ArticlePloS one2014
The transcription factor Ste12 mediates the regulatory role of the Tmk1 MAP kinase in mycoparasitism and vegetative hyphal fusion in the filamentous fungus Trichoderma atroviride.
Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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32 citing papers in PubMed, 57 citations in OpenAlex.
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- Re-routing MAP kinase signaling for penetration peg formation in predator yeasts.PLoS pathogens · 2024Article
- The transcription factor STE12 influences growth on several carbon sources and production of dehydroacetic acid (DHAA) in Trichoderma reesei.Scientific reports · 2024Article
- The histone deacetylase Hda1 affects oxidative and osmotic stress response as well as mycoparasitic activity and secondary metabolite biosynthesis inMicrobiology spectrum · 2024Article
- Mycoparasitism related targets of Tmk1 indicate stimulating regulatory functions of this MAP kinase in Trichoderma atroviride.Scientific reports · 2023Article
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- A dialogue-like cell communication mechanism is conserved in filamentous ascomycete fungi and mediates interspecies interactions.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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- Network Analysis Reveals Different Cellulose Degradation Strategies AcrossFrontiers in genetics · 2022Article
- Regulation of biotic interactions and responses to abiotic stresses by MAP kinase pathways in plant pathogenic fungi.Stress biology · 2021Review
- Stress-Activated Protein Kinase Signalling Regulates Mycoparasitic Hyphal-Hyphal Interactions inJournal of fungi (Basel, Switzerland) · 2021Article
- The GPI-Anchored GH76 Protein Dfg5 Affects Hyphal Morphology and Osmoregulation in the MycoparasiteFrontiers in microbiology · 2021Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
Mycoparasitic species of the fungal genus Trichoderma are potent antagonists able to combat plant pathogenic fungi by direct parasitism. An essential step in this mycoparasitic fungus-fungus interaction is the detection of the fungal host followed by activation of molecular weapons in the mycoparasite by host-derived signals. The Trichoderma atroviride MAP kinase Tmk1, a homolog of yeast Fus3/Kss1, plays an essential role in regulating the mycoparasitic host attack, aerial hyphae formation and conidiation. However, the transcription factors acting downstream of Tmk1 are hitherto unknown. Here we analyzed the functions of the T. atroviride Ste12 transcription factor whose orthologue in yeast is targeted by the Fus3 and Kss1 MAP kinases. Deletion of the ste12 gene in T. atroviride not only resulted in reduced mycoparasitic overgrowth and lysis of host fungi but also led to loss of hyphal avoidance in the colony periphery and a severe reduction in conidial anastomosis tube formation and vegetative hyphal fusion events. The transcription of several orthologues of Neurospora crassa hyphal fusion genes was reduced upon ste12 deletion; however, the Δste12 mutant showed enhanced expression of mycoparasitism-relevant chitinolytic and proteolytic enzymes and of the cell wall integrity MAP kinase Tmk2. Based on the comparative analyses of Δste12 and Δtmk1 mutants, an essential role of the Ste12 transcriptional regulator in mediating outcomes of the Tmk1 MAPK pathway such as regulation of the mycoparasitic activity, hyphal fusion and carbon source-dependent vegetative growth is suggested. Aerial hyphae formation and conidiation, in contrast, were found to be independent of Ste12.
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