How exogenous nitric oxide regulates nitrogen assimilation in wheat seedlings under different nitrogen sources and levels

Article


Balotf, Sadegh, Islam, Shahidul, Kavoosi, Gholamreza, Kholdebarin, Bahman, Juhasz, Angela and Ma, Wujun. 2018. "How exogenous nitric oxide regulates nitrogen assimilation in wheat seedlings under different nitrogen sources and levels." PLoS One. 13 (1). https://doi.org/10.1371/journal.pone.0190269
Article Title

How exogenous nitric oxide regulates nitrogen assimilation in wheat seedlings under different nitrogen sources and levels

ERA Journal ID39745
Article CategoryArticle
AuthorsBalotf, Sadegh, Islam, Shahidul, Kavoosi, Gholamreza, Kholdebarin, Bahman, Juhasz, Angela and Ma, Wujun
Journal TitlePLoS One
Journal Citation13 (1)
Article Numbere0190269
Number of Pages13
Year10 Jan 2018
PublisherPublic Library of Science (PLoS)
Place of PublicationUnited States
ISSN1932-6203
Digital Object Identifier (DOI)https://doi.org/10.1371/journal.pone.0190269
Web Address (URL)https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0190269
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.

Article Publishing Charge (APC) FundingProject Funding
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 20203001. Agricultural biotechnology
Byline AffiliationsMurdoch University
Shiraz University, Iran
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