期刊
JOURNAL OF EXPERIMENTAL BOTANY
卷 61, 期 15, 页码 4197-4220出版社
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erq282
关键词
Arabidopsis thaliana; glutathione; H2O2; mutants; oxidative stress; pathogens; redox signalling
资金
- Flanders-France [Tournesol T. 2008.21]
- French Agence Nationale de la Recherche
- French Centre National de la Recherche Scientifique
- Tunisian Ministry of Higher Education and Scientific Research, Tunisia
- Universite de Paris sud 11, France
Hydrogen peroxide (H2O2) is an important signal molecule involved in plant development and environmental responses. Changes in H2O2 availability can result from increased production or decreased metabolism. While plants contain several types of H2O2-metabolizing proteins, catalases are highly active enzymes that do not require cellular reductants as they primarily catalyse a dismutase reaction. This review provides an update on plant catalase genes, function, and subcellular localization, with a focus on recent information generated from studies on Arabidopsis. Original data are presented on Arabidopsis catalase single and double mutants, and the use of some of these lines as model systems to investigate the outcome of increases in intracellular H2O2 are discussed. Particular attention is paid to interactions with cell thiol-disulphide status; the use of catalase-deficient plants to probe the apparent redundancy of reductive H2O2-metabolizing pathways; the importance of irradiance and growth daylength in determining the outcomes of catalase deficiency; and the induction of pathogenesis-related responses in catalase-deficient lines. Within the context of strategies aimed at understanding and engineering plant stress responses, the review also considers whether changes in catalase activities in wild-type plants are likely to be a significant part of plant responses to changes in environmental conditions or biotic challenge.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据