Journal of Food, Agriculture and Environment
Vol 11,
Issue 3&4,2013
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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Exogenous sodium nitroprusside promotes high temperature tolerance in rice seedlings
Author(s):
Yong Zhu,
Xiaoyan Sun, Xiaohai Tian, Huawen Zou *Recieved Date: 2013-06-08, Accepted Date: 2013-09-20
Abstract:Nitric oxide (NO), as a new signal molecular, is now proved to be involved in plant development and resistances to many biotic and abiotic stresses. In this study, an experiment was conducted to assess the effects of sodium nitroprusside (SNP), a NO donor, on growth of rice seedlings under high temperature stress. Results showed that exogenous application of SNP could significantly alleviate the inhibition of growth from high temperature stress. The leaf chlorophyll content, fresh weight (FW) and dry weight (DW) of stressed plants all increased. Moreover, application of SNP enhanced the antioxidant enzymes (SOD, CAT and GR) activities and proline content during the whole high temperature period, on the contrary, reduced the ion leakage ration, MDA and H2O2 content. However, exogenous SNP had no significant effects on rice seedlings growth and physiological traits in normal condition. This finding shed light on the fact that NO can improve the resistance of rice seedlings to high temperature.
Keywords:Nitric oxide,
rice, high temperature, oxidative stress, antioxidant enzymeJournal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Agriculture
Pages: 1186-1190
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