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Citation for Study 1603

About Citation title: "Species separation in Curvularia "geniculata" group inferred from Brn1 gene sequences".
About This study was previously identified under the legacy study ID S1550 (Status: Published).


Sun G., Oide S., Tanaka E., Shimizu K., Tanaka C., & Tsuda M. 2003. Species separation in Curvularia "geniculata" group inferred from Brn1 gene sequences. Mycoscience, 44: 239-244.


  • Sun G.
  • Oide S.
  • Tanaka E.
  • Shimizu K.
  • Tanaka C.
  • Tsuda M.


Brn1, a reductase gene involved in the melanin biosynthetic pathway, was adopted for species delimitation among members in the "geniculata" group of Curvularia species and proved to be useful for this purpose. Phylo- genetic trees of these fungal members were constructed from nucleotide sequences of this region. The so-called geniculata group of Curvularia was separated into several clusters. The conidial morphology of the members in each cluster is closely similar but clearly different among discrete clusters. The phylogenetic groups almost concurred with the morphological grouping. Thus, the synonymous treat- ment of Curvularia affinis, C. fallax, and C. senegalensis to C. geniculata in a previous study was supported. The iso- lates with warping hilum conidia were clearly different from C. geniculata and separated into two clusters. C. geniculata ATCC 6671 made an independent cluster situated near these clusters. The protuberant hilum species were located separately in the phylogenetic trees. For sound taxonomic treatment of these isolates, we should accumulate more information and retain our species determination for them.

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