J4 ›› 2014, Vol. 13 ›› Issue (12): 56-59.

• 生命科学 • 上一篇    下一篇

云南高海拔牧场牦牛捕食线虫真菌生防高效菌株的筛选

  

  1. 大理学院农学与生物科学学院,云南大理671003
  • 收稿日期:2014-02-24 出版日期:2014-12-15 发布日期:2014-12-15
  • 作者简介:舒凡帆,助教,主要从事动物寄生虫学与寄生虫 病学研究.
  • 基金资助:

    国家自然科学基金资助项目(31060019;31100093);
    云南省教育厅重大专项资助项目(ZD2010010);
    云南省中青年学术带头人基金资助项目(2012HB-
    042);云南省高校滇西生物多样性科研创新团队
    项目(云教函〔2011〕93号);大理学院质量工
    程项目(TDI-05)

Screening of High-performance Biocontrol Strains of Nematode-trapping Fungi from Yak Dung in
Plateau Pastures of Yunnan Province

  1. College of Agriculture and Biology Science, Dali University, Dali, Yunnan 671003,China
  • Received:2014-02-24 Online:2014-12-15 Published:2014-12-15

摘要:

目的:为筛选云南高海拔牧场牦牛高效力的寄生线虫生防真菌菌株。方法:对云南大理花甸坝牧场,中甸打日坝牧场
及白马雪山牧场采集的少孢节丛孢(A. oligospora)、弯孢节丛孢(A. musiformis)、椭圆隔指孢(D. ellipsospora)和长孢隔指孢(D.
leptospora)采用盐酸胃蛋白酶处理筛选耐受菌株,并进一步比较了耐受菌株的捕食活力。结果:12株捕食线虫真菌中,有6株
通过盐酸胃蛋白酶处理,通过率为50%,其中大理花甸坝和中甸打日坝的A. oligospora 及白马雪山牧场的D. ellipsospora 显示出
较强的捕食活力。结论:本研究初步筛选出3株生防高效菌株,为牦牛及其它动物线虫病的生物防治积累了捕食线虫真菌菌
种资源。

关键词: 高海拔牧场, 牦牛, 捕食线虫真菌, 生物防治, 高效菌株

Abstract:

Objective: To screen high efficiency biocontrol strains of nematode-trapping fungi isolated from yak dung in plateau
pastures of Yunnan Province. Methods: Twelve nematode-trapping fungi of A. oligospora, A. musiformis, D. ellipsospora, D. leptospora
isolated from Dali Huadianba pasture, Zhongdian Dariba pasture, Baima Snow Mountain pasture were tested in pepsin-hydrochloric
acid and the nematode-trapping activity was determined subsequently. Results: Half of isolates survived in pepsin-hydrochloric acid
treatment and three isolates A. oligospora from Huadianba pasture and Dariba pasture and D. ellipsospora from Baima Snow Mountain
pasture displayed high nematode- trapping activity under laboratory conditions. Conclusion: Three high efficiency biocontrol
nematode-trapping fungi were obtained and this research accumulated biocontrol strain resources in the biological control of nematode
disease of yak and other animals.

Key words: plateau pastures, yak, nematode-trapping fungi, biological control, high efficiency fungi

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