Betula tianshanica and Betula microphylla Raw sequence reads

Molecular markers, ecological niche models (ENM) and herbarium records can help us gain a clear picture of allele sharing and dynamics of geographic zones, which provide deep insights into species conservation. Betula microphylla is a declining wetland species in NW China that forms a continuum of leaf morphology with its relative Betula tianshanica. We use ENM to predict the distribution of B. microphylla, B. tianshanica and the more commonly occurring B. platyphylla. We use restriction-site associated DNA sequencing and SSRs to resolve their genetic structure and patterns of allele sharing.

分子标记 (Molecular markers)、生态位模型 (ecological niche models, ENM) 与标本馆记录，可帮助我们清晰刻画等位基因共享与地理区域动态的全貌，为物种保护研究提供深刻的科学洞见。小叶桦 (Betula microphylla) 是中国西北地区的衰退型湿地物种，其与近缘种天山桦 (Betula tianshanica) 之间呈现出连续的叶片形态梯度。本研究利用生态位模型预测小叶桦、天山桦以及分布更为广泛的白桦 (Betula platyphylla) 的潜在分布范围；通过限制性酶切位点相关DNA测序与简单序列重复 (Simple Sequence Repeats, SSRs) 解析三者的遗传结构与等位基因共享模式。