Dear Aqleem!

Myxoviruses are some groups of RNA-containing viruses that are associated with various diseases in animals and humans. The orthomyxoviruses cause diseases of the respiratory tract, most notably influenza. The related paramyxoviruses include the respiratory syncytial virus (RSV) and the agents causing measles, mumps, and parainfluenza. Virions of myxoviruses are spherical and consist of nucleoid and the outer shell.

You asked about plants. Please, study some articles in the attachment .

Vladimir

Dear Sir,  My question was about mycoviruses

Ok! No problem! Recent progress in the study of mycoviruses has comprehensively improved our understanding of the properties of mycoviruses and has strengthened our confidence to explore hypovirulence-associated mycoviruses that control crop diseases. There are suggested strategies for resolving this problem. That's why I thought you made a mistake in the transcription of the name of the virus. So I gave information about lesser-known role of Myxoviruses  in plant diseases.

From the other point the discovery of an ssDNA mycovirus enhances the potential of exploring fungal viruses as valuable tools for molecular manipulation of fungi and for plant disease control and expands our knowledge of global virus ecology and evolution. So, Myxoviruses can be dangerous for the fungus and plants (articles in the attachment).

Dear  Abbas,

Relevance to your work, please find the attached document.

Hi Abbas

Mycoviruses is effected on fungi by change the virulence of fungal pathogen, and maybe used as biocontrol agents against some plant fungal pathogens

Dear Aqleem Abbas

Mycoviruses are viruses that infect fungi. Mycoviruses are transmitted intercellularly only through cell division, sporulation, and cell fusion (Anastomosis). The genome of most mycoviruses consists of dsRNA, while the genome of about 30% of them is composed of a positive, single-stranded RNA (+ssRNA). Recently, a geminivirus-related DNA Mycovirus has been reported as Mycovirus. Todays, more than 10 families of viruses have been reported as mycovirus in Fungi. Mycoviruses have been reported from various phyla of fungi, including the Chytridiomycota, Zygomycota, Ascomycota, Deuteromycota, and Basidiomycota. In fact, Mycoviruses can effect on fungi by change the virulence, sporulation, growth and colony characteristics of fungal pathogen, therefore we can use them as biocontrol agents against some plant fungal pathogens. For more information you can see bellow papers:

1-Son M, Yu J, Kim K-H (2015) Five Questions about Mycoviruses. PLoS Pathog 11(11): e1005172. doi:10.1371/journal.ppat.1005172.

2-Herrero N, Dueñas E, Quesada-Moraga E, Zabalgogeazcoa I (2012) Prevalence and diversity of viruses in the entomopathogenic fungus Beauveria bassiana. Appl Environ Microbiol 78: 8523–8530. doi: 10.1128/AEM.01954-12. pmid:23001673.

3-Kwon S-J, Lim W-S, Park S-H, Park M-R (2007) Molecular characterization of a dsRNA mycovirus, Fusarium graminearum virus-DK21, which is phylogenetically related to hypoviruses but has a genome organization and gene expression strategy resembling those of plant potex-like viruses. Mol Cell 23: 304–315.

4-Xie J, Jiang D (2014) New Insights into mycoviruses and exploration for the biological control of crop fungal diseases. Annu Rev Phytopathol 52: 45–68. doi: 10.1146/annurev-phyto-102313-050222. pmid:25001452.

5- Nuss, D. L. 2011. Mycoviruses, RNA Silencing, and Viral RNA Recombination. Adv Virus Res. 80: 25–48. doi:10.1016/B978-0-12-385987-7.00002-6.

6-Pearson MN, Beever RE, Boine B, Arthur K. 2009. Mycoviruses of filamentous fungi and their relevance to plant pathology. Mol Plant Pathol. 2009 Jan;10(1):115-28. doi: 10.1111/j.1364-3703.2008.00503.x.

Mycoviruses enhance or reduce the virulence, by regulating the pathogenesis genes

Fungal viruses or mycoviruses that infecting fungi can be used as biocontrol agents against many of the economically pathogenic fungi, thus the usage of fungicides can be reduced. The viruses have been detected in all the major phyla of fungi including Chytridimycota, Ascomycota, Deuteromycota and Basidiomycota. For the management of plant diseases, the importance of viruses arise because they could reduce virulence of their host. Technically, the reduced virulence is called hypovirulence. This hypovirulence phenomena has increase importance of mycoviruses because it has the potential to reduce the crop losses caused by their hosts which are plant pathogenic fungi.

Kindly see the following RG links.

Article Hypovirulence of Mycoviruses as a Tool for Biotechnological ...

Article A COMPREHENSIVE REVIEW ON MYCOVIRUSES AS BIOLOGICAL CONTROL AGENT

Article Mycoviruses and their role in biological control of plant diseases

Article The use of mycoviruses in the control of forest diseases

Article Mycoviruses: An Introduction to Potential Biocontrol Agents

Mycoviruses enhance / diminish the virulence of fungal host