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Mycoviruses in Fusarium Species: An Update

Pengfei Li1, Pallab Bhattacharjee1, Shuangchao Wang1

  • 1State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.

Frontiers in Cellular and Infection Microbiology
|August 6, 2019
PubMed

Insights

Mycoviruses infecting Fusarium fungi are diverse and increasingly detected using RNA sequencing. Some mycoviruses cause hypovirulence, impacting plant health, while others establish latent infections, revealing complex virus-host interactions.

Area of Science:

  • Mycology
  • Virology
  • Plant Pathology

Background:

  • Fusarium fungi are globally significant plant pathogens.
  • Mycovirus diversity in Fusarium is rapidly expanding due to advanced RNA sequencing.
  • 13 Fusarium species are known hosts for fully-sequenced mycoviruses.

Purpose of the Study:

  • To review recent advancements in Fusarium mycovirus research.
  • To explore the diversity and molecular mechanisms of mycovirus-host interactions.
  • To discuss RNA silencing's role in antiviral defense against mycoviruses.

Main Methods:

  • RNA deep sequencing for mycovirus discovery.
  • Omics technologies for elucidating virus-host interactions.
  • Analysis of RNA silencing pathways.

Main Results:

  • A growing number of mycoviruses have been identified across various Fusarium species.
  • Most mycoviruses establish latent infections, but some induce hypovirulence.
  • RNA silencing pathways are crucial in the host's antiviral defense.

Conclusions:

  • Understanding Fusarium mycoviruses is critical for plant disease management.
  • Further research into mycovirus-host interactions and RNA silencing is warranted.
  • Advanced sequencing and omics technologies are key to future discoveries.
Keywords:
FusariumRNAi componenthypovirulencemycovirusmycovirus diversitymycovirus-host interactions

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