Control of ascorbic acid synthesis and accumulation and glutathione by the incident light red/far red ratio in Phaseolus vulgaris leaves

The effects of red/far red (R/FR) ratios on leaf ascorbate (AA) and glutathione (GSH) accumulation were examined in common bean (Phaseolus vulgaris L.). Growth under low R/FR ratios resulted in a "shade" phenotype and much lower leaf AA and GSH contents than high (R/FR) ratios. Photosynthe...

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Autores principales:	Bartoli, Carlos Guillermo, Tambussi, Eduardo Alberto, Fanello, Diego Darío, Foyer, Christine H.
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2009
Materias:	Ciencias Agrarias Ascorbic acid synthesis Glutathione l-galactone-1,4-lactone dehydrogenase Light acclimation Phytochrome Pyridine nucleotide Respiration
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/82751
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-82751
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Agrarias Ascorbic acid synthesis Glutathione l-galactone-1,4-lactone dehydrogenase Light acclimation Phytochrome Pyridine nucleotide Respiration
spellingShingle	Ciencias Agrarias Ascorbic acid synthesis Glutathione l-galactone-1,4-lactone dehydrogenase Light acclimation Phytochrome Pyridine nucleotide Respiration Bartoli, Carlos Guillermo Tambussi, Eduardo Alberto Fanello, Diego Darío Foyer, Christine H. Control of ascorbic acid synthesis and accumulation and glutathione by the incident light red/far red ratio in Phaseolus vulgaris leaves
topic_facet	Ciencias Agrarias Ascorbic acid synthesis Glutathione l-galactone-1,4-lactone dehydrogenase Light acclimation Phytochrome Pyridine nucleotide Respiration
description	The effects of red/far red (R/FR) ratios on leaf ascorbate (AA) and glutathione (GSH) accumulation were examined in common bean (Phaseolus vulgaris L.). Growth under low R/FR ratios resulted in a "shade" phenotype and much lower leaf AA and GSH contents than high (R/FR) ratios. Photosynthesis rates were unaffected by changes in the R/FR ratio but leaf respiration rates, pyridine nucleotide pools and antioxidant enzyme activities were decreased under the low R/FR regime. The GSH pool changed slowly in response to altered R/FR ratios but leaf ascorbate acclimated over a single photoperiod. We conclude that light quality signals, particularly R/FR ratios, are important regulators of antioxidant synthesis and accumulation. These acclimatory changes are an early response to changing light environment.
format	Articulo Articulo
author	Bartoli, Carlos Guillermo Tambussi, Eduardo Alberto Fanello, Diego Darío Foyer, Christine H.
author_facet	Bartoli, Carlos Guillermo Tambussi, Eduardo Alberto Fanello, Diego Darío Foyer, Christine H.
author_sort	Bartoli, Carlos Guillermo
title	Control of ascorbic acid synthesis and accumulation and glutathione by the incident light red/far red ratio in Phaseolus vulgaris leaves
title_short	Control of ascorbic acid synthesis and accumulation and glutathione by the incident light red/far red ratio in Phaseolus vulgaris leaves
title_full	Control of ascorbic acid synthesis and accumulation and glutathione by the incident light red/far red ratio in Phaseolus vulgaris leaves
title_fullStr	Control of ascorbic acid synthesis and accumulation and glutathione by the incident light red/far red ratio in Phaseolus vulgaris leaves
title_full_unstemmed	Control of ascorbic acid synthesis and accumulation and glutathione by the incident light red/far red ratio in Phaseolus vulgaris leaves
title_sort	control of ascorbic acid synthesis and accumulation and glutathione by the incident light red/far red ratio in phaseolus vulgaris leaves
publishDate	2009
url	http://sedici.unlp.edu.ar/handle/10915/82751
work_keys_str_mv	AT bartolicarlosguillermo controlofascorbicacidsynthesisandaccumulationandglutathionebytheincidentlightredfarredratioinphaseolusvulgarisleaves AT tambussieduardoalberto controlofascorbicacidsynthesisandaccumulationandglutathionebytheincidentlightredfarredratioinphaseolusvulgarisleaves AT fanellodiegodario controlofascorbicacidsynthesisandaccumulationandglutathionebytheincidentlightredfarredratioinphaseolusvulgarisleaves AT foyerchristineh controlofascorbicacidsynthesisandaccumulationandglutathionebytheincidentlightredfarredratioinphaseolusvulgarisleaves
bdutipo_str	Repositorios
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Control of ascorbic acid synthesis and accumulation and glutathione by the incident light red/far red ratio in Phaseolus vulgaris leaves

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