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	Provedor de dados Acta Botanica (3) Scientia Agricola (1) Autor Pereira,Eduardo Gusmão (4) Rosa,Bruno Luan (2) Souza,Anna Elisa de (2) Souza,João Paulo (2) Bicalho,Elisa Monteze (1) Carneiro,Isabella Christina Silveira (1) Oliva,Marco Antonio (1) Pinto,Samuel de Souza (1) Rios,Camilla Oliveira (1) Mais... Palavra-chave Climate change (2) Photosynthesis (2) Acrocomia aculeata (1) Biometry (1) Burning (1) Growth (1) Iron toxicity (1) Jatropha curcas (1) Leaf area (1) Light energy dissipation (1) Light stress (1) Oxidative stress (1) Palm (1) Seed viability (1) TBARS (1) Water deficit (1) Water stress (1) Water use efficiency (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2019 (1) 2016 (2) 2015 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 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 Combined effects of low light and water stress on Jatropha curcas L. promotes shoot growth and morphological adjustment Acta Botanica Carneiro,Isabella Christina Silveira; Pereira,Eduardo Gusmão; Souza,João Paulo. Jatropha curcas (physic nut) is a plant with economic and pharmaceutical uses. Basic studies on the influence of environmental factors on the early development of J. curcas are important for improving farming techniques and increasing productivity. This study investigated the adjustments of J. curcas to the environmental factors of drought and light stress in order to determine which factors most strongly affect the allocation of biomass during early growth. Leaves, stems, and roots of young plants were sampled and leaf area was measured during January and June in 2011. Plants of J. curcas that were grown in shade and subjected to water stress showed higher biomass allocation to aerial parts (mainly stems), which can be explained as a strategy for... Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth; Jatropha curcas; Leaf area; Light stress; Water deficit. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400467 Increased atmospheric CO2 changes the photosynthetic responses of Acrocomia aculeata (Arecaceae) to drought Acta Botanica Rosa,Bruno Luan; Souza,João Paulo; Pereira,Eduardo Gusmão. ABSTRACT Water availability is the main factor that explains current patterns of palm abundance. However, the interaction between water stress and increasing atmospheric CO2 concentrations caused by climatic change and its effects on palm physiology remain poorly known. Macauba palm is a widespread Neotropical species commonly found in ecosystems subjected to seasonal drought and has potential use in oil production. The present work investigated the influence of increased CO2 concentrations on photosynthetic responses to drought in macauba palm plants. Exposure to increased CO2 concentrations led to up-regulation of photosynthesis through higher stomatal conductance and improved light and water use efficiency. Macauba palm plants under water stress,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Climate change; Photosynthesis; Palm; Water stress; Water use efficiency. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300486 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: 4 Primeira ... 1 ... Última

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