首页|Phylogeography and introgression between Pinus kesiya and Pinus yunnanensis in Southeast Asia

Phylogeography and introgression between Pinus kesiya and Pinus yunnanensis in Southeast Asia

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Southeast Asia(SEA)has seen strong climatic oscillations and fluctuations in sea levels during the Quaternary.The impact of past climate changes on the evolution and distribution of local flora in SEA is still poorly understood.Here we aim to infer how the Quaternary climate change affects the evolutionary process and range shifts in two pine species.We investigated the population genetic structure and diversity using cytoplasmic DNA markers,and performed ecological niche modeling to reconstruct the species past distribution and to project range shift under future climates.We found substantial gene flow across the continuous distribution of the subtropical Pinus yunnanensis.In contrast,the tropical Pinus kesiya showed a strong population structure in accordance with its disjunct distribution across montane islands in Indochina and the Philippines.A broad hybrid zone of the two species occurs in southern Yunnan.Asymmetric introgression from the two species was detected in this zone with dominant mitochondrial gene flow from P.yunnanensis and chloroplast gene flow from P.kesiya.The observed population structure suggests a typical postglaciation expansion in P.yunnanensis,and a glacial expansion and interglacial contraction in P.kesiya.Ecological niche modeling supports the inferred demographic history and predicts a decrease in range size for P.kesiya under future climates.Our results suggest that tropical pine species in SEA have undergone evolutionary trajectories different from high latitude species related to their Quaternary climate histories.We also illustrate the need for urgent conservation actions in this fragmented landscape.

cpDNAintrogressionmtDNA capturephylogeographyPinus kesiyaPinus yunnanensis

Jie Gao、Kyle W.Tomlinson、Wei Zhao、Baosheng Wang、Ralph Sedricke Lapuz、Jing-Xin Liu、Bonifacio O.Pasion、Bach T.Hai、Souvick Chanthayod、Jin Chen、Xiao-Ru Wang

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CAS Key Laboratory of Tropical Forest Ecology,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Menglun 666303,Yunnan,China

Center of Conservation Biology,Core Botanical Gardens,Chinese Academy of Sciences,Menglun 666303,Yunnan,China

Center for Integrative Conservation,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Menglun 666303,Yunnan,China

Department of Ecology and Environmental Science,UPSC,Umeå University,Umeå 90187,Sweden

Key Laboratory of Plant Resources Conservation and Sustainable Utilization,South China Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,China

Cat Tien National Park,Vietnam Administration of Forestry,Ho Chi Minh 760000,Viet Nam

Department of Agriculture and Forestry,Oudomxay Province 04000,The Lao People's Democratic Republic

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Biodiversity Management Bureau-Department of Environment and Natural Resources(BMB-DENR)Strategic Priority Research Program of CASNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNSFC-Yunnan Government GrantCAS-TWAS President's Fellowship ProgramInstitutional Center for Shared Technologies and Facilities of Xishuangbanna Tropical Botanical Garden,CAS

2016-253XDA20070301NSFC 31770701NSFC 31870425U1502264

2024

10.1111/jse.12949

植物分类学报
中国科学院植物研究所　中国植物学会

植物分类学报

CSTPCD
影响因子：0.322
ISSN：1674-4918
年,卷(期)：2024.62(1)
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