Scholarlink

<p>Three-way interactions comprising plant (host), beneficial microbes (PGPR/PGPE), and soil-borne pathogens in the rhizosphere region, which is a dynamic ecological interface and chemical hotspot, determine the plant health or susceptibility. This review analyses the omics, which is the key tool to identify and measure the specific small-molecule metabolites that function as signals, resources, and weapons exchanged between them, resulting in complex non-additive outcomes. In a “Cry-for-help” defense strategy, key molecular sights reveal the host plant actively shapes its microbial community by releasing root exudates having organic acids and secondary metabolites. Beneficial microbes suppress the pathogens through multimodal antagonism, including competition, antibiosis (e.g., DAPG and PCA), and the induced systemic resistance (ISR). Crucially, pathogens counteract these defenses using molecular resistance mechanisms, such as efflux transporters, antimicrobial degradation, and quorum sensing (QS) to coordinate virulence. The next step is to use molecular insights and metabolomics as feedback to strategically engineer synthetic microbial consortia for robust disease resistance. The future thrust and the ultimate goal for sustainable agriculture is the translation of these successful laboratory-identified mechanisms into commercial-basedapplications at the field level.</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

Insights into rhizosphere tripartite interactions involving beneficial microbes, plants, and soil-borne pathogens

  • 期刊论文

  • 发表日期：

    2026年6月3日

查看全文
  • Srilekha Kannan,
  • Rajendran Lingan,
  • Karthiba Loganathan,
  • Anandhi Krishnan,
  • Vinothkumar Bojan

摘要

Three-way interactions comprising plant (host), beneficial microbes (PGPR/PGPE), and soil-borne pathogens in the rhizosphere region, which is a dynamic ecological interface and chemical hotspot, determine the plant health or susceptibility. This review analyses the omics, which is the key tool to identify and measure the specific small-molecule metabolites that function as signals, resources, and weapons exchanged between them, resulting in complex non-additive outcomes. In a “Cry-for-help” defense strategy, key molecular sights reveal the host plant actively shapes its microbial community by releasing root exudates having organic acids and secondary metabolites. Beneficial microbes suppress the pathogens through multimodal antagonism, including competition, antibiosis (e.g., DAPG and PCA), and the induced systemic resistance (ISR). Crucially, pathogens counteract these defenses using molecular resistance mechanisms, such as efflux transporters, antimicrobial degradation, and quorum sensing (QS) to coordinate virulence. The next step is to use molecular insights and metabolomics as feedback to strategically engineer synthetic microbial consortia for robust disease resistance. The future thrust and the ultimate goal for sustainable agriculture is the translation of these successful laboratory-identified mechanisms into commercial-basedapplications at the field level.