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中国农学通报 ›› 2021, Vol. 37 ›› Issue (23): 38-44.doi: 10.11924/j.issn.1000-6850.casb2020-0501

所属专题: 生物技术

• 生物科学 • 上一篇    下一篇

艾纳香内生真菌抗细菌和炭疽菌的活性研究

元超1(), 舒雪纯2, 张影波1, 王凯1, 谢小丽1, 徐子琪3(), 袁媛4()   

  1. 1中国热带农业科学院热带作物品种资源研究所/海南省艾纳香工程技术研究中心,海南儋州 571737
    2海南大学林学院,海口 570228
    3山东第一医科大学第一附属医院,济南 250014
    4广东药科大学生命科学与生物制药学院,广州 510006
  • 收稿日期:2020-09-25 修回日期:2021-01-18 出版日期:2021-08-15 发布日期:2021-08-26
  • 通讯作者: 徐子琪,袁媛
  • 作者简介:元超,男,1979年出生,山东威海人,副研究员,博士,研究方向:植物内生真菌次生代谢产物。通信地址:571737 海南省儋州市宝岛新村,Tel:0898-23300370,E-mail: yuanchao79@126.com
  • 基金资助:
    海南省自然科学基金项目“刺盾炱菌Chaetothyriales sp.中新骨架嗜氮酮类化合物的发掘及抗真菌活性”(220RC718);中国热带农业科学院基本科研业务费专项资金“基于微环境互作的艾纳香内生真菌次生代谢产物研究”(1630032019045)

Antibacterial and Anti-anthracnose Activities of Endophytic Fungi Colonized in Blumea balsamifera (L.) DC.

Yuan Chao1(), Shu Xuechun2, Zhang Yingbo1, Wang Kai1, Xie Xiaoli1, Xu Ziqi3(), Yuan Yuan4()   

  1. 1Tropical Crops Genetic Resources Institute, CATAS/Hainan Engineering Research Center for Blumea balsamifera, Danzhou Hainan 571737
    2College of Forestry, Hainan University, Haikou 570228
    3The First Affiliated Hospital of Shandong First Medical University, Jinan 250014
    4School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006
  • Received:2020-09-25 Revised:2021-01-18 Online:2021-08-15 Published:2021-08-26
  • Contact: Xu Ziqi,Yuan Yuan

摘要:

为获得丰富的艾纳香内生真菌资源,筛选出抗性生防菌株,用于活性次生代谢产物的发现,通过水琼脂法对海南产艾纳香进行内生真菌分离,通过ITS序列分析,对其进行鉴定和分析。采用滤纸片法评价内生真菌发酵产物对细菌的抑制活性,采用平板对峙培养法评价艾纳香内生真菌对植物炭疽菌的拮抗作用。本研究共分离鉴定出191株内生真菌,分属于27属,45种,其中优势菌属为DiaportheParaphomaEctophomaPenicilliumTalaromycesHypoxylonPhomopsisColletotrichumFusarium。抗细菌活性结果显示,ClonostachysFusariumDiapothe属活性较强。抗炭疽病菌试验显示,TalaromycesEctophomaPenicillium属活性较强。本研究初步探讨了海南产艾纳香内生真菌种类的多样性,并首次对其进行了抗病原菌活性筛查,获得的活性菌株可作为微生物源菌剂开发的重要材料。

关键词: 艾纳香, 内生真菌, 抗菌活性, 抗炭疽菌活性, 微生物菌剂

Abstract:

To obtain abundant endophytic fungi from Blumea balsamifera (L.) DC., and select bio-control strains for discovery of bioactive metabolites, water-agar method was used to isolate endophytic fungi from Blumea balsamifera (L.) DC distributed in Hainan Island. ITS analysis was adopted for identification and analysis of endophytic fungi. Furthermore, the activities of fermented endophytes culture extract against four strains of bacteria were tested by filtering paper method. Plate confrontation was carried out to evaluate the inhibitory effects of endophytes on four strains of anthracnose. As a result, 191 strains were isolated and identified, which belonged to 27 genuses, 45 species, the dominant genuses included Diaporthe, Paraphoma, Ectophoma, Penicillium, Talaromyces, Hypoxylon, Phomopsis, Colletotrichum and Fusarium. Clonostachys, Fusarium and Diapothe were more active in antibacterial assay. Anti-anthracnose results showed that the endophyts belonged to Talaromyces, Ectophoma and Penicillium toughly inhibited four strains of anthracnose. In conclusion, our research preliminary discussed the category variety of endophytic fungi derived from Blumea balsamifera collected in Hainan Island, bioactivity-guided screening was carried out firstly, and the selected active endophytic fungi may serve as candidates for founding new agronomic agents.

Key words: Blumea balsamifera (L.) DC., endophytic fungi, antimicrobial activity, anti-anthracnose activity, microbial agent

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