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Journal of Clinical Microbiology, Jan 1995, 85-89, Vol 33, No. 1
KF LoBuglio and JW Taylor
The phylogenetic position of the human pathogenic fungus Penicillium
marneffei was assessed from the nucleotide sequences of the nuclear and
mitochondrial ribosomal DNA regions. Phylogenetic analysis determined that
P. marneffei is closely related to species of Penicillium subgenus
Biverticillium and sexual Talaromyces species with asexual biverticillate
Penicillium states. Knowledge of the phylogenetic position of P. marneffei
facilitated the design of unique oligonucleotide primers, from the nuclear
ribosomal DNA internal transcribed spacer region, for the specific
amplification of P. marneffei DNA. These primers were successful at
selectively amplifying DNA from six isolates of P. marneffei and excluding
the other species tested, which included Penicillium subgenus
Biverticillium and Talaromyces species and several well-known fungal
pathogens, namely, Aspergillus fumigatus, Coccidioides immitis, Histoplasma
capsulatum, and Pneumocystis carinii. The primers that we have developed
for the specific amplification of P. marneffei have the potential to be
incorporated in a PCR identification system which could be used for the
identification of this pathogenic agent from clinical material.
Copyright © 1995 by the American Society for Microbiology. All rights reserved.
Phylogeny and PCR identification of the human pathogenic fungus Penicillium marneffei
Department of Plant Biology, University of California, Berkeley 94720.
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