Xun Gong

Bio: Xun Gong is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Ligularia & Population. The author has an hindex of 27, co-authored 170 publications receiving 2661 citations. Previous affiliations of Xun Gong include Rikkyo University & Tokushima Bunri University.

A molecular phylogeny of Chinese Apiaceae subfamily Apioideae inferred from nuclear ribosomal DNA internal transcribed spacer sequences

Abstract: The Hengduan Mountains of the Sino-Himalayas are rich in endemic species of Apiaceae subfamily Apioideae. To investigate relationships among these species and to ascertain their higher-level phylogenetic placements within the subfamily, we examined 106 accessions (representing 100 species from 52 genera) including the Chinese endemic genera Changium, Cyclorhiza, Notopterygium, Nothosmyrnium, and Sinolimprichtia. Sixty-three of these accessions were newly sequenced. Phylogenetic trees were inferred using maximum parsimony and Bayesian analyses of nuclear ribosomal DNA internal transcribed spacer (ITS) sequences. The phylogenetic trees were highly consistent and revealed several major clades heretofore unrecognized in the subfamily. Changium and Cyclorhiza fall within the Komarovia clade of previous investigations and Nothosmyrnium allies with tribe Pimpinelleae. Notopterygium and Sinolimprichtia along with many other taxa of Sino-Himalayan distribution comprise a well-supported East Asia clade; Vicatia and Haplosphaera arise within a paraphyletic Notopterygium. Other newly recognized, well-supported major clades include the Chamaesium clade, sister group to all other examined Apioideae except tribe Bupleureae, and the Asian Acronema clade, sister group to tribe Scandiceae. The Chamaesium clade and Bupleureae may represent the earliest diverging lineages of Apioideae in Asia. Sinodielsia allies weakly with Pterocyclus or is a sister group to the clade of tribe Apieae plus Pterocyclus; Sinodielsia is distinct from Meeboldia and Vicatia. Genera whose boundaries are poorly defined and controversial on the basis of morphology (Ligusticum, Peucedanum, Physospermopsis, Pimpinella, Pleurospermum, Sinocarum, Tongoloa, Trachyspermum) are not monophyletic in the ITS-based phylogenies. Further study of these Chinese endemics is necessary to produce a comprehensive, modern classification of Apiaceae subfamily Apioideae.

Diversity of life

Abstract: It is clear that the above can lead to confusion when scientists of different countries are trying to communicate with each other. Another example is the burrowing rodent called a gopher found throughout the western United States. In the southeastern United States the term gopher refers to a burrowing turtle very similar to the desert tortoise found in the American southwest. One final example; two North American mammals known as the elk and the caribou are known in Europe as the reindeer and the elk. We never sing “Rudolph the Red-nosed elk”! Confused? This was the reason for creating an internationally recognized system of naming organisms. To avoid confusion, living organisms are assigned a scientific name based on Latin or Latinized words. The English sparrow is Passer domesticus or Passer domesticus (italics or underlining these two names is the official written representation of a scientific name). Using a uniform naming system allows scientists from all over the world to recognize exactly which life form a scientist is referring to. The naming process is called the binomial system of nomenclature. Passer is comparable to a surname and is called the genus, while domesticus is the specific or species name (like your given name) of the English sparrow. Now scientists can give all sparrow-like birds the genus Passer but the species name will vary. All similar genera (plural for genus) can be grouped into another, “higher” category (see below). Study the following for a more through understanding of taxonomy. Taxonomy Analogy Kingdom: Animalia Country

Systematics And The Origin Of Species

Abstract: Thank you very much for downloading systematics and the origin of species. Maybe you have knowledge that, people have look numerous times for their chosen readings like this systematics and the origin of species, but end up in malicious downloads. Rather than enjoying a good book with a cup of coffee in the afternoon, instead they juggled with some infectious virus inside their desktop computer. systematics and the origin of species is available in our book collection an online access to it is set as public so you can get it instantly. Our book servers hosts in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Kindly say, the systematics and the origin of species is universally compatible with any devices to read.