Molecular Re-identification of Strains of the Colletotrichum acutatum Species Complex Deposited in the NIAS Genebank and Morphological Characteristics of its Member Species

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
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Recently, nine phylogenetic groups were proposed for a plurivorous fungus, Colletotrichum acutatum by some researchers. Some of them were named as C. simmondsii, C. fioriniae, C. acutatum sensu stricto and C. carthami based on morphology and phylogenetic analyses of β-tubulin-2 gene partial sequences. We re-identified 170 strains deposited as C. acutatum in the NIAS Genebank, Japan based on phylogenetic analysis with the β-tubulin-2 gene sequences. Eighty strains with reddish colony colors and relatively uniform conidia belonged to C. fioriniae, 37 with a grayish to yellowish color and short conidia to C. simmondsii, 25 with a blackish to cream color and short conidia to C. carthami, 12 with a cream to pale orange color and narrow conidia to ‘C. acutatum group A2-P’ newly designated in this paper, 5 with a brownish to orange color and larger conidia to C. acutatum group A4, and 11 to other species of Colletotrichum. No strain of C. acutatum s. str. was found. A dichotomous key to the member species and groups was designated based on reverse colony color and conidial morphology. Because pathogenic strains of 18 host plants were re-identified, updating of pathogen names was proposed. Ten of them should be changed to C. fioriniae, and the pathogens of each five host plants such as strawberry and apple should be replaced with 2 to 3 species or the group. Sweet pepper pathogen was tentatively classified into C. acutatum group A2-P.

刊行年月日
作成者 SATO Toyozo MORIWAKI Jouji MISAWA Tomoo
著者キーワード

β-tubulin-2 gene

colony color

conidial morphology

dichotomous key

phylogenetic analysis

公開者 Japan International Research Center for Agricultural Sciences
オンライン掲載日
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
47
3
開始ページ 295
終了ページ 305
DOI 10.6090/jarq.47.295
権利 Japan International Research Center for Agricultural Sciences
言語 eng

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