AUTHOR=Li Pengfei , Bhattacharjee Pallab , Wang Shuangchao , Zhang Lihang , Ahmed Irfan , Guo Lihua 

TITLE=Mycoviruses in Fusarium Species: An Update

JOURNAL=Frontiers in Cellular and Infection Microbiology

VOLUME=9

YEAR=2019

URL=https://www.frontiersin.org/journals/cellular-and-infection-microbiology/articles/10.3389/fcimb.2019.00257

DOI=10.3389/fcimb.2019.00257

ISSN=2235-2988

ABSTRACT=<p><italic>Fusarium</italic> is an important genus of plant pathogenic fungi, and is widely distributed in soil and associated with plants worldwide. The diversity of mycoviruses in <italic>Fusarium</italic> is increasing continuously due to the development and extensive use of state-of-the-art RNA deep sequencing techniques. To date, fully-sequenced mycoviruses have been reported in 13 <italic>Fusarium</italic> species: <italic>Fusarium asiaticum, F. boothii, F. circinatum, F. coeruleum, F. globosum, F. graminearum, F. incarnatum, F. langsethiae, F. oxysporum, F. poae, F. pseudograminearum, F. solani</italic>, and <italic>F. virguliforme</italic>. Most <italic>Fusarium</italic> mycoviruses establish latent infections, but some mycoviruses such as Fusarium graminearum virus 1 (FgV1), Fusarium graminearum virus-ch9 (FgV-ch9), Fusarium graminearum hypovirus 2 (FgHV2), and <italic>Fusarium oxysporum</italic> f. sp. dianthi mycovirus 1 (FodV1) cause hypovirulence. Rapid advances in various omics technologies used to elucidate genes or biological processes can facilitate an improved understanding of mycovirus-host interactions. The review aims to illuminate the recent advances in studies of mycoviruses in <italic>Fusarium</italic>, including those related to diversity, molecular mechanisms of virus-host interaction. We also discuss the induction and suppression of RNA silencing including the role of RNAi components as an antiviral defense response.</p>