青藏高原饼干衣属地衣的系统分类学研究

	青藏高原饼干衣属地衣的系统分类学研究; Systematic study on Rinodina on the Qinghai-Tibet Plateau
	钟秋怡
导师	王立松
摘要	The genus Rinodina (Physciaceae, lichenized Ascomycota) is of high biodiversity, with about 300 species worldwide, of which 51 species have been reported in China. Qinghai-Tibet Plateau is rich in biodiversity that 25 Rinodina species have been reported in this region, accounting for nearly half of the total species of the genus reported in China. However, due to the lack of systematic and taxonomic studies, the specific species composition of Rinodina in this region is still unclear. In this research, taxonomy and molecular systematics are combined to study the Rinodina and Dimelaena species in the Qinghai-Tibet Plateau region and its adjacent areas in China. Firstly, taxonomic methods were used to study over 300 Rinodina and Dimelaena specimens, of which the morphological and anatomic characteristics were observed and measured. Besides, spot tests and TLC methods were used to analyze the lichen characteristic chemicals. Secondly, molecular systematic methods were used. The apothecia or partial parts of thalli were extracted as molecular materials. Totally 140 DNA segments including 80 ITS, 36 mtSSU and 24 nrLSU, were obtained by PCR amplification, and the phylogenetic analyses were performed by computer software such as Geneious, MAFFT, SequenceMatrix, Raxml, MrBayes and Figtree. In the present study, 24 Rinodina species are reported in this region, including 1 new combination, 4 new records in China and 3 expected new species, as well as 3 Dimelaena species, including 1 new combination and 1 expected new species. Besides, 9 species and 1 variety of Rinodina, and 1 species of Buellia, for which the holotype were collected from the Qinghai-Tibet Plateau or its adjacent areas, were studied, and the specimens from the holotype localities, the chemical information and related molecular sequences were obtained. Furthermore, 2 new combinations, Rinodina sarcogynoides (H. Magn.) Q. Y. Zhong & Li S. Wang and Dimelaena setschwana Q. Y. Zhong & Li S. Wang, and 5 new recorded species for China, including R. cf. archaea, R. cf. bolanderi, R. cf. cacaotina and R. cf. pachysperma are reported in this study. This thesis provides a key to the Rinodina and Dimelaena species on the Qinghai-Tibet Plateau or its adjacent areas in China, as well as the detailed descriptions, morphologic and microscopic pictures, distributional diagrams and taxonomic discussions. Besides, on the basis of previous studies, the ascospore types of Rinodina are reclassified here that 14 ascospore types are identified, including Beltraminia-type, Bicincta-type, Bischoffii-type, Conradia-type, Dirinaria-type, Milvina-type, Mischoblastia-type, Orcularia-type, Pachysporaria-type, Physcia-type, Physconia-type, Polyblastidium-type, Submuriform-type and Tunnicata-type. The pictures, descriptions and Chinese names of these ascospore types are provided. Moreover, the phylogenetic analysis results based on concatenated ITS-mtSSU-nrLSU sequence matrix suggest that the genus Rinodina is a polyphyle
	2021-05
文献类型	学位论文
条目标识符	http://ir.kib.ac.cn/handle/151853/74574
专题	昆明植物所硕博研究生毕业学位论文
推荐引用方式 GB/T 7714	钟秋怡. 青藏高原饼干衣属地衣的系统分类学研究, Systematic study on Rinodina on the Qinghai-Tibet Plateau[D],2021.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
钟秋怡-201820868_钟秋怡_青藏（29798KB）	学位论文		限制开放	CC BY-NC-SA	请求全文