Large multi-gene phylogenetic trees of the grasses (Poaceae): Progress towards complete tribal and generic level sampling
Large multi-gene phylogenetic trees of the grasses (Poaceae): Progress towards complete tribal and generic level sampling
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DOI：
10.1016/j.ympev.2008.01.035
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发表时间：
2008-05-01
影响因子：
4.1
通讯作者：
Hodkinson, Trevor R.
中科院分区：
文献类型：
--
作者：
Bouchenak-Khelladi, Yanis;Salamin, Nicolas;Hodkinson, Trevor R.
在本文中，我们涵盖了禾本科多样性的广泛代表（84%的族和42%的属）。系统发育推断基于三个叶绿体DNA区域rbcL、matK和trnL - F，采用最大简约法和贝叶斯方法。我们的结果解决了主要分支（BEP和PACCMAD）内大部分的亚科关系，这些关系之前并不明确，例如：（i）BEP和PACCMAD的姐妹群关系；（ii）分支的组成以及稻亚科与竹亚科 + 早熟禾亚科的姐妹群关系；（iii）竹族的并系性；（iv）芦苇属作为黍亚科姐妹群的位置；（v）微须芒草亚科的系统发育位置。由于存在相对大量的缺失数据，我们能够在分析中将分类群取样从107个大幅增加到295个。然而，在涉及缺失数据的分析中，自展支持率以及在较小程度上贝叶斯推断后验概率通常比不涉及缺失数据的分析要低。我们构建了一个在亚科水平上完全解析的禾本科系统发育汇总树，并指出了我们分析中所有包含的族最有可能的关系。（c）2008爱思唯尔公司。保留所有权利。
In this paper we included a very broad representation of grass family diversity (84% of tribes and 42% of genera). Phylogenetic inference was based on three plastid DNA regions rbcL, matK and trnL-F, using maximum parsimony and Bayesian methods. Our results resolved most of the subfamily relationships within the major clades (BEP and PACCMAD), which had previously been unclear, such as, among others the: (i) BEP and PACCMAD sister relationship, (ii) composition of clades and the sister-relationship of Ehrhartoideae and Bambusoideae + Pooideae, (iii) paraphyly of tribe Bambuseae, (iv) position of Gynerium as sister to Panicoideae, (v) phylogenetic position of Micrairoideae. With the presence of a relatively large amount of missing data, we were able to increase taxon sampling substantially in our analyses from 107 to 295 taxa. However, bootstrap support and to a lesser extent Bayesian inference posterior probabilities were generally lower in analyses involving missing data than those not including them. We produced a fully resolved phylogenetic summary tree for the grass family at subfamily level and indicated the most likely relationships of all included tribes in our analysis. (c) 2008 Elsevier Inc. All rights reserved.