JOURNAL ARTICLE

Disruption of the sensor kinase phoQ gene decreases acid resistance in plant growth-promoting rhizobacterium Rahnella aquatilis HX2.

  • Published In: Journal of Applied Microbiology, 2023, v. 134, n. 2. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Peng, Jing; Xu, Zhongnan; Li, Lei; Zhao, Bingjie; Guo, Yanbin 3 of 3

Abstract

This article focuses on the role of the PhoP/PhoQ two-component regulatory system in acid resistance of Rahnella aquatilis HX2, a plant growth-promoting rhizobacterium (PGPR). The study demonstrates that mutation of the phoQ gene in strain HX2 increases sensitivity to acidic conditions in both defined media and mildly acidic soils, while also enhancing bacterial motility under acid stress. The PhoP/PhoQ system positively regulates acid resistance genes such as cfa, add, and fur, and its disruption leads to altered expression of these genes and the chaperone gene dnak. These findings highlight the importance of PhoP/PhoQ in promoting survival and function of R. aquatilis HX2 in acidic environments, offering insights for improving PGPR performance in acid-affected soils.

Additional Information

  • Source:Journal of Applied Microbiology. 2023/02, Vol. 134, Issue 2, p1
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2023
  • ISSN:1364-5072
  • DOI:10.1093/jambio/lxad009
  • Accession Number:162823991
  • Copyright Statement:Copyright of Journal of Applied Microbiology is the property of Oxford University Press / USA 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.)

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