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Citation for Study 563

About Citation title: "A taxonomic revision of Metarhizium based on a phylogenetic analysis of ribosomal DNA sequence data.".
About This study was previously identified under the legacy study ID S386 (Status: Published).


Driver F., Milner R., & Trueman J. 2000. A taxonomic revision of Metarhizium based on a phylogenetic analysis of ribosomal DNA sequence data. Molecular Ecology, 104 (2): 134-150.


  • Driver F.
  • Milner R.
  • Trueman J.


The taxonomy of Metarhizium has been reassessed based on sequence data and RAPD patterns from 123 isolates recognised as M. anisopliae, M. flavoviride or M. album. A high level of genetic diversity was found which was best resolved at the species/variety level by sequence data from the ITS and 28s rDNA D3 regions. RAPD patterns correlated closely with the sequence data and revealed a much greater degree of diversity useful for distinguishing strains within a variety. Ten distinct clades were revealed by the cladogram based on the combined sequence data set. Several major evolutionary lines were revealed, however the taxonomic relationships at the base of the tree are poorly resolved. The data support the monophyly of the M. anisopliae group, and recognise 4 clades within this group. Two of these correspond with M. anisopliae var. anisopliae and M. anisopliae var. majus. The other two are described as new varieties based on their distinctive ITS sequence data: M. anisopliae var. lepidiotum Driver & Milner and M. anisopliae var. acridum Driver & Milner. M. album, M. flavoviride var. flavoviride and M. flavoviride var. minus are recognised and redefined according to ITS sequence data. Three clades represent new varieties, two of which have been named M. flavoviride var. novazealandicum Driver & Milner and M. flavoviride var. pemphigum Driver & Milner based on their distinct ITS sequence data. A third clade contains only 2 disparate isolates and so has not been named pending further data on other similar isolates. A list of representative isolates is provided to be used as standards or type material so that unknown isolates can be assigned to the correct clade.

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