Phylogenetic Analysis of Dioecy in Monocotyledons

Weiblen,; Oyama,; Donoghue,

doi:10.2307/3079015

Cited by 31 publications

(41 citation statements)

References 38 publications

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“…This is, to our knowledge, the first study that reports an association between these reproductive systems at such a broad scale; this association is consistent with the gynodioecy pathway (but does not rule out the monoecy pathway; see below). Because we could not use phylogenetic methods to study character evolution, our results may also be explained by the existence of 'hotspots' of unrelated reproductive system transitions (Weiblen et al, 2000). Indeed, factors that favour dioecy, i.e.…”

Section: The Routes To Dioecymentioning

confidence: 90%

“…The approach described above is known to be sensitive to phylogenetic inertia (Weiblen et al, 2000), which has stimulated the development of methods such as Bayestraits, BiSSE and MuSSE for studying character evolution on a phylogeny (Pagel et al, 2004;Pagel and Meade, 2006;Maddison et al, 2007;FitzJohn et al, 2009). Bayestraits, however, assumes equal diversification rates in a phylogenetic tree, an assumption that is very often not fulfilled (Magallon and Sanderson, 2010).…”

Section: Statistical Analysesmentioning

confidence: 99%

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An angiosperm-wide analysis of the gynodioecy–dioecy pathway

Dufaÿ¹,

Champelovier²,

Käfer³

et al. 2014

Annals of Botany

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Aims About 6 % of an estimated total of 240 000 species of angiosperms are dioecious. The main precursors of this sexual system are thought to be monoecy and gynodioecy. A previous angiosperm-wide study revealed that many dioecious species have evolved through the monoecy pathway; some case studies and a large body of theoretical research also provide evidence in support of the gynodioecy pathway. If plants have evolved through the gynodioecy pathway, gynodioecious and dioecious species should co-occur in the same genera. However, to date, no large-scale analysis has been conducted to determine the prevalence of the gynodioecy pathway in angiosperms. In this study, this gap in knowledge was addressed by performing an angiosperm-wide survey in order to test for co-occurrence as evidence of the gynodioecy pathway. † Methods Data from different sources were compiled to obtain (to our knowledge) the largest dataset on gynodioecy available, with 275 genera that include at least one gynodioecious species. This dataset was combined with a dioecy dataset from the literature, and a study was made of how often dioecious and gynodioecious species could be found in the same genera using a contingency table framework. † Key Results It was found that, overall, angiosperm genera with both gynodioecious and dioecious species occur more frequently than expected, in agreement with the gynodioecy pathway. Importantly, this trend holds when studying different classes separately (or sub-classes, orders and families), suggesting that the gynodioecy pathway is not restricted to a few taxa but may instead be widespread in angiosperms. † Conclusions This work complements that previously carried out on the monoecy pathway and suggests that gynodioecy is also a common pathway in angiosperms. The results also identify angiosperm families where some (or all) dioecious species may have evolved from gynodioecious precursors. These families could be the targets of future small-scale studies on transitions to dioecy taking phylogeny explicitly into account.

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Section: The Routes To Dioecymentioning

confidence: 90%

Section: Statistical Analysesmentioning

confidence: 99%

An angiosperm-wide analysis of the gynodioecy–dioecy pathway

Dufaÿ¹,

Champelovier²,

Käfer³

et al. 2014

Annals of Botany

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“…Modular, colonial organisms are unusual because the "organism" is comprised of many replicated, interdependent modules, each with its own birth and death rates, complicating analyses of life-history patterns. Modularity can potentially lead to a diverse array of sexual systems (Weiblen et al 2000). However, unlike flowering plants (Barrett 1998) and some unitary animals (Francis 1992), there are essentially only two sexual systems in scleractinians.…”

Section: Systematic Patterns In Reproductive Biology Of Scleractinianmentioning

confidence: 99%

Systematic and Biogeographical Patterns in the Reproductive Biology of Scleractinian Corals

Baird

Guest

Willis

2009

Annu. Rev. Ecol. Evol. Syst.

649

653

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A limited diversity of character states for reproductive traits and a robust phylogeny make scleractinian corals an ideal model organism with which to explore the evolution of life-history traits. Here, we explore systematic and biogeographical patterns in the reproductive biology of the Scleractinia within the context of a new molecular phylogeny and using reproductive traits from nearly 400 species. Our analyses confirm that coral sexuality is highly conserved, and mode of larval development is relatively plastic. An overabundance of species with autotrophic larvae in the eastern Pacific and Atlantic is most likely the result of increased capacity for long-distance dispersal conferred by vertical transmission of symbiotic zooxanthellae. Spawning records from diverse biogeographical regions indicate that multispecies spawning occurs in all speciose coral assemblages. A new quantitative index of spawning synchrony shows peaks at mid-tropical latitudes in the IndoPacific, influenced in part by two spawning seasons in many species on equatorial reefs.

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“…An approach that has been employed (e.g., