Mimosa catherinensis SNP data sets

To inform management strategies for conservation of Mimosa catharinensis – a narrow endemic, critically endangered plant species – we identified 1,497 unlinked SNP markers derived from a reduced representation sequencing method (i.e., ddRADseq). This set of molecular markers was employed to assess intrapopulation genetic parameters and the demographic history of one extremely small population of M. catharinensis located in the Brazilian Atlantic Forest. We observed a moderate level of genetic diversity for M. catharinensis. Interestingly, M. catharinensis, which is a lianescent shrub with no indication of seed production for at least two decades, presented high levels of outcrossing and no evidence of inbreeding. However, the reconstruction of demographic history of M. catharinensis indicate that the population should be suffered a recent bottleneck.

为制定狭域特有、极危植物卡塔里纳含羞草（Mimosa catharinensis）的保护管理策略，本研究通过简化基因组测序技术（reduced representation sequencing，即ddRADseq）开发了1497个不连锁的单核苷酸多态性（Single Nucleotide Polymorphism, SNP）标记。利用这套分子标记，我们对分布于巴西大西洋森林的1个极小种群的卡塔里纳含羞草开展了种群内遗传参数评估与种群历史动态重建。研究结果显示，该物种的遗传多样性处于中等水平。值得注意的是，这种至少二十余年未产生种子的藤状灌木，展现出较高的异交率且未检测到近交信号。然而，种群历史动态重建结果表明，该种群近期经历了遗传瓶颈效应。