Plant Growth-Promoting Rhizobacteria Enhance Sweet Cherry Root System Development Through the Production of Volatile Organic Compounds.

IF 4.7 2区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Foods Pub Date : 2025-07-03 DOI:10.3390/foods14132369

Nan Zeng, Rutao Gai, Dandan Wang, Jiahe Pang, Dingcun Zhang, Junliang Ge, Xinyue Bi, Zhiyong Zhang, Ning Zhang, Bingxue Li

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引用次数: 0

Abstract

Sweet cherry (Prunus avium 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-Pantoea ananatis D1-28, Burkholderia sp. D4-24, and Burkholderia territorii D4-36-on cherry root development and rhizosphere microbial communities. The results indicate that when D1-28 and D4-24 strains were at 10³ cfu·mL^-1 and D4-36 was at 10⁵ CFU·mL^-1, 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.

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植物促生根瘤菌通过产生挥发性有机物促进甜樱桃根系发育。

甜樱桃（Prunus avium L.）作为一种兼具营养和保健功能的高经济价值水果，由于根系发育不全和果园条件不理想，其生长受到严重制约。促进植物生长的根瘤菌（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具有应用潜力。本研究系统评价了3种PGPR菌株pantoea ananatis D1-28、Burkholderia sp. D4-24和Burkholderia territorii d4 -36对樱桃根系发育和根际微生物群落的影响。结果表明，D1-28和D4-24菌株在103 cfu·mL-1、D4-36菌株在105 cfu·mL-1时，其VOCs促生长效果最佳。与对照组相比，处理后的樱桃幼苗株高、总生物量、根长、根表面积和根体积等指标均有显著改善。这些菌株的挥发性有机化合物通过调节樱桃根部生长素合成途径协同促进植物生长，同时提高有益根际微生物的相对丰度。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，促进樱桃根系发育提供理论依据。

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来源期刊

Foods Immunology and Microbiology-Microbiology

CiteScore

7.40

自引率

15.40%

发文量

3516

审稿时长

15.83 days

期刊介绍： Foods (ISSN 2304-8158) is an international, peer-reviewed scientific open access journal which provides an advanced forum for studies related to all aspects of food research. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists, researchers, and other food professionals to publish their experimental and theoretical results in as much detail as possible or share their knowledge with as much readers unlimitedly as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. There are, in addition, unique features of this journal: manuscripts regarding research proposals and research ideas will be particularly welcomed electronic files or software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material we also accept manuscripts communicating to a broader audience with regard to research projects financed with public funds