Expression of LHC Genes and their Relation to Photo-Oxidative Stress Tolerance Tolerance in Solanum lycopersicum L. and Solanum chilense (Dunal) Reiche

Simultaneous exposition to low temperature and high light radiation cause photoinhibition of photosynthetic apparatus, affecting the productivity and geographical distribution of agricultural crops. In several Solanaceous species, tolerance to low temperature stress in combination with high light ha...

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Autores principales:	Chilian,Javier, Verdugo,Isabel, Poblete,Fernando, Ruiz-Lara,Simón, Casaretto,José A, González,Enrique
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2011
Materias:	Lipid-peroxidation photoinhibition photochemical quenching zeaxanthin
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400002
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spelling	oai:scielo:S0718-583920110004000022018-10-01Expression of LHC Genes and their Relation to Photo-Oxidative Stress Tolerance Tolerance in Solanum lycopersicum L. and Solanum chilense (Dunal) ReicheChilian,JavierVerdugo,IsabelPoblete,FernandoRuiz-Lara,SimónCasaretto,José AGonzález,Enrique Lipid-peroxidation photoinhibition photochemical quenching zeaxanthin Simultaneous exposition to low temperature and high light radiation cause photoinhibition of photosynthetic apparatus, affecting the productivity and geographical distribution of agricultural crops. In several Solanaceous species, tolerance to low temperature stress in combination with high light has been associated with some stimulation in non-photochemical quenching (NPQ), which involved reorganization in light-harvesting complex (LHC) proteins. To study photosynthetic performance in Solanum lycopersicum L. and S. chilense (Dunal) Reiche, and to investigate transcriptional regulation of genes encoding LHC proteins and their involvement in the NPQ, plants of both species were exposed to low temperature (4 °C) and high light radiation (1300 /<mol m-2 s-1). Lipid peroxidation, photochemical efficiency, and changes in xanthophyll cycle pigments were measured. The results presented here indicate that S. chilense showed higher tolerance to photoinhibition than S. lycopersicum under low-temperature and high light conditions, increasing light-energy consumption in photochemical processes by increasing photosynthetic capacity as indicated by photochemical quenching (qP) and relative electron transport rate (ETR) parameters. The contribution of light-harvesting chlorophyll a/b binding (LHC) protein was not related to dissipate excess excitation energy as heat (NPQ), but rather with the antioxidant function attributable to zeaxanthin as indicated by the amount of peroxidized lipids in S. chilense. We suggest that the differential expression of Lhcal transcripts, with zeaxanthin binding sites could contribute to the greater tolerance of S. chilense to photoxidative stress.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.71 n.4 20112011-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400002en10.4067/S0718-58392011000400002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Lipid-peroxidation photoinhibition photochemical quenching zeaxanthin
spellingShingle	Lipid-peroxidation photoinhibition photochemical quenching zeaxanthin Chilian,Javier Verdugo,Isabel Poblete,Fernando Ruiz-Lara,Simón Casaretto,José A González,Enrique Expression of LHC Genes and their Relation to Photo-Oxidative Stress Tolerance Tolerance in Solanum lycopersicum L. and Solanum chilense (Dunal) Reiche
description	Simultaneous exposition to low temperature and high light radiation cause photoinhibition of photosynthetic apparatus, affecting the productivity and geographical distribution of agricultural crops. In several Solanaceous species, tolerance to low temperature stress in combination with high light has been associated with some stimulation in non-photochemical quenching (NPQ), which involved reorganization in light-harvesting complex (LHC) proteins. To study photosynthetic performance in Solanum lycopersicum L. and S. chilense (Dunal) Reiche, and to investigate transcriptional regulation of genes encoding LHC proteins and their involvement in the NPQ, plants of both species were exposed to low temperature (4 °C) and high light radiation (1300 /<mol m-2 s-1). Lipid peroxidation, photochemical efficiency, and changes in xanthophyll cycle pigments were measured. The results presented here indicate that S. chilense showed higher tolerance to photoinhibition than S. lycopersicum under low-temperature and high light conditions, increasing light-energy consumption in photochemical processes by increasing photosynthetic capacity as indicated by photochemical quenching (qP) and relative electron transport rate (ETR) parameters. The contribution of light-harvesting chlorophyll a/b binding (LHC) protein was not related to dissipate excess excitation energy as heat (NPQ), but rather with the antioxidant function attributable to zeaxanthin as indicated by the amount of peroxidized lipids in S. chilense. We suggest that the differential expression of Lhcal transcripts, with zeaxanthin binding sites could contribute to the greater tolerance of S. chilense to photoxidative stress.
author	Chilian,Javier Verdugo,Isabel Poblete,Fernando Ruiz-Lara,Simón Casaretto,José A González,Enrique
author_facet	Chilian,Javier Verdugo,Isabel Poblete,Fernando Ruiz-Lara,Simón Casaretto,José A González,Enrique
author_sort	Chilian,Javier
title	Expression of LHC Genes and their Relation to Photo-Oxidative Stress Tolerance Tolerance in Solanum lycopersicum L. and Solanum chilense (Dunal) Reiche
title_short	Expression of LHC Genes and their Relation to Photo-Oxidative Stress Tolerance Tolerance in Solanum lycopersicum L. and Solanum chilense (Dunal) Reiche
title_full	Expression of LHC Genes and their Relation to Photo-Oxidative Stress Tolerance Tolerance in Solanum lycopersicum L. and Solanum chilense (Dunal) Reiche
title_fullStr	Expression of LHC Genes and their Relation to Photo-Oxidative Stress Tolerance Tolerance in Solanum lycopersicum L. and Solanum chilense (Dunal) Reiche
title_full_unstemmed	Expression of LHC Genes and their Relation to Photo-Oxidative Stress Tolerance Tolerance in Solanum lycopersicum L. and Solanum chilense (Dunal) Reiche
title_sort	expression of lhc genes and their relation to photo-oxidative stress tolerance tolerance in solanum lycopersicum l. and solanum chilense (dunal) reiche
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400002
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Expression of LHC Genes and their Relation to Photo-Oxidative Stress Tolerance Tolerance in Solanum lycopersicum L. and Solanum chilense (Dunal) Reiche

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