Ancient introgression drives adaptation to cooler and drier mountain habitats in a cypress species complex

Yazhen Ma; Ji Wang; Quanjun Hu; Jialiang Li; Yongshuai Sun; Lei Zhang; Richard John Abbott; Jianquan Liu; Kanghan Mao

doi:10.1038/s42003-019-0445-z

Ancient introgression drives adaptation to cooler and drier mountain habitats in a cypress species complex

Yazhen Ma, Ji Wang, Quanjun Hu, Jialiang Li, Yongshuai Sun, Lei Zhang, Richard John Abbott, Jianquan Liu, Kanghan Mao

School of Biology

Research output: Contribution to journal › Article › peer-review

Abstract

Introgression may act as an important source of new genetic variation to facilitate the adaptation of organisms to new environments, yet how introgression might enable tree species to adapt to higher latitudes and elevations remains unclear. Applying whole-transcriptome sequencing and population genetic analyses, we present an example of ancient introgression from a cypress species (Cupressus gigantea) that occurs at higher latitude and elevation on the Qinghai-Tibet Plateau into a related species (C. duclouxiana), which has likely aided the latter species to extend its range by colonizing cooler and drier mountain habitats during postglacial periods. We show that 16 introgressed candidate adaptive loci could have played pivotal roles in response to diverse stresses experienced in a high-elevation environment. Our findings provide new insights into the evolutionary history of Qinghai-Tibet Plateau plants and the importance of introgression in the adaptation of species to climate change.

Original language	English
Article number	213
Number of pages	12
Journal	Communications Biology
Volume	2
DOIs	https://doi.org/10.1038/s42003-019-0445-z
Publication status	Published - 18 Jun 2019

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title = "Ancient introgression drives adaptation to cooler and drier mountain habitats in a cypress species complex",

abstract = "Introgression may act as an important source of new genetic variation to facilitate the adaptation of organisms to new environments, yet how introgression might enable tree species to adapt to higher latitudes and elevations remains unclear. Applying whole-transcriptome sequencing and population genetic analyses, we present an example of ancient introgression from a cypress species (Cupressus gigantea) that occurs at higher latitude and elevation on the Qinghai-Tibet Plateau into a related species (C. duclouxiana), which has likely aided the latter species to extend its range by colonizing cooler and drier mountain habitats during postglacial periods. We show that 16 introgressed candidate adaptive loci could have played pivotal roles in response to diverse stresses experienced in a high-elevation environment. Our findings provide new insights into the evolutionary history of Qinghai-Tibet Plateau plants and the importance of introgression in the adaptation of species to climate change.",

author = "Yazhen Ma and Ji Wang and Quanjun Hu and Jialiang Li and Yongshuai Sun and Lei Zhang and Abbott, {Richard John} and Jianquan Liu and Kanghan Mao",

note = "Funding: This work was supported by the National Natural Science Foundation of China (grant numbers 31590821, 31622015, 31370261), the National Basic Research Program of China (grant number 2014CB954100), Sichuan Provincial Department of Science and Technology (grant number 2015JQ0018) and Sichuan University (Fundamental Research Funds for the Central Universities, SCU2019D013, SCU 2018D006)",

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AU - Ma, Yazhen

AU - Wang, Ji

AU - Hu, Quanjun

AU - Li, Jialiang

AU - Sun, Yongshuai

AU - Zhang, Lei

AU - Abbott, Richard John

AU - Liu, Jianquan

AU - Mao, Kanghan

N1 - Funding: This work was supported by the National Natural Science Foundation of China (grant numbers 31590821, 31622015, 31370261), the National Basic Research Program of China (grant number 2014CB954100), Sichuan Provincial Department of Science and Technology (grant number 2015JQ0018) and Sichuan University (Fundamental Research Funds for the Central Universities, SCU2019D013, SCU 2018D006)

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Y1 - 2019/6/18

N2 - Introgression may act as an important source of new genetic variation to facilitate the adaptation of organisms to new environments, yet how introgression might enable tree species to adapt to higher latitudes and elevations remains unclear. Applying whole-transcriptome sequencing and population genetic analyses, we present an example of ancient introgression from a cypress species (Cupressus gigantea) that occurs at higher latitude and elevation on the Qinghai-Tibet Plateau into a related species (C. duclouxiana), which has likely aided the latter species to extend its range by colonizing cooler and drier mountain habitats during postglacial periods. We show that 16 introgressed candidate adaptive loci could have played pivotal roles in response to diverse stresses experienced in a high-elevation environment. Our findings provide new insights into the evolutionary history of Qinghai-Tibet Plateau plants and the importance of introgression in the adaptation of species to climate change.

AB - Introgression may act as an important source of new genetic variation to facilitate the adaptation of organisms to new environments, yet how introgression might enable tree species to adapt to higher latitudes and elevations remains unclear. Applying whole-transcriptome sequencing and population genetic analyses, we present an example of ancient introgression from a cypress species (Cupressus gigantea) that occurs at higher latitude and elevation on the Qinghai-Tibet Plateau into a related species (C. duclouxiana), which has likely aided the latter species to extend its range by colonizing cooler and drier mountain habitats during postglacial periods. We show that 16 introgressed candidate adaptive loci could have played pivotal roles in response to diverse stresses experienced in a high-elevation environment. Our findings provide new insights into the evolutionary history of Qinghai-Tibet Plateau plants and the importance of introgression in the adaptation of species to climate change.

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JO - Communications Biology

JF - Communications Biology

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Ancient introgression drives adaptation to cooler and drier mountain habitats in a cypress species complex

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