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Title: HYPOCREA FLAVOCONIDIA, A NEW SPECIES FROM COSTA RICA WITH YELLOW CONIDIA

Author
item DRUZHININA, IRINA - VIENNA, AUSTRIA
item CHAVERRI, PRISCILA - CORNELL UNIV, ITHACA, NY
item FALLAH, PAYAM - SAN DIEGO, CALIF
item KUBICEK, CHRISTIAN - VIENNA, AUSTRIA
item Samuels, Gary

Submitted to: Studies in Mycology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 9/20/2004
Publication Date: 12/12/2004
Citation: Druzhinina, I, P. Chaverri, P. Fallah, C. Kubicek, G.J. Samuels. 2004. Hypocrea flavoconidia, a new species from Costa Rica with yellow conidia. Studies in Mycology 50: 401-407.

Interpretive Summary: Fungi in the genus Hypocrea, often as their Trichoderma asexual states, are useful in the biological control of plant diseases. Development of effective biological methods to control diseases by this group of fungi is hindered by lack of accurate systematic knowledge. In this research a new species of Hypocrea with a Trichoderma asexual state was discovered in Costa Rica. This species is provided with a scientific name along with a description and illustrations of both states. It is compared with similar species of Hypocrea and Trichoderma based on molecular sequences. A key is provided to all species of Trichoderma having yellow conidia. Based on this research it is possible to accurately identify species of Hypocrea that have Trichoderma with yellow conidia. This research will be used by plant pathologists who are working to develop effective biological ways to control plant diseases.

Technical Abstract: The new species Hypocrea flavoconidia, and its Trichoderma anamorph is described based on collections from the Southern region of Costa Rica. This species is distinguished by yellow conidia, a character that is rare in Hypocrea/Trichoderma. The phylogenetic relationship of H. flavoconidia to other species of Hypocrea/Trichoderma is explored based on ITS 1 and 2 regions of rDNA, tef1 and ech42 gene genealogies. Phylogenetic analyses show that H. flavoconidia belongs in Trichoderma sect. Trichoderma, where it forms a sister group to a clade that includes T. hamatum and T. pubescens. A key to species of Hypocrea with known anamorphs with yellow conidia is presented.