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Plant growth-promoting rhizobacteria (PGPR) are beneficial microbes or bioinoculants that express 1-aminocyclopropan-1-carboxylic acid (ACC) deaminase. Their application lowers ACC and ethylene concentrations induced by flood stress. Pseudomonas sp. lower flood stress-induced damage in cucumber, tomato, and rapeseed. In low flood stress conditions, the application of Pseudomonas putida increases shoot biomass in transgenic Brassica napus which also expresses ACC deaminase as compared to wild-type. Application of Achromobacter xylosoxidans, Serratia ureilytica, Herbaspirillum seropedicae and Ochrobactrum rhizosphaerae protects Ocimum sanctum from the adverse effects caused by flood stress. Application of Mesorhizobium sp. transformed to express ACC deaminase increases nodulation of Cicer arietinum in waterlogging conditions. Rice seedlings under submergence treated with Microbacterium sp., Paenbiacillus sp., and Methylophagasp have lower ethylene levels. Thus, PGPR can be successfully used to mitigate flood stress-induced damage to many important crop plants.

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A Brief Overview of Beneficial Microbes or Bio Inoculants to Lower Flood Stress-Induced Damage of Crop Plants

  • 章节

  • 发表日期：

    2025年

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  • Monika Keisham,
  • Nellie Laisram

摘要

Plant growth-promoting rhizobacteria (PGPR) are beneficial microbes or bioinoculants that express 1-aminocyclopropan-1-carboxylic acid (ACC) deaminase. Their application lowers ACC and ethylene concentrations induced by flood stress. Pseudomonas sp. lower flood stress-induced damage in cucumber, tomato, and rapeseed. In low flood stress conditions, the application of Pseudomonas putida increases shoot biomass in transgenic Brassica napus which also expresses ACC deaminase as compared to wild-type. Application of Achromobacter xylosoxidans, Serratia ureilytica, Herbaspirillum seropedicae and Ochrobactrum rhizosphaerae protects Ocimum sanctum from the adverse effects caused by flood stress. Application of Mesorhizobium sp. transformed to express ACC deaminase increases nodulation of Cicer arietinum in waterlogging conditions. Rice seedlings under submergence treated with Microbacterium sp., Paenbiacillus sp., and Methylophagasp have lower ethylene levels. Thus, PGPR can be successfully used to mitigate flood stress-induced damage to many important crop plants.