African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Effects of nitric oxide on some physiological characteristics of maize seedlings under waterlogging

Ben Wang1, Hongfang Liu2, Cuihua Li1, Yong Zhu1, Xiaohai Tian1, Guohui Ma3 and Huawen Zou1*
1Engineering Research Center of Wetland Agriculture in the Central Yangtze, Ministry of Education, Yangtze University, Jingzhou 434025, China. 2Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China. 3China National Hybrid Rice Research and Development Center, Changsha 410125, China.
Email: [email protected]

  •  Accepted: 22 August 2011
  •  Published: 19 September 2011

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 both morphological and physiological characteristics of maize under waterlogging stress. Results showed that SNP could increase height, dry weight and activities of catalase, peroxidase and superoxide dismutase, and decrease MDA content and ion leakage ratio under waterlogging stress. This finding shed light on the fact that NO can improve the resistance to waterlogging. To our knowledge, it is the first report of NO function in waterlogging.

 

Key words: Nitric oxide, maize, waterlogging, antioxidant enzyme.