Synergistic effects of bacillus amyloliquefaciens (GB03) and water retaining agent on drought tolerance of perennial ryegrass

An Yu Su, Shu Qi Niu, Yuan Zheng Liu, Ao Lei He, Qi Zhao, Paul Pare, Meng Fei Li, Qing Qing Han, Sardar Ali Khan, Jin Lin Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

Water retaining agent (WRA) is widely used for soil erosion control and agricultural water saving. Here, we evaluated the effects of the combination of beneficial soil bacterium Bacillus amyloliquefaciens strain GB03 and WRA (the compound is super absorbent hydrogels) on drought tolerance of perennial ryegrass (Lolium perenne L.). Seedlings were subjected to natural drought for maximum 20 days by stopping watering and then rewatered for seven days. Plant survival rate, biomass, photosynthesis, water status and leaf cell membrane integrity were measured. The results showed that under severe drought stress (20-day natural drought), compared to control, GB03, WRA and GB03+WRA all significantly improved shoot fresh weight, dry weight, relative water content (RWC) and chlorophyll content and decreased leaf relative electric conductivity (REC) and leaf malondialdehyde (MDA) content; GB03+WRA significantly enhanced chlorophyll content compared to control and other two treatments. Seven days
Original languageEnglish
JournalInternational Journal of Molecular Sciences
StatePublished - Dec 11 2018

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