Tuesday, June 27, 2017

[Fungi • 2017] Gymnosporangium przewalskii (Pucciniales, Basidiomycota) from China and Its Life Cycle


Gymnosporangium przewalskii  Y. M. Liang & B. Cao


Abstract

In an investigation of rust fungi in Qinghai Province, northwestern China, the novel rust species Gymnosporangium przewalskii was identified based on morphology and phylogenetic analyses. Phylogenetic analyses using the internal transcribed spacers (ITS) and the large subunit (LSU) rRNA partial gene revealed that G. przewalskii is monophyletic and distinct from other Gymnosporangium species. The life cycle of this new taxon was clarified based on molecular data. Its spermogonial and aecial stages occurred on Sorbus koehneana, and its telial stage was found on Juniperus przewalskii.

Keywords: phylogeny, rust, systematics, taxonomy, Fungi


 Gymnosporangium przewalskii on Juniperus przewalskii (holotype, BJFC-R01859). Telia emerge from the branches in saffron yellow gelatinous form under moist conditions.

Gymnosporangium przewalskii Y. M. Liang and B. Cao, sp. nov. 

Etymology:— The epithet “przewalskii”, referring to the telial host “Juniperus przewalskii”.

 Hosts:— 0, I on Sorbus koehneana C. K. Schneider; III on Juniperus przewalskii.
 Distribution:— China (Qinghai and Sichuan Prov.).


Bin Cao, Fu-Zhong Han, Cheng-Ming Tian and Ying-Mei Liang. 2017. Gymnosporangium przewalskii sp. nov. (Pucciniales, Basidiomycota) from China and Its Life Cycle.  Phytotaxa. 311(1); 67–76.  DOI:  10.11646/phytotaxa.311.1.6

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