植物根际促生菌对桂花生长、生理适应性及土壤性状的影响

陈丁亿; 张小凤; 黄九荣; 王良桂; 杨秀莲

doi:10.12302/j.issn.1000-2006.202409039

陈丁亿, 张小凤, 黄九荣, 王良桂, 杨秀莲

南京林业大学学报（自然科学版） ›› 2026, Vol. 50 ›› Issue (2) : 196-204.

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南京林业大学学报（自然科学版） ›› 2026, Vol. 50 ›› Issue (2) : 196-204. DOI: 10.12302/j.issn.1000-2006.202409039

研究论文

植物根际促生菌对桂花生长、生理适应性及土壤性状的影响

作者信息 +

Effects of plant growth-promoting rhizosphere on growth, physiological adaptability and soil properties of Osmanthus fragrans

Author information +

文章历史 +

摘要

【目的】探究两种植物根际促生菌(plant growth-promoting rhizobacteria,PGPR)雷根斯堡约克菌(Yokenella regensburgei)和摩氏假单胞菌(Pseudomonas mosselii)对桂花苗生长及生理适应性的影响,为促进桂花健康生长、增强桂花生理功能、改善桂花根际土壤微生物群落提供理论依据。【方法】选取从桂花根际土壤分离所得的具有促生能力的PGPR进行盆栽实验。以1年生桂花苗为材料,通过园土盆栽的方式,设置接种雷根斯堡约克菌、摩氏假单胞菌和对照组,研究其对桂花生长、生理适应性及土壤性状的影响。【结果】2种PGPR均能促进桂花生长,增加地上和地下部分鲜质量、根长、茎长以及株高等,其中Y. regensburgei对桂花生长性状影响更显著。PGPR处理可显著提高桂花过氧化氢酶活性;PGPR的接种增加了根际土壤有机质含量,但对土壤pH、电导率、速效磷、速效钾含量均无显著影响。【结论】桂花根际促生菌Y. regensburgei、P. mosselii能够改良根际土壤性状,对桂花的生长与生理过程有促进作用,其中Y. regensburgei的综合效果更佳。所筛菌株可为开发桂花专用微生物菌肥提供策略,推动新型肥料的研发,进而促进PGPR的广泛运用。

Abstract

【Objective】This study investigated the effects of inoculating Osmanthus fragrans with two plant growth-promoting rhizobacteria (PGPR), Yokenella regensburgei and Pseudomonas mosselii, to provide a reference for future PGPR application in O. fragrans cultivation.【Method】PGPR strains isolated from O. fragrans rhizosphere soil were selected for a pot experiment. One-year-old O. fragrans seedlings were inoculated with Y. regensburgei, P. mosselii, or left untreated (control group) to assess the impacts of PGPR on plant growth, physiological adaptation, and rhizosphere soil properties.【Result】Both PGPR strains promoted plant height and increased root fresh weight, stem fresh weight, root length, and stem length. Y. regensburgei demonstrated a more significant effect on the growth characteristics of O. fragrans. Both PGPR treatment could significantly enhance the CAT of O. fragrans. PGPR application increased soil organic matter content but did not significantly alter soil pH, electrical conductivity, available phosphorus, or available potassium content.【Conclusion】The PGPR strains Y. regensburgei and P. mosselii improved the rhizosphere soil environment and enhanced the growth and physiological processes of O. fragrans, with Y. regensburgei exhibiting superior overall efficacy. These screened strains offer potential for developing specialized microbial fertilizers for O. fragrans, thereby advancing novel fertilizer research and promoting the growth of this plant species.

导出引用

陈丁亿, 张小凤, 黄九荣, 等. 植物根际促生菌对桂花生长、生理适应性及土壤性状的影响[J]. 南京林业大学学报（自然科学版）. 2026, 50(2): 196-204 https://doi.org/10.12302/j.issn.1000-2006.202409039

CHEN Dingyi, ZHANG Xiaofeng, HUANG Jiurong, et al. Effects of plant growth-promoting rhizosphere on growth, physiological adaptability and soil properties of Osmanthus fragrans[J]. Journal of Nanjing Forestry University (Natural Sciences Edition）. 2026, 50(2): 196-204 https://doi.org/10.12302/j.issn.1000-2006.202409039

中图分类号： S685.13;S718

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