植物促生根际细菌通过产生挥发性有机化合物促进甜樱桃根系发育。
Plant Growth-Promoting Rhizobacteria Enhance Sweet Cherry Root System Development Through the Production of Volatile Organic Compounds.
作者信息
Zeng Nan, Gai Rutao, Wang Dandan, Pang Jiahe, Zhang Dingcun, Ge Junliang, Bi Xinyue, Zhang Zhiyong, Zhang Ning, Li Bingxue
机构信息
College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China.
College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China.
出版信息
Foods. 2025 Jul 3;14(13):2369. doi: 10.3390/foods14132369.
Sweet cherry ( L.), as a high-economic-value fruit with both nutritional and health functions, faces severely constrained plant growth due to underdeveloped root systems and suboptimal orchard site conditions. Plant growth-promoting rhizobacteria (PGPR) demonstrate application potential in regulating plant development and improving soil structure through the release of volatile organic compounds (VOCs). This study systematically evaluated the effects of VOCs from three PGPR strains- D1-28, sp. D4-24, and D4-36-on cherry root development and rhizosphere microbial communities. The results indicate that when D1-28 and D4-24 strains were at 10 cfu·mL and D4-36 was at 10 CFU·mL, their VOCs exhibited optimal growth-promoting effects. Compared with the control group, significant improvements were observed in cherry seedling parameters, including plant height, total biomass, root length, root surface area, and root volume. The VOCs from these strains synergistically promoted plant growth by regulating auxin synthesis pathways in cherry roots while enhancing the relative abundance of beneficial rhizosphere microorganisms. This study establishes the strain-concentration-effect relationship, providing a theoretical foundation to optimize soil microbial environments and promote cherry root development using PGPR.
甜樱桃（Prunus avium L.）作为一种具有营养和健康功能的高经济价值水果，由于根系发育不良和果园立地条件欠佳，面临着植物生长严重受限的问题。植物促生根际细菌（PGPR）通过释放挥发性有机化合物（VOCs），在调节植物发育和改善土壤结构方面显示出应用潜力。本研究系统评估了三种PGPR菌株——D1-28、芽孢杆菌属（Bacillus）D4-24和芽孢杆菌属（Bacillus）D4-36——的VOCs对樱桃根系发育和根际微生物群落的影响。结果表明，当D1-28和D4-24菌株浓度为10⁸ cfu·mL⁻¹，D4-36菌株浓度为10⁷ CFU·mL⁻¹时，它们的VOCs表现出最佳的促生长效果。与对照组相比，樱桃幼苗参数，包括株高、总生物量、根长、根表面积和根体积，均有显著改善。这些菌株的VOCs通过调节樱桃根中的生长素合成途径，同时提高根际有益微生物的相对丰度，协同促进植物生长。本研究建立了菌株-浓度-效应关系，为利用PGPR优化土壤微生物环境和促进樱桃根系发育提供了理论基础。
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