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Authors Guo, YQ; Tian, ZY; Yan, DL; Zhang, J; Qin, P
Author Full Name Guo, Yuqi; Tian, Zengyuan; Yan, Daoliang; Zhang, Jie; Qin, Pei
Title Effects of nitric oxide on salt stress tolerance in Kosteletzkya virginica
Source LIFE SCIENCE JOURNAL-ACTA ZHENGZHOU UNIVERSITY OVERSEAS EDITION
Language English
Document Type Article
Author Keywords Kosteletzkya virginica; salt stress; NO; physiological effects
Keywords Plus STIMULATES SEED-GERMINATION; LATERAL ROOT-FORMATION; PHOSPHATIDIC-ACID; PLANT HEMOGLOBINS; OSMOTIC-STRESS; SALICYLIC-ACID; TOBACCO; DEFENSE; LEAVES; GROWTH
Abstract Salt stress is considered to be a major limiting factor for plant growth and crop productivity. Our previous study showed that exogenous application of sodium nitroprusside ( 60 mu M SNP), a nitric oxide ( NO) donor, could attenuate salt injuries in Kosteletzkya virginica. To further understand such protective roles of NO against salt stress, the effects of exogenous SNP on dry weight, activities of major antioxidant enzymes, proline accumulation, lipid peroxidation and distribution of sodium in K. virginica under salt stress were investigated. Application of SNP can increase dry weight, activities of catalase, peroxidase and superoxide dismutase, proline accumulation and decrease MDA contents in the presence of SNP under salt stress. Treatment with NaCl at 100, 200, 300 and 400 mM and SNP reduced Na+ levels but increased K+ levels in roots and shoots in comparison with the NaCl-treated plants. Correspondingly, the plants treated with exogenous SNP and NaCl maintained a lower ratio of [Na+]/[K+] in NaCl-stressed plants. These data suggest that NO might confer salt tolerance in K. virginica by preventing both oxidative membrane damage and translocation of Na+ from root to shoots. [Life Science Journal. 2009; 6(1): 67 - 75] (ISSN: 1097 - 8135).
Author Address [Guo, Yuqi; Yan, Daoliang; Zhang, Jie; Qin, Pei] Nanjing Univ, Halophyte Res Lab, Nanjing 210093, Peoples R China; [Guo, Yuqi; Tian, Zengyuan] Zhengzhou Univ, Dept Bioengn, Zhengzhou 450001, Henan, Peoples R China
Reprint Address Qin, P (reprint author), Nanjing Univ, Halophyte Res Lab, Nanjing 210093, Peoples R China.
E-mail Address qinpei@nju.edu.cn
Funding Agency and Grant Number Chinese National Science and Technology Program [2006BAD09A04, 2006BAD09A08]
Funding Text Supported by the
Times Cited 33
Total Times Cited Count (WoS, BCI, and CSCD) 38
Publisher MARSLAND PRESS
Publisher City LANSING
Publisher Address PO BOX 21126, LANSING, MI 48909 USA
ISSN 1097-8135
29-Character Source Abbreviation LIFE SCI J
ISO Source Abbreviation Life Sci. J.
Year Published 2009
Volume 6
Issue 1
Beginning Page 67
Ending Page 75
Page Count 9
Web of Science Category Biology
Subject Category Life Sciences & Biomedicine - Other Topics
Document Delivery Number 443BA
Unique Article Identifier WOS:000265884000013
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