Botrytis cinerea Mycovirome Diversity
In Botrytis cinerea, more than 100 distinct mycovirus species have been identified to date, including viruses that induce hypovirulence worldwide.
Geographical Distribution of Botrytis cinerea Mycovirome
Collections of B. cinerea isolates from multiple continents includding South America (Colombia, Chile), North America (Canada), Asia (China, Israel, Pakistan, Russia), Europe (France, Italy, United Kingdom, Spain), and Oceania (Australia, New Zealand) have reported mycoviruses.
Geographical distribution of B. cinerea mycoviruses worldwide. (Source: MycoVirome database, Browse; accessed 2026-03-18.)
Mycovirome Based on Genome Configuration
Here we are quantifying prevalence as the number of coexisting cases (viral sequences reported) infecting Botrytis cinerea:
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Family-Level Diversity and Genome-Type Composition of the B. cinerea Mycovirome
Bars represent the number of reported mycovirus species. Colors indicate genome type (ssRNA(+), ssRNA(−), dsRNA, ssDNA).
The mycovirome of Botrytis cinerea shows high genetic and taxonomic diversity. It includes viruses with positive-sense single-stranded RNA (+ssRNA), double-stranded RNA (dsRNA), negative-sense single-stranded RNA (−ssRNA), and single-stranded DNA (ssDNA) genomes.
Among the viruses that have been sequenced, +ssRNA viruses form the largest and most diverse group. These viruses belong to many different families, including:
Alphaflexiviridae, Botourmiaviridae, Deltaflexiviridae, Flexiviridae, Fusariviridae, Gammaflexiviridae, Hypoviridae, Mitoviridae, Mycoalphaviridae, Narnaviridae, Orfanplasmoviridae, Splipalmiviridae, Togaviridae, Tombusviridae, and Tymoviridae.
The dsRNA viruses are mainly classified within the families Birnaviridae, Botybirnaviridae, Curvulaviridae, Endornaviridae, Fusagraviridae, Partitiviridae, Pseudototiviridae, Quadriviridae, and Totiviridae.
Negative-sense RNA (−ssRNA) viruses found in Botrytis belong to the families Mymonaviridae and Peribunyaviridae, which are part of the order Bunyavirales.
In contrast, the ssDNA viruses identified so far are classified within the family Genomoviridae.
Spatiotemporal Patterns in Genome-Type Composition of the B. cinerea Mycovirome
Percentages represent the proportion of reported mycovirus species per country and year based on available sequence records.