Fusarium Sections Elegans and Liseola: Taxonomy, rDNA Internal Transcribed Spacer Sequences and Diagnostics
The genus Fusarium harbours important plant pathogens and mycotoxin producers. One of the economically most important species is F. oxysporum, that comprises over one hundred formae speciales as well as saprophytic and antagonistic strains. F. oxysporum belongs to section Elegans, together with F. redolens. The questionable morphological distinction between the latter two species has been the subject of many studies [1, 3, 4, 7, 11]. Sequence analysis of part of the 28S ribosomal RNA gene indicates that Elegans is most closely related to Liseola . The section Liseola comprises many mycotoxin-producing species such as F. fujikuroi, F. proliferatum, F. sacchari, F. subglutinans and F. verticillioides. The distinction between section Liseola, without chlamydospores, and Elegans, with chlamydospores, is increasingly questioned and a new section, Dlaminia, has even been proposed to accommodate species such as F. dlaminii that combine characteristics of both sections .
KeywordsInternal Transcribe Spacer Fusarium Oxysporum Fusarium Species Internal Transcribe Space Sequence Vegetative Compatibility
Unable to display preview. Download preview PDF.
- 2.Baayen, R.P., Van Dreven, F., Krijger, M.C., and Waalwijk, C. (1997) Revision of the classification of races and vegetative compatibility groups in Fusarium oxysporum f.sp. dianthi and F. redolens f.sp. dianthi. Eur. J. Plant Pathol. 103, submitted.Google Scholar
- 3.Booth, C. (1971) The genus Fusarium Commonwealth Mycological Institute, Kew, U.K.Google Scholar
- 4.Gerlach, W. and Nirenberg, H.I. (1982) The genus Fusarium - a pictorial atlas. Mitt. Biol. Bundesanst. Land.- Forstw. Berlin-Dahlem 209, 1–406.Google Scholar
- 6.Kwasna, H., Chelkowski, J., and Zajkowski, P. (1991)Grzyby (Mycota), torn XXII. Sierpik (Fusarium), Polska Akademia Nauk., Flora Polska, Warszawa-Kraköw, Poland.Google Scholar
- 7.Nelson, P.E., Toussoun, T.A., and Marasas, W.F.O. (1983)Fusarium species. An illustrated manual for identification Pennsylvania State University Press, University Park, PA, USA.Google Scholar
- 8.Waalwijk, C. and Baayen, R.P. (1995) Identification of races of Fusarium oxysporum f.sp. dianthi by DNA fingerprinting and vegetative compatibility. Bull. O.E.P.P. 25, 117–124.Google Scholar
- 9.Waalwijk, C., Baayen, R.P., De Koning, J.R.A., and Gams, W. (1996) Ribosomal DNA analyses challenge the status of Fusarium sections Elegans and Liseola. Sydowia 48, 90–104.Google Scholar
- 11.Wollenweber, H.W. and Reinking, O.A. (1935)Die Fusarien, ihre Beschreibung, Schadwirkung und Bekämpfung Paul Parey, Berlin, Germany.Google Scholar