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Change in desiccation tolerance of maize embryos during development and germination at different water potential PEG-6000 in relation to oxidative process

文献类型：期刊论文

作者Huang, Hui1,2,3; Song, Songquan3
刊名PLANT PHYSIOLOGY AND BIOCHEMISTRY
出版日期2013-07-01
卷号68页码:61-70
关键词a Combined Model Antioxidant Enzyme Desiccation Tolerance Hydrogen Peroxide Maize Embryos During Development And Germination Malonyldialdehyde Peg-6000 Treatment
ISSN号0981-9428
通讯作者Song, SQ (reprint author), Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China. ; sqsong@ibcas.ac.cn
文献子类Article
英文摘要Desiccation tolerance is one of the most important traits determining seed survival during storage and under stress conditions. However, the mechanism of seed desiccation tolerance is still unclear in detail. In the present study, we used a combined model system, desiccation-tolerant and -sensitive maize embryos with identical genetic background, to investigate the changes in desiccation tolerance, malonyldialdehyde (MDA) level, hydrogen peroxide (H2O2) content and antioxidant enzyme activity during seed development and germination in 0, -0.6 and -1.2 MPa polyethylene glycol (PEG)-6000 solutions. Our results indicated that maize embryos gradually acquired and lost desiccation tolerance during development and germination, respectively. The acquirement and loss of desiccation tolerance of embryos during development and germination were related to the ability of antioxidant enzymes including superoxide dismutase (SOD, EC 1.15.1.1), ascorbate peroxidase (APX, EC 1.11.1.11), catalase (CAT, EC 1.11.1.6), glutathione reductase (GR, EC 1.6.4.2) and dehydroascorbate reductase (DHAR, EC 1.8.5.1) to scavenge reactive oxygen species (ROS) and to control MDA content. Compared with treatment in water, PEG-6000 treatment could markedly delay the loss of desiccation tolerance of germinating embryos by delaying water uptake and time course of germination, increasing GR activity and decreasing MDA content. Our data showed the combination of antioxidant enzyme activity and MDA content is a good parameter for assessing the desiccation tolerance of maize embryos. In addition, H2O2 accumulated in mature embryos and PEG-treated embryos after drying, which was at least partially related to a longer embryo/seedling length in rehydration and the physiological mechanisms of priming. (C) 2013 Published by Elsevier Masson SAS.
学科主题Plant Sciences
WOS关键词ANTIOXIDANT ENZYME-ACTIVITIES ; ZEA-MAYS L ; HYDROGEN-PEROXIDE ; SEED-GERMINATION ; RESPIRATION ; GLUTATHIONE ; METABOLISM ; MATURATION ; STRESS ; WHEAT
WOS研究方向Plant Sciences
语种英语
WOS记录号WOS:000321083500009
资助机构National Science and Technology Support Program of China [2012BAC01B05]; National Science Foundation of China [31200515]; Surface Project of Natural Science Foundation of Yunnan Province [2012FB179]
公开日期2013-10-16
源URL[http://ir.kib.ac.cn:8080/handle/151853/16865]  
专题昆明植物研究所_中国西南野生生物种质资源库
作者单位1.Chinese Acad Sci, Key Lab Biodivers & Biogeog, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Germplasm Bank Wild Species, Kunming Inst Bot, Kunming 650204, Peoples R China
3.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Hui,Song, Songquan. Change in desiccation tolerance of maize embryos during development and germination at different water potential PEG-6000 in relation to oxidative process[J]. PLANT PHYSIOLOGY AND BIOCHEMISTRY,2013,68:61-70.
APA Huang, Hui,&Song, Songquan.(2013).Change in desiccation tolerance of maize embryos during development and germination at different water potential PEG-6000 in relation to oxidative process.PLANT PHYSIOLOGY AND BIOCHEMISTRY,68,61-70.
MLA Huang, Hui,et al."Change in desiccation tolerance of maize embryos during development and germination at different water potential PEG-6000 in relation to oxidative process".PLANT PHYSIOLOGY AND BIOCHEMISTRY 68(2013):61-70.

入库方式： OAI收割

来源：昆明植物研究所

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