Phylogenetic placements of Calathodes and Megaleranthis (Ranunculaceae): Evidence from molecular and morphological data

Phylogenetic placements of Calathodes and Megaleranthis (Ranunculaceae): Evidence from molecular and morphological data
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Calathodes 和 Megaleranthis(毛茛科)的系统发育位置:来自分子和形态学数据的证据

DOI:
10.1002/tax.596006
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发表时间:
2010-12
期刊:
影响因子:
3.4
通讯作者:
--
中科院分区:
生物学2区
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--
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Calathodes 和 Megaleranthis 是毛茛科的两个东亚特有属,其部落地位和/或分类地位存在争议。在本研究中,我们利用matK序列确定了Calathodes和Megaleranthis在科内的部落位置,并使用三个分子位点(matK、trnL-F、ITS)和形态学数据来进一步阐明它们的系统发育关系和分类地位。所有分析都表明,Calathodes 和 Megaleranthis 属于 Adonideae 族,并且 Calathodes 是单系的,并且与金莲花密切相关。后两个属的根茎不发达,花粉粒外壁有条纹,但花瓣、蓇葖果、花托、花粉粒和染色体有显着差异。金莲花包含两个具有不同地理分布的主要分支。 Megaleranthis 嵌入在进化枝 I 中,是金莲花的姐妹,它与巨瓣金莲花共享果实,具有长喙,并且在 trnL-F 数据集中有 7 bp 缺失。金龟亚科被重新划定为由三个属组成:Adonis、Calathodes 和 Trollius。该部落缺乏形态学共谱。
Calathodes and Megaleranthis are two eastern Asian endemic genera of Ranunculaceae with controversial tribal position and/or taxonomic status. In this study, we used matK sequences to determine the tribal position of Calathodes and Megaleranthis within the family, and three molecular loci (matK, trnL-F, ITS) and morphological data to further clarify their phylogenetic relationships and taxonomic status. All analyses show that Calathodes and Megaleranthis belong in the tribe Adonideae, and that Calathodes is monophyletic and closely related to Trollius. The latter two genera share rhizomes not well developed and pollen grains with striate exine ornamentation, but markedly differ in petals, follicles, receptacles, pollen grains, and chromosomes. Trollius contains two major clades with different geographical distributions. Megaleranthis is embedded in clade I and sister to Trollius macropetalus, with which it shares fruits with long beaks and a 7 bp deletion in the trnL-F dataset. Adonideae are redelimited as consisting of three genera, Adonis, Calathodes and Trollius. Morphological synapomorphies for the tribe are lacking.
DOI: 10.11110/kjpt.1985.15.3.127
发表时间: 1985-12
期刊: --
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期刊: SYSTEMATIC BOTANY
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