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<p>The plant growth-promoting bacteria (PGPBs) produce various secondary metabolites that influence drastic positive effects by creating plant–microbe interactions. These interactions alleviate various abiotic stresses confronting plants. Drought, one of the major abiotic stresses, adversely affects <i>Zea mays</i> L. production globally. To overwhelm water scarcity, the current study was planned to explore the efficacy of plant–microbe interaction between endophyte bacteria and <i>Zea mays</i> L. The bacterial endophytes were isolated from maize roots collected from arid regions of Pakistan. Four bacterial isolates out of twenty-two were selected for seed biopriming based on their drought tolerance and plant growth-promoting characteristics; <i>Bacillus cereus</i>, <i>Enterobacter mori</i>, <i>Serratia marcescens</i>, and <i>Planococcus rifietoensis</i>. In the pot experiment, the seed biopriming effect was evaluated onto <i>Zea mays</i> L. at 100% (well-watered) and 50% field capacity (drought stress). GC–MS analysis revealed the production of various bacterial metabolites that pose significant plant–microbe interaction by improving the growth and photosynthetic characteristics as well as antioxidant enzyme activity, total phenolic, protein, proline contents, and total soluble sugars under drought and well-watered conditions. Besides oxidative stress markers notably decreased in the presence of PGPBs, while increased in the untreated control. Present investigations highlighted that the bacterial secondary metabolites could boost the growth and characteristics of <i>Zea mays</i> L. in low water conditions.</p>

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Endophyte Bacterial Metabolites: An Active Syrup for Improvement of Growth, Biomass, and Antioxidant System of Zea mays L. in Drought Condition

  • 期刊论文

  • 发表日期：

    2025年2月8日

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  • Mahwish Salman,
  • Muhammad Rizwan Javed,
  • Anam Tariq,
  • Muhammad Usama,
  • Hafiza Iqra Hanif,
  • Bushra Sadia,
  • Shazia Naheed

摘要

The plant growth-promoting bacteria (PGPBs) produce various secondary metabolites that influence drastic positive effects by creating plant–microbe interactions. These interactions alleviate various abiotic stresses confronting plants. Drought, one of the major abiotic stresses, adversely affects Zea mays L. production globally. To overwhelm water scarcity, the current study was planned to explore the efficacy of plant–microbe interaction between endophyte bacteria and Zea mays L. The bacterial endophytes were isolated from maize roots collected from arid regions of Pakistan. Four bacterial isolates out of twenty-two were selected for seed biopriming based on their drought tolerance and plant growth-promoting characteristics; Bacillus cereus, Enterobacter mori, Serratia marcescens, and Planococcus rifietoensis. In the pot experiment, the seed biopriming effect was evaluated onto Zea mays L. at 100% (well-watered) and 50% field capacity (drought stress). GC–MS analysis revealed the production of various bacterial metabolites that pose significant plant–microbe interaction by improving the growth and photosynthetic characteristics as well as antioxidant enzyme activity, total phenolic, protein, proline contents, and total soluble sugars under drought and well-watered conditions. Besides oxidative stress markers notably decreased in the presence of PGPBs, while increased in the untreated control. Present investigations highlighted that the bacterial secondary metabolites could boost the growth and characteristics of Zea mays L. in low water conditions.