Effects of arsenic on reactive oxygen species and antioxidant defense system in tomato plants

被引:14
|
作者
Singh, Vivek Kumar [1 ]
Upadhyay, Ram Sanmukh [1 ]
机构
[1] Banaras Hindu Univ, Ctr Adv Study Bot, Varanasi 221005, Uttar Pradesh, India
关键词
arsenic; antioxidative enzymes; hydroponic culture; oxidative stress; tomato; INDUCED OXIDATIVE STRESS; SUPEROXIDE-DISMUTASE; HYDROGEN-PEROXIDE; ASCORBATE; METABOLISM; KINETICS; GROWTH; ACID;
D O I
10.1080/02772248.2015.1028410
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, the generation of reactive oxygen species, the induction of oxidative stress, and the response of the antioxidative system in hydroponically grown tomato plants as the cause of arsenic-induced phytotoxicity are investigated. Reduction in plant growth was measured in terms of dry weight and length of roots and shoots, the latter accumulating more arsenic than the roots. The treatment resulted in increased formation of superoxide anion (O-2(.-)), H2O2, and thiobarbituric acid reactive substances, which indicate augmented lipid peroxidation. Superoxide dismutase, catalase (CAT), and ascorbate peroxidase activities were increased in arsenic-treated tomato plants while CAT activity was insignificantly increased.
引用
收藏
页码:1374 / 1383
页数:10
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