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Photosynthesis, photoinhibition and low temperature acclimation in cold tolerant plants
TLDR
It is concluded that the photosynthetic response to low temperatures and susceptibility to photoinhibition are consequences of the overwintering strategy of the plant species. Expand
Photosynthetic activities of cadmium-treated tomato plants
TLDR
The principal symptom of cadmium action was the occurrence of large plastoglobules and a disorganization of the lamellar structure, mainly grana stacks, which caused grana stacking and restoration of photosystem II activity. Expand
IMMUTANS Does Not Act as a Stress-Induced Safety Valve in the Protection of the Photosynthetic Apparatus of Arabidopsis during Steady-State Photosynthesis1
TLDR
Neither functional analyses of the IM knockout and overexpression lines nor meta-analyses of gene expression support the model that IM acts as a safety valve to regulate the redox state of the PQ pool during stress and acclimation, but IM appears to be strongly regulated by developmental stage of Arabidopsis. Expand
Two different strategies for light utilization in photosynthesis in relation to growth and cold acclimation
TLDR
It appears that without evolving a sustained ability for controlled dissipation of absorbed light as heat throughout the winter, winter green conifers would not have managed to adapt and establish themselves so successfully in the cold climatic zones of the northern hemisphere. Expand
Mechanism of the down regulation of photosynthesis by blue light in the Cyanobacterium synechocystis sp. PCC 6803.
TLDR
The data support a regulatory mechanism involving a protein conformational change and/or change in protein-protein interaction which quenches excitation energy at the core of the phycobilisome. Expand
Excess manganese differentially inhibits photosystem I versus II in Arabidopsis thaliana
TLDR
The results demonstrate for the first time that PSI is the major target of Mn toxicity within the photosynthetic apparatus of Arabidopsis plants. Expand
Betaine Improves Freezing Tolerance in Wheat
TLDR
Betaine treatment resulted in the induction of a subset of low temperature responsive genes, such as the wcor410, and wcor413, that are also induced by salinity or drought stresses and was able to improve the tolerance to photoinhibition of PSII and the steady-state yield of electron transport over PSII in a manner that mimicked cold-acclimated plants. Expand
Photosynthetic Redox Imbalance Governs Leaf Sectoring in the Arabidopsis thaliana Variegation Mutants immutans, spotty, var1, and var2[W]
TLDR
It is concluded that mutations involving components of the photosynthetic electron transport chain, such as those present in immutans, spotty, var1, and var2, predispose Arabidopsis chloroplasts to photooxidation under high excitation pressure, resulting in the variegated phenotype. Expand
The photosynthetic potential of canola embryos
TLDR
The results indicate that the primary role of chloroplasts in embryos is not to photoassimilate C02, but instead, canola embryos are photoheterotrophic and may use the light reactions to generate the ATP and NADPH required to fuel the conversion of maternally supplied sucrose to the fatty acids used in oil synthesis and storage. Expand
Chloroplast redox imbalance governs phenotypic plasticity: the “grand design of photosynthesis” revisited
TLDR
The similarities and differences in the phenotypic responses between cyanobacteria, green algae, crop plants, and variegation mutants of Arabidopsis thaliana as a function of cold acclimation and photoacclimation are reconciled in terms of differential responses to excitation pressure and the predisposition of photoautotrophs to maintain photostasis. Expand
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