Skip navigation

Genetic analysis of Mycosphaerella fijiensis in the Ugandan Lake Victoria region reveals a homogenous population

Genetic analysis of Mycosphaerella fijiensis in the Ugandan Lake Victoria region reveals a homogenous population

Fahleson, J., Nakyanzi, M., Okori, P., Seal, S., Kenyon, L. and Dixelius, C. (2009) Genetic analysis of Mycosphaerella fijiensis in the Ugandan Lake Victoria region reveals a homogenous population. Plant Pathology, 58 (5). pp. 888-897. ISSN 1365-3059 (online) (doi:10.1111/j.1365-3059.2009.02099.x)

Full text not available from this repository.

Abstract

A collection of Mycosphaerella fijiensis, in total 71 isolates from 11 countries, of which 54 isolates were derived from the Ugandan Lake Victoria region, were analysed with regard to molecular markers and benomyl resistance to characterize the population structure. Forty-seven alleles from seven restriction fragment length polymorphism (PCR-RFLP) and five microsatellite markers were scored and utilized in the study. Using analysis of molecular variance (AMOVA), no significant genetic differentiation could be found between isolates from different leaves compared to isolates from a single leaf (P = 0.07). Exact tests of the allelic frequencies revealed no differences between isolates from different districts or between single-leaf-derived isolates compared to isolates derived from different leaves (P > 0.05 in all cases except two, which, however, were shown to be of type-I error). Resistance to benomyl, analysed both by PCR and fungicide screening, revealed that all isolates were susceptible. Compiled information from the various datasets implied that the Ugandan M. fijiensis population in the Lake Victoria Basin constitutes a homogenous population, probably as the result of a recent founder event.

Item Type: Article
Uncontrolled Keywords: AMOVA, benomyl resistance, black Sigatoka, genetic variability, Musa spp., β-tubulin gene sequence
Subjects: S Agriculture > S Agriculture (General)
Faculty / Department / Research Group: Faculty of Engineering & Science > Natural Resources Institute
Faculty of Engineering & Science > Natural Resources Institute > Agriculture, Health & Environment Department
Related URLs:
Last Modified: 07 Mar 2012 12:17
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/3377

Actions (login required)

View Item View Item