Research Topic: mycovirus

A novel partitivirus confers dual contradictory effects to its host fungus: growth attenuation and virulence enhancement

mycolabadmin

Researchers discovered a new virus that infects a fungus causing disease in tea plants. Interestingly, this virus has opposing effects: it slows down the fungus’s growth but makes it more damaging to tea leaves. This unusual combination of effects provides new insights into how viruses interact with fungal pathogens and could inform new strategies for managing tea plant diseases.

Read More »

Aspergillus fumigatus dsRNA virus promotes fungal fitness and pathogenicity in the mammalian host

mycolabadmin

Researchers discovered that a virus infecting the dangerous fungus Aspergillus fumigatus actually helps the fungus survive and cause worse infections in humans. By removing the virus from fungal strains, scientists found that the fungus became weaker and less able to cause disease in mice. Importantly, treating infected mice with an antiviral drug (ribavirin) reduced the viral load and helped the mice survive, suggesting a new approach to treating serious fungal infections.

Read More »

A mycovirus enhances fitness of an insect pathogenic fungus and potentially modulates virulence through interactions between viral and host proteins

mycolabadmin

Scientists discovered a virus that infects a beneficial fungus used to control insect pests. Instead of harming the fungus, this virus makes it much better at its job by doubling spore production, helping it survive harsh conditions like UV radiation and heat, and making it more deadly to target insects. The improvement comes from specific interactions between viral and fungal proteins that work together to enhance the fungus’s natural pest-killing abilities.

Read More »

Aspergillus fumigatus dsRNA virus promotes fungal fitness and pathogenicity in the mammalian host

mycolabadmin

A virus that infects the fungus Aspergillus fumigatus (which causes serious lung infections in humans) actually makes the fungus more dangerous by improving its ability to survive stress and spread disease. Scientists found that removing this virus from the fungus made infections less severe in mice. They also discovered that antiviral drugs like ribavirin could potentially be used to weaken these virus-infected fungi and improve patient survival.

Read More »

Changes in intra-host mycovirus population diversity after vertical and horizontal transmission

mycolabadmin

Researchers studied how a virus that helps control chestnut blight disease changes when it spreads between fungal cells. They found that when the virus passes through spores, it becomes less diverse, but when it spreads between fungal cells, diversity is maintained better. The fungal host’s genetics strongly influences how many viral variants survive transmission, which has important implications for using this virus as a disease control strategy.

Read More »

New insights into temperature-impacted mycovirus-fungus interactions regulated by a microRNA in Lentinula edodes

mycolabadmin

When shiitake mushrooms are infected with a virus and exposed to heat stress, the virus replicates more aggressively, which makes the mushrooms more susceptible to heat damage and competitive fungi. Researchers discovered that a small regulatory RNA molecule called led-milR-21 plays a key role in this process by suppressing the mushroom’s heat defense mechanisms when the virus is present. This discovery is important because it shows how viruses can exploit heat stress to overcome fungal defenses, with implications for mushroom cultivation in a warming climate.

Read More »

A novel mitovirus associated with the fungal entomopathogen Zoophthora radicans

mycolabadmin

Researchers used advanced sequencing techniques to study viruses in wild pea aphids and discovered a new virus that infects a fungus that naturally kills aphids. By analyzing genetic material from field-collected aphids, they identified this virus is specifically associated with the fungus Zoophthora radicans. This discovery helps us better understand the hidden microbial world of natural insect populations and could potentially be useful for developing natural pest control methods.

Read More »
Scroll to Top