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| Chilian,Javier; Verdugo,Isabel; Poblete,Fernando; Ruiz-Lara,Simón; Casaretto,José A; González,Enrique. |
| 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... |
| Tipo: Journal article |
Palavras-chave: Lipid-peroxidation; Photoinhibition; Photochemical quenching; Zeaxanthin. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400002 |
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| Falqueto,Antelmo Ralph; Cassol,Daniela; Magalhães Júnior,Ariano Martins de; Oliveira,Antônio Costa de; Bacarin,Marcos Antonio. |
| The objective of this work was to evaluate the physiological changes that occur in different leaves during the early and late grain-filling stages of two rice genotypes (Oryza sativa subsp. indica , BRS Pelota cultivar, and O. sativa subsp. japonica , BRS Firmeza cultivar), which present differences in grain yield potential. The plants were cultivated in greenhouse. Pigment content, chlorophyll fluorescence, electron transport and oxygen evolution rate were determined in the grain-filling stage, from the first to the forth leaf (top to bottom). Pigment content, photochemical efficiency of photosystem II and electron transport decreased significantly according to the position of leaves in 'BRS Pelota'. The BRS Firmeza cultivar shows higher pigment content... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Oxygen evolution rate; Photochemical quenching; Photosystem II; Photochemicol efficiency; Stay green. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000700007 |
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