Publication Date:
2024-04-04
Description:
The genus Fusarium includes numerous important plant and human pathogens, as well as many industrially and commercially important species. During our investigation of fungal diversity in China, a total of 356 fusarioid
isolates were obtained and identified from diverse diseased and healthy plants, or different environmental habitats,
i.e., air, carbonatite, compost, faeces, soil and water, representing hitherto one of the most intensive sampling and
identification efforts of fusarioid taxa in China. Combining morphology, multi-locus phylogeny and ecological preference, these isolates were identified as 72 species of Fusarium and allied genera, i.e., Bisifusarium (1), Fusarium
(60), and Neocosmospora (11). A seven-locus dataset, comprising the 5.8S nuclear ribosomal RNA gene with the
two flanking internal transcribed spacer (ITS) regions, the intergenic spacer region of the rDNA(IGS), partial translation elongation factor 1-alpha (tef1), partial calmodulin (cam), partial RNApolymerase largest subunit (rpb1), partial
RNA polymerase second largest subunit (rpb2) gene regions, and partial β-tubulin (tub2), were sequenced and
employed in phylogenetic analyses. A genus-level phylogenetic tree was constructed using combined tef1, rpb1,
and rpb2 sequences, which confirmed the presence of four fusarioid genera among the isolates studied. Further
phylogenetic analyses of two allied genera (Bisifusarium and Neocosmospora) and nine species complexes of
Fusarium were separately conducted employing different multi-locus datasets, to determine relationships among
closely related species. Twelve novel species were identified and described in this paper. The F. babinda species
complex is herein renamed as the F. falsibabinda species complex, including descriptions of new species. Sixteen
species were reported as new records from China.
Keywords:
Ecology
;
Evolution
;
Behavior and Systematics
;
Fusarium
;
multigene phylogeny
;
new taxa
;
species complex
;
systematics
Repository Name:
National Museum of Natural History, Netherlands
Type:
info:eu-repo/semantics/article
Format:
application/pdf
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