Endophytes from blueberry roots and their antifungal activity and plant growth enhancement effects
文献类型： 外文期刊
作者： Song, Xiaohe 1 ; Li, Yankai 1 ; Hu, Yong 2 ; Guo, Weidong 3 ; Wu, Zirui 1 ; Zhang, Yao 1 ; Cao, Zhe 4 ;
作者机构： 1.Anqing Normal Univ, Coll Life Sci, Res Ctr Aquat Organism Conservat & Water Ecosyst, Prov Key Lab Biodivers Res & Ecol Protect Southwe, Anqing 246133, Peoples R China
2.Anhui Acad Agr Sci, Agr Prod Proc Inst, Hefei 230031, Peoples R China
3.Zhejiang Normal Univ, Coll Chem & Life Sci, Jinhua 311300, Zhejiang, Peoples R China
4.Ningxia Univ, Sch Agr, Yinchuan 750021, Ningxia, Peoples R China
关键词： Root endophyte; DSE; Blueberry; Pezicula sp
期刊名称：RHIZOSPHERE （ 影响因子：3.129； ）
ISSN：
年卷期： 2021 年 20 卷
页码：
收录情况： SCI
摘要： Root endophytic fungi that live with plants in a mutualistic fashion could be promising biological agents to improve biotic resistance and plant growth. In this study, 71 endophytic fungi isolates were obtained from blueberry roots, and they were grouped into 2 phyla, 6 classes, 8 orders, and 16 genera based on characterization of morphological features and variances of ITS1, ITS2, and 5.8s nrDNA sequences. Diaporthe and Fusarium were the most abundant genera. Among them, 16 strains exhibited various levels of antagonicstic abilities against five blueberry pathogens including Botrytis cinerea, Phomopsis sp., Botryosphaeria dothidea, Pestalotiopsis sp., and Fusarium oxysporum. The isolate FLR13, which was classified as Pezicula sp., exhibited the strongest level of antifungal effect (>60%) against these five pathogens and displayed potential biological control effect against Botrytis cinerea in blueberry seedlings. In addition, FLR13 could form typical microsclerotia of dark septate endophyte (DSE) in blueberry root cells to evidently enhance blueberry growth, resulting in the significant increases of 24.13% in height, 88.10% in leaf size, 43.32% in stem diameter, and 54.19% in fresh plant weight as compared with non-FLR13 colonized seedlings. Those results suggest that FLR13 should have potential application in disease control and plant growth enhancement.
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