Assembling The Tree Of The Monocotyledons: Plastome Sequence Phylogeny And Evolution Of Poales

Title:
Assembling The Tree Of The Monocotyledons: Plastome Sequence Phylogeny And Evolution Of Poales
Authors:
Givnish, Thomas J.; Ames, Mercedes; McNeal, Joel R.; McKain, Michael R.; Steele, P. Roxanne; dePamphilis, Claude W.; Graham, Sean W.; Pires, J. Chris; Stevenson, Dennis W.; Zomlefer, Wendy B.; Briggs, Barbara G.; Duvall, Melvin R.; Moore, Michael J.; Heaney, J. Michael; Soltis, Douglas E.; Soltis, Pamela S.; Thiele, Kevin; Lebens-Mack, James H.
Abstract:
The order Poales comprises a substantial portion of plant life (7% of all angiosperms and 33% of monocots) and includes taxa of enormous economic and ecological significance. Molecular and morphological studies over the past two decades, however, leave uncertain many relationships within Proles and among allied commelinid orders. Here we present the results of an initial Project by the Monocot AToL (Angiosperm Tree of Life) team on phylogeny and evolution in Poales, using sequence data for 81 plastid genes (exceeding 101 aligned kb) from 83 species of angiosperms. We recovered highly concordant relationships using maximum likelihood (ML) and maximum parsimony (MP), with 98.2% mean ML bootstrap support across monocots. For the first time, ML, resolves ties among Poales and other commelinid orders with moderate to strong support. Analyses provide strong support for Bromeliaceae being sister to the rest of Poales; Typhaceae, Rapateaceae, and cyperids (sedges, rushes, and their allies) emerge next along the phylogenetic, spine. Graminids (grasses and their allies) and restiids (Restionaceae and its allies) are well supported as sister taxa. MP identifies a xyrid clade (Eriocaulaceae, Mayacaceae, Xyridaceae) sister to cyperids, but ML (with much stronger support) places them as a grade with respect to restiids + graminids. The conflict in resolution between these analyses likely reflects long-branch attraction and highly elevated substitution rates in some Poales. All other familial relationships within the order are strongly supported by both MP and ML analyses. Character-state mapping implies that ancestral Poales lived in sunny, fire-prone, at least seasonally damp/wet, and possibly nutrient-poor sites, and were animal pollinated. Five subsequent shifts to wind pollination-in Typhaceae, cyperids, restiids, Ecdeiocoleaceae, and the vast PACCMAD-BEP clade of grasses-are significantly correlated with shifts to open habitats and small, inconspicuous, unisexual, and nectar-free flowers. Prime ecological movers driving the repeated evolution of wind pollination in Poales appear to include open habitats combined with the high local dominance of conspecific taxa, with the latter resulting from large-scale disturbances, combined with tall plant stature, vigorous vegetative spread, and positive, ecological feedback. Reproductive assurance in the absence of reliable animal visitation probably favored wind pollination in annuals and short-statured perennials of Centrolepidaceae in ephemerally wet depressions and windswept alpine sites.
Citation:
Givnish, Thomas J., Mercedes Ames, Joel R. McNeal, Michael R. McKain, et al. 2010. "Assembling The Tree Of The Monocotyledons: Plastome Sequence Phylogeny And Evolution Of Poales." Annals Of The Missouri Botanical Garden 97(4): 584-616.
Publisher:
Missouri Botanical Garden
DATE ISSUED:
2010
Department:
Biology
Type:
article
PUBLISHED VERSION:
10.3417/2010023
PERMANENT LINK:
http://hdl.handle.net/11282/309924

