The phylogeny of the austral grass subfamily Danthonioideae: Evidence from multiple data sets

被引:17
作者
Barker, N. P. [1 ]
Galley, C.
Verboom, G. A.
Mafa, P.
Gilbert, M.
Linder, H. P.
机构
[1] Rhodes Univ, Dept Bot, Mol Ecol & Systemat Grp, ZA-6140 Grahamstown, South Africa
[2] Inst Systemat Bot, CH-8008 Zurich, Switzerland
[3] Univ Cape Town, Dept Bot, ZA-7925 Cape Town, South Africa
关键词
Danthonioideae; Poaceae; phylogeny; cpDNA; ITS; Internal Transcribed Spacer; Danthonia; Cortaderia; Merxmuellera;
D O I
10.1007/s00606-006-0479-9
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The grass subfamily Danthonioideae is one of the smaller in the family. We utilize DNA sequence data from three chloroplast regions (trnL, rpoC2 and rbcL) and one nuclear region (Internal Transcribed Spacer; ITS) both singly and in combination to elucidate the relationships of the genera in the subfamily. The topology retrieved by the ITS region is not congruent with that of the plastid data, but this conflict is not strongly supported. Nine well-supported clades are retrieved by all data sets. The relationships at the base of the subfamily are clearly established, comprising a series of three clades of Merxmuellera species. The earliest diverging clade probably does not belong in Danthonioideae. The other two clades are centered in the tropical African mountains and Cape mountains respectively. A clade of predominantly North and South American Danthonia species as well as D. archboldii from New Guinea is retrieved, but the African and Asian species of Danthonia are related to African species of Merxmuellera, thus rendering Danthonia polyphyletic. The relationships of the Danthonia clade remain equivocal, as do those of the two Cortaderia clades, the Pseudopentameris and Rytidosperma clades.
引用
收藏
页码:135 / 156
页数:22
相关论文
共 42 条
[1]   Bayes or bootstrap? A simulation study comparing the performance of Bayesian Markov chain Monte Carlo sampling and bootstrapping in assessing phylogenetic confidence [J].
Alfaro, ME ;
Zoller, S ;
Lutzoni, F .
MOLECULAR BIOLOGY AND EVOLUTION, 2003, 20 (02) :255-266
[2]   Ribosomal ITS sequences and plant phylogenetic inference [J].
Alvarez, I ;
Wendel, JF .
MOLECULAR PHYLOGENETICS AND EVOLUTION, 2003, 29 (03) :417-434
[3]  
Baeza-P. C. M., 1996, Sendtnera, V3, P11
[4]   Characterization of angiosperm nrDNA polymorphism, paralogy, and pseudogenes [J].
Bailey, CD ;
Carr, TG ;
Harris, SA ;
Hughes, CE .
MOLECULAR PHYLOGENETICS AND EVOLUTION, 2003, 29 (03) :435-455
[5]  
Barker N. P., 2000, Grasses: systematics and evolution., P221
[6]   POLYPHYLY OF ARUNDINOIDEAE (POACEAE) - EVIDENCE FROM RBCL SEQUENCE DATA [J].
BARKER, NP ;
LINDER, HP ;
HARLEY, EH .
SYSTEMATIC BOTANY, 1995, 20 (04) :423-435
[7]   EXTERNAL FRUIT MORPHOLOGY OF SOUTHERN AFRICAN ARUNDINEAE (ARUNDINOIDEAE, POACEAE) [J].
BARKER, NP .
BOTHALIA, 1994, 24 (01) :55-66
[8]   The paraphyly of Cortaderia (Danthonioideae; Poaceae):: Evidence from morphology and chloroplast and nuclear DNA sequence data [J].
Barker, NP ;
Linder, HP ;
Morton, CM ;
Lyle, M .
ANNALS OF THE MISSOURI BOTANICAL GARDEN, 2003, 90 (01) :1-+
[9]  
Barker NP, 2001, ANN MO BOT GARD, V88, P373, DOI 10.2307/3298585
[10]   Sequences of the grass-specific insert in the chloroplast rpoC2 gene elucidate generic relationships of the Arundinoideae (Poaceae) [J].
Barker, NP ;
Linder, HP ;
Harley, EH .
SYSTEMATIC BOTANY, 1998, 23 (03) :327-350