大理大学学报 ›› 2021, Vol. 6 ›› Issue (12): 59-64.

• 生命科学 • 上一篇    下一篇

捕食线虫真菌在无菌土壤中的竞争与共存机制初探

  

  1. 1.大理大学东喜玛拉雅研究院,云南大理 671003;2.云南省中国三江并流区域生物多样性协同创新中心,云南大理 671003;3.大理大学三江并流区域生物多样性保护与利用省创新团队,云南大理 671003
  • 收稿日期:2021-03-22 出版日期:2021-12-15 发布日期:2022-01-14
  • 通讯作者: 佘容,高级工程师,博士,E-mail: sher@eastern-himalaya.cn。
  • 作者简介:刘李蕾,硕士研究生,主要从事微生物生态学研究。
  • 基金资助:
     国家自然科学基金项目(31360013;31760126;U1602262)

Preliminary Study on Competition and Synergistic Mechanisms of Nematode-Trapping Fungi in Sterile Soil

  1. 1. Institute of Eastern-Himalaya Biodiversity Research, Dali, Yunnan 671003, China;2. Collaborative Innovation Center for Biodiversity and Conservation in the Three Parallel Rivers Region of China, Dali, Yunnan 671003, China; 3. The Provincial Innovation Team of Biodiversity Conservation and Utility of the Three Parallel Rivers Region from Dali University, Dali, Yunnan 671003, China
  • Received:2021-03-22 Online:2021-12-15 Published:2022-01-14

摘要: 目的:了解微生物种间竞争与共存机制。方法:将Arthrobotrys属3种捕食线虫真菌以不同方式接种至无菌土壤中,每周进行检出率监测。结果:同时间点混合接种时,弯孢节丛孢(A. musiformis)检出率最高,且能协助其他2个种持续存在至实验末期;不同时间点混合接种时存在优先效应,其持续时长受种间协同作用的影响,奇妙单顶孢(A. thaumasium)的加入对少孢节丛孢(A. oligospora)有正向影响。结论:同属不同种捕食线虫真菌可以竞争性共存;物种的优先效应及协同作用影响着最终的群落结构。

关键词: 微生物, 生物多样性, 协同作用, 优先效应, 群落构建

Abstract:

Objective To gain insight into the competition and coexistence relationships among different microbiology species.Methods Three nematode-trapping fungi species from genus Arthrobotrys were inoculated into sterile soil by different patterns and the occurrence frequencies were assessed every week. ResultsThe occurrence frequencies of A. musiformis was the highest and it can assist the other two species to exist through the whole experiment period when three species were mixed inoculated at same time point. There was priority effect of mixed inoculation at different time points and its duration was affected by the interspecific synergy. In addition the inoculation of A. thaumasium had positive effects on the occurrence frequencies value of A. oligospora. ConclusionDifferent nematode-trapping fungi species from same genus can coexist competitively and the priority effects and synergistic effects affect the final community composition.

Key words:

"> microorganism, biodiversity, synergistic effects, priority effect, community assembly

中图分类号: