期刊
BIORESOURCE TECHNOLOGY
卷 100, 期 7, 页码 2155-2161出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2008.10.041
关键词
Cadmium; Ceratophyllum demersum; Cysteine synthase; Glutathione; Phytochelatins
资金
- Council of Scientific and Industrial Research, New Delhi, India
- DBT
In the present study, the level of thiols and activity of related enzymes were investigated in coontail (Ceratophyllum demersum L.) plants to analyze their role in combating the stress caused upon exposure to cadmium (Cd; 0-10 mu M) for a duration up to 7 d. Plants showed the maximum accumulation of 1293 mu g Cd g (1) dw after 7 d at 10 mu M. Significant increases in the level of total non-protein thiols (NP-SH) including phytochelatins (PCs) as well as upstream metabolites of the PC biosynthetic pathway, cysteine and glutathione (GSH) were observed. In addition, significant increases in the activities of cysteine synthase (CS), glutathione-S-transferase (GST), glutathione reductase (GR), as well as in vitro activation of phytochelatin synthase (PCS), were noticed in response to Cd. In conclusion, under Cd stress, plants adapted to a new metabolic equilibrium Of thiols through coordinated synthesis and consumption to combat Cd toxicity and to accumulate it. (C) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据