First occurrence of Platycladus from the upper Miocene of Southwest China and its phytogeographic implications.
First occurrence of Platycladus from the upper Miocene of Southwest China and its phytogeographic implications.
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中国西南上中新世侧柏树的首次出现及其植物地理意义
DOI：
10.1371/journal.pone.0115141
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Sun BN
中科院分区：
文献类型：
--
作者：
Wu JY;Ding ST;Li QJ;Zhao ZR;Sun BN
侧柏原产于华中地区，但其自然分布很难确定。根据分子系统学数据，该属可能起源于渐新世，但没有化石记录。本文描述了产于云南西部晚中新世的8个叶枝化石，命名为云南叶枝（P.yunnanensissp. nov.）其特征是：叶枝呈扁平状，叶交互对生，覆瓦状，鳞片状，二型。叶为双气孔，气孔椭圆形或长圆形，单唇，单环型。通过与现存广义柏科（Cupressaceae sensu lato）属的详细比较，将该化石归属于侧柏属（Platycladus）。云南松P. yunnanensis sp. nov.的发现表明该属在中新世晚期的自然分布比现在更偏南。分子生物学和化石记录支持一个前渐新世的共同祖先的属Platycladus，Microbiota和Calocedrus。这三个类群的分离很可能是由渐新世中国中部干旱带造成的。此外，中新世以来全球气温的降低和亚洲季风的加强，将进一步促进这些属的迁徙。
Platycladus Spach is native to Central China, but its natural occurrences are very difficult to establish. According to molecular phylogenetic data, this genus might have originated since the Oligocene, but no fossil record has been reported. Here, we describe eight foliage branches from the upper Miocene in western Yunnan, Southwest China as a new species, P. yunnanensis sp. nov., which is characterized by foliage branches spread in flattened sprays, and leaves decussate, imbricate, scale-like and dimorphic. The leaves are amphistomatic, and the stomata are elliptical or oblong, haplocheilic, and monocyclic type. Based on a detailed comparison with the extant genera of Cupressaceae sensu lato, our fossils are classified into the genus Platycladus. The occurrence of P. yunnanensis sp. nov. indicates that this genus had a more southernly natural distribution in the late Miocene than at present. Molecular phylogeny and fossil records support a pre-Oligocene common ancestor for the genera Platycladus, Microbiota and Calocedrus. The separation of the three taxa was most likely caused by the arid belt across Central China during the Oligocene. In addition, the cooling down of the global temperature and the strengthening of Asian monsoon since the Miocene will further promote the migration of these genera.
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现存柏科植物的分布反映了盘古大陆的分裂
DOI：
10.1073/pnas.1114319109
发表时间：
2012-05-15
影响因子：
11.1
作者：
Mao, Kangshan;Milne, Richard I.;Renner, Susanne S.
通讯作者：
Renner, Susanne S.
影响因子：
2.3
作者：
Kvacek, Z;Manchester, SR;Schorn, HE
通讯作者：
Schorn, HE
华南渐新世新的柏柏属植物及其对跨太平洋植物区系交流的影响
影响因子：
3
作者：
Shi, Gongle;Zhou, Zhiyan;Xie, Zhiming
通讯作者：
Xie, Zhiming
影响因子：
3.7
作者：
Chang E;Shi S;Liu J;Cheng T;Xue L;Yang X;Yang W;Lan Q;Jiang Z
通讯作者：
Jiang Z
影响因子：
18.3
作者：
Clift, Peter D.;Hodges, Kip V.;Calves, Gerome
通讯作者：
Calves, Gerome