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Author Spotlight: Discovering New Biopesticides from Bioactive Soil Microbe-Derived Natural Products

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Biocontrol potential of

Da Yeon Kim^1,2, Jae Woo Han¹, Jin Woo Lee^1,3

¹Center for Eco-Friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon, South Korea.

Frontiers in Microbiology

|June 7, 2023

Summary

This summary is machine-generated.

A novel antimicrobial peptide, chitinocin, from the bacterium Chitinophaga flava HK235 demonstrates potent antifungal activity against Botrytis cinerea. This discovery offers promising biocontrol potential for agricultural applications.

Keywords:

Chitinophaga flava antifungal activity antimicrobial peptide biocontrol plant pathogen

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Area of Science:

Microbiology
Plant Pathology
Biotechnology

Background:

Botrytis cinerea is a widespread fungal pathogen causing substantial agricultural economic losses.
Necrotrophic fungi like B. cinerea pose significant challenges to crop protection strategies.

Purpose of the Study:

To identify novel antimicrobial compounds for controlling Botrytis cinerea.
To investigate the biocontrol potential of bacterial strain Chitinophaga flava HK235.

Main Methods:

Activity-guided fractionation of Chitinophaga flava HK235 culture filtrate.
Isolation and characterization of the antimicrobial peptide chitinocin.
In vitro and in vivo assays to evaluate antifungal and biocontrol efficacy against B. cinerea.

Main Results:

Chitinophaga flava HK235 culture filtrate and isolated chitinocin exhibited potent inhibition of B. cinerea conidial germination and mycelial growth.
Chitinocin demonstrated broad-spectrum antifungal and antibacterial activity in vitro.
Treatment with chitinocin significantly reduced gray mold disease development in tomato plants.

Conclusions:

Chitinocin is a novel antimicrobial peptide with significant potential for agricultural biocontrol.
Chitinophaga flava HK235 represents a promising source for developing new strategies against Botrytis cinerea.