935-943 https://dx.doi.org/10.1007/s00425-006-0263-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA 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_65 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_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_636 GBV_ILN_647 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_2018 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_2946 GBV_ILN_2949 GBV_ILN_2951 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_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4346 GBV_ILN_4393 GBV_ILN_4700 42.38 ASE AR 224 2006 4 05 04 935-943
language	English
source	Enthalten in Planta 224(2006), 4 vom: 05. Apr., Seite 935-943 volume:224 year:2006 number:4 day:05 month:04 pages:935-943
sourceStr	Enthalten in Planta 224(2006), 4 vom: 05. Apr., Seite 935-943 volume:224 year:2006 number:4 day:05 month:04 pages:935-943
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Transitory starch Maltose metabolism Maltose-excess
dewey-raw	580
isfreeaccess_bool	false
container_title	Planta
authorswithroles_txt_mv	Lu, Yan @@aut@@ Steichen, Jon M. @@aut@@ Weise, Sean E. @@aut@@ Sharkey, Thomas D. @@aut@@
publishDateDaySort_date	2006-04-05T00:00:00Z
hierarchy_top_id	254639100
dewey-sort	3580
id	SPR005650666
language_de	englisch
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author	Lu, Yan
spellingShingle	Lu, Yan ddc 580 bkl 42.38 misc Transitory starch misc Maltose metabolism misc Maltose-excess Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants
authorStr	Lu, Yan
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topic_title	580 ASE 42.38 bkl Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants Transitory starch (dpeaa)DE-He213 Maltose metabolism (dpeaa)DE-He213 Maltose-excess (dpeaa)DE-He213
topic	ddc 580 bkl 42.38 misc Transitory starch misc Maltose metabolism misc Maltose-excess
topic_unstemmed	ddc 580 bkl 42.38 misc Transitory starch misc Maltose metabolism misc Maltose-excess
topic_browse	ddc 580 bkl 42.38 misc Transitory starch misc Maltose metabolism misc Maltose-excess
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title	Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants
ctrlnum	(DE-627)SPR005650666 (SPR)s00425-006-0263-7-e
title_full	Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants
author_sort	Lu, Yan
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author_browse	Lu, Yan Steichen, Jon M. Weise, Sean E. Sharkey, Thomas D.
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class	580 ASE 42.38 bkl
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title_sort	cellular and organ level localization of maltose in maltose-excess arabidopsis mutants
title_auth	Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants
abstract	Abstract Maltose is the predominant form of carbon exported from the chloroplast at night. Plants that lack either the chloroplast maltose transporter or disproportionating enzyme 2 (DPE2, EC 2.4.1.25) have excess maltose in leaves. We confirmed that DPE2 is not associated with the chloroplast in Arabidopsis thaliana. Using non-aqueous fractionation methods, we found that essentially all the maltose in mex1-1 leaves is located inside chloroplasts but only 40% of maltose in dpe2-1 leaves is located inside chloroplasts. We found that maltose exists in a significant amount in the exudates collected from maltose-accumulating dpe2-1 Arabidopsis petioles. However, the amount of maltose in the exudates from mex1-1 petioles was not significantly different from that in wild-type phloem exudates. We found twice as much maltose in the roots of dpe2-1 plants relative to wild type but the maltose level in the roots of mex1-1 plants was not higher than wild type. We conclude that maltose accumulated in the cytosol of leaves can be carried from the shoots to the roots and that maltose accumulated in the chloroplast of mex1-1 leaves is not mobilized. By measuring the transcript levels and enzymatic activities, we show that maltose-metabolizing enzymes are active in wild-type roots. The amount of maltose moved from the shoots to the roots increased in dpe2-1 plants. The roots of dpe2-1 plants must have the capacity to metabolize the excess maltose.
abstractGer	Abstract Maltose is the predominant form of carbon exported from the chloroplast at night. Plants that lack either the chloroplast maltose transporter or disproportionating enzyme 2 (DPE2, EC 2.4.1.25) have excess maltose in leaves. We confirmed that DPE2 is not associated with the chloroplast in Arabidopsis thaliana. Using non-aqueous fractionation methods, we found that essentially all the maltose in mex1-1 leaves is located inside chloroplasts but only 40% of maltose in dpe2-1 leaves is located inside chloroplasts. We found that maltose exists in a significant amount in the exudates collected from maltose-accumulating dpe2-1 Arabidopsis petioles. However, the amount of maltose in the exudates from mex1-1 petioles was not significantly different from that in wild-type phloem exudates. We found twice as much maltose in the roots of dpe2-1 plants relative to wild type but the maltose level in the roots of mex1-1 plants was not higher than wild type. We conclude that maltose accumulated in the cytosol of leaves can be carried from the shoots to the roots and that maltose accumulated in the chloroplast of mex1-1 leaves is not mobilized. By measuring the transcript levels and enzymatic activities, we show that maltose-metabolizing enzymes are active in wild-type roots. The amount of maltose moved from the shoots to the roots increased in dpe2-1 plants. The roots of dpe2-1 plants must have the capacity to metabolize the excess maltose.
abstract_unstemmed	Abstract Maltose is the predominant form of carbon exported from the chloroplast at night. Plants that lack either the chloroplast maltose transporter or disproportionating enzyme 2 (DPE2, EC 2.4.1.25) have excess maltose in leaves. We confirmed that DPE2 is not associated with the chloroplast in Arabidopsis thaliana. Using non-aqueous fractionation methods, we found that essentially all the maltose in mex1-1 leaves is located inside chloroplasts but only 40% of maltose in dpe2-1 leaves is located inside chloroplasts. We found that maltose exists in a significant amount in the exudates collected from maltose-accumulating dpe2-1 Arabidopsis petioles. However, the amount of maltose in the exudates from mex1-1 petioles was not significantly different from that in wild-type phloem exudates. We found twice as much maltose in the roots of dpe2-1 plants relative to wild type but the maltose level in the roots of mex1-1 plants was not higher than wild type. We conclude that maltose accumulated in the cytosol of leaves can be carried from the shoots to the roots and that maltose accumulated in the chloroplast of mex1-1 leaves is not mobilized. By measuring the transcript levels and enzymatic activities, we show that maltose-metabolizing enzymes are active in wild-type roots. The amount of maltose moved from the shoots to the roots increased in dpe2-1 plants. The roots of dpe2-1 plants must have the capacity to metabolize the excess maltose.
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container_issue	4
title_short	Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants
url	https://dx.doi.org/10.1007/s00425-006-0263-7
remote_bool	true
author2	Steichen, Jon M. Weise, Sean E. Sharkey, Thomas D.
author2Str	Steichen, Jon M. Weise, Sean E. Sharkey, Thomas D.
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doi_str	10.1007/s00425-006-0263-7
up_date	2024-07-03T17:46:53.442Z
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Cellular and organ level localization of maltose in maltose-excess Arabidopsis mutants

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