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Karst tiankengs preserve but constrain evolutionary potential in the endangered tree Magnolia aromatica.

Current biology : CB - 3 Aug 2026

Zhu Xian-Liang, Tang Jian-Min, Feng Chao, Li Ying-Ying, Feng Shuo, He Guo-Hua, Wang Jing, Wei Xiao, Kang Ming

Abstract excerpt

Karst tiankengs-giant enclosed sinkholes-harbor humid, shaded forests that may buffer climate stress yet isolate populations. Here, we generated a near telomere-to-telomere genome assembly for the endangered karst tree Magnolia aromatica and resequenced 26 populations across tiankeng interiors and surrounding habitats in southwest China. Population genomics resolved four lineages and indicated a history of...

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PMID: 42447863
DOI: 10.1016/j.cub.2026.06.051

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