Elucidation of intragenomic variation of ribosomal DNA sequences in the enigmatic fungal genus Ceraceosorus, including a newly described species Ceraceosorus americanus.

ABSTRACT: Multicopy nuclear ribosomal DNA (rDNA) genes have been used as markers for fungal identification for three decades. The rDNA sequences in a genome are thought to be homogeneous due to concerted evolution. However, intragenomic variation of rDNA sequences has recently been observed in many fungi, which may make fungal identification and species abundance estimation based on these loci problematic. Ceraceosorus is an enigmatic genus in the smut lineage Ustilaginomycotina for which very limited distribution data exist. Our previous research demonstrated intragenomic variation in the internal transcribed spacer (ITS1-5.8S-ITS2) region of two Ceraceosorus species. In this study, we described the fourth known species of Ceraceosorus, C. americanus, isolated from an asymptomatic rosemary leaf col

SUBMITTER: Kijpornyongpan T 

PROVIDER: S-EPMC11687029 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature