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<p>Plants are often exposed to various abiotic stresses that hinder growth, development, and yield. Drought, a major stress, threatens global productivity and may worsen with climate change. To cope, plants adapt through morphological, metabolic, and cellular changes to endure stress. The present study aimed to investigate the effects of co-inoculation with <b>1-aminocyclopropane-1-carboxylate deaminase</b> producing <i>Bacillus aryabhattai</i> and <i>Bacillus vallismortis</i> on the alleviation of drought stress in <i>Eryngium foetidum</i> L. under greenhouse conditions. Dual inoculated plants demonstrated better performance compared to uninoculated or single-inoculated plants under two cycles of drought stress. Significant improvements were observed in root length (2.8 fold), shoot length (two&#xa0;fold), root fresh weight (two&#xa0;fold), and shoot fresh weight (three&#xa0;fold), along with an increase in the number of leaves and leaf surface area with dual inoculated plants. <b>Flowering</b> was exclusively noted in plants inoculated with <Emphasis Type="BoldItalic">B. vallismortis</Emphasis> and those receiving dual inoculation. The dual-treated plants exhibited higher total chlorophyll content, relative water content, and peroxidase activity, along with reduced lipid peroxidation and electrolyte leakage. These findings indicate that co-inoculation with <Emphasis Type="BoldItalic">B. aryabhattai</Emphasis> and <Emphasis Type="BoldItalic">B. vallismortis</Emphasis> significantly enhances drought tolerance in <Emphasis Type="BoldItalic">E.</Emphasis><i> foetidum</i>, making it more resilient to drought stress compared to treatments with either bacterium alone.</p>

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Effect of co-inoculation of Bacillus aryabhattai and Bacillus vallismortis in ameliorating water stress in Eryngium foetidum under greenhouse condition

  • 期刊论文

  • 发表日期：

    2026年1月29日

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  • Sadhana Venkatesh,
  • Nagananda Govinahalli Shivashankara,
  • Sandeep Suryan,
  • Swetha Seshagiri

摘要

Plants are often exposed to various abiotic stresses that hinder growth, development, and yield. Drought, a major stress, threatens global productivity and may worsen with climate change. To cope, plants adapt through morphological, metabolic, and cellular changes to endure stress. The present study aimed to investigate the effects of co-inoculation with 1-aminocyclopropane-1-carboxylate deaminase producing Bacillus aryabhattai and Bacillus vallismortis on the alleviation of drought stress in Eryngium foetidum L. under greenhouse conditions. Dual inoculated plants demonstrated better performance compared to uninoculated or single-inoculated plants under two cycles of drought stress. Significant improvements were observed in root length (2.8 fold), shoot length (two fold), root fresh weight (two fold), and shoot fresh weight (three fold), along with an increase in the number of leaves and leaf surface area with dual inoculated plants. Flowering was exclusively noted in plants inoculated with B. vallismortis and those receiving dual inoculation. The dual-treated plants exhibited higher total chlorophyll content, relative water content, and peroxidase activity, along with reduced lipid peroxidation and electrolyte leakage. These findings indicate that co-inoculation with B. aryabhattai and B. vallismortis significantly enhances drought tolerance in E. foetidum, making it more resilient to drought stress compared to treatments with either bacterium alone.