Xiao‐Long Jiang

Fritillaria pallidiflora is an endangered officinal herb distributed in the Tianshan Mountains of northwestern China. We examined its phylogeography to study evolutionary processes and suggest implications for conservation. Six haplotypes were detected based on three chloroplast non‐coding spacers ( psb A‐ trn H, rps 16, and trn S‐ trn G); genetic variation mainly occurred among populations and SAMOVA groups. This species is distributed in different deep valleys, and we speculate that these fragmented habitats cause gene flow barriers among populations and groups. We also speculate that during glacial periods, extremely low temperatures and aridity caused additional range shrinkage and fragmentation, factors consequently resulting in significant intraspecific differentiation in allopatric regions. For setting a conservation management plan, we identified the Lucaogou region as the most important area, and we designated two ESUs for separate management.

Conservation Genetics

Habitat Fragmentation

10.1111/njb.00677

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Citations (8)

Genetic Structure of Helianthemum Populations with a Disjunctive Distribution in Central Asia and Northwestern China and the Implications for Conservation

SSRN Electronic Journal (2022)

Zhihao Su Li Zhuo Lixin Zhang Xiaoying Zhao Xiao‐Long Jiang

Helianthemum songaricum and H. ordosicum are two shrubs with a disjunctive distribution in Central Asia and northwestern China. For conservation purposes, we used genotyping by sequencing (GBS) to investigate their evolutionary history and population genetic structure. Based on the GBS data, H. songaricum populations showed considerable genetic difference from H. ordosicum populations, and H. songaricum populations are strongly genetically differentiated from each other within the isolated valleys in the Tianshan Mountains. We speculated that the lineage split between H. ordosicum and H. songaricum might be resulted from uplift of the northern Tibetan Plateau and the Tianshan Mountains in the late Tertiary, and the disjunctions between the two species may represent two co-temporal migration events between Middle East and Central Asia/Ordos Plateau. Based on our SNP data, we propose conservation strategies for the two species.

Central Asia

10.2139/ssrn.4197793

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Citations (0)

Population genetics of an endangered desert shrub endemic to northwestern China

Trees (2024)

Li Zhuo Xiao‐Long Jiang Hongxiang Zhang Zhihao Su

Desert (philosophy)

Population Genetics

Endemism

10.1007/s00468-024-02529-2

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