Genetic Diversity of Fusarium oxysporum f. sp. cubense in East and Central Africa

• DOI: 10.1094/pdis-02-17-0282-re
• Publication Date: 2017-10-10T13:01:09Z
• Authors: Patrick Karangwa; Diane Mostert; Privat Ndayihanza...; Thomas Dubois; Björn Niere; Alexandra zum Felde; Alexander Schouten; Guy Blomme; Fenton Beed; Altus Viljoen
• Keywords: Lineage (genetic)

Banana Fusarium wilt is a major production constraint globally and significant threat to the livelihoods of millions people in East Central Africa (ECA). A proper understanding diversity population dynamics causal agent, oxysporum f. sp. cubense (Foc), could be useful for development sustainable disease management strategies pathogen. The current study investigated Foc ECA using vegetative compatibility group (VCG) analysis, PCR-RFLPs ribosomal DNA’s intergenic spacer region, as well phylogenetic analysis elongation factor-1α gene. Six VCGs (0124, 0125, 0128, 01212, 01220, 01222), which all belong one lineage (Foc VI), were widely distributed throughout region. 0128 01220 are reported first time Burundi, Democratic Republic Congo (DRC), Rwanda, Tanzania, Uganda, while VCG 01212 DRC Rwanda. Isolates that did not any known identified VI members by may represent novel VCGs. CAV 2734, banana pathogen collected clustered with nonpathogenic F. isolates VIII. Results from this will contribute significantly toward implementation practices such restricted movement infected planting material selective resistant varieties.