Taxonomy and phylogenetic position of Phragmidium altaicum, a newly described rust fungus on Rosa, based on molecular and morphological data
Yun LiuThe Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, ChinaYoshitaka OnoFaculty of Education, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512 JapanMakoto KakishimaThe Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8572, JapanYusufjon GafforovLaboratory of Mycology, Institute of Botany, Academy of Sciences of the Republic of Uzbekistan, 232 Durmon Yuli Street, Tashkent 100125, UzbekistanYing‐Mei LiangMuseum of Beijing Forestry University, Beijing Forestry University, Beijing 100083, China
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Phragmidium altaicum, a new causal fungus of a rose rust disease, is described and illustrated. The species, collected in Xinjiang Province, northwestern China, is well distinguished by its morphology and rDNA LSU and ITS sequences from the other Phragmidium species on Rosa. The new rust species is characterized primarily by 4–7-celled teliospores, bearing robust verrucae on the surface, aeciospore-surface structure of ‘Echinulate type 4,’ and urediniospore surface completely covered with echinulae with inapparent mushroom-shaped base. The sequence analysis showed that this species is closely allied to P. tuberculatum, but they differ in their morphological characteristics.
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