Competitive Exclusion of Flavescence doree Phytoplasma Strains in <i>Catharanthus roseus</i> Plants.

ABSTRACT: Flavescence dorée phytoplasmas (FDp, 16SrV-C and -D) are plant pathogenic non-cultivable bacteria associated with a severe grapevine disease. The incidence of the two reference strains on cultivated grapevines is unbalanced, and mixed infections are rare. To investigate the interaction between the two strains, Catharanthus roseus plants were graft-infected with both strains, either simultaneously or sequentially. Different combinations of lateral and apical grafting were applied to avoid possible benefits due to graft position. The infection was monitored for four months through a new diagnostic protocol developed for differentiation and relative quantification of the two strains. Regardless of the temporal or spatial advantage at grafting, FD-C generally outcompeted FD-D. The preva

SUBMITTER: Rossi M 

PROVIDER: S-EPMC7698599 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature