NDLI: Impact of missing data, gene choice, and taxon sampling on phylogenetic reconstruction: the Caryophyllales (angiosperms)

Content Provider	Springer Nature Link
Author	Crawley, S. S. Hilu, K. W.
Copyright Year	2011
Abstract	Density of taxon sampling and number/kind of characters are central to achieving the ultimate goals in phylogenetic reconstruction: tree robustness and improved accuracy. In molecular phylogenetics, DNA sequence repositories such as GenBank are potential sources for expanding datasets in two dimensions, taxa and characters, to the level of “supermatrices.” However, the issue of missing characters/genomic regions is generally considered a major impediment to this endeavor. We used here the angiosperm order Caryophyllales to systematically address the impact of missing data when expanding taxon sampling and number of characters in phylogenetic reconstruction. Our analyses show that expansion of taxon sampling by ~13-fold resulted in improved phylogenetic assessment of the Caryophyllales despite up to 38% missing data. Expanding number of characters in the dataset by allowing for up to 100-fold increase in amount of missing data and inclusion of entries with about 40% missing genomic regions did not negatively impact tree structure or robustness, but to the contrary improved both. These results are timely regarding the ongoing efforts to achieve detailed assessment of the tree of life.
Starting Page	297
Ending Page	312
Page Count	16
File Format	PDF
ISSN	03782697
Journal	Plant Systematics and Evolution
Volume Number	298
Issue Number	2
e-ISSN	16156110
Language	English
Publisher	Springer Vienna
Publisher Date	2011-11-10
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Caryophyllales Angiosperm Missing data Taxon sampling Phylogenetics Plant Systematics/Taxonomy/Biogeography Plant Anatomy/Development Plant Sciences Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science Ecology, Evolution, Behavior and Systematics

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