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Genetic diversity in natural populations of the endangered Neotropical orchid Telipogon peruvianus
Plant Species Biology ( IF 1.1 ) Pub Date : 2020-09-09 , DOI: 10.1111/1442-1984.12291 Carlos Martel 1, 2 , Giovanni Scopece 3 , Salvatore Cozzolino 3 , Manfred Ayasse 1 , Fabio Pinheiro 4 , Donata Cafasso 3
Plant Species Biology ( IF 1.1 ) Pub Date : 2020-09-09 , DOI: 10.1111/1442-1984.12291 Carlos Martel 1, 2 , Giovanni Scopece 3 , Salvatore Cozzolino 3 , Manfred Ayasse 1 , Fabio Pinheiro 4 , Donata Cafasso 3
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Telipogon peruvianus is a highly restricted, sexually deceptive, Neotropical orchid species, endemic to the southern Peruvian Andes. It is only known from two localities, which are affected by anthropogenic disturbance. Here, we investigated whether the restricted distribution of T. peruvianus has led to low genetic diversity and inbreeding, thus threatening its survival. We isolated 10 novel microsatellite loci specific for T. peruvianus (and that also cross‐amplified in related species) from two adjacent populations. We found that genetic diversity within populations was only moderately reduced, along with some evidence of inbreeding. We found low levels of genetic differentiation, suggesting connectivity by pollen/seed flow between the two populations. Effective population size was comparable to the real number of flowering individuals in the populations and we did not detect the signature of recent bottlenecks. Taken together, these results show that, despite increasing anthropogenic pressure, the two investigated populations of T. peruvianus still host valuable genetic diversity that should be preserved through appropriate conservation strategies.
中文翻译：
濒危新热带兰花Telipogon peruvianus自然种群的遗传多样性
Telipogon peruvianus是秘鲁南部安第斯山脉特有的高度受限制的，具有欺骗性的新热带兰花物种。仅从受人为干扰影响的两个地方得知。在这里，我们调查了秘鲁猪笼草的有限分布是否导致低遗传多样性和近交，从而威胁其生存。我们分离出了10个新的特异于秘鲁秘鲁锥虫的微卫星基因座（并且在相关物种中也交叉扩增）来自两个相邻种群。我们发现，种群中的遗传多样性仅被适度降低，并且有近亲繁殖的证据。我们发现遗传分化水平较低，表明这两个种群之间的花粉/种子流具有连通性。有效种群规模可与种群中开花个体的实际数量相媲美，而且我们没有发现最近瓶颈的特征。综上所述，这些结果表明，尽管人为压力增加，但两个被调查的秘鲁锥虫种群仍具有宝贵的遗传多样性，应通过适当的保护策略对其进行保护。
更新日期：2020-09-09
中文翻译：
濒危新热带兰花Telipogon peruvianus自然种群的遗传多样性
Telipogon peruvianus是秘鲁南部安第斯山脉特有的高度受限制的，具有欺骗性的新热带兰花物种。仅从受人为干扰影响的两个地方得知。在这里，我们调查了秘鲁猪笼草的有限分布是否导致低遗传多样性和近交，从而威胁其生存。我们分离出了10个新的特异于秘鲁秘鲁锥虫的微卫星基因座（并且在相关物种中也交叉扩增）来自两个相邻种群。我们发现，种群中的遗传多样性仅被适度降低，并且有近亲繁殖的证据。我们发现遗传分化水平较低，表明这两个种群之间的花粉/种子流具有连通性。有效种群规模可与种群中开花个体的实际数量相媲美，而且我们没有发现最近瓶颈的特征。综上所述，这些结果表明，尽管人为压力增加，但两个被调查的秘鲁锥虫种群仍具有宝贵的遗传多样性，应通过适当的保护策略对其进行保护。
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