Insight into Central Asian flora from the Cenozoic Tianshan montane origin and radiation of Lagochilus (Lamiaceae)статья
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Дата последнего поиска статьи во внешних источниках: 21 октября 2017 г.
Аннотация:The Tianshan Mountains play a significant role in the Central Asian flora and vegetation.
Lagochilus has a distribution concentration in Tianshan Mountains and Central Asia. To
investigate generic spatiotemporal evolution, we sampled most Lagochilus species and
sequenced six cpDNA locations (rps16, psbA-trnH, matK, trnL-trnF, psbB-psbH, psbKpsbI).
We employed BEAST Bayesian inference for dating, and S-DIVA, DEC, and BBM for
ancestral area/biome reconstruction. Our results clearly show that the Tianshan Mountains,
especially the western Ili-Kirghizia Tianshan, as well as Sunggar and Kaschgar, was the
ancestral area. Ancestral biome was mainly in the montane steppe zone of valley and slope
at altitudes of 1700–2700 m, and the montane desert zone of foothill and front-hill at 1000–
1700 m. Here two sections Inermes and Lagochilus of the genus displayed “uphill” and
“downhill” speciation process during middle and later Miocene. The origin and diversification
of the genus were explained as coupled with the rapid uplift of the Tianshan Mountains starting
in late Oligocene and early Miocene ca. 23.66~19.33 Ma, as well as with uplift of the
Qinghai-Tibetan Plateau (QTP) and Central Asian aridification