Phylogenetic Relationships of Pinus Subsection Ponderosae Inferred from Rapidly Evolving cpDNA Regions
Phylogenetic Relationships of Pinus Subsection Ponderosae Inferred from Rapidly Evolving cpDNA Regions
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DOI：
10.1600/036364409789271290
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发表时间：
2009-07-01
影响因子：
1
通讯作者：
Perez de la Rosa, Jorge A.
中科院分区：
文献类型：
--
作者：
Gernandt, David S.;Hernandez-Leon, Sergio;Perez de la Rosa, Jorge A.
松亚组Ponderosae包括大约17个树种分布从加拿大西部到尼加拉瓜。我们从3.7 kb的cpDNA序列（matK，trnD-trnY-trnE间隔区，chlN-ycf 1间隔区和ycf 1）推断了所有广泛认可的物种的多个加入的系统发育关系。亚组Ponderosae和Australes之间的姐妹关系得到证实，高分支支持，和几个分支，大多数较低的分支支持，被确定在亚组Ponderosae。杰氏松是库尔特松、萨比尼亚松和托瑞亚纳松的姐妹。加州的P. ponderosa和P. washoensis出现在一个分支中，与美国西南部的P. arizonica和P. scopulorum分开。墨西哥西部物种P. cooperi和P. durangensis的cpDNA序列与P. arizonica和P. scopulorum的一个或多个加入物相同，并且这些分类群一起与P. engelntanni-P. devoniana（墨西哥）和P. douglasiana-P. yecorensis-P. maximinoi（墨西哥西部到危地马拉）的分支密切相关。来自墨西哥和中美洲的分类群的一个支持很好的分支包括P. pseudostrobus，P. montezumae，P. hartweetheus，P. maximinoi（三个加入之一），P. nubicola和P. donnell-smithii。大多数物种的叶绿体DNA序列是nonmonophyletic，虽然支持的程度各不相同。
Pinus subsection Ponderosae includes approximately 17 tree species distributed from western Canada to Nicaragua. We inferred phylogenetic relationships of multiple accessions for all widely recognized species from 3.7 kb of cpDNA sequence (matK, trnD-trnY-trnE spacer, chlN-ycf1 spacer, and ycf1). The sister relationship between subsections Ponderosae and Australes was corroborated with high branch support, and several clades, most with lower branch support, were identified within subsection Ponderosae. Pinus jeffreyi was sister to P. coulteri, P. sabiniana, and P. torreyana. Californian accessions of P. ponderosa and P. washoensis occurred in a clade separate from P. arizonica and P. scopulorum from the southwestern United States. Western Mexican species P. cooperi and P. durangensis had cpDNA sequences identical to one or more accessions of P. arizonica and P. scopulorum, and together these taxa were closely related to clades of P. engelntannii-P. devoniana (Mexico) and P. douglasiana-P. yecorensis-P. maximinoi (western Mexico to Guatemala). A well supported clade of taxa from Mexico and Central America included P. pseudostrobus, P. montezumae, P. hartwegii, P. maximinoi (one of three accessions), P. nubicola, and P. donnell-smithii. Chloroplast DNA sequences were nonmonophyletic for most species, although the degree of support varied.