We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The Isolate Pseudomonas multiresinivorans QL-9a Quenches the Quorum Sensing Signal and Suppresses Plant Soft Rot Disease.
- Authors
Liu, Siqi; Zhu, Xixian; Yan, Zhenchen; Liu, Hui; Zhang, Lianhui; Chen, Wenjuan; Chen, Shaohua
- Abstract
Quorum sensing (QS) is a communication mechanism used among microorganisms that regulate the population density and behavior by sensing the concentration of signaling molecules. Quorum quenching (QQ), a novel, eco-friendly, and efficient method for disease control, interferes with QS by disturbing the production and enzymatic degradation of signaling molecules, blocking communication among microorganisms, and thus has deep potential for use in plant disease control. Pectobacterium carotovorum can cause bacterial soft rot, resulting in yield reduction in a variety of crops worldwide, and can be mediated and regulated by the N-acyl homoserine lactones (AHLs), which are typical signaling molecules. In this study, a novel quenching strain of Pseudomonas multiresinivorans QL-9a was isolated and characterized, and it showed excellent degradation ability against AHLs, degrading 98.20% of N-(-3-oxohexanoyl)-L-homoserine lactone (OHHL) within 48 h. Based on the results of the gas chromatography–mass spectrometer (GC–MS) analysis, a possible pathway was proposed to decompose OHHL into fatty acids and homoserine lactone, in which AHL acylase was involved. Additionally, it has been demonstrated that the QL-9a strain and its crude enzyme are promising biocontrol agents that can considerably reduce the severity of the soft rot disease brought on by P. carotovorum, consequently preventing the maceration of a variety of host plant tissues. All of these results suggest promising applications of the QL-9a strain and its crude enzyme in the control of various plant diseases mediated by AHLs.
- Subjects
ACYL-homoserine lactones; QUORUM sensing; ERWINIA; PSEUDOMONAS; PLANT diseases; HOST plants; BIOLOGICAL pest control agents; CULTIVARS
- Publication
Plants (2223-7747), 2023, Vol 12, Issue 17, p3037
- ISSN
2223-7747
- Publication type
Article
- DOI
10.3390/plants12173037