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	Changes in the pattern of antioxidant enzymes in wheat exposed to water deficit and rewatering
	Feng, Z; Jin-Kui, G; Ying-Li, Y; Wen-Liang, H; Li-Xin, Z
刊名	ACTA PHYSIOLOGIAE PLANTARUM
	2004
卷号	26期号:3页码:345-352
关键词	ascorbate peroxidase catalase glutathione reductase native staining peroxidase polyacrylamide gel electrophoresis superoxide dismutase water deficit
ISSN号	0137-5881
通讯作者	Li-Xin, Z()
英文摘要	Antioxidant defenses in two wheat cultivars differing in sensitivity to dehydration (YouJian (YJ-24) more sensitive than Long-Chun (LC-20) were analyzed during water deficit and rewatering. Resistant cultivar (LC-20) showed a higher relative water content than the sensitive cultivar (YJ-24) during the whole period of water withholding. In order to analyze the changes of antioxidant enzymes, native PAGE analysis of protein extract were performed. Wheat leaves had two isoforms of Mn-superoxide dismutase (SOD), two isoforms of Cu/Zn-SOD and one of Fe-SOD. Three catalase (CAT) isoforms were identified in the leaves of wheat. The activities of SOD and CAT isoforms were increased in two cultivars under water deficit. The intensities of SOD and CAT isoforms were slightly lower in LC-20 and increased continuously in YJ-24 after rewatering. Peroxidase (POD) isoforms were significantly increased during the whole dehydration-rehydration period. Three ascorbate peroxidase (APX) isoforms were present in gel. APX-1 and APX-3 were enhanced during water deficit and decreased during rewatering in LC-20. In YJ-24 only the activities of APX-2 were increased under water deficit. Seven isoforms of glutathione reductase (GR) were detected in the native gel. Activities of most of GR isoforms were higher in tolerant (LC-20) than in sensitive cultivar (YJ-24). Different isoforms of GR in two wheat cultivars behaved differently underwater deficit and rewatering. These results collectively suggest that water deficit activates the SOD, CAT and ascorbate-glutathione cycle in wheat leaves. The response of enzyme isoforms to drought is not the same for all isoforms of antioxidant enzymes in two wheat cultivars.
收录类别	SCI
WOS关键词	OXIDATIVE STRESS TOLERANCE ; PICEA-ABIES L ; SUPEROXIDE-DISMUTASE ; GLUTATHIONE-REDUCTASE ; ASCORBATE PEROXIDASE ; ARABIDOPSIS-THALIANA ; SUNFLOWER SEEDLINGS ; PLANTS ; DROUGHT ; RESPONSES
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
语种	英语
出版者	POLISH ACAD SCIENCES DEPT PLANT PHYSIOLOGY
WOS记录号	WOS:000224255500014
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555623
专题	寒区旱区环境与工程研究所
通讯作者	Li-Xin, Z
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Sch Life Sci, Lanzhou 730000, Peoples R China 3.Gansu Agr Univ, Fac Agron, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Feng, Z,Jin-Kui, G,Ying-Li, Y,et al. Changes in the pattern of antioxidant enzymes in wheat exposed to water deficit and rewatering[J]. ACTA PHYSIOLOGIAE PLANTARUM,2004,26(3):345-352.
APA	Feng, Z,Jin-Kui, G,Ying-Li, Y,Wen-Liang, H,&Li-Xin, Z.(2004).Changes in the pattern of antioxidant enzymes in wheat exposed to water deficit and rewatering.ACTA PHYSIOLOGIAE PLANTARUM,26(3),345-352.
MLA	Feng, Z,et al."Changes in the pattern of antioxidant enzymes in wheat exposed to water deficit and rewatering".ACTA PHYSIOLOGIAE PLANTARUM 26.3(2004):345-352.

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