PDF(Pubmed)
Abstract：
Between 2020 and 2023, rust fungus specimens were collected from the primary forested regions of the Sanjiangyuan area in Qinghai Province, resulting in over 300 samples. A taxonomic and phylogenetic study of the rust fungi from these forests was conducted using morphological and molecular biological techniques. The investigation identified rust fungi from 7 families, 12 genera, 56 species and varieties, including 10 new host records, 1 new record for China, and 2 novel species. The host plants involved belonged to 26 families, 48 genera, and 78 species. Pucciniaceae and Coleosporiaceae were the dominant families, with the genera Puccinia, Melampsora, and Gymnosporangium being prevalent. The rust fungi in the Sanjiangyuan forests showed a biogeographical affinity with the North Temperate Zone. Floristic comparisons revealed a higher similarity with rust fungi from Inner Mongolia, Gansu, and Tibet and a lower similarity with those from Hainan. An analysis of the life forms of rust fungus host plants indicated that herbaceous plants were the most common, followed by shrubs and trees. In different regions of Sanjiangyuan, rust fungi were found as follows: Golog Prefecture with 6 families, 9 genera, and 28 species; Yushu Prefecture with 5 families, 8 genera, and 31 species; Huangnan Prefecture with 5 families, 9 genera, and 26 species; and Hainan Prefecture with 4 families, 5 genera, and 10 species. The families Pucciniaceae, Melampsoraceae, and Coleosporiaceae were common across all four regions. Moreover, the families Rosaceae, Asteraceae, Ranunculaceae, Salicaceae, and Caprifoliaceae were shared among the host plants in these regions.
摘要：
在2020年至2023年之间，从青海省三江源地区的主要林区采集了锈菌标本，产生300多个样本。使用形态学和分子生物学技术对这些森林的锈病真菌进行了分类学和系统发育研究。调查确定了来自7个家族的锈菌，12属，56种和品种，包括10条新的主机记录,中国的1个新纪录，2个新物种涉及的寄主植物属于26个家庭，48属,78种。竹节科和香菇科是优势科，Puccinia属,Melampsora,和金孢菌很普遍。三江源森林中的锈菌与北温带具有生物地理亲和力。植物区系比较显示与内蒙古锈菌有较高的相似性，甘肃,和西藏，与海南的相似性较低。对锈菌寄主植物的生命形式的分析表明，草本植物是最常见的，其次是灌木和树木。在三江源的不同地区，锈菌被发现如下：果洛县有6个科，9属，和28种；玉树州有5科，8属,31种；黄南州有5科，9属，和26种；海南州有4科，5属,10种。Pucciniaceae家族，Melamporaceae,并且在所有四个地区都很常见。此外，玫瑰科，菊科,毛竹科,杨柳科,和卷叶草科在这些地区的寄主植物中共享。
