diversity associated with the interaction in Ethiopia.

production is seriously threatened by the root parasitic weeds (RPWs) and in sub-Saharan Africa. Research has shown that control depends on eliminating its seed reserves in soil. Several species of the genus ( ), which have been isolated from diseased plants have proven to be highly pathogenic to all developmental stages of these RPWs. In the present study 439 isolates of spp. were found associated with soils from growing fields, rhizosphere, or as endophytes with roots and seeds, or as endophytes of stems and seeds. Based on multi-locus phylogenies of combinations of , , and alignments, and morphological characteristics, 42 species were identified, including three species that are newly described, namely and from soils, and from seed of Using a previously published AFLP-derived marker that is specific to detect isolates of , an effective soil-borne biocontrol agent against , we also detected the gene in several other species. As these isolates were all associated with the pathosystem, the possibility of horizontal gene transfer among these fusaria will be of interest to further investigate in future. Lombard L, van Doorn R, Groenewald JZ, Tessema T, Kuramae EE, Etolo DW, Raaijmakers JM, Crous PW (2022). diversity associated with the interaction in Ethiopia. : 177-215. doi: 10.3114/fuse.2022.10.08.