Taxonomy of the Golovinomyces cynoglossi Complex (Erysiphales, Ascomycota) Disentangled by Phylogenetic Analyses and Reassessments of Morphological Traits

被引:15
作者
Braun, Uwe [1 ]
Bradshaw, Michael [2 ]
Zhao, Ting-Ting [3 ]
Cho, Sung-Eun [3 ]
Shin, Hyeon-Dong [3 ]
机构
[1] Martin Luther Univ Halle Wittenberg, Inst Biol, Bereich Geobot & Bot Garten, Halle, Saale, Germany
[2] Univ Washington, Sch Environm & Forest Sci, Seattle, WA 98195 USA
[3] Korea Univ, Coll Life Sci & Biotechnol, Div Environm Sci & Ecol Engn, Seoul, South Korea
基金
新加坡国家研究基金会;
关键词
Boraginaceae; co-evolution; Erysiphaceae; Golovinomyces asperifolii; Golovinomyces asperifoliorum; rDNA ITS; POWDERY MILDEWS ERYSIPHALES;
D O I
10.1080/12298093.2018.1509512
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The name Golovinomyces cynoglossi s. lat. is traditionally applied to a complex of morphologically similar powdery mildews on hosts of the plant family Boraginaceae. The current species-level taxonomy within this complex is ambiguous due to the lack of phylogenetic examinations. The present study applied phylogenetic methods to clarify the taxonomy of G. cynoglossi s. lat. Phylogenetic analysis of rDNA ITS sequences retrieved from Asian, European and North American specimens revealed that G. cynoglossi s. lat. collections from different hosts involved several species in five clearly separated lineages. Clade I consists primarily of Golovinomyces cynoglossi s. str. on Cynoglossum. Clade III consists of Golovinomyces sequences retrieved from the host genera Symphytum and Pulmonaria. The taxa within clade III are now assigned to G. asperifoliorum comb. nov. Clade V encompasses G. cynoglossi s. lat. on the host genera Bothriospermum, Buglossoides, Echium, Myosotis, and Trigonotis. The taxa within clade V are now assigned to G. asperifolii comb. nov. The species concerned in this study were lecto- and epitypified to stabilize their nomenclature.
引用
收藏
页码:192 / 204
页数:13
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