Image Credit: David B. Langston, University of Georgia, from Bugwood.org used under a Creative Commons Attribution 3.0 License.
Fungi of the Fusarium oxysporum species complex (FOSC)
are ubiquitous soil and plant inhabiting microbes. As plant
pathogens, FOSC strains can cause wilt and root rot diseases on
over 120 plant species (Michielse and Rep, 2009). Many FOSC strains
can infect plant roots without apparent effect or can even protect
plants from subsequent infection (Alabouvette et al., 2009). FOSC
isolates also have been identified as human pathogens causing
localized or disseminated infections that may become
life-threatening in neutropenic individuals (O'Donnell et al.,
2004).
The first genome made available in 2007 was from a tomato wilt
strain FOL 4287 (NRRL 34936) which was used for comparative
analysis with the genomes of F. graminearum and F.
verticillioides. Results of this comparison led to the
discovery of mobile supernumerary chromosomes in this strain of
F. oxysporum f. sp. lycopersici (race 2 - VCG 0030)
containing genes required for host specific infection and disease
(Ma et al., 2010).
References :
- Alabouvette,C., Olivain,C., Migheli,Q., and Steinberg,C. (2009) Microbiological control of soil-borne phytopathogenic fungi with special emphasis on wilt-inducing Fusarium oxysporum. New Phytologist 184: 529-544.
- Ma,L.J., van der Does,H.C., Borkovich,K.A., Coleman,J.J., Daboussi,M.J., Di Pietro,A. et al. (2010) Comparative genomics reveals mobile pathogenicity chromosomes in Fusarium. Nature 464: 367-373.
- O'Donnell,K., Sutton,D.A., Rinaldi,M.G., Magnon,K.C., Cox,P.A., Revankar,S.G. et al. (2004) Genetic diversity of human pathogenic members of the Fusarium oxysporum complex inferred from multilocus DNA sequence data and amplified fragment length polymorphism analyses: Evidence for the recent dispersion of a geographically widespread clonal lineage and nosocomial origin. Journal of Clinical Microbiology 42: 5109-5120.
