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ARS Home » Midwest Area » St. Paul, Minnesota » Cereal Disease Lab » Research » Publications at this Location » Publication #124764
Title: A WEB-BASED RESOURCE FOR INFORMATION ON VEGETATIVE COMPATIBILITY GROUPS OF FUSARIUM OXYSPORUM

Author
item KATAN, TALMA - VOLCANI CTR, ISRAEL
item Kistler, Harold

Submitted to: Fungal Genetics Newsletter
Publication Type: Abstract Only
Publication Acceptance Date: 9/1/2001
Publication Date: 9/1/2001
Citation: KATAN, T., KISTLER, H.C. A WEB-BASED RESOURCE FOR INFORMATION ON VEGETATIVE COMPATIBILITY GROUPS OF FUSARIUM OXYSPORUM. FUNGAL GENETICS NEWSLETTER. 2001. Abstract. v. 48 p. S111.

Interpretive Summary:

Technical Abstract: Fusarium oxysporum is a ubiquitous soilborne species that includes saprophytes as well as important plant pathogens. Information on vegetative compatibility (the ability of closely related strains to form heterokaryons in laboratory tests) has been used to study and catagorize genetic diversity in this fungus. As a species, F. oxysporum affects over 100 host species, but individual strains are highly host specific. Strains also hav been categorized by host specificity into groups known as formae speciales. A vegetative compatibility group (VCG) usually includes only strains from a single forma specialis whereas formae speciales may be comprised of one or more VCG. The correspondence of VCG with host specificity has been useful in assigning strains to host specificity and in estimating the diversity of strains causing disease on a particular host. A numbering system has been established in which formae speciales and VCGs have been assigned numerical lcodes. Each code number is composed of a 3-digit forma specialis code and 1-2 digit serial number for individual VCGs within a forma specialis. To date 48 formae speciales have been subjected to VCG analysis and the number of VCGs in a forma specialis ranged from 1 to 24, averaging four VCGs per forma specialis. A web site has been established that compiles information on VCGs of Fusarium oxysporum and can be accessed at www.cdl.umn.edu/scab/vcg.html. Formae speciales are tabulated by their numerical codes, host plants and the VCGs identified for them. A comprehensive list of 193 references is also included.