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  1. Home
  3. Capsicum Endophytic Bacterial Strain Ly7 And Prochloraz Synergistically Control Chilli Anthracnose.
  1. Home
  3. Capsicum Endophytic Bacterial Strain Ly7 And Prochloraz Synergistically Control Chilli Anthracnose.

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Capsicum Endophytic Bacterial Strain LY7 and Prochloraz Synergistically Control Chilli Anthracnose.

Lu Ren1,2, Nan Qin1, Junqi Ning1

  • 1College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, China.

Journal of Fungi (Basel, Switzerland)
|March 27, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

This study explored combining the bacterium Bacillus velezensis (LY7) with the fungicide prochloraz to control chilli anthracnose. The integrated approach significantly reduced disease, offering a sustainable alternative to solely chemical treatments.

Keywords:
Bacillusbacterial–fungicidal combinationbiological controlcapsicum anthracnose

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Area of Science:

  • Plant Pathology
  • Microbiology
  • Agricultural Science

Background:

  • Chilli anthracnose, caused by *Colletotrichum scovillei*, is a significant disease impacting *Capsicum* crops.
  • Over-reliance on chemical pesticides for disease management raises ecological and human health concerns.

Purpose of the Study:

  • To investigate the synergistic effects of a biological agent (*Bacillus velezensis* LY7) and a chemical fungicide (prochloraz) for controlling chilli anthracnose.
  • To identify optimal application ratios for an integrated disease management strategy.

Main Methods:

  • Isolation and identification of the antagonistic bacterial strain LY7 as *Bacillus velezensis*.
  • In vitro assessment of LY7's antifungal activity and compatibility with chemical fungicides.
  • Field trials to evaluate the efficacy of combined LY7 and prochloraz treatments.

Main Results:

  • *Bacillus velezensis* LY7 demonstrated significant inhibition of *Colletotrichum scovillei* growth (83.52% in vitro).
  • The optimal field application involved a 3:7 ratio of LY7 (1.0 × 108 CFU/mL) to prochloraz (0.75 g/L), achieving high control efficiency.
  • Electron microscopy confirmed the inhibitory impact of both agents on fungal mycelia.

Conclusions:

  • An integrated management strategy combining *Bacillus velezensis* LY7 and prochloraz offers effective control of chilli anthracnose.
  • The biofungicide LY7 can partially substitute prochloraz, contributing to reduced chemical pesticide use and promoting sustainable agriculture.