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中国沙漠 ›› 2022, Vol. 42 ›› Issue (3): 251-260.DOI: 10.7522/j.issn.1000-694X.2022.00059

• • 上一篇    

浸种对兰州百合( Lilium davidii var. unicolor )根际土壤微生物区系的影响

李怡彬1(), 史贵红2,3, 师桂英2(), 杨宏羽2, 李慧2   

  1. 1.四川农业大学 生命科学学院,四川 雅安 625000
    2.甘肃农业大学 园艺学院,甘肃 兰州 730070
    3.丹凤县农业农村局,陕西 丹凤 726200
  • 收稿日期:2022-02-19 修回日期:2022-04-06 出版日期:2022-05-20 发布日期:2022-06-01
  • 通讯作者: 师桂英
  • 作者简介:师桂英(E-mail: shigy@gsau.edu.cn
    李怡彬(2001—),女,甘肃兰州人,本科生,生物技术专业。E-mail: 349815108@qq.com
  • 基金资助:
    国家自然科学基金项目(31860549);兰州市科技计划项目(2017-4-95)

Effects of seed soaking on the changes of soil Microorganism flora in the rhizosphere of Lanzhou lily

Yibin Li1(), Guihong Shi2,3, Guiying Shi2(), Hongyu Yang2, Hui Li2   

  1. 1.College of Life Science,Sichuan Agricultural University,Ya'an 625000,Sichuan,China
    2.College of Horticulture,Gansu Agricultural University,Lanzhou 730070,China
    3.Danfeng County Agricultural and Rural Bureau,Danfeng 726200,Shaanxi,China
  • Received:2022-02-19 Revised:2022-04-06 Online:2022-05-20 Published:2022-06-01
  • Contact: Guiying Shi

摘要:

为研究种子表面消毒处理对兰州百合(Lilium davidii var. unicolor)根际土壤微生物群落结构的影响,寻找调控植株生长的关键细菌与真菌类群,本研究采用二代测序技术(NGS)分析了种球浸种处理后百合植株苗期根际土壤细菌及真菌微生物区系的变化。结果表明:浸种处理显著增加土壤细菌丰度,改变土壤真菌和细菌微生物群落结构。真菌Penicillium相对丰度显著增加,MicroascusChaetomium相对丰度显著降低;Proteobacteria及其成员属DevosiaMesorhizobiumPseudarthrobacter相对丰度显著降低。FlavobacteriumJatrophihabitans相对丰度显著增加。浸种处理诱导百合幼苗根际土壤真菌与细菌微生物群落结构发生改变,益生真菌Penicillium及其种P. aurantiogriseum,益生细菌FlavobacteriumJatrophihabitans富集,有害细菌Devosia减少,提高土壤健康性,促进百合幼苗生长。

关键词: 兰州百合(Lilium davidii var. unicolor), 浸种, 细菌群落, 真菌群落, 生长发育

Abstract:

The purpose of this study was to evaluate the effects of seed surface disinfection on the rhizosphere soil microbial community structure of Lanzhou lily (Lilium davidii var. unicolor), and to search for key bacteria and fungi that regulate plant growth. Next-generation sequencing technology (NGS) was used to analyse the changes of bacteria and fungi in plant rhizosphere soil after SD treatment (bulb seed soaking treatment). The findings shows that: the SD treatment has increased soil bacterial abundance index (Chao1) significantly, and has changed the microbial community structure as well. It is significant that the relative abundances (RA) of the genus Penicillium have increased, while the genera Microascus and Chaetomium RA have decreased significantly. It is significant that the phylum Proteobacteria and its subset genus Devosia and Mesorhizobium and Pseudarthrobacter have decreased, while the genera Flavobacterium and Jatrophihabitans have increased. In conclusion, seed soaking induce changes in the community structure of fungi and bacteria in rhizosphere soil of lily seedlings. The enrichment of the beneficial bacteria Penicillium and its species PenicilliumAurantiogriseum,Flavobacterium and Jatrophihabitans, as well as the reduction of the harmful bacteria Devosia improve soil health and enhance lily seedlings growth.

Key words: Lanzhou lily, seed soaking, bacteria community structure, fungi community structure, growth and development

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