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- W2227504685 startingPage "6679" @default.
- W2227504685 abstract "Plants coordinate their responses to various biotic and abiotic stresses in order to optimize their developmental and acclimatory programmes. The ultimate response to an excessive amount of stress is local induction of cell death mechanisms. The death of certain cells can help to maintain tissue homeostasis and enable nutrient remobilization, thus increasing the survival chances of the whole organism in unfavourable environmental conditions. UV radiation is one of the environmental factors that negatively affects the photosynthetic process and triggers cell death. The aim of this work was to evaluate a possible role of the red/far-red light photoreceptors phytochrome A (phyA) and phytochrome B (phyB) and their interrelations during acclimatory responses to UV stress. We showed that UV-C treatment caused a disturbance in photosystem II and a deregulation of photosynthetic pigment content and antioxidant enzymes activities, followed by increased cell mortality rate in phyB and phyAB null mutants. We also propose a regulatory role of phyA and phyB in CO2 assimilation, non-photochemical quenching, reactive oxygen species accumulation and salicylic acid content. Taken together, our results suggest a novel role of phytochromes as putative regulators of cell death and acclimatory responses to UV." @default.
- W2227504685 created "2016-06-24" @default.
- W2227504685 creator A5002295340 @default.
- W2227504685 creator A5013992437 @default.
- W2227504685 creator A5024010998 @default.
- W2227504685 creator A5030710642 @default.
- W2227504685 creator A5038532156 @default.
- W2227504685 creator A5049230128 @default.
- W2227504685 creator A5051977940 @default.
- W2227504685 creator A5063390545 @default.
- W2227504685 date "2015-09-18" @default.
- W2227504685 modified "2023-09-29" @default.
- W2227504685 title "Role of phytochromes A and B in the regulation of cell death and acclimatory responses to UV stress in<i>Arabidopsis thaliana</i>" @default.
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