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Species diversity, taxonomy, and phylogeny of Gymnosporangium in China
Mycologia ( IF 2.8 ) Pub Date : 2020-09-02 , DOI: 10.1080/00275514.2020.1790272
Si-Qi Tao 1 , Bin Cao 2 , Makoto Kakishima 1, 3 , Ying-Mei Liang 4
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ABSTRACT Gymnosporangium is a group of plant fungal pathogens that cause rust diseases on many economically important fruit trees. Most Gymnosporangium are heteroecious and demicyclic, producing four morphologically diverse spore stages on two taxonomically unrelated host plants, the Cupressaceae and Rosaceae. The complex life cycle and heteroecism make it difficult to investigate the species within Gymnosporangium. To determine the taxonomy, phylogeny, and species diversity of Gymnosporangium in China, a large collection of 672 specimens were analyzed using a combination of morphological observations and phylogenetic analyses. In total, 27 Gymnosporangium species from China are documented here, including 22 known species, one new combination, one new record, and three new species. The study also documents a novel aeciospore surface structure with an irregular surface that is described here as “surfy.”
更新日期:2020-09-02
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