Gymnosporangium species on Malus : species delineation, diversity and host alternation

Show simple item record Zhao, p. Qi, X.H. Crous, Pedro W. Duan, W.J. Cai, L. 2021-07-20T14:30:53Z 2021-07-20T14:30:53Z 2020-01-10
dc.description.abstract Gymnosporangium species (Pucciniaceae, Pucciniales, Basidiomycota) are the causal agents of cedarapple rust diseases, which can lead to significant economic losses to apple cultivars. Currently, the genus contains 17 described species that alternate between spermogonial/aecial stages on Malus species and telial stages on Juniperus or Chamaecyparis species, although these have yet to receive a modern systematic treatment. Furthermore, prior studies have shown that Gymnosporangium does not belong to the Pucciniaceae sensu stricto (s.str.), nor is it allied to any currently defined rust family. In this study we examine the phylogenetic placement of the genus Gymnosporangium. We also delineate interspecific boundaries of the Gymnosporangium species on Malus based on phylogenies inferred from concatenated data of rDNA SSU, ITS and LSU and the holomorphic morphology of the entire life cycle. Based on these results, we propose a new family, Gymnosporangiaceae, to accommodate the genus Gymnosporangium, and recognize 22 Gymnosporangium species parasitic on Malus species, of which G. lachrymiforme, G. shennongjiaense, G. spinulosum, G. tiankengense and G. kanas are new. Typification of G. asiaticum, G. fenzelianum, G. juniperi-virginianae, G. libocedri, G. nelsonii, G. nidus-avis and G. yamadae are proposed to stabilize the use of names. Morphological and molecular data from type materials of 14 Gymnosporangium species are provided. Finally, morphological characteristics, host alternation and geographical distribution data are provided for each Gymnosporangium species on Malus. en_ZA
dc.description.department Biochemistry en_ZA
dc.description.department Forestry and Agricultural Biotechnology Institute (FABI) en_ZA
dc.description.department Genetics en_ZA
dc.description.department Microbiology and Plant Pathology en_ZA
dc.description.librarian am2021 en_ZA
dc.description.sponsorship National Nature Science Foundation of China, the China National Funds for Distinguished Young Scholars, the Biological Resources Programme, Chinese Academy of Sciences and the Project for Fundamental Research on Science and Technology, Ministry of Science and Technology of China. en_ZA
dc.description.uri en_ZA
dc.description.uri en_ZA
dc.identifier.citation Zhao, P., Qi, X.H., Crous, P.W. et al. 2020, 'Gymnosporangium species on Malus: species delineation, diversity and host alternation', Persoonia, vol. 45, pp. 68-100. en_ZA
dc.identifier.issn 0031-5850 (print)
dc.identifier.issn 1878-9080 (online)
dc.identifier.other 10.3767/persoonia.2020.45.03
dc.language.iso en en_ZA
dc.publisher Naturalis Biodiversity Center and Centraalbureau voor Schimmelcultures en_ZA
dc.rights © 2020 Naturalis Biodiversity Center & Westerdijk Fungal Biodiversity Institute. This is an Open Access article distributed under the terms of the Creative Commons Attribution License. en_ZA
dc.subject Apple rust en_ZA
dc.subject Host alternation en_ZA
dc.subject New taxa en_ZA
dc.subject Species delimitation en_ZA
dc.title Gymnosporangium species on Malus : species delineation, diversity and host alternation en_ZA
dc.type Article en_ZA

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