Biocontrol potential of Streptomyces lactacystinicus producing volatile organic compounds against postharvest anthracnose of chili pepper

文献类型： 外文期刊

第一作者： Zhong, Jie

作者： Zhong, Jie;Bai, Xin Yi;Li, Xiao Gang;Zhu, Jun Zi;Zhang, Zhuo

作者机构：

关键词： Biological control; Biofumigants; Postharvest disease; Colletotrichum species; Transcriptome

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.8； 五年影响因子：7.5 ）

ISSN： 0925-5214

年卷期： 2025 年 230 卷

页码：

收录情况： SCI

摘要： Colletotrichum scovillei is a pathogen that causes anthracnose in pepper fruit, resulting in severe postharvest losses in pepper fruit. Volatile organic compounds (VOCs) produced by microorganisms are regarded as promising environmentally safe fumigants for controlling postharvest diseases. In this study, the Streptomyces lactacystinicus ZZ-84 strain was identified as exhibiting strong antagonistic activity against C. scovillei and effectively controlling anthracnose in pepper fruit. The VOCs generated by ZZ-84 significantly inhibited the mycelial growth and conidial germination of C. scovillei, disrupted mycelial morphology, altered cell membrane permeability, and induced oxidative stress. Transcriptomic analysis revealed that the VOCs primarily affected the metabolic pathways of C. scovillei, particularly those related to protein synthesis, cell membrane integrity, redox homeostasis, and energy conversion. The volatiles 2-methyl-1-butanol, sulphuric acid dibutyl ester, and 6-methyl-2heptanone were identified as the main antagonistic compounds among the VOCs and exhibited strong antifungal activity against C. scovillei. Overall, strain ZZ-84 has the potential to serve as a microbial fumigation agent for controlling postharvest anthracnose in pepper.

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