Historical biogeography and phylogenetic relationships of the genus Chamaecyparis (Cupressaceae) inferred from chloroplast DNA polymorphism
Historical biogeography and phylogenetic relationships of the genus Chamaecyparis (Cupressaceae) inferred from chloroplast DNA polymorphism
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DOI：
10.1007/s00606-003-0031-0
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发表时间：
2003-10
影响因子：
1.9
通讯作者：
W. Wang;C. Hwang;T. Lin;S. Hwang
中科院分区：
文献类型：
--
作者：
W. Wang;C. Hwang;T. Lin;S. Hwang
原产于台湾、日本、加拿大和美国的chamaecyparisia属包括5种1变种，呈现出典型的东亚、北美西部和北美东部的断连分布格局。通过比较叶绿体trnv内含子和petg - trnp基因间间隔子1130 bp的组合数据，推测了chamaecyparisa种的系统发育关系。系统发育树分析表明，nootkatensis（Cupressus nootkatensisorXanthocyparis nootkatensis）与其他chamaecyparis种存在明显的分化。ForChamaecyparisspecies C。甲状腺发育c的姐妹；formosensisandC。鱼类和它们一起形成一个单系群。lawsoniana是c的妹妹。obtusaandC。taiwanensis;它们形成了另一个单系群。这两个单系类群的物种在进化速率上存在同质性。结果表明c的演化是发散的。taiwanensisandC。在这个调查中，台湾和分子证据支持sc。台湾有各种各样的c。obtusa。讨论了cpDNA基因间空间定位- trnp在甲型肝炎中的应用。结果表明：(1)至少有两次分化事件产生了东亚、北美西部和东部的间断分布；(2)在chamaecyparis发现了洲际姐妹种对；(3) c的两个洲际姐妹对的cpDNA差异。thyoidesandC。pisifera,并且。着lawsonianaandC。钝齿龙2.8%和1.1%，表明分化时间分别为1400万年前和550万年前中新世中晚期；(4) 2个亚洲chamaecparparis类群的cpDNA差异。obtusaandC。台湾，和之间c。pisiferaandC。formosensisis分别为0.25%和0.57%，表明其分化时间分别为更新世和上新世晚期的130万年和290万年前；这些估计的分化时间表明，chamaecyparisas从日本群岛迁移到台湾的时间相对较晚；(5)气候恶化有可能导致亚洲大陆黄斑蝶消失。
The genusChamaecypariscomprises five species and one variety native to Taiwan, Japan, Canada, and USA, which demonstrates a classical eastern Asian, western North American, and eastern North American disjunct distributional pattern. The phylogenetic relationships of the species ofChamaecypariswere inferred by comparing 1130 bp of the combined data set of chloroplasttrnV intron andpetG-trnP intergenic spacer. The phylogenetic tree shows thatChamaecyparis nootkatensis(Cupressus nootkatensisorXanthocyparis nootkatensis) is clearly diverged from otherChamaecyparisspecies. ForChamaecyparisspecies,C. thyoidesis sister toC. formosensisandC. pisiferaand these together form a monophyletic group.C. lawsonianais sister toC. obtusaandC. taiwanensis; and these form another monophyletic group. Homogeneity in evolutionary rates was found among species in these two monophyletic groups. Results indicate the divergent evolution ofC. taiwanensisandC. formosensisand molecular evidence in this investigation supportsC. taiwanensisas a variety ofC. obtusa. Utility of cpDNA intergenic spacerpetG-trnP inChamaecyparisis also discussed. Several biogeographical implications were inferred: (1) at least two divergence events have produced the eastern Asian, and both western and eastern North American disjunct distribution inChamaecyparis; (2) intercontinental sister species pairs are found inChamaecyparis; (3) cpDNA divergence between two intercontinental sister pairs ofC. thyoidesandC. pisifera,andC. lawsonianaandC. obtusais 2.8% and 1.1%, which suggest an estimated divergence time of 14 and 5.5 million years ago during middle and late Miocene, respectively; (4) cpDNA divergence of two AsianChamaecyparisgroups betweenC. obtusaandC. taiwanensis, and betweenC. pisiferaandC. formosensisis 0.25% and 0.57%, which suggest an estimated divergence time of 1.3 and 2.9 million years ago during Pleistocene and late Pliocene, respectively; these estimated divergence times suggest a relatively recent migration ofChamaecyparisto Taiwan from the Japanese Archipelago; (5) that climatic deterioration caused the disappearance ofChamaecyparisin continental Asia is probable.