Journal article
How exogenous nitric oxide regulates nitrogen assimilation in wheat seedlings under different nitrogen sources and levels
PLOS ONE, Vol.13(1), e0190269
2018
Abstract
Nitrogen (N) is one of the most important nutrients for plants and nitric oxide (NO) as a signaling plant growth regulator involved in nitrogen assimilation. Understanding the influence of exogenous NO on nitrogen metabolism at the gene expression and enzyme activity levels under different sources of nitrogen is vitally important for increasing nitrogen use efficiency (NUE). This study investigated the expression of key genes and enzymes in relation to nitrogen assimilation in two Australian wheat cultivars, a popular high NUE cv. Spitfire and a normal NUE cv. Westonia, under different combinations of nitrogen and sodium nitroprusside (SNP) as the NO donor. Application of NO increased the gene expressions and activities of nitrogen assimilation pathway enzymes in both cultivars at low levels of nitrogen. At high nitrogen supplies, the expressions and activities of N assimilation genes increased in response to exogenous NO only in cv. Spitfire but not in cv. Westonia. Exogenous NO caused an increase in leaf NO content at low N supplies in both cultivars, while under high nitrogen treatments, cv. Spitfire showed an increase under ammonium nitrate (NH4NO3) treatment but cv. Westonia was not affected. N assimilation gene expression and enzyme activity showed a clear relationship between exogenous NO, N concentration and N forms in primary plant nitrogen assimilation. Results reveal the possible role of NO and different nitrogen sources on nitrogen assimilation in Triticum aestivum plants.
Details
- Title
- How exogenous nitric oxide regulates nitrogen assimilation in wheat seedlings under different nitrogen sources and levels
- Authors/Creators
- S. Balotf (Author/Creator) - Shiraz UniversityS. Islam (Author/Creator)G. Kavoosi (Author/Creator) - Shiraz UniversityB. Kholdebarin (Author/Creator) - Shiraz UniversityA. Juhász (Author/Creator) - Murdoch UniversityW. Ma (Author/Creator) - Murdoch University
- Publication Details
- PLOS ONE, Vol.13(1), e0190269
- Publisher
- Public Library of Science
- Identifiers
- 991005546025107891
- Copyright
- Copyright: © 2018 Balotf et al.
- Murdoch Affiliation
- School of Veterinary and Life Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.1637 Plant Nitrogen Metabolism
- Web Of Science research areas
- Plant Sciences
- ESI research areas
- Plant & Animal Science