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中国农学通报 ›› 2022, Vol. 38 ›› Issue (26): 118-123.doi: 10.11924/j.issn.1000-6850.casb2021-0849

所属专题: 生物技术

• 食品·营养·检测·安全 • 上一篇    下一篇

大兴安岭凋落物中可培养真菌分离、鉴定及活性筛选

司璐(), 吴彤, 甄锦程, 于洪佳, 刘瑶, 杨骁, 徐利剑()   

  1. 黑龙江大学现代农业与生态环境学院,哈尔滨 150080
  • 收稿日期:2021-09-02 修回日期:2021-11-13 出版日期:2022-09-15 发布日期:2022-09-09
  • 通讯作者: 徐利剑
  • 作者简介:司璐,女,1995年出生,河北承德人,硕士研究生,研究方向:植物保护。通信地址:150080 黑龙江省哈尔滨市南岗区学府路74号 黑龙江大学现代农业与生态环境学院,Tel:0451-86609487,E-mail: 1291974499@qq.com
  • 基金资助:
    国家自然科学基金“大兴安岭林下凋落物慢速生长产孢真菌的隐秘代谢物及其抗菌活性”(31870528);黑龙江大学研究生创新科研项目“特境真菌活性次级代谢产物研究”(YJSCX2021-217HLJU)

Isolation, Identification and Activity Screening of Culturable Fungi from Litter in the Greater Hinggan Mountains

SI Lu(), WU Tong, ZHEN Jincheng, YU Hongjia, LIU Yao, YANG Xiao, XU Lijian()   

  1. College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080
  • Received:2021-09-02 Revised:2021-11-13 Online:2022-09-15 Published:2022-09-09
  • Contact: XU Lijian

摘要:

本研究旨在森林凋落物中尝试分离与鉴定具有抗菌与抗氧化活性的真菌资源。以大兴安岭森林凋落物为材料,利用稀释涂布平板法分离凋落物真菌,通过内部转录间隔区序列(ITS)进行真菌鉴定,利用平板打孔药剂扩散法测试抗菌活性,通过TLC-DPPH法进行提取物的抗氧化活性测定。本研究共分离得到65株真菌,它们分别隶属于47个属,54个分类单元,其中有16株真菌的序列相似性≤98%。这16株真菌中有8株有抗细菌活性,有10株有抗真菌活性,有6株菌的粗提物有抗氧化活性。发现3株真菌同时具有抗菌、抗氧化活性,它们最相近菌属分别为PhaeosphaeriaCephalosporiumOphiobolus。大兴安岭真菌资源丰富,本研究为抗菌及抗氧化的真菌天然资源的开发,提供了基础数据与备选菌株。

关键词: 大兴安岭, 凋落物真菌, 抗菌活性, 抗氧化活性

Abstract:

The purpose of this study is to isolate fungi resources that have antibacterial and antioxidant activities from forest litter. The fungi were isolated from forest litter in the Greater Hinggan Mountains by a particle-spreading-plate method, identified by internal transcribed spacer sequence (ITS), tested by an agar-well-diffusion method for antibacterial activities, and determined by TLC-DPPH method for antioxidant activities. A total of 65 fungal strains are isolated, which belong to 47 genera and 54 taxa, and the sequence similarity of 16 strains is ≤ 98%. Among these 16 strains, the crude extracts of 8 strains have antibacterial activities, 10 strains have antifungal activities, and 6 strains have antioxidant activities. There are 3 strains that have antibacterial and antioxidant activities at the same time, and their closest genera are Phaeosphaeria, Cephalosporium and Ophiobolus, respectively. The Greater Hinggan Mountains are rich in fungi resources. This study can provide basic data and candidate strains for the development of antibacterial and antioxidant fungi natural resources.

Key words: the Greater Khingan Mountains, litter fungi, antibacterial activity, antioxidant activity

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