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首页> 外文期刊>Trends in Plant Science >Peroxisomes as a source of reactive oxygen species and nitric oxide signalmolecules in plant cells
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Peroxisomes as a source of reactive oxygen species and nitric oxide signalmolecules in plant cells

机译:过氧化物酶体是植物细胞中活性氧和一氧化氮信号分子的来源

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摘要

The important role of plant peroxisomes in a variety of metabolic reactions such as photorespiration, fatty acid beta -oxidation, the glyoxylate cycle and generation-degradation of hydrogen peroxide is well known. In recent years, the presence of a novel group of enzymes, mainly involved in the metabolism of oxygen free-radicals, has been shown in peroxisomes. In addition to hydrogen peroxide, peroxisomes can generate superoxide-radicals and nitric oxide, which are known cellular messengers with a variety of physiological roles in intra- and inter-cellular communication. Nitric oxide and hydrogen peroxide can permeate the peroxisomal membrane and superoxide radicals can be produced on the cytosolic side of the membrane. The signal molecule-generating capacity of peroxisomes can have important implications for cellular metabolism in plants, particularly under biotic and abiotic stress.
机译:植物过氧化物酶体在多种代谢反应中的重要作用,例如光呼吸,脂肪酸β-氧化,乙醛酸循环和过氧化氢的生成-降解是众所周知的。近年来,在过氧化物酶体中已显示出主要涉及氧自由基代谢的新型酶的存在。除过氧化氢外,过氧化物酶体还可以产生超氧自由基和一氧化氮,它们是已知的细胞信使,在细胞内和细胞间的通讯中具有多种生理作用。一氧化氮和过氧化氢会渗透到过氧化物酶体膜上,并且在膜的胞质侧会产生超氧自由基。过氧化物酶体的信号分子产生能力对植物的细胞代谢具有重要意义,特别是在生物和非生物胁迫下。

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