Caracterização morfocultural e molecular de espécies de colletotrichum associados a Spigelia anthelmia L. nos estados de Alagoas E Sergipe

Abstract

ABSTRACT

Weeds or invasive plants are plants of spontaneous growth that compete with cultivated plants for space, light and nutrients, being able to be sources of inoculum and act as alternative hosts of phytopathogens. One of the main phytopathogens for crops of economic importance are the fungi of the genus Colletotrichum. One of the main diseases caused by Colletotrichum species is anthracnose, which affects productivity in several crops, such as banana, strawberry and citrus, in addition to losses in the crop field. The diversity and identification of Colletotrichum species in weeds in Northeast Brazil is poorly studied compared to cultivated plants. Therefore, the objective of this work was to identify, through phylogenetic analysis by the APN2/MATIGS region (ApMat), to characterize and evaluate the pathogenicity of Colletotrichum spp. associated with Spigelia anthelmia with symptoms of anthracnose in Northeast Brazil. Five species were identified (C. fragarie, C. fructicola, C. queenslandicum, C. tropicale and C. siamense), all belonging to the C. gloeosporioides complex. All species were pathogenic to the original host.

Keywords: Anthracnose, Etiology, Alternative host.