Random amplified microsatellites (RAMS) analysis ascertains genetic variation of Alternaria alternata causing black spot disease on Carya illinoinensis in South Africa.

ABSTRACT: Limited information regarding the occurrence of black spot disease of pecan (Carya illinoinensis), caused by A. alternata, in South Africa is known. The pecan industry is growing rapidly, so it is essential to understand the impact of the fungal pathogen to pecan health. In this study, the genetic variation of 364 A. alternata isolates was investigated by two RAMS primers (CCA₅ and CGA₅). In total, 6,525 alleles were produced, with a minimum of 3,182 alleles on the CGA₅ primer and maximum of 3,343 alleles for CCA₅ primer. Further analysis of the primers showed relatively low genetic diversity of A. alternata isolate populations, with mean values; (H = 0.12) and Shannon's information index (I = 0.20). The

SUBMITTER: Achilonu CC 

PROVIDER: S-EPMC10569608 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature