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<p>Rhizosphere microbes with plant growth-promoting (PGP) traits can sustain crop productivity, yet endophyte-derived synthetic communities (SynComs) from hypersaline environments remain underexplored. We hypothesize that halophyte endophyte-derived SynComs improve stress tolerance in soybean under salinity. We isolated culturable endophytic bacteria from halophytic plants, screened isolates for PGP traits and intrinsic salt tolerance, validated selected strains on soybean, and assembled SynComs. Stepwise screening resulted in 20 strains selection. <i>Bacillus cereus</i>-B14 and <i>Lysinibacillus sphaericus</i>-B91 increased seedlings’ growth as compared to uninoculated plants, and <i>Salinicola pertrichatus</i>-B28 increased biomass under salinity. We constructed SynCom5, SynCom10, and SynCom20 (5, 10, and 20 strains) and tested them under salinity and control conditions. All SynCom treatments improved the plant growth attributes compared to uninoculated plants under salinity, in which SynCom10 performed best. SynCom applications were associated with lower expression of ethylene biosynthesis genes under salinity. These findings provide a foundation for developing SynComs for crop productivity under salinity.</p><p></p>

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Halophyte-derived bacterial SynComs improve soybean growth under salinity stress

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年8月4日

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  • Waqar Ahmad,
  • Tisha Haukongo,
  • Jason Prez,
  • Eunhea Kwon,
  • Abdul Latif Khan

摘要

Rhizosphere microbes with plant growth-promoting (PGP) traits can sustain crop productivity, yet endophyte-derived synthetic communities (SynComs) from hypersaline environments remain underexplored. We hypothesize that halophyte endophyte-derived SynComs improve stress tolerance in soybean under salinity. We isolated culturable endophytic bacteria from halophytic plants, screened isolates for PGP traits and intrinsic salt tolerance, validated selected strains on soybean, and assembled SynComs. Stepwise screening resulted in 20 strains selection. Bacillus cereus-B14 and Lysinibacillus sphaericus-B91 increased seedlings’ growth as compared to uninoculated plants, and Salinicola pertrichatus-B28 increased biomass under salinity. We constructed SynCom5, SynCom10, and SynCom20 (5, 10, and 20 strains) and tested them under salinity and control conditions. All SynCom treatments improved the plant growth attributes compared to uninoculated plants under salinity, in which SynCom10 performed best. SynCom applications were associated with lower expression of ethylene biosynthesis genes under salinity. These findings provide a foundation for developing SynComs for crop productivity under salinity.