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標題: Hydrogen peroxide functions as a stress signal in plants
作者: Hung, S.H.
Yu, C.W.
Lin, C.H.
關鍵字: environmental stresses
hydrogen peroxide (H2O2)
reactive oxygen
species (ROS)
stress signal
cytosolic ascorbate peroxidase
protein phosphatase 2c
disease resistance
induced oxidative stress
programmed cell-death
kinase pathways
dna-binding domain
glutathione accumulation
期刊/報告no:: Botanical Bulletin of Academia Sinica, Volume 46, Issue 1, Page(s) 1-10.
摘要: Plants have evolved complex regulatory mechanisms in adapting to various environmental stresses. One of the consequences of many stresses is an increase in the cellular concentration of reactive oxygen species (ROS), which are subsequently converted to hydrogen peroxide (H2O2). An oxidative burst caused by biotic or abiotic stress leads to a disturbance in the cellular redox balance and is highly toxic to cells. Recently, H2O2, in addition to being a toxicant, has been regarded as a signaling molecule and a regulator of the expression of some genes in cells. These include genes encoding antioxidants, cell rescue/defense proteins, and signaling proteins such as kinase, phosphatase, and transcription factors. Here, we review the function of H2O2 as a signal molecule in the transduction of stress signals to the alteration of expression profiles of target genes, and we summarize the evidence that H2O2 acts as a stress signal in plants.
ISSN: 0006-8063
Appears in Collections:生命科學系所



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