Journal ArticleDOI
Molecular Phylogeny of Magnolia (Magnoliaceae) Inferred from cpDNA Sequences and Evolutionary Divergence of the Floral Scents
TLDR
A molecular phylogeny of Magnoliaceae was constructed to reveal phylogenetic relationships of taxa by sequencing the trnK intron, psbA-trnH, and atpB-rbcL intergenic spacer regions of chloroplast DNA from 25 Magnolia, two Michelia, and two Liriodendron taxa.Abstract:
(disjuncts), however, have similar chemical profiles. A molecular phylogeny of Magnoliaceae was constructed to reveal phylogenetic relationships of taxa by sequencing the trnK intron (including the matK coding region), psbA-trnH, and atpB-rbcL intergenic spacer regions of chloroplast DNA from 25 Magnolia, two Michelia, and two Liriodendron taxa. The psbA-trnH spacer region showed twice the sequence divergence (0.0157) of the trnK intron (0.0073) or the matK coding region (0.0077). The strict consensus tree constructed from the combined data set (ca. 3,700 bp) indicated the genus Magnolia was polyphyletic containing Michelia species as ingroup. The clade of Magnolia liliifera var. obovata, M. coco, and M. delavayi formed the first branch. Among the remaining species, two additional large clades were recognized, i.e., one comprised of American evergreen Magnolia species and another of subgenus Yulania. The relationship among sect. Rytidospermum taxa was not clearly resolved. Parsimonious mapping of the floral scent chemical characters was performed onto the molecular phylogenetic tree to discuss evolutionary trends of the floral scent chemistries.read more
Citations
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Journal ArticleDOI
The tortoise and the hare II: relative utility of 21 noncoding chloroplast DNA sequences for phylogenetic analysis
Joey Shaw,Edgar B. Lickey,John T. Beck,Susan B. Farmer,Wusheng Liu,Jermey Miller,Kunsiri Chaw Siripun,Charles Thomas Winder,Edward E. Schilling,Randall L. Small +9 more
TL;DR: The results of this study show that a survey using as few as three representative taxa can be predictive of the amount of phylogenetic information offered by a cpDNA region and that rate heterogeneity exists among noncoding cpDNA regions.
Journal ArticleDOI
Diversity and Distribution of Floral Scent
TL;DR: It is concluded that floral scent chemistry is of little use for phylogenetic estimates above the genus level, whereas the distribution and combinations of floral scent compounds at species and subspecific levels is a promising field of investigation for the understanding of adaptations and evolutionary processes in angiosperms.
Book ChapterDOI
Relationship between Floral Fragrance Composition and Type of Pollinator
TL;DR: A survey of the literature of floral fragrance chemistry in relation to pollinator type can be found in this article, where a tentative effort to uncover possible associations between floral scent and pollinators is made.
Journal ArticleDOI
Phylogenetic relationships in the cactus family (Cactaceae) based on evidence from trnK/ matK and trnL-trnF sequences
TL;DR: Cacti are a large and diverse group of stem succulents predominantly occurring in warm and arid North and South America, and trnL-trnF sequences from members of these clades were added to a combined analysis to improve resolution in three major groups of Cactoideae.
Journal ArticleDOI
Molecular phylogeny of the Magnoliaceae: the biogeography of tropical and temperate disjunctions.
TL;DR: A molecular phylogenetic analysis of the Magnoliaceae, a former boreotropical element that currently contains both tropical and temperate disjuncts, indicates the tropical American section Talauma branched first, followed by the tropical Asian clade and the West Indies clade.
References
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