期刊
MYCOLOGIA
卷 115, 期 1, 页码 16-31出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00275514.2022.2119761
关键词
CaM; genealogical concordance phylogenetic species recognition (GCPSR); morphology; RPB1; RPB2; sporodochial conidia; TEF1; 4 new taxa
类别
In this study, DNA sequencing was used to identify and characterize 290 Fusarium strains isolated from root-colonizing endophytic fungi in northern Kazakhstan. A total of 16 different Fusarium species were identified, including eight known species, four novel species, and a phylogenetically divergent lineage F. steppicola. New species were described based on molecular phylogenetic and morphological analyses.
In this study, DNA sequence data were used to characterize 290 Fusarium strains isolated during a survey of root-colonizing endophytic fungi of agricultural and nonagricultural plants in northern Kazakhstan. The Fusarium collection was screened for species identity using partial translation elongation factor 1-alpha (TEF1) gene sequences. Altogether, 16 different Fusarium species were identified, including eight known and four novel species, as well as the discovery of the phylogenetically divergent F. steppicola lineage. Isolates of the four putatively novel fusaria were further analyzed phylogenetically with a multilocus data set comprising partial sequences of TEF1, RNA polymerase II largest (RPB1) and second-largest (RPB2) subunits, and calmodulin (CaM) to assess their genealogical exclusivity. Based on the molecular phylogenetic and comprehensive morphological analyses, four new species are formally described herein: F. campestre, F. kazakhstanicum, F. rhizicola, and F. steppicola.
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