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Crinipellis brasiliensis, a new species based on morphological and molecular data

     Departamento de Biologia Celular, Universidade de Brasília, 70910-900, Brasília/DF, Brazil, Universidade do Estado de Mato Grosso, 78200-000, Cáceres/MT, Brazil

German F. Sepulveda Ch.

     Facultad de Agronomía, Universidad de Tarapacá, Casilla 6-D, Arica, Chile

Robert N.G. Miller

     Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília/DF, Brazil

Marisa A.S.V. Ferreira
Denise V.R. Santiago

     Departamento de Fitopatologia, Universidade de Brasília, 70910-900, Brasília/DF, Brazil

Mário Lúcio V. Resende

     Departamento de Fitopatologia, Universidade Federal de Lavras, Lavras/MG, Brazil

José Carmine Dianese

     Departamento de Fitopatologia, Universidade de Brasília, 70910-900, Brasília/DF, Brazil

Maria Sueli S. Felipe

     Departamento de Biologia Celular, Universidade de Brasília, 70910-900, Brasília/DF, Brazil

Crinipellis perniciosa infects a diversity of hosts causing severe damage to T. cacao production in many Brazilian growing regions. We compared isolates of Crinipellis from different geographic origins and hosts in Brazil by structural analysis using light (LM) and scanning electronic microscopy (SEM), as well as RFLP and sequence data based on the nuclear rDNA ITS region. Statistical analyses of morphometric data of basidia and basidiospores revealed a distinct group of isolates of Crinipellis obtained from Heteropterys acutifolia when compared to representatives from Theobroma cacao, Solanum lycocarpum and Heteropterys nervosa. A similar distinction also was observed based on sequence data of the ITS region such that combined results allowed for the segregation of a new species within the genus Crinipellis.

Key words: Crinipellis perniciosa, cocoa witches’ broom, internal transcribed spacer, phylogeny, ribosomal RNA genes, Theobroma cacao, tropical mycology

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