Establishment of Neurospora crassa as a model organism for fungal virology.

Establishment of Neurospora crassa as a model organism for fungal virology.
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DOI:
10.1038/s41467-020-19355-y
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发表时间:
2020-11-06
影响因子:
16.6
通讯作者:
Suzuki N
Suzuki N
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Honda S;Eusebio-Cope A;Miyashita S;Yokoyama A;Aulia A;Shahi S;Kondo H;Suzuki N

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丝状真菌粗糙脉孢菌被用作遗传学、发育生物学和分子生物学的模式生物。值得注意的是,尚不清楚它是否宿主或易受任何病毒感染。在这里,我们鉴定了粗糙脉孢菌和其他脉孢菌属物种中的多种RNA病毒,并表明粗糙脉孢菌支持这些病毒以及来自其他真菌的一些病毒的复制。可以通过实验将几种有衣壳的双链RNA病毒和无衣壳的正义单链RNA病毒引入粗糙脉孢菌原生质体或原生质球中。这使我们能够检查该生物体中的病毒复制和 RNAi 介导的抗病毒反应。我们发现病毒感染上调 RNAi 成分的转录,Dicer 蛋白(DCL-1、DCL-2)和 Argonaute(QDE-2)参与抑制病毒复制。因此,我们的研究将粗糙猪笼草建立为研究宿主-病毒相互作用的模型系统。真菌粗糙脉孢菌是研究各种生物过程的模式生物,但目前尚不清楚它是否被任何病毒感染。在这里,本田等人。鉴定感染粗糙脉孢菌的 RNA 病毒,并检查病毒复制和 RNAi 介导的抗病毒反应,从而将该真菌建立为研究宿主与病毒相互作用的模型。
The filamentous fungus Neurospora crassa is used as a model organism for genetics, developmental biology and molecular biology. Remarkably, it is not known to host or to be susceptible to infection with any viruses. Here, we identify diverse RNA viruses in N. crassa and other Neurospora species, and show that N. crassa supports the replication of these viruses as well as some viruses from other fungi. Several encapsidated double-stranded RNA viruses and capsid-less positive-sense single-stranded RNA viruses can be experimentally introduced into N. crassa protoplasts or spheroplasts. This allowed us to examine viral replication and RNAi-mediated antiviral responses in this organism. We show that viral infection upregulates the transcription of RNAi components, and that Dicer proteins (DCL-1, DCL-2) and an Argonaute (QDE-2) participate in suppression of viral replication. Our study thus establishes N. crassa as a model system for the study of host-virus interactions. The fungus Neurospora crassa is a model organism for the study of various biological processes, but it is not known to be infected by any viruses. Here, Honda et al. identify RNA viruses that infect N. crassa and examine viral replication and RNAi-mediated antiviral responses, thus establishing this fungus as a model for the study of host-virus interactions.
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