Arid
DOI10.1002/tax.603004
Phylogenetic relationships and morphological diversity in Neotropical Heliotropium (Heliotropiaceae)
Luebert, Federico1,2; Brokamp, Grischa1; Wen, Jun3; Weigend, Maximilian1; Hilger, Hartmut H.1
通讯作者Luebert, Federico
来源期刊TAXON
ISSN0040-0262
EISSN1996-8175
出版年2011
卷号60期号:3页码:663-680
英文摘要

Little is known about vegetative morphological diversification in Neotropical plant clades in comparison with diversification of reproductive characters. Phylogenetic relationships of the Neotropical Heliotropium (Heliotropiaceae) were studied using sequences of nrITS and four plastid regions (trnL-trnF, trnS-trnG, trnH-psbA, rps16). Vegetative morphological diversity (leaf morphology, habit), measured as amount of morphospace occupied and as variance of individual characters, was compared among the clades resolved and between groups of species inhabiting dry and humid areas. Three well-supported clades were recovered: (1) Heliotropium sect. Heliothamnus from the tropical Andes; (2)Heliotropium sect. Cochranea from the Peruvian and the Atacama Deserts; and (3) the Tournefortia clade, comprising the remaining American sections of Heliotropium and the mainly Neotropical Tournefortia sect. Tournefortia. Phylogenetic discordance detected between the plastid and nuclear partitions may have been due to lineage sorting, hybridization or differences in number of informative sites. Morphological diversity was largest in the Tournefortia clade and tended to be greater in dry than in humid areas, but without statistical support. Heliotropium sect. Cochranea was as diverse as the Tournefortia clade in leaf morphology and may have experienced adaptive radiation in the Atacama Desert. Lowest vegetative diversity was found in Heliotropium sect. Heliothamnus. The infrageneric delimitation in Heliotropium needs reassessment.


英文关键词Andes Boraginaceae Boraginales Heliotropiaceae Heliotropium morphological diversity
类型Article
语种英语
国家Germany ; Chile ; USA
收录类别SCI-E
WOS记录号WOS:000292070800004
WOS关键词DNA-SEQUENCES ; DIVERSIFICATION ; EVOLUTION ; CHLOROPLAST ; RATES ; BORAGINACEAE ; TOURNEFORTIA ; PATTERNS ; TREES ; AMPLIFICATION
WOS类目Plant Sciences ; Evolutionary Biology
WOS研究方向Plant Sciences ; Evolutionary Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/170675
作者单位1.Free Univ Berlin, Inst Biol Bot, D-14195 Berlin, Germany;
2.Univ Chile, Fac Ciencias Forestales, Dept Silvicultura, Santiago, Chile;
3.Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, Washington, DC 20013 USA
推荐引用方式
GB/T 7714
Luebert, Federico,Brokamp, Grischa,Wen, Jun,et al. Phylogenetic relationships and morphological diversity in Neotropical Heliotropium (Heliotropiaceae)[J],2011,60(3):663-680.
APA Luebert, Federico,Brokamp, Grischa,Wen, Jun,Weigend, Maximilian,&Hilger, Hartmut H..(2011).Phylogenetic relationships and morphological diversity in Neotropical Heliotropium (Heliotropiaceae).TAXON,60(3),663-680.
MLA Luebert, Federico,et al."Phylogenetic relationships and morphological diversity in Neotropical Heliotropium (Heliotropiaceae)".TAXON 60.3(2011):663-680.
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