生物技术通报 ›› 2021, Vol. 37 ›› Issue (12): 29-40.doi: 10.13560/j.cnki.biotech.bull.1985.2021-0190

• 研究报告 • 上一篇    下一篇

根腐病对宁夏枸杞根区土壤丛枝菌根真菌群落的影响

吕燕1(), 王文彬2, 苟琪1, 王英娜1, 李靖宇1, 刘建利1()   

  1. 1.北方民族大学生物科学与工程学院,银川 750021
    2.河北大学生命科学学院,保定 071002
  • 收稿日期:2021-02-19 出版日期:2021-12-26 发布日期:2022-01-19
  • 作者简介:吕燕,女,硕士研究生,研究方向:微生物生态学;E-mail: lvyan0205@163.com
  • 基金资助:
    宁夏自然科学基金项目(2021AAC03211);北方民族大学高层次人才引进科研启动项目(2019KYQD01);北方民族大学研究生创新项目

Effect of Root Rot on Arbuscular Mycorrhizal Fungi Community in Root Zone Soil of Lycium barbarum L.

LV Yan1(), WANG Wen-bin2, GOU Qi1, WANG Ying-na1, LI Jing-yu1, LIU Jian-li1()   

  1. 1. College of Biological Sciences and Engineering,North Minzu University,Yinchuan 750021
    2. College of Life Science,Hebei University,Baoding 071002
  • Received:2021-02-19 Published:2021-12-26 Online:2022-01-19

摘要:

探究根腐病病原菌侵染对宁夏枸杞根区土壤丛枝菌根真菌(arbuscular mycorrhizal fungi,AMF)群落组成的影响,为后续开展应用AMF防控宁夏枸杞根腐病奠定基础。从宁夏银川、宁夏中宁和甘肃靖远采集宁夏枸杞健康和根腐病发病植株根系和土壤样品,采用湿筛倾析法和AMF定殖染色法探究3个样地根区土壤AMF的孢子组成、密度和根系菌根侵染率以及AMF多样性与土壤理化因子间的相关性。结果显示,宁夏枸杞健康植株受根腐病病原菌入侵后,孢子密度、总侵染率和总球囊霉素含量不发生变化,中宁样地易提取球囊霉素含量显著升高;不同样地宁夏枸杞健康植株和发病植株根区土壤AMF群落组成差异显著(R2=0.875,P=0.001);中宁样地和靖远样地优势属种发生变化,但银川样地不变。根腐病发生改变宁夏枸杞根区土壤AMF群落结构,会引起银川样地AMF的α-多样性升高,但对中宁样地和靖远样地α-多样性无影响;AMF孢子密度、种丰度和总侵染率与土壤理化性质存在相关性,但土壤理化性质不影响AMF物种多样性,影响AMF定殖。

关键词: 宁夏枸杞, 根腐病, 丛枝菌根真菌, 多样性

Abstract:

This paper aims to explore the effects of root rot pathogen infection on the community composition of arbuscular mycorrhizal fungi(AMF)in the root zone of Lycium barbarum L.,for laying a foundation in later applying AMF to control the root rot of L. barbarum L. The roots and soil samples of healthy and infected L. barbarum L. in three cultivation sites(Yinchuan and Zhongning county of Ningxia Hui Autonomous Region,and Jingyuan county of Gansu province)were collected. Wet sieve precipitation method and AMF colonization staining method were used to analyze the spore composition and density,mycorrhizal infection rate of AMF and the correlation between AMF diversity and soil physical and chemical factors. The results demonstrated that there was no significant difference in spore density,total mycorrhizal infection rate and T-GRSP content after the healthy L. barbarum L. plants were invaded by the pathogen of root rot,while the EE-GRSP content in Zhongning county significantly increased. The AMF community composition in the root zone soil of healthy and infected L. barbarum L. plants in different sites varied significantly(R 2=0.875,P=0.001). The dominant genus and species in Zhongning and Jingyuan county was changed,while that in Yinchuan site was unchanged. The root rot changed the soil AMF community structure in the root area of L. barbarum L. in Ningxia,such as the α-diversity increasing in Yinchuan,but no impact on the α-diversity in Zhongning and Jinghuan. There were significance among AMF spore density,species abundance,total mycorrhizal infection rate and soil physicochemical properties,and soil physicochemical properties did not affect the species diversity of AMF,but affected AMF colonization.

Key words: Lycium barbarum L., root rot, arbuscular mycorrhizal fungi, diversity