Mycoparasitism is an ancient life style of Trichoderma. (a) Position of Ta, Tv and Tr within the genus Hypocrea/Trichoderma. The positions of Tr, Tv and Ta are 4, 29 and 97, respectively - shown in bold), and a few hallmark species are given by their names. For the identities of the other species, see the gene accession numbers (Materials and methods). (b) Bayesian phylogram based on the analysis of amino acid sequences of 100 orthologous syntenic proteins (MCMC, 1 million generations, 10,449 characters) in Tr, Tv, Ta, Gibberella zeae and Chaetomium globosum. Circles above nodes indicate 100% posterior probabilities and significant bootstrap coefficients. The numbers in the boxes between (a) and (b) indicate the genome sizes and gene counts and percentage net gain regarding Ta. Photoplates show the mycoparasitic reaction after the contact between Trichoderma species and Rhizoctonia solani. Trichoderma species are always on the left side; dashed lines indicate the position of Trichoderma overgrowth of R. solani.