JOURNAL ARTICLE

Symbiotic nitrogen fixation suppresses root nitrate uptake in Medicago truncatula under nitrate limitation.

  • Published In: New Phytologist, 2025, v. 246, n. 5. P. 1905 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Li, Fuyu; Kumar, Anil; Xu, Ping; Murray, Jeremy D. 3 of 3

Abstract

The article published in the New Phytologist in 2025 explores how symbiotic nitrogen fixation affects root nitrate uptake in Medicago truncatula under nitrate limitation. The study reveals that nodulation suppresses root nitrate uptake by downregulating the expression of MtNRT2.1, a key nitrate uptake transporter, specifically under low nitrate conditions. The research also delves into the molecular mechanisms involved in this process, highlighting the role of glutamine and other assimilates in repressing nitrate uptake. Overall, the findings suggest that legumes prioritize nitrogen fixation over direct nitrate uptake when nitrate availability is limited, showcasing a complex interplay between symbiotic nitrogen fixation and root nitrate uptake regulation. [Extracted from the article]

Additional Information

  • Source:New Phytologist. 2025/06, Vol. 246, Issue 5, p1905
  • Document Type:Article
  • Subject Area:Agriculture and Agribusiness
  • Publication Date:2025
  • ISSN:0028-646X
  • DOI:10.1111/nph.70115
  • Accession Number:185030322
  • Copyright Statement:Copyright of New Phytologist is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Looking to go deeper into this topic? Look for more articles on EBSCOhost.