Colletotrichum species causing anthracnose on lima bean in Brazil

The taxonomy of the genus Colletotrichum has undergone various changes. These alterations arise from the use of modern molecular tools. Currently, Colletotrichum species are grouped into complexes. Species of Colletotrichum associated with diseases in lima bean have been investigated very little. In...

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Published in:Tropical plant pathology 2018-02, Vol.43 (1), p.78-84
Main Authors: Sousa, Enayra Silva, Silva, Janaíne Rossane Araújo, Assunção, Iraildes Pereira, de Melo, Maruzanete Pereira, Feijó, Frederico Monteiro, da Silva Matos, Kedma, de Andrade Lima, Gaus Silvestre, Beserra, José Evando Aguiar
Format: Article
Language:English
Subjects:
Actin
Anthracnose
Biomedical and Life Sciences
Colletotrichum truncatum
Conidia
Conservation
Glyceraldehyde-3-phosphate dehydrogenase
Life Sciences
Morphology
Pathogenicity
Pathogens
Phylogeny
Physical characteristics
Plant Pathology
Seedlings
Short Communication
Species
Stress relaxation
Taxonomy
Tubulin
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Summary:The taxonomy of the genus Colletotrichum has undergone various changes. These alterations arise from the use of modern molecular tools. Currently, Colletotrichum species are grouped into complexes. Species of Colletotrichum associated with diseases in lima bean have been investigated very little. In Brazil, anthracnose in lima bean has often been associated with Colletotrichum truncatum, but only morphological characteristics have been used for identification purposes. In this study, samples of lima bean with symptoms of spots on the leaves and pods have been collected in Piauí and Alagoas states. Comparisons of morphological characteristics revealed nine isolates with cylindrical or curved conidia. The ITS region and partial sequences of GAPDH, β-tubulin and Actin regions were amplified by PCR, sequenced and submitted to multilocus phylogenetic analysis. The isolates analyzed grouped with reference specimens from Colletotrichum truncatum , C . cliviae and C . fructicola . All isolates were pathogenic to 25-day-old lima bean seedlings. Therefore, this work confirms the pathogenicity of C. truncatum to lima bean and for the first time records the occurrence of C. cliviae and C. fructicola as pathogens of this host in Brazil.
ISSN:1983-2052
1982-5676
1983-2052
DOI:10.1007/s40858-017-0182-0