Elucidating the interactions between the rust Hemileia vastatrix and a Calonectria mycoparasite and the coffee plant.

ABSTRACT: Calonectria hemileiae, a fungus associated with pustules of the coffee leaf rust (CLR, Hemileia vastatrix) in Brazil, was tested in vitro and in planta to assess its biocontrol potential. The fungus inhibited the germination of rust spores by over 80%. CLR severity was reduced by 93% when Calonectria was applied to coffee leaf discs inoculated with H. vastatrix, whilst a reduction of 70-90% was obtained for in planta experiments. Mycoparasitism was demonstrated through the fulfillment of Koch's postulates. Elucidation of the biochemical interaction between Calonectria and Hemileia on coffee plants indicated that the mycoparasite was able to increase plant resistance to rust infection. Coffee plants sprayed with Calonectria</

SUBMITTER: Salcedo-Sarmiento S 

PROVIDER: S-EPMC8044427 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature