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Title: PHYLOGENETIC ANALYSIS OF TRICHODERMA STROMATICUM, A MYCOPARASITE OF CRINIPELLIS PERNICIOSA, THE CAUSE OF WITCHES¿ BROOM DISEASE OF CACAO

Author
item DE SOUZA, J - UNIV OF MD,WYE RES&ED
item REHNER, S - IBL, USDA, BELTSVILLE,MD
item Samuels, Gary
item POMELLA, A - ALMIRANTE CACAU, BRAZIL
item HEBBAR, P - MARS,INC, HACKENSACK NJ

Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: 5/15/2004
Publication Date: 6/1/2004
Citation: De Souza, J.T., Rehner, S.A., Samuels, G.J., Pomella, A.W., Hebbar, P.K. Phylogenetic analysis of trichoderma stromaticum, a mycoparasite of crinipellis perniciosa, the cause of witches¿ broom disease of cacao. Phytopathology.Vol.94(6)p.S25,2004.

Interpretive Summary:

Technical Abstract: Cocoa production in Central and South America is severely limited by the basidiomycete Crinipellis perniciosa, which causes the disease known as witches' broom. In Brazil, a commercial formulation of T. stromaticum, a co-evolved mycoparasite of C. perniciosa, is being used in the field to manage this disease. DNA fingerprinting and physiological studies have demonstrated that there are two genetically distinct groups in T. stromaticum, one of which is more effective for biological control of C. perniciosa. We present further evidence, based on multilocus phylogenetic analyses of seven nuclear loci, that T. stromaticum in Bahia State, Brazil is partitioned into two discrete phylogenetic groups.