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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 | |
Huang, Hui1,2; Song, Songquan2 | |
2013 | |
发表期刊 | PLANT PHYSIOLOGY AND BIOCHEMISTRY |
ISSN | 0981-9428 |
卷号 | 68页码:61-70 |
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. |
关键词 | A combined model Antioxidant enzyme Desiccation tolerance Hydrogen peroxide Maize embryos during development and germination Malonyldialdehyde PEG-6000 treatment |
学科领域 | Plant Sciences |
DOI | 10.1016/j.plaphy.2013.02.029 |
收录类别 | SCI |
语种 | 英语 |
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 | Science Citation Index Expanded (SCI-EXPANDED) |
WOS记录号 | WOS:000321083500009 |
出版者 | ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER |
文献子类 | Article |
出版地 | PARIS |
资助机构 | National Science and Technology Support Program of China ; National Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Surface Project of Natural Science Foundation of Yunnan Province |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/27957 |
专题 | 中科院北方资源植物重点实验室 |
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. |
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