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Phylogeny and historical biogeography of Hydrophyllaceae and Namaceae, with a special reference to Phacelia and Wigandia
Systematics and Biodiversity ( IF 1.8 ) Pub Date : 2020-06-18 , DOI: 10.1080/14772000.2020.1771471
Maria-Anna Vasile 1 , Julius Jeiter 1 , Maximilian Weigend 1 , Federico Luebert 1, 2
Affiliation  

This study aimed to examine the systematic position of South American species of Phacelia (Hydrophyllaceae) and Wigandia (Namaceae) and the historical biogeography of Hydrophyllaceae and Namaceae using molecular dating and ancestral area reconstruction. To this end, we constructed two datasets, one with a plastid (ndhF) and one with a nuclear marker (ITS), using previously published and newly generated sequences. We inferred the phylogeny of Hydrophyllaceae and Namaceae implementing both likelihood and Bayesian methods. We also estimated divergence times and ancestral areas for all major clades using a relaxed Bayesian uncorrelated molecular clock and the dispersal-extinction-cladogenesis (DEC) approach, respectively. The South American representatives of Phacelia are placed in three different clades of the genus and two colonizations of South America by North American species took place in the Miocene and at least one in the late Pliocene. Wigandia forms a well-supported monophylum with interspecific relationships partly unresolved. Within Namaceae a colonization of South America by North American species occurred during the Oligocene–Miocene transition. The MRCA of Wigandia was distributed in North and Central America in late Oligocene. Long-distance dispersal may have been necessary for the colonization of South America by Namaceae during the Oligocene–Miocene transition, when North and South America were not connected.

中文翻译:

Hydrophyllaceae 和 Namaceae 的系统发育和历史生物地理学,特别提到 Phacelia 和 Wigandia

本研究旨在利用分子年代测定法和祖区重建方法,研究南美金龟子属(Hydrophyllaceae)和 Wigandia 属(Namaceae)的系统位置,以及Hydrophyllaceae 和 Namaceae 的历史生物地理学。为此,我们使用以前发布的和新生成的序列构建了两个数据集,一个带有质体 (ndhF),另一个带有核标记 (ITS)。我们使用似然和贝叶斯方法推断了水藻科和楠木科的系统发育。我们还分别使用宽松的贝叶斯不相关分子钟和分散 - 灭绝 - 分支发生(DEC)方法估计了所有主要进化枝的发散时间和祖先区域。Phacelia 的南美代表被置于该属的三个不同的进化枝中,北美物种在南美的两次殖民发生在中新世,至少一次在上新世晚期。Wigandia 形成了一个得到充分支持的单系,其中种间关系部分未解决。在南美科内,北美物种在渐新世-中新世过渡期间在南美洲进行了殖民。Wigandia的MRCA分布于渐新世晚期的北美洲和中美洲。在渐新世 - 中新世过渡期间,当北美和南美没有连接时,长距离扩散可能是楠马科在南美的殖民化所必需的。Wigandia 形成了一个得到充分支持的单系,其中种间关系部分未解决。在南美科内,北美物种在渐新世-中新世过渡期间在南美洲进行了殖民。Wigandia的MRCA分布于渐新世晚期的北美洲和中美洲。在渐新世 - 中新世过渡期间,当北美和南美没有连接时,长距离扩散可能是楠马科在南美的殖民化所必需的。Wigandia 形成了一个得到充分支持的单系,其中种间关系部分未解决。在南美科植物中,北美物种在渐新世-中新世过渡期间在南美洲进行了殖民。Wigandia的MRCA分布于渐新世晚期的北美洲和中美洲。在渐新世 - 中新世过渡期间,当北美和南美没有连接时,长距离扩散可能是楠马科在南美的殖民化所必需的。
更新日期:2020-06-18
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