Phylogenetic relationships in Nicotiana (Solanaceae) inferred from multiple plastid DNA regions
Phylogenetic relationships in Nicotiana (Solanaceae) inferred from multiple plastid DNA regions
复制标题
DOI：
10.1016/j.ympev.2004.05.002
复制
发表时间：
2004-10-01
影响因子：
4.1
通讯作者：
Chase, MW
中科院分区：
文献类型：
--
作者：
Clarkson, JJ;Knapp, S;Chase, MW
对自然存在的75个烟叶种（40个二倍体和35个异源多倍体），我们获得了87份材料和不同外群的4656 bp的质体DNA序列。测序的位点为trnL内含子和trnL- f间隔子、trnS-G间隔子以及ndhF和matK两个基因。简约和贝叶斯分析得出了二倍体的相同关系，这些与其他数据一致，产生了目前最支持的系统发育评估。对于异源多倍体，通过质体树追踪母系遗传线。烟蒂亚纳和澳大利亚特有的部落anthocercidae形成了一对姐妹。Symonanthus是anthocerciae的姐妹。烟叶科。烟叶科是该属其它植物的姐妹。该异源多倍体种的母本是同一种的祖先，但其异源多倍体产生于不同的时期，从而使这些异源多倍体与它们现存的二倍体亲缘有异源性。烟叶可能是在安第斯山脉以东的南美南部进化而来，后来分散到非洲、澳大利亚和北美西南部。(C) 2004爱思唯尔公司版权所有。
For Nicotiana, with 75 naturally occurring species (40 diploids and 35 allopolyploids), we produced 4656 bp of plastid DNA sequence for 87 accessions and various outgroups. The loci sequenced were trnL intron and trnL-F spacer, trnS-G spacer and two genes, ndhF and matK. Parsimony and Bayesian analyses yielded identical relationships for the diploids, and these are consistent with other data, producing the best-supported phylogenetic assessment currently available for the genus. For the allopolyploids, the line of maternal inheritance is traced via the plastid tree. Nicotiana and the Australian endemic tribe Anthocercideae form a sister pair. Symonanthus is sister to the rest of Anthocercideae. Nicotiana sect. Tomentosae is sister to the rest of the genus. The maternal parent of the allopolyploid species of N. sect. Polydicliae were ancestors of the same species, but the allopolyploids were produced at different times, thus making such sections paraphyletic to their extant diploid relatives. Nicotiana is likely to have evolved in southern South America east of the Andes and later dispersed to Africa, Australia, and southwestern North America. (C) 2004 Elsevier Inc. All rights reserved.