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	Provedor de dados Acta Botanica (1) Scientia Agricola (1) Autor Pereira,Eduardo Gusmão (2) Souza,Anna Elisa de (2) Bicalho,Elisa Monteze (1) Oliva,Marco Antonio (1) Pinto,Samuel de Souza (1) Rios,Camilla Oliveira (1) Rosa,Bruno Luan (1) Mais... Palavra-chave Acrocomia aculeata (1) Biometry (1) Burning (1) Climate change (1) Iron toxicity (1) Light energy dissipation (1) Oxidative stress (1) Photosynthesis (1) Seed viability (1) TBARS (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2016 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Do the structures of macaw palm fruit protect seeds in a fire-prone environment? Acta Botanica Bicalho,Elisa Monteze; Rosa,Bruno Luan; Souza,Anna Elisa de; Rios,Camilla Oliveira; Pereira,Eduardo Gusmão. ABSTRACT Fire is an abiotic disturbance that regulates vegetation structure and biodiversity. Some plant species have adapted to fire prone environments by evolving protective structures. Acrocomia aculeata (macaw palm) is widely distributed throughout tropical America, and is found in environments continuously influenced by anthropogenic fire. We aimed to determine whether the fruit characteristics of A. aculeata enable seeds to resist the effects of fire and also the consequent effects of fire on fruit biometric traits and embryo viability. After a fire event in a region of pasture-forest transition, we marked 30 individuals of A. aculeata. The trees were separated by UPGMA analysis into 5 groups according to fire exposure, ranging from trees with no... Tipo: Info:eu-repo/semantics/article Palavras-chave: Acrocomia aculeata; Biometry; Burning; Climate change; Seed viability. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000400540 Oxidative damage and photosynthetic impairment in tropical rice cultivars upon exposure to excess iron Scientia Agricola Pinto,Samuel de Souza; Souza,Anna Elisa de; Oliva,Marco Antonio; Pereira,Eduardo Gusmão. ABSTRACT Iron plays a pivotal role in the redox reactions of photosynthesis and metabolic processes such as chlorophyll synthesis. Iron availability in waterlogged soils can reach toxic levels and promote oxidative stress. Fe toxicity is the most concerning of stresses for rice in many lowland environments around the world and may cause severe impairments in rice photosynthesis. This study aimed to investigate the extension of oxidative stress after excess Fe exposure and its effects on the photosynthesis of rice cultivars with differential sensitivity. Three Brazilian rice cultivars (EPAGRI 107, BRSMG SELETA and BR IRGA 409) were grown in Hoagland nutrient solution (pH 4.0) with two Fe-EDTA doses corresponding to excess Fe (7 mM) and control (0.009 mM)... Tipo: Info:eu-repo/semantics/article Palavras-chave: TBARS; Iron toxicity; Light energy dissipation; Oxidative stress; Photosynthesis. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000300217 Registros recuperados: 2 Primeira ... 1 ... Última

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