Evolutionary response to the Qinghai-Tibetan Plateau uplift: Phylogeny and biogeography of Ammopiptanthus and tribe Thermopsideae (Fabaceae)

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1 Key Laboratory of Biogeography and Bioresource in Arid Land, Institute of Ecology and Geography in Xinjiang, The Chinese Academy of Sciences, Urumqi, Xinjiang, China
2 Turpan Eremophytes Botanic Garden, The Chinese Academy of Sciences, Turpan, Xinjiang, China
3 College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
4 Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong, China
DOI
10.7287/peerj.preprints.2757v1
Published
Accepted
Subject Areas
Biodiversity, Biogeography, Evolutionary Studies, Genetics, Plant Science
Keywords
Phylogeny, biogeography, Qinghai-Tibetan Plateau uplift, evolutionary divergence, Salweenia, Thermopsideae, Ammopiptanthus
Copyright
© 2017 Shi et al.
Licence
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ Preprints) and either DOI or URL of the article must be cited.
Cite this article
Shi W, Liu P, Duan L, Pan B, Su Z. 2017. Evolutionary response to the Qinghai-Tibetan Plateau uplift: Phylogeny and biogeography of Ammopiptanthus and tribe Thermopsideae (Fabaceae) PeerJ Preprints 5:e2757v1

Abstract

Based on sequence data from the nuclear ITS and four cpDNA regions (matK, trnH-psbA, trnL-trnF, rbcL), phylogeny of the tribe Thermopsideae was inferred. Our analyses supported this tribe being merged into a monophyletic Sophoreae in a broad sense, with exclusion of Pickeringia. Genera of Sophoreae were separated into the Thermopsoid clade and Sophoroid clade. Monophyly of Anagyris, Baptisia and Piptanthus were basically supported in the Thermopsoid clade. Ammopiptanthus, consisting of A. mongolicus and A. nanus, nested within the Sophoroid clade, with Salweenia as its sister. Ammopiptanthus and Salweenia disjunctively distributed in desert of Northwestern China and Hengduan Mountains, respectively. Divergence age was estimated based on the ITS phylogenetic analysis. Emergence of the common ancestor of Ammopiptanthus and Salweenia, divergence between these two genera, and split of Ammopiptanthus species occurred at approximately 26.96 Ma, 4.74 Ma and 2.04 Ma, respectively, which may be response to the second, third, fourth rapid uplift of the Qinghai-Tibetan Plateau, respectively.

Author Comment

This is a submission to PeerJ for review.

Supplemental Information

DNA sequence alignments used in this study

The nuclear ITS and combined plastid datasets are given in fasta format.

DOI: 10.7287/peerj.preprints.2757v1/supp-1