exoenzymes as a pathogenicity factor for Colletotrichum gloeosporioides associated with coffee plants

Cecilia Armesto, Fernanda Gonçalves Martins Maia, Fernando Pereira Monteiro, Mário Sobral de Abreu
2019 Summa Phytopathologica  
Phytopathogenic fungi during the penetration and colonization process are capable of secreting several enzymes, which enable infection of the host live tissue, acting on the degradation of wax, cuticle and cell walls. The ability of a pathogenic agent to produce enzymes or not can determine the severity degree of a disease. In this study, 33 isolates of Colletotrichum gloeosporioides related to anthracnose and blister spot on coffee trees were evaluated for their ability to produce hydrolytic
more » ... roduce hydrolytic enzymes (amylase, lipase, protease, laccase, pectinase and cellulase) and specific cell wall degrading enzymes "CWDEs" (polygalacturonase, polymethylgalacturonase and pectin-lyase), as well as their relationship with the pathogenicity/aggressiveness of isolates. For all isolates of C. gloeosporioides, extracellular enzymes could be detected, except cellulases. Isolates I-9 and I-24 produced the highest levels of extracellular enzymes, as well as CWDEs. They also had the highest disease intensity indexes, suggesting a relationship between enzymes and aggressiveness of the isolates.
doi:10.1590/0100-5405/191071 fatcat:r2vaef6z6ngtlaauazmiwts5iu