Regulation of photosynthesis and antioxidant metabolism in maize leaves at optimal and chilling temperatures: review

Foyer, Christine H.; Vanacker, Hélène; Gomez, Leonardo D.; Harbinson, Jeremy

doi:10.1016/s0981-9428(02)01425-0

Cited by 173 publications

(106 citation statements)

References 45 publications

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“…A lower Fv/Fm value in bleached leaves indicates a stress situation as well as declined photosynthesis. The lowering of photosynthetic parameters was previously reported in leaves of maize, ginkgo and birch that also contained higher level of H 2 O 2 (FOYER et al 2002, KUKAVICA and VELJOVIC-JOVANOVIC 2004, OUGHAM et al 2008). …”

Section: Discussionsupporting

confidence: 67%

Physiology and biochemistry of leaf bleaching in prematurely aging maple (Acer saccharinum L.) trees: I. Hydrogen peroxide level, antioxidative responses and photosynthetic pigments

Užarević¹,

Štolfa²,

Parađiković³

et al. 2011

Acta Botanica Croatica

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-Essential signaling processes such as changes in calcium mobilization, protein phosphorylation and gene expression are known to be modulated by hydrogen peroxide (H 2 O 2 ). A lot of silver maple trees in the city of Osijek (Croatia) were noticed to have bleached leaves by early summer as well as during the whole vegetation season. In this study we aimed to investigate the processes that regulate H 2 O 2 levels in healthy (green) and prematurely aged (bleached) leaves. For that purpose, photosynthetic performance and antioxidative response of green and bleached silver maple leaves were studied. Bleached leaves had higher hydrogen peroxide level, a three-fold level of total soluble proteins as well as a lower level of ascorbic acid. Concentrations of chlorophyll a, chlorophyll b, total chlorophylls and total carotenoids as well as maximum quantum yield of photosystem II were lower in bleached leaves. This indicated their impaired photosynthetic performance. Further more, bleached leaves were characterized by lower specific activities of the main antioxidative enzymes, which influenced their reactive oxygen species scavenging capability. The higher level of H 2 O 2 content in bleached leaves as the consequence of reduced antioxidative enzyme specific activities as well as ascorbic acid level could be the reason for the down-regulation of photosynthetic performance and premature aging of those leaves.

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Section: Discussionsupporting

confidence: 67%

Physiology and biochemistry of leaf bleaching in prematurely aging maple (Acer saccharinum L.) trees: I. Hydrogen peroxide level, antioxidative responses and photosynthetic pigments

Užarević¹,

Štolfa²,

Parađiković³

et al. 2011

Acta Botanica Croatica

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“…Em condições menos favoráveis de suprimento de água ou radiação, a tendência é que os estômatos sejam fechados, o que aumenta a temperatura no interior da folha. Temperaturas do ar abaixo de 15°C (Foyer et al, 2002) ou acima de 38°C podem diminuir a biomassa das plantas de milho, que têm seu melhor desenvolvimento fotossintético entre 32 e 34°C (Kim et al, 2007). Essa faixa está próxima da registrada em ambos os sistemas de cultivo, neste trabalho, o que indica que a temperatura do ar esteve diretamente relacionada às diferenças no desenvolvimento do milho, nesses sistemas.…”

Section: Resultsunclassified

Desenvolvimento do milho sob influência de árvores de pau-branco em sistema agrossilvipastoril

Mendes

Lacerda

Cavalcante

et al. 2013

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito das árvores de pau-branco (Cordia oncocalyx) sobre parâmetros fisiológicos, altura e biomassa do milho, em diferentes distâncias das árvores, em sistema agrossilvipastoril. Utilizou-se o delineamento experimental de blocos ao acaso, com quatro tratamentos (distâncias do caule das árvores de 1, 2, 3 e 4 m), além do controle (plantas do cultivo tradicional), e cinco repetições. Cada parcela consistiu de uma árvore de pau-branco, ao centro, e linhas de milho plantadas nas quatro distâncias avaliadas do caule. As medidas fisiológicas e a produção de matéria seca foram registradas aos 30, 60 e 90 dias após o semeio do milho. As plantas sob a copa do pau-branco, a 1 e 2 m do caule, tiveram suas trocas gasosas, altura e produção de matéria seca afetadas pelas árvores. As plantas cultivadas a 3 m do caule tiveram desempenho semelhante ao observado no cultivo tradicional, e as cultivadas a 4 m apresentaram maior fotossíntese, condutância estomática, transpiração, altura e produção de matéria seca. As plantas de milho sob a copa são afetadas negativamente pelo sombreamento das árvores, enquanto as plantas fora da copa podem se beneficiar da presença das árvores no sistema.Termos para indexação: Cordia oncocalyx, Zea mays, agrossilvicultura, cultivo consorciado, integração lavoura-pecuária-floresta, sistemas agroflorestais. Development of maize under influence of "pau-branco" trees in an agrosilvopastoral systemAbstract -The objective of this work was to evaluate the effect of "pau-branco" (Cordia oncocalyx) trees on physiological parameters, height, and biomass of maize at different distances from the trees in an agrosilvipastoral system. The experimental design was a randomized complete block with four treatments (distances from trees of 1, 2, 3, and 4 m), besides a control (plants cultivated in the traditional system), and five replicates. The plots consisted of one "pau-branco" tree at the center, and maize rows planted at the four evaluated distances from the tree stem. Physiological measurements and dry matter production were recorded at 30, 60, and 90 days after the sowing of maize. The plants under the canopy of "pau-branco" -at 1 and 2 m from the stem -had their gas exchange, height, and dry matter production affected by the trees. The plants 3 m away from the stem had similar performance to those in the traditional system, and the plants at 4 m of distance had higher photosynthesis, stomatal conductance, transpiration, height, and dry mass production. Maize plants under the canopy are negatively affected by tree shading, whereas plants outside the canopy can be favored by the presence of trees in the system.

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“…Photosynthetic capacity has great influences on AOS and the scavenging system (Foyer et al 2002). Nitrogen nutrition can improve light reaction and dark reaction of photosynthetic organization, and reduce deoxidization capacity (Xiao et al 1998).…”

Section: Discussionmentioning

confidence: 99%

“…Leaf photosynthesis is closely related to leaf N content, and high leaf N content always improves plant photosynthesis (Brown et al 1996). On the other hand, active oxygen species (AOS) metabolism was also closely related to photosynthesis (Foyer et al 2002). When absorbed light energy could not be exploited by photosynthetic machinery, AOS were always synthesized and accumulated by plant.…”

Section: Introductionmentioning

confidence: 99%

Effects of soil warming and nitrogen fertilization on leaf physiology of Pinus tabulaeformis seedlings

Zhao

Liu

2012

Acta Physiol Plant

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Regulation of photosynthesis and antioxidant metabolism in maize leaves at optimal and chilling temperatures: review

Cited by 173 publications

References 45 publications

Physiology and biochemistry of leaf bleaching in prematurely aging maple (Acer saccharinum L.) trees: I. Hydrogen peroxide level, antioxidative responses and photosynthetic pigments

Physiology and biochemistry of leaf bleaching in prematurely aging maple (Acer saccharinum L.) trees: I. Hydrogen peroxide level, antioxidative responses and photosynthetic pigments

Desenvolvimento do milho sob influência de árvores de pau-branco em sistema agrossilvipastoril

Effects of soil warming and nitrogen fertilization on leaf physiology of Pinus tabulaeformis seedlings

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