Scholarlink

<p>Gray mold disease, caused by <i>Botrytis cinerea</i>, is a major challenge in tomato (<i>Solanum lycopersicum</i>) cultivation, leading to significant yield losses. This study investigated the biocontrol potential of rhizosphere bacteria <i>Pseudomonas fluorescens</i>, <i>Bacillus amyloliquefaciens</i>, and <i>Pseudomonas chlororaphis</i> in suppressing gray mold through inducing plant defense mechanisms and extracellular enzymatic activity. In vitro assessments of extracellular enzymatic activity (cellulase, amylase and protease), phosphate and zinc solubilization, and indole-3 acetic acid production were studied to assess the function of these rhizobacteria. In a greenhouse experiment, phytochemical analysis including chlorophyll a, b, carotene, total phenol, and flavonoid contents, and plant defense related enzyme activities such as peroxidase (POD), polyphenol oxidase (PPO), and phenylalanine ammonia-lyase (PAL) were measured to evaluate the role of rhizobacteria. Bacterial bioagents showed significant positive result compared to the untreated control. Bacterial bioagents significantly suppress pathogen growth by producing extracellular lytic enzymes and enhanced plant defense responses by plant defense enzymes. <i>Bacillus amyloliquefaciens</i> show the most noticeable effects among the three biocontrol agents. The superior biocontrol efficacy of <i>B. amyloliquefaciens</i> suggests its strong potential as an alternative to chemical fungicides, offering a sustainable strategy for managing gray mold disease in tomatoes.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Rhizobacteria-mediated biocontrol of tomato gray mold: mechanisms of induced systemic resistance and enzymatic activity

  • 期刊论文

  • 发表日期：

    2025年7月12日

查看全文
  • Md Mosaddekur Rahman,
  • Najeeb M. Almasoudi,
  • Khalid A. Asiry,
  • Kamal A. M. Abo-Elyousr

摘要

Gray mold disease, caused by Botrytis cinerea, is a major challenge in tomato (Solanum lycopersicum) cultivation, leading to significant yield losses. This study investigated the biocontrol potential of rhizosphere bacteria Pseudomonas fluorescens, Bacillus amyloliquefaciens, and Pseudomonas chlororaphis in suppressing gray mold through inducing plant defense mechanisms and extracellular enzymatic activity. In vitro assessments of extracellular enzymatic activity (cellulase, amylase and protease), phosphate and zinc solubilization, and indole-3 acetic acid production were studied to assess the function of these rhizobacteria. In a greenhouse experiment, phytochemical analysis including chlorophyll a, b, carotene, total phenol, and flavonoid contents, and plant defense related enzyme activities such as peroxidase (POD), polyphenol oxidase (PPO), and phenylalanine ammonia-lyase (PAL) were measured to evaluate the role of rhizobacteria. Bacterial bioagents showed significant positive result compared to the untreated control. Bacterial bioagents significantly suppress pathogen growth by producing extracellular lytic enzymes and enhanced plant defense responses by plant defense enzymes. Bacillus amyloliquefaciens show the most noticeable effects among the three biocontrol agents. The superior biocontrol efficacy of B. amyloliquefaciens suggests its strong potential as an alternative to chemical fungicides, offering a sustainable strategy for managing gray mold disease in tomatoes.