Catalán P, Kellogg E A, Olmstead R G
Department of Agriculture, University of Zaragoza, Zaragoza, Spain.
Mol Phylogenet Evol. 1997 Oct;8(2):150-66. doi: 10.1006/mpev.1997.0416.
Forty-eight representatives of 12 tribes attributed to the subfamily Pooideae s.l. of grasses (Monocots) have been studied by sequencing the more variable 3' end of the chloroplast ndhF gene. Six representatives from 5 different tribes of Poaceae (Oryzeae, Streptogyneae, Bambuseae, Arundineae, Phareae) and from Joinvilleaceae were used as outgroups. Phylogenetic analyses of the data render a monophyletic Pooideae clade and provide an evolutionary hypothesis for all its tribes (Poeae, Aveneae, Bromeae, Triticeae, Brachypodieae, Meliceae, Stipeae, Lygeae, Nardeae, Diarrheneae, Brachyelytreae, Phaenospermatae). The subfamily is composed of two subsets of tribes, a basal group that includes six old lineages or satellite tribes, in which Brachyelytreae is the first diverging branch followed by the Lygeae/Nardeae clade, and a group of six more recently evolved tribes (Pooideae s.s.), in which the divergence of Diarrheneae antedates that of Brachypodieae, sister group to the "core pooids." The character changes found within the sequenced nucleotide positions of the ndhF gene also have proven to be informative at lower hierarchical levels (genus and species) for some tribes.
通过对单子叶植物禾本科早熟禾亚科广义上的12个族的48个代表物种的叶绿体ndhF基因更具变异性的3'端进行测序研究。来自禾本科5个不同族（稻族、链颖族、竹族、芦竹族、小麦族）和沼稻科的6个代表物种用作外类群。对数据进行的系统发育分析得出了一个单系的早熟禾亚科分支，并为其所有族（早熟禾族、燕麦族、雀麦族、小麦族、短柄草族、臭草族、针茅族、黑麦草族、珠芽草族、腹泻草族、短颖草族、显子草族）提供了一个进化假说。该亚科由两个族的子集组成，一个基部类群包括六个古老谱系或卫星族，其中短颖草族是第一个分化分支，其次是黑麦草族/珠芽草族分支，以及一组六个最近进化的族（狭义早熟禾亚科），其中腹泻草族的分化早于短柄草族，短柄草族是“核心早熟禾类群”的姊妹类群。在ndhF基因测序核苷酸位置内发现的性状变化在某些族的较低分类级别（属和种）上也被证明具有信息性。
