湖北农业科学 ›› 2021, Vol. 60 ›› Issue (22): 69-71.doi: 10.14088/j.cnki.issn0439-8114.2021.22.015

• 植物保护 • 上一篇    下一篇

碳角属真菌Xylaria sp. NH1801中除草活性化合物研究

刘芳, 王月莹, 张志刚, 吴兆圆, 张亚妮, 方伟   

  1. 湖北省生物农药工程研究中心,武汉 430064
  • 收稿日期:2021-05-17 出版日期:2021-11-25 发布日期:2021-12-10
  • 通讯作者: 方伟,男,副研究员,主要从事微生物农药资源筛选研究,(电子信箱)wei.fang@nberc.com。
  • 作者简介:刘芳(1978-),女,湖北天门人,助理研究员,主要从事农药活性微生物资源研究,(电话)18086025680(电子信箱)24807004@qq.com。
  • 基金资助:
    湖北省农业科技创新中心项目(2019-620-000-001-27); 湖北省农业科学院青年基金项目(2020NKYJJ18)

Study on herbicidal compound from fungi Xylaria sp. NH1801

LIU Fang, WANG Yue-ying, ZHANG Zhi-gang, WU Zhao-yuan, ZHANG Ya-ni, FANG Wei   

  1. Hubei Biopesticide Engineering Research Center,Wuhan 430064,China
  • Received:2021-05-17 Online:2021-11-25 Published:2021-12-10

摘要: 在筛选具有除草活性资源时,得到1株具有显著除草活性的碳角菌属真菌Xylaria sp. NH1801,对其进行活性成分跟踪分离,得到1个细胞松弛素及其水解产物,鉴定其结构为19,20-环氧-细胞松弛素Q(1)和21-去乙酰化-19,20-环氧-细胞松弛素Q(2)。化合物1和化合物2在50 μg/mL时可以显著抑制稗草[Echinochloa crusgalli (L.) Beauv](抑制率分别为65.7%和60.7%)和反枝苋(Amaranthus retroflexus L.)种子萌发(抑制率分别为77.2%和75.4%),这是首次报道化合物1和化合物2对稗草和反枝苋种子具有抑制作用。

关键词: 碳角菌属, 除草活性, 细胞松弛素, 19, 20-环氧-细胞松弛素Q

Abstract: In the screening of resources with herbicidal activity, a fungus Xylaria sp.NH1801 with significant herbicidal activity was obtained. The active compound of Xylaria sp. NH 1801 were traced and isolated and two compounds were identified as 19,20-epoxy-cytochalasin Q(1) and 21-deacetylated-19,20-epoxy-cytochalasin Q(2). At 50 μg/mL, compounds 1 and 2 significantly inhibition toward the root elongation of Echinochloa crusgalli(inhibition rates were 65.7% and 60.7%, respectively) and Amaranthus retroflexus seeds (inhibition rates were 77.2% and 75.4%, respectively). This is the first report on the inhibitory effect of compounds 1 and 2 on Echinochloa crusgalli and Amaranthus retroflexus seeds.

Key words: Xylaria sp., herbicidal, cytochalasin, 19, 20-epoxy-cytochalasin

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