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Genetic diversity and pathogenicity of Fusarium species associated with fruit rot disease in banana across Peninsular Malaysia


Abd Murad, Nur Baiti and Mohamed Nor, Nik Mohd Izham and Shohaimi, Shamarina and Mohd Zainudin, Nur Ain Izzati (2017) Genetic diversity and pathogenicity of Fusarium species associated with fruit rot disease in banana across Peninsular Malaysia. Journal of Applied Microbiology, 123 (6). 1533 - 1546. ISSN 1364-5072; ESSN: 1365-2672

Abstract / Synopsis

The Malaysian giant prawn is among the most commonly cultured species of the genus Macrobrachium. Stocks of giant prawns from four rivers in Peninsular Malaysia have been used for aquaculture over the past 25 years, which has led to repeated harvesting, restocking, and transplantation between rivers. Consequently, a stock improvement program is now important to avoid the depletion of wild stocks and the loss of genetic diversity. However, the success of such an improvement program depends on our knowledge of the genetic variation of these base populations. The aim of the current study was to estimate genetic variation and differentiation of these riverine sources using novel expressed sequence tag-microsatellite (EST-SSR) markers, which not only are informative on genetic diversity but also provide information on immune and metabolic traits. Our findings indicated that the tested stocks have inbreeding depression due to a significant deficiency in heterozygotes, and FIS was estimated as 0.15538 to 0.31938. An F-statistics analysis suggested that the stocks are composed of one large panmictic population. Among the four locations, stocks from Johor, in the southern region of the peninsular, showed higher allelic and genetic diversity than the other stocks. To overcome inbreeding problems, the Johor population could be used as a base population in a stock improvement program by crossing to the other populations. The study demonstrated that EST-SSR markers can be incorporated in future marker assisted breeding to aid the proper management of the stocks by breeders and stakeholders in Malaysia.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number:
Publisher: The Society for Applied Microbiology
Keywords: Disease; Diversity; Genetic; Identification; Pathogenesis
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 07 Mar 2019 16:54
Last Modified: 07 Mar 2019 16:54
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