Full metadata record

DC FieldValue Language
dc.contributor.authorGivnish, Thomas J.en_US
dc.contributor.authorAmes, Mercedesen_US
dc.contributor.authorMcNeal, Joel R.en_US
dc.contributor.authorMcKain, Michael R.en_US
dc.contributor.authorSteele, P. Roxanneen_US
dc.contributor.authordePamphilis, Claude W.en_US
dc.contributor.authorGraham, Sean W.en_US
dc.contributor.authorPires, J. Chrisen_US
dc.contributor.authorStevenson, Dennis W.en_US
dc.contributor.authorZomlefer, Wendy B.en_US
dc.contributor.authorBriggs, Barbara G.en_US
dc.contributor.authorDuvall, Melvin R.en_US
dc.contributor.authorMoore, Michael J.en_US
dc.contributor.authorHeaney, J. Michaelen_US
dc.contributor.authorSoltis, Douglas E.en_US
dc.contributor.authorSoltis, Pamela S.en_US
dc.contributor.authorThiele, Kevinen_US
dc.contributor.authorLebens-Mack, James H.en_US
dc.date.accessioned2013-12-23T16:21:07Z-
dc.date.available2013-12-23T16:21:07Z-
dc.date.issued2010en
dc.identifier.citationGivnish, Thomas J., Mercedes Ames, Joel R. McNeal, Michael R. McKain, et al. 2010. "Assembling The Tree Of The Monocotyledons: Plastome Sequence Phylogeny And Evolution Of Poales." Annals Of The Missouri Botanical Garden 97(4): 584-616.en_US
dc.identifier.issn0026-6493en_US
dc.identifier.urihttp://hdl.handle.net/11282/309924-
dc.description.abstractThe order Poales comprises a substantial portion of plant life (7% of all angiosperms and 33% of monocots) and includes taxa of enormous economic and ecological significance. Molecular and morphological studies over the past two decades, however, leave uncertain many relationships within Proles and among allied commelinid orders. Here we present the results of an initial Project by the Monocot AToL (Angiosperm Tree of Life) team on phylogeny and evolution in Poales, using sequence data for 81 plastid genes (exceeding 101 aligned kb) from 83 species of angiosperms. We recovered highly concordant relationships using maximum likelihood (ML) and maximum parsimony (MP), with 98.2% mean ML bootstrap support across monocots. For the first time, ML, resolves ties among Poales and other commelinid orders with moderate to strong support. Analyses provide strong support for Bromeliaceae being sister to the rest of Poales; Typhaceae, Rapateaceae, and cyperids (sedges, rushes, and their allies) emerge next along the phylogenetic, spine. Graminids (grasses and their allies) and restiids (Restionaceae and its allies) are well supported as sister taxa. MP identifies a xyrid clade (Eriocaulaceae, Mayacaceae, Xyridaceae) sister to cyperids, but ML (with much stronger support) places them as a grade with respect to restiids + graminids. The conflict in resolution between these analyses likely reflects long-branch attraction and highly elevated substitution rates in some Poales. All other familial relationships within the order are strongly supported by both MP and ML analyses. Character-state mapping implies that ancestral Poales lived in sunny, fire-prone, at least seasonally damp/wet, and possibly nutrient-poor sites, and were animal pollinated. Five subsequent shifts to wind pollination-in Typhaceae, cyperids, restiids, Ecdeiocoleaceae, and the vast PACCMAD-BEP clade of grasses-are significantly correlated with shifts to open habitats and small, inconspicuous, unisexual, and nectar-free flowers. Prime ecological movers driving the repeated evolution of wind pollination in Poales appear to include open habitats combined with the high local dominance of conspecific taxa, with the latter resulting from large-scale disturbances, combined with tall plant stature, vigorous vegetative spread, and positive, ecological feedback. Reproductive assurance in the absence of reliable animal visitation probably favored wind pollination in annuals and short-statured perennials of Centrolepidaceae in ephemerally wet depressions and windswept alpine sites.en_US
dc.language.isoen_USen_US
dc.publisherMissouri Botanical Gardenen_US
dc.identifier.doi10.3417/2010023-
dc.subject.departmentBiologyen_US
dc.titleAssembling The Tree Of The Monocotyledons: Plastome Sequence Phylogeny And Evolution Of Poalesen_US
dc.typearticleen_US
dc.identifier.journalAnnals Of The Missouri Botanical Gardenen_US
dc.subject.keywordCommelinidsen_US
dc.subject.keywordCorrelated evolutionen_US
dc.subject.keywordCyperidsen_US
dc.subject.keywordGraminidsen_US
dc.subject.keywordLong-branch attractionen_US
dc.subject.keywordMolecular systematicsen_US
dc.subject.keywordPlastiden_US
dc.subject.keywordPlastomeen_US
dc.subject.keywordRestiidsen_US
dc.subject.keywordXyridsen_US
dc.subject.keywordMonocotsen_US
dc.identifier.volume97en_US
dc.identifier.issue4en_US
dc.identifier.startpage584en_US
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