四类食用菌中RNA病毒的检测和种类分析
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作者单位:

广东省微生物信号与作物病害重点实验室/华南农业大学植物保护学院

基金项目:

国家香蕉产业技术体系建设专项(CARS-31-09)


Detection and Species Analysis of RNA Mycoviruses in Four Types of Edible Mushrooms
Author:
Affiliation:

Guangdong Province Key Laboratory of Microbial Signals and Disease Control / College of Plant Protection,South China Agricultural University

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    摘要:

    为明确生产中不同食用菌中的病毒种类,为防控食用菌病毒病提供参考,本文采用高通量测序技术,对53株侧耳属(Pleurotus spp.)和10株灵芝属(Ganoderma spp.),以及17株金针菇(Flammulina filiformis)和12株鸡腿菇(Coprinus comatus)的菌株中的真菌病毒进行了检测,对新发现的可能新病毒进行了PCR扩增和序列分析,在序列比较的基础上进行了系统发育树分析。结果显示:在92个四类食用菌菌株的高通量测序结果中,经BLASTx序列比对分析,共有51条contigs可注释为41种病毒,通过RT-PCR扩增和序列分析,共鉴定到13种可能的新病毒,包括在侧耳属菌株中发现7种,在鸡腿菇中发现3种,在金针菇中发现1种、以及在灵芝属菌株中发现2种。这些病毒分属于+ssRNA病毒、-ssRNA病毒和dsRNA病毒,分布在8个病毒科,包括Barnaviridae、Botuoviridae、Deltaflexiviridae、Mymonaviridae、Partitiviridae、Phenuiviridae、Phlegiviridae和一个未分类的Bunyavirales病毒。研究结果表明:四类食用菌中存在较为丰富的真菌病毒,其中在鸡腿菇和灵芝属菌株中首次发现其携带真菌病毒,这些新病毒的发现为进一步研究和防控食用菌病毒病害提供一定的参考。

    Abstract:

    Clarifying the types of viruses in different edible mushrooms during production is the foundation for preventing and controlling fungal virus disease in edible mushrooms. High throughput sequencing technology was used to detect fungal viruses in 53 strains of Pleurotus spp., 10 strains of Ganoderma spp., 17 strains of Flammulina filiformis, and 12 strains of Coprinus comatus. PCR amplification and sequence analysis were performed on newly discovered potential new viruses, and phylogenetic tree analyses were conducted based on sequence comparison. BLASTx sequence alignment results showed that a total of 51 contigs were annotated as 41 viruses detected from 92 strains of four types of edible mushrooms. A total of 13 possible novel viruses were identified through RT-PCR amplification and sequence analysis, including 7 species found in Pleurotus spp., 3 species in Coprinus comatus, 1 species in Flammulina filiformis, and 2 species in Ganoderma spp.. These viruses belong to the +ssRNA viruses, -ssRNA viruses, and dsRNA viruses, and are distributed in 8 viral families, including Barnaviridae, Botuoviridae, Deltaflexiviridae, Mymonaviridae, Partiviridae, Phenuiviridae、Phlegiviridae, and an unclassified member of the order Bunyavirales. In conclusion, there are relatively abundant fungal viruses in the four types of edible mushrooms, among which fungal virus was first discovered in Coprinus comatus and Ganoderma spp.. The discovery of these novel viruses provides a certain reference for further research, prevention, and control of edible mushroom viral diseases.

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  • 收稿日期:2023-11-25
  • 最后修改日期:2024-02-02
  • 录用日期:2025-02-27
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