Investigating the Impact of Tillage and Crop Rotation on the Prevalence of phlD-Carrying Pseudomonas Potentially Involved in Disease Suppression

Ridhdhi Rathore, Dermot Forristal, John Spink, David Dowling, Kieran J. Germaine

Research output: Contribution to journalArticlepeer-review

Abstract

Winter oilseed rape (OSR) is becoming an increasingly popular crop in rotations as it provides a cash crop and reduces the incidence of take-all fungal disease (caused by Gaeumannomyces graminis) in subsequent wheat production. The exact mechanism of this inhibition of fungal pathogens is not fully understood; however, the selective recruitment of bacterial groups with the ability to suppress pathogen growth and reproduction is thought to play a role. Here we examine the effect of tillage practice on the proliferation of microbes that possess the phlD gene involved in the production of the antifungal compound 2,4-diacetylphloroglucinol (2,4-DAPG), in the rhizospheres of both winter oilseed rape and winter wheat grown in rotation over a two-year period. The results showed that conservation strip tillage led to a significantly greater phlD gene copy number, both in the soil and in the roots, of oilseed rape and wheat crops, whereas crop rotation of oilseed rape and wheat did not increase the phlD gene copy number in winter wheat.

Original languageEnglish
Article number2459
JournalMicroorganisms
Volume11
Issue number10
DOIs
Publication statusPublished - Oct 2023

Keywords

  • 2,4-DAPG
  • biocontrol
  • crop rotation
  • Pseudomonas
  • tillage

Fingerprint

Dive into the research topics of 'Investigating the Impact of Tillage and Crop Rotation on the Prevalence of phlD-Carrying Pseudomonas Potentially Involved in Disease Suppression'. Together they form a unique fingerprint.

Cite this