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Photosynthetic induction and activity of enzymes related to carbon metabolism: insights into the varying net photosynthesis rates of coffee sun and shade leaves

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dc.contributor.author Martins, Samuel Cordeiro Vitor
dc.contributor.author Detmann, Kelly Coutinho
dc.contributor.author Reis, Josimar Vieira dos
dc.contributor.author Pereira, Lucas Felisberto
dc.contributor.author Sanglard, Lílian Maria Vincis Pereira
dc.contributor.author Rogalski, Marcelo
dc.contributor.author DaMatta, Fábio Murilo
dc.date.accessioned 2023-05-30T10:29:36Z
dc.date.available 2023-05-30T10:29:36Z
dc.date.issued 2013-05-21
dc.identifier.citation MARTINS, Samuel Cordeiro Vitor; DETMANN, Kelly Coutinho; REIS, Josimar Vieira dos; PEREIRA, Lucas Felisberto; SANGLARD, Lílian Maria Vincis Pereira; ROGALSKI, Marcelo; DaMATTA, Fábio Murilo. Photosynthetic induction and activity of enzymes related to carbon metabolism: insights into the varying net photosynthesis rates of coffee sun and shade leaves. Theoretical and Experimental Plant Physiology, Campo dos Goytacazes, v. 25, n. 1, p. 62-69, 21 may 2013. Disponível em: https://www.scielo.br/j/txpp/a/h645CYgsg59wCXmqjWZGWyN/?lang=en. Acesso em: 26 jan. 2023. pt_BR
dc.identifier.issn 2197-0025
dc.identifier.uri https://www.scielo.br/j/txpp/a/h645CYgsg59wCXmqjWZGWyN/?lang=en pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/13870
dc.description.abstract The shade leaves of coffee (Coffea arabica L.) apparently retain a robust photosynthetic machinery that is comparable to that of sun leaves and can fix CO2 at high rates when subjected to high light intensities. This raises the question of why the coffee plant would construct such a robust photosynthetic machinery despite the low photosynthetic rates achieved by the shade leaves at low light supply. Here, we grew coffee plants at 100% or 10% full sunlight and demonstrated that the shade leaves exhibited faster photosynthetic induction compared with their sun counterparts, in parallel with lower loss of induction states under dim light, and were well protected against short-term sudden increases in light supply (mimicking sunflecks). These findings were linked to similar photosynthetic capacities on a per mass basis (assessed under nonlimiting light), as well as similar extractable activities of some enzymes of the Calvin cycle, including Rubisco, when comparing the shade and sun leaves. On the one hand, these responses might represent an overinvestment of resources given the low photosynthetic rates of the shade leaves when light is limiting; on the other hand, such responses might be associated with a conservative behavior linked to the origin of the species as a shade-dwelling plant, allowing it to maximize the use of the energy from sunflecks and thus ultimately contributing to a positive carbon balance under conditions of intense shading. pt_BR
dc.format pdf pt_BR
dc.language.iso en pt_BR
dc.publisher Sociedade Brasileira de Fisiologia Vegetal pt_BR
dc.relation.ispartofseries Theor. Exp. Plant Physiol.;v. 25, n. 1, p. 62-69, 2013;
dc.rights Open Access pt_BR
dc.subject Coffea pt_BR
dc.subject photosynthesis pt_BR
dc.subject photosynthetic induction kinetics pt_BR
dc.subject sun/shade tolerance pt_BR
dc.subject sunflecks pt_BR
dc.subject.classification Cafeicultura::Agroclimatologia e fisiologia pt_BR
dc.title Photosynthetic induction and activity of enzymes related to carbon metabolism: insights into the varying net photosynthesis rates of coffee sun and shade leaves pt_BR
dc.type Artigo pt_BR

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