Changes of Antioxidant Defense System and Fatty Acid Composition in Bermudagrass under Chilling Stress
文献类型：期刊论文
| 作者 | Hu, Zhengrong2,3,4; Amombo, Erick2,3,4; Gitau, Margaret Mukami2,3,4; Bi, Aoyue2,3,4; Zhu, Huihui1,3; Zhang, Liang2,4; Chen, Liang3,4; Fu, Jinmin3,4 |
| 刊名 | JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE
 |
| 出版日期 | 2017-03-01 |
| 卷号 | 142期号:2页码:101-U97 |
| 关键词 | low temperature genotype glutathione gene expression reactive oxygen species |
| ISSN号 | 0003-1062 |
| DOI | 10.21273/JASHS03999-16 |
| 英文摘要 | Bermudagrass (Cynodon dactylon) is a typical and widely used warm-season turfgrass. Low temperature is one of the key environmental stress limiting its utility. However, little information is available about the differences of cold response between bermudagrass genotypes. Here, we analyzed antioxidant defense system and fatty acid composition in cold-resistant genotype WBD128 and cold-sensitive genotype WBDg17 exposed to chilling stress. Low temperature (4 degrees C) significantly decreased the relative water content, whereas increased the H2O2 and O-2(-) contents, more profoundly for WBDg17. Under chilling condition, WBD128 had higher anti O-2(-) activity than WBDg17. Besides, the contents of total glutathione, reduced glutathione (GSH) and its oxidized form (GSSG) were markedly increased by low temperature in both genotypes, whereas WBD128 had significantly higher values of GSH, total glutathione, and GSH/GSSG ratio than WBDg17. Moreover, chilling stress increased saturated fatty acids (SFAs) percentage (palmitic acid and stearic acid) in WBDg17. After chilling treatment, the proportion of linoleic acid decreased in both genotypes, particularly in WBDg17. As for unsaturated fatty acids (UFAs), the percentage of linolenic acid was increased in WBD128. In addition, chilling treatment decreased the values of double bond index (DBI), UFA/SFA ratio as well as degree of unsaturation in WBDg17. Finally, chilling stress altered the expression patterns of the genes, which encode one kind of late embryogenesis abundant proteins (LEA), superoxide dismutase (Cu/Zn SOD) C-repeat-binding factor/DRE-binding factor (CBF1), and peroxidase (POD-2). Collectively, our results revealed that natural variation of chilling tolerance in bermudagrass genotypes may be largely associated with the alterations of antioxidant defense system and fatty acid composition. |
| 资助项目 | China National Science Foundation (NSFC)[31272194] ; China National Science Foundation (NSFC)[31401915] ; China National Science Foundation (NSFC)[31428021] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000399314200004 |
| 出版者 | AMER SOC HORTICULTURAL SCIENCE |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1400]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Chen, Liang; Fu, Jinmin |
| 作者单位 | 1.South Ctr Univ Nationalities, Coll Resources & Environm Sci, Wuhan 430074, Hubei, Peoples R China 2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China 4.Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan 430074, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Zhengrong,Amombo, Erick,Gitau, Margaret Mukami,et al. Changes of Antioxidant Defense System and Fatty Acid Composition in Bermudagrass under Chilling Stress[J]. JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE,2017,142(2):101-U97. |
| APA | Hu, Zhengrong.,Amombo, Erick.,Gitau, Margaret Mukami.,Bi, Aoyue.,Zhu, Huihui.,...&Fu, Jinmin.(2017).Changes of Antioxidant Defense System and Fatty Acid Composition in Bermudagrass under Chilling Stress.JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE,142(2),101-U97. |
| MLA | Hu, Zhengrong,et al."Changes of Antioxidant Defense System and Fatty Acid Composition in Bermudagrass under Chilling Stress".JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE 142.2(2017):101-U97. |
入库方式： OAI收割
来源：武汉植物园
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