在Sphagnum capillifolium复合体的环状物种中,遗传多样性和结构的并行模式
Karn Imwattana1,2, Blanka Aguero1, Marta Nieto-Lugilde1
1Department of Biology & L. E. Anderson Bryophyte Herbarium, Duke University, Durham, NC, USA.
American journal of botany
|May 20, 2024
概括
泥炭的遗传模式揭示了冰川避难区的生存情况. 这项研究强调了历史事件如何塑造广泛分布的植物物种的种群结构.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 遗传学 是一个遗传学.
背景情况:
- 相关物种之间的种群遗传变异的共同地理模式可以揭示历史的多样化事件.
- 斯法gnum capillifolium复合体,包括Acutifolia亚属中的环状泥炭,跨越北半球的冰化和不冰化地区.
研究的目的:
- 为了推断Sphagnum亚属Acutifolia的系谱.
- 研究S. capillifolium复合体中的五个环状物种的种群结构和遗传多样性.
主要方法:
- 对于亚基的大多数物种,生成了RAD测序数据. 这是Acutifolia.
- 在S. capillifolium复合体内,收集了环带物种分布范围内的样本.
主要成果:
- 在S. capillifolium复合体内,至少有14个家族遗传集群得到了解决.
- 在五个环礁物种中观察到共同的种群模式,在北美东部/欧洲和太平洋西北/贝林吉亚/北极地区有不同的系统.
- 阿拉斯加成为遗传混合,多样性和特有亚种群的热点.
结论:
- 结果支持S. capillifolium复杂种群在最后一个冰川最大时期存在多个冰川避难所的假设.
- 长距离的分散,瓶和适应避难所特定条件可能塑造了当前的地理模式.
- 历史事件在广泛分布的植物物种的种群结构中起着至关重要的作用.
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