Impact of different abiotic stresses on growth, photosynthetic electron transport chain, nutrient uptake and enzyme activities of Cu-acclimated Anabaena doliolum

被引：34

作者：

Thapar, Riti ^{[1
]}

Srivastava, Ashish Kumar ^{[1
]}

Bhargava, Poonam ^{[1
]}

Mishra, Yogesh ^{[1
]}

Rai, Lai Chand ^{[1
]}

机构：

[1] Banaras Hindu Univ, Ctr Adv Study Bot, Algal Biol Lab, Mol Biol Sect, Varanasi 221005, Uttar Pradesh, India

来源：

JOURNAL OF PLANT PHYSIOLOGY | 2008年 / 165卷 / 03期

关键词：

Anabaena doliolum; copper acclimated; glutamine synthetase; photosynthetic etectron transport activity; photosystem II;

D O I：

10.1016/j.jplph.2007.05.002

中图分类号：

Q94 [植物学];

学科分类号：

071001 [植物学];

摘要：

This study provides a comparative account of the effects of cadmium, temperature, ultraviolet-B and sodium chloride on the growth, photosynthesis, nutrient uptake and enzyme activities of untreated control and copper-acclimated Anaboena doliolum. Reduction in all the studied parameters, except carotenoids, was maximum for sodium chloride followed by ultraviolet-B, temperature and cadmium treatments, the reduction being greater in control than acclimated A. doliolum. Among the various parameters, photosystem II was most sensitive for all the stresses in both control and acclimated A. doliolum. Likewise, 02 evolution was more susceptible to various stressors than C-14 uptake. Ammonium uptake and glutamine synthetase (GS, EC 6.3.1.2) were the least affected parameters. As compared to control, acclimated Anabaena exhibited higher ATP content under normal conditions. These results attest our hypotheses that acclimated Anabaena was physiologically more robust than control and that salinity was more injurious to the test organism than other abiotic stresses investigated. (C) 2007 Elsevier GmbH. All rights reserved.

引用

页码：306 / 316

页数：11

共 46 条

[1]

STUDIES ON NITROGEN-FIXING BLUE-GREEN ALGAE .1. GROWTH AND NITROGEN FIXATION BY ANABAENA-CYLINDRICA LEMM [J].