Physiological responses of two Jerusalem artichoke cultivars to drought stress induced by polyethylene glycol

被引：29

作者：

Zhang, Meide ^{[2
,3
]}

Chen, Qiang ^{[2
,3
]}

Shen, Shihua ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Bot, Ctr Energy Plant Res & Dev, Beijing 100093, Peoples R China

[2] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China

[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

ACTA PHYSIOLOGIAE PLANTARUM | 2011年 / 33卷 / 02期

关键词：

Catalase; Drought stress; Jerusalem artichoke; Malondialdehyde; Proline; Superoxide dismutase; Water status; PROLINE ACCUMULATION; ANTIOXIDANT ENZYMES; OXIDATIVE STRESS; TOLERANT; HEAT; PROTECTION; EFFICIENCY;

D O I：

10.1007/s11738-010-0549-z

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Physiological responses of two Jerusalem artichoke (Helianthus tuberosus L.) cultivars with different drought sensitivity to drought stress induced by polyethylene glycol (PEG) 6000 were investigated by characterizing water status, membrane lipid peroxidation, key antioxidant enzymes activity, and proline accumulation. It was observed that the drought-tolerant Jerusalem artichoke cv. Xiuyan maintained a relatively higher water status than the drought-sensitive cv. Yulin upon drought treatments. Meanwhile, lower levels of malondialdehyde (MDA) as well as higher levels of free proline occurred in cv. Xiuyan after 36 h drought treatments. Moreover, the activities of catalase (CAT) and superoxide dismutase (SOD) in cv. Xiuyan were higher than cv. Yulin after drought stress. These results indicated that drought sensitivities actually differ between Jerusalem artichoke cv. Xiuyan and cv. Yulin, and the cv. Xiuyan was more tolerant to drought stress caused by polyethylene glycol.

引用

页码：313 / 318

页数：6

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