Molecular phylogeny and biogeography of the Qinghai-Tibet Plateau endemic Nannoglottis (Asteraceae)
All taxa endemic to the Qinghai-Tibet Plateau are hypothesized to have originated in situ or from immediately adjacent areas because of the relatively recent formation of the plateau since the Pliocene, followed by the large-scaled biota extinction and recession caused by the Quaternary ice sheet. H...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2002
|
Subjects: | |
Online Access: | http://ir.nwipb.ac.cn/handle/363003/1417 |
id |
ftchinacascnwipb:oai:210.75.249.4:363003/1417 |
---|---|
record_format |
openpolar |
spelling |
ftchinacascnwipb:oai:210.75.249.4:363003/1417 2023-05-15T16:41:38+02:00 Molecular phylogeny and biogeography of the Qinghai-Tibet Plateau endemic Nannoglottis (Asteraceae) Liu, JQ Gao, TG Chen, ZD Lu, AM 2002-06-01 http://ir.nwipb.ac.cn/handle/363003/1417 英语 eng MOLECULAR PHYLOGENETICS AND EVOLUTION Liu Jianquan, Gao Tiangang, Chen Zhiduan, Lu Anming.Molecular phylogeny and biogeography of the Qinghai-Tibet Plateau endemic Nannoglottis (Asteraceae).MOLECULAR PHYLOGENETICS AND EVOLUTION,2002,23(3):307-325 http://ir.nwipb.ac.cn/handle/363003/1417 Nannoglottis Astereae Asteraceae Trnl-f Ndhf Its The Qinghai-tibet Plateau Endemics Phylogeny Historical Biogeography 生物科学::生物化学 Science & Technology 生物科学::分子生物学 Life Sciences & Biomedicine NUCLEAR RIBOSOMAL DNA NONCODING CHLOROPLAST SEQUENCES ASTEREAE ASTERACEAE GENE NDHF EVOLUTION ORIGIN SENECIONEAE ALLIANCE ISLANDS ANTHEMIDEAE Biochemistry & Molecular Biology Evolutionary Biology Genetics & Heredity Article 期刊论文 2002 ftchinacascnwipb 2023-03-26T20:22:09Z All taxa endemic to the Qinghai-Tibet Plateau are hypothesized to have originated in situ or from immediately adjacent areas because of the relatively recent formation of the plateau since the Pliocene, followed by the large-scaled biota extinction and recession caused by the Quaternary ice sheet. However, identification of specific progenitors remains difficult for some endemics, especially some endemic genera. Nannoglottis, with about eight species endemic to this region, is one such genus. Past taxonomic treatments have suggested its relationships with four different tribes of Asteraceae. We intend to identify the closest relatives of Nannoglottis by evaluating the level of monophyly, tribal delimitation, and systematic position of the genus by using molecular data from ndhF gene, trnL-F, and ITS region sequences. We find that all sampled species of Nannoglottis are a well-defined monophyly. This supports all recent taxonomic treatments of Nannoglottis, in which all sampled species were placed in one broadly re-circumscribed genus. Nannoglottis is most closely related to the Astereae, but stands as an isolated genus as the first diverging lineage of the tribe, without close relatives. A tentative relationship was suggested for Nannoglottis and the next lineage of the tribe was based on the ITS topology, the "basal group," which consists of seven genera from the Southern Hemisphere. Such a relationship is supported by some commonly shared plesiomorphic morphological characters. Despite the very early divergence of Nannoglottis in the Astereae, the tribe must be regarded to have its origin in Southern Hemisphere rather than in Asia, because based on all morphological, molecular, biogeographical, and fossil data, the Asteraceae and its major lineages (tribes) are supposed to have originated in the former area. Long-distance dispersal using Southeast Asia as a steppingstone from Southern Hemisphere to the Qinghai-Tibet Plateau is the most likely explanation for this unusual biogeographic link of Nannoglottis. The ... Article in Journal/Newspaper Ice Sheet Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences) |
institution |
Open Polar |
collection |
Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascnwipb |
language |
English |
topic |
Nannoglottis Astereae Asteraceae Trnl-f Ndhf Its The Qinghai-tibet Plateau Endemics Phylogeny Historical Biogeography 生物科学::生物化学 Science & Technology 生物科学::分子生物学 Life Sciences & Biomedicine NUCLEAR RIBOSOMAL DNA NONCODING CHLOROPLAST SEQUENCES ASTEREAE ASTERACEAE GENE NDHF EVOLUTION ORIGIN SENECIONEAE ALLIANCE ISLANDS ANTHEMIDEAE Biochemistry & Molecular Biology Evolutionary Biology Genetics & Heredity |
