Photosynthetic Acclimation
Mostrando 1-12 de 89 artigos, teses e dissertações.
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1. Jatropha curcasand Ricinus communisdisplay contrasting photosynthetic mechanisms in response to environmental conditions
Higher plants display different adaptive strategies in photosynthesis to cope with abiotic stress. In this study, photosynthetic mechanisms and water relationships displayed byJatropha curcasL. (physic nuts) andRicinus communisL. (castor bean), in response to variations in environmental conditions, were assessed.R. communis showed higher CO2 assimilation, st
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-06
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2. Rootstocks induce contrasting photosynthetic responses of orange plants to low night temperature without affecting the antioxidant metabolism
Low temperatures negatively impact the metabolism of orange trees, and the extent of damage can be influenced by the rootstock. We evaluated the effects of low nocturnal temperatures on Valencia orange scions grafted on Rangpur lime or Swingle citrumelo rootstocks. We exposed six-month-old plants to night temperatures of 20ºC and 8ºC under controlled condi
Theor. Exp. Plant Physiol.. Publicado em: 2013
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3. Moderate warm temperature improves shoot growth, affects carbohydrate status and stimulates photosynthesis of sweet orange plants
Citrus plants were grown under two thermal conditions for evaluating carbon metabolism acclimation to moderate warm temperature (30/20ºC, day/night), and its likely impact on plant growth. As reference, plants were grown at 25/20ºC, in which they were subjected to optimum temperature for photosynthesis during the diurnal period (25ºC). Higher photosynthet
Braz. J. Plant Physiol.. Publicado em: 2012
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4. Limitações e potencialidades da fotossíntese no cafeeiro em função da irradiância / Photosynthetic potentialities and limitations in coffee as affectecd by irradiance
O presente estudo foi conduzido procurando-se analisar as contribuições das limitações hidráulicas, difusivas (estomática e mesofílica) e bioquímicas à fotossíntese do cafeeiro, a partição do nitrogênio dentro da maquinaria fotossintética e a ativação desta maquinaria em resposta à irradiância. Para tal, plantas de café arábica (Coffea ar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2011
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5. Growth and accumulation of carotenoids and nitrogen compounds in Gracilaria domingensis (Kütz.) Sonder ex Dickie (Gracilariales, Rhodophyta) cultured under different irradiance and nutrient levels
Effects of the interaction of irradiance and nutrient levels on growth and contents of photosynthetic pigments, carotenoids and proteins in Gracilaria domingensis (Kütz.) Sonder ex Dickie (Gracilariales, Rhodophyta) were investigated experimentally. Nutrient availability provided by dilutions of the nutrient solution of von Stosch (25 and 50%, which corresp
Revista Brasileira de Farmacognosia. Publicado em: 13/05/2011
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6. Plasticidade e aclimatação foliar à irradiância em espécies da Floresta Atlântica / Plasticity and leaf acclimation to light irradiance in Atlantic Forest species
A Floresta Atlântica está entre os cinco ecossistemas terrestres mais ameaçados do mundo e que apresentam maior porcentagem de diversidade e endemismo. Portanto, existe uma prioridade para a conservação e o desenvolvimento de metodologias de recuperação das regiões degradadas deste ecossistema. No entanto, o sucesso de muitos programas de recuperaç�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/10/2010
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7. Modulação da rede de trocas gasosas em um cultivar de cana-de-açúcar tolerante a seca: o papel do fósforo / Network modulation of leaf gas exchange in a drought tolerant sugarcane cultivar under water deficit: a role of Phosphorus
Drought is one of the main abiotic stresses causing significant reduction of crop yield in most of agricultural areas in tropical and subtropical regions. Particularly, water deficit is the major environmental factor limiting sugarcane yield. The objective of this study was to identify what kind of changes in the photosynthetic network would be linked to the
Publicado em: 2009
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8. Aclimatação da maquinaria fotossintética do cafeeiro cultivado em diferentes níveis de luz e de disponibilidade hídrica / Acclimation of the photosynthetic apparatus of the coffee grown in different levels of light and water availabilities
O cafeeiro é originário das florestas tropicais da África, onde é encontrado como vegetação de sub-bosque, desenvolvendo-se sob sombra. No Brasil, no entanto, os cafezais vêm sendo conduzidos quase exclusivamente a pleno sol. Cafezais a pleno sol produzem, na maioria dos casos, mais que os plantios à sombra, o que deve envolver altos investimentos em
Publicado em: 2009
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9. Photosynthetic plasticity and acclimation in tropical tree species / Plasticidade e aclimatação fotossintética de espécies arbóreas tropicais
Com objetivo de estudar a correlação entre o grau de plasticidade/aclimatação fotossintética e o estádio sucessional de espécies arbóreas tropicais, avaliaram-se (i) as alterações fisiológicas e anatômicas em plantas jovens de oito espécies arbóreas cultivadas sob condições naturais de sub-bosque e de clareira e (ii) os efeitos do incremento
Publicado em: 2006
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10. Fotossintese e acumulo de biomassa em plantas jovens de duas especies arboreas de diferentes grupos ecologicos (pioneira x climacica) de uma floresta estacional semidecidual
Tropical tree species present different adaptative strategies according to the micro habitat where they live or according to their ecological group. The objective of this research was to evaluate the photosynthetic responses and accumulation and allocation of biomass of seedlings of Trema micrantha (L.) Blum. (pioneer) and Hymenaea courbaril (L.) varo stilbo
Publicado em: 2000
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11. Carbon Status Constrains Light Acclimation in the Cyanobacterium Synechococcus elongatus1
Acclimation to one environmental factor may constrain acclimation to another. Synechococcus elongatus (sp. PCC7942), growing under continuous light in high inorganic carbon (Ci; approximately 4 mm) and low-Ci (approximately 0.02 mm) media, achieve similar photosynthetic and growth rates under continuous low or high light. During acclimation from low to high
American Society of Plant Biologists.
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12. Identification of Mutants of Arabidopsis Defective in Acclimation of Photosynthesis to the Light Environment1
In common with many other higher plant species, Arabidopsis undergoes photosynthetic acclimation, altering the composition of the photosynthetic apparatus in response to fluctuations in its growth environment. The changes in photosynthetic function that result from acclimation can be detected in a noninvasive manner by monitoring chlorophyll (Chl) fluorescen
American Society of Plant Biologists.