Centraalbureau voor Schimmelcultures, Fungal Biodiversity Centre, P.O. Box 85167, 3508 AD, Utrecht, The Netherlands.
Stud Mycol. 2006;55:163-73. doi: 10.3114/sim.55.1.163.
Angular leaf spot of Phaseolus vulgaris is a serious disease caused by Phaeoisariopsis griseola, in which two major gene pools occur, namely Andean and Middle-American. Sequence analysis of the SSU region of nrDNA revealed the genus Phaeoisariopsis to be indistinguishable from other hyphomycete anamorph genera associated with Mycosphaerella, namely Pseudocercospora and Stigmina. A new combination is therefore proposed in the genus Pseudocercospora, a name to be conserved over Phaeoisariopsis and Stigmina. Further comparisons by means of morphology, cultural characteristics, and DNA sequence analysis of the ITS, calmodulin, and actin gene regions delineated two groups within P. griseola, which are recognised as two formae, namely f. griseola and f. mesoamericana.
菜豆叶斑病是由 Phaeoisariopsis griseola 引起的一种严重疾病，其中存在两个主要的基因库，即安第斯和中美洲。nrDNA 的 SSU 区域的序列分析表明，Phaeoisariopsis 与其他与 Mycosphaerella 相关的丝状真菌无性型属，即 Pseudocercospora 和 Stigmina，无法区分。因此，在 Pseudocercospora 属中提出了一个新的组合，该名称将取代 Phaeoisariopsis 和 Stigmina。通过形态学、培养特性以及 ITS、钙调蛋白和肌动蛋白基因区域的 DNA 序列分析的进一步比较，在 P. griseola 中划分为两个组，被认为是两种形式，即 f. griseola 和 f. mesoamericana。