spellingShingle |
Nannoglottis Astereae Asteraceae Trnl-f Ndhf Its The Qinghai-tibet Plateau Endemics Phylogeny Historical Biogeography 生物科学::生物化学 Science & Technology 生物科学::分子生物学 Life Sciences & Biomedicine NUCLEAR RIBOSOMAL DNA NONCODING CHLOROPLAST SEQUENCES ASTEREAE ASTERACEAE GENE NDHF EVOLUTION ORIGIN SENECIONEAE ALLIANCE ISLANDS ANTHEMIDEAE Biochemistry & Molecular Biology Evolutionary Biology Genetics & Heredity Liu, JQ Gao, TG Chen, ZD Lu, AM Molecular phylogeny and biogeography of the Qinghai-Tibet Plateau endemic Nannoglottis (Asteraceae) |
topic_facet |
Nannoglottis Astereae Asteraceae Trnl-f Ndhf Its The Qinghai-tibet Plateau Endemics Phylogeny Historical Biogeography 生物科学::生物化学 Science & Technology 生物科学::分子生物学 Life Sciences & Biomedicine NUCLEAR RIBOSOMAL DNA NONCODING CHLOROPLAST SEQUENCES ASTEREAE ASTERACEAE GENE NDHF EVOLUTION ORIGIN SENECIONEAE ALLIANCE ISLANDS ANTHEMIDEAE Biochemistry & Molecular Biology Evolutionary Biology Genetics & Heredity |
description |
All taxa endemic to the Qinghai-Tibet Plateau are hypothesized to have originated in situ or from immediately adjacent areas because of the relatively recent formation of the plateau since the Pliocene, followed by the large-scaled biota extinction and recession caused by the Quaternary ice sheet. However, identification of specific progenitors remains difficult for some endemics, especially some endemic genera. Nannoglottis, with about eight species endemic to this region, is one such genus. Past taxonomic treatments have suggested its relationships with four different tribes of Asteraceae. We intend to identify the closest relatives of Nannoglottis by evaluating the level of monophyly, tribal delimitation, and systematic position of the genus by using molecular data from ndhF gene, trnL-F, and ITS region sequences. We find that all sampled species of Nannoglottis are a well-defined monophyly. This supports all recent taxonomic treatments of Nannoglottis, in which all sampled species were placed in one broadly re-circumscribed genus. Nannoglottis is most closely related to the Astereae, but stands as an isolated genus as the first diverging lineage of the tribe, without close relatives. A tentative relationship was suggested for Nannoglottis and the next lineage of the tribe was based on the ITS topology, the "basal group," which consists of seven genera from the Southern Hemisphere. Such a relationship is supported by some commonly shared plesiomorphic morphological characters. Despite the very early divergence of Nannoglottis in the Astereae, the tribe must be regarded to have its origin in Southern Hemisphere rather than in Asia, because based on all morphological, molecular, biogeographical, and fossil data, the Asteraceae and its major lineages (tribes) are supposed to have originated in the former area. Long-distance dispersal using Southeast Asia as a steppingstone from Southern Hemisphere to the Qinghai-Tibet Plateau is the most likely explanation for this unusual biogeographic link of Nannoglottis. The ... |
format |
Article in Journal/Newspaper |
author |
Liu, JQ Gao, TG Chen, ZD Lu, AM |
author_facet |
Liu, JQ Gao, TG Chen, ZD Lu, AM |
author_sort |
Liu, JQ |
title |
Molecular phylogeny and biogeography of the Qinghai-Tibet Plateau endemic Nannoglottis (Asteraceae) |
title_short |
Molecular phylogeny and biogeography of the Qinghai-Tibet Plateau endemic Nannoglottis (Asteraceae) |
title_full |
Molecular phylogeny and biogeography of the Qinghai-Tibet Plateau endemic Nannoglottis (Asteraceae) |
title_fullStr |
Molecular phylogeny and biogeography of the Qinghai-Tibet Plateau endemic Nannoglottis (Asteraceae) |
title_full_unstemmed |
Molecular phylogeny and biogeography of the Qinghai-Tibet Plateau endemic Nannoglottis (Asteraceae) |
title_sort |
molecular phylogeny and biogeography of the qinghai-tibet plateau endemic nannoglottis (asteraceae) |
publishDate |
2002 |
url |
http://ir.nwipb.ac.cn/handle/363003/1417 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
MOLECULAR PHYLOGENETICS AND EVOLUTION Liu Jianquan, Gao Tiangang, Chen Zhiduan, Lu Anming.Molecular phylogeny and biogeography of the Qinghai-Tibet Plateau endemic Nannoglottis (Asteraceae).MOLECULAR PHYLOGENETICS AND EVOLUTION,2002,23(3):307-325 http://ir.nwipb.ac.cn/handle/363003/1417 |
_version_ |
1766032096254492672 |