Phylogenetic evidence clarifies the history of the extrusion of Indochina

• 成果类型: Article
• 署名作者: Li, Xiao - Qian; Peng, Huan - Wen; Xiang, Kun - Li; Xiang, Xiao - Guo; Jabbour, Florian; Ortiz, Rosa del C.; Soltis, Pamela S.; Soltis, Douglas E.; Wang, Wei
• 署名单位: Chinese Academy of Sciences; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Nanchang University; Nanchang University; Sorbonne Universite; Museum National d'Histoire Naturelle (MNHN); Centre National de la Recherche Scientifique (CNRS); Missouri Botanical Gardens; State University System of Florida; University of Florida; State University System of Florida; University of Florida
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-13233
• DOI: 10.1073/pnas.2322527121
• 发表日期: 2024-08-27
• 关键词: river shear zone; tibetan plateau; r package; constraints; EVOLUTION; shan; uplift; basin; asia; dispersal

摘要

The southeastward extrusion of Indochina along the Ailao Shan-Red River shear zone (ARSZ) is one of two of the most prominent consequences of the India-Asia collision. This plate-scale extrusion has greatly changed Southeast Asian topography and drainage patterns and effected regional climate and biotic evolution. However, little is known about how Indochina was extruded toward the southeast over time. Here, we sampled 42 plant and animal clades (together encompassing 1,721 species) that are distributed across the ARSZ and are not expected to disperse across long distances. We first assess the possible role of climate on driving the phylogenetic separations observed across the ARSZ. We then investigate the temporal dynamics of the extrusion of Indochina through a multitaxon analysis. We show that the lineage divergences across the ARSZ were most likely associated with the Indochinese extrusion rather than climatic events. The lineage divergences began at similar to 53 Ma and increased sharply similar to 35 Ma, with two peaks at similar to 19 Ma and similar to 7 Ma, and one valley at similar to 13 Ma. Our results suggest a two-phase model for the extrusion of Indochina, and in each phase, the extrusion was subject to periods of acceleration and decrease, in agreement with the changes of the India-Asia convergence rate and angle from the early Eocene to the late Miocene. This study highlights that a multitaxon analysis can illuminate the timing of subtle historical events that may be difficult for geological data to pinpoint and can be used to explore other tectonic events.