Halotolerant PGPB Delivered by Drip Irrigation Improve Crop Yield and Quality Through Changes in the Soil Bacterial Community

作者：Yunpeng Zhou, Bernard R. Glick, Hassan Etesami, Hongbang Liang, Felipe Bastida, Xin Wu, Naikun Kuang, Yunkai Li · 发表于：Engineering · 年份：2025 · DOI：10.1016/j.eng.2025.03.040 · 被引用次数：2 · 研究领域：Plant-Microbe Interactions and Immunity、Composting and Vermicomposting Techniques、Legume Nitrogen Fixing Symbiosis

• Halotolerant PGPB delivered by drip irrigation improved crop yield and quality on saline-alkali soils. • Impacts of drip irrigation halo-PGPB on soil nutrients and microbial community were clarified. • The mechanisms of halo-PGPB for alleviating crop saline stress were revealed. Halotolerant plant growth-promoting bacteria (PGPB) have great potential for alleviating salinity stress in crops. However, the current methods used with these bacteria are typically based on one-time inoculations, including soil basal application, seed dressing and plant infestation, all of which make it difficult to guarantee the desired plant effects. Here, we investigated the effects of seven halotolerant PGPB individually applied through a drip irrigation system in small quantities and at high frequency during the plant’s growth period on the soil physicochemical properties, plant agronomic performance and bacterial community in saline soil. Our findings revealed that drip irrigation with halotolerant PGPB notably decreased the soil pH and electrical conductivity while increasing the yield and fruit quality of jujube plants. Specifically, the Bacillus licheniformis (BL) and Bacillus mucilaginous (BM) treatments outperformed the control (no PGPB irrigation) by increasing the yield and vitamin C (VC) content by 23% and 22%, respectively. Additionally, the presence of halotolerant PGPB enriched the diversity of the bacterial community in the jujube rhizosphere and increased the relative abundance ...