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Caracterization ans identification of Colletotrichum species associated to Paulinia cupana anthracnose

Grant number: 11/20999-7
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): February 01, 2012
Effective date (End): January 31, 2013
Field of knowledge:Agronomical Sciences - Agronomy - Plant Health
Principal researcher:Nelson Sidnei Massola Júnior
Grantee:Carolina de Cássia Pani Medeiros
Home Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil


Colletotrichum guaranicola is the causal agent of anthracnose on leaves and fruits of guarana (Paulinia cupana), an important crop in the brazilian agricultural business. Accurate species identification is critical to understand the epidemiology and to develop effective control of this disease. The conventional identification of Colletotrichum species is based on morphological characters, which are not highly reliable and make the identification problematic. Recent papers combine different methods in studies of Colletotrichum species, the so-called polyphasic approach, giving higher reliability to the characterization and identification. This project proposes to apply the polyphasic approach on Colletotrichum isolates from the guarana crop. Cultural, morphological, and molecular (PCR and sequencing) characterizations will be performed. Results will allow accurate definition of the etiology, showing whether the studied anthracnose is caused just by one or a complex of species. Understanding the etiology of this anthracnose will serve as input for the definition of more efficient control strategies.

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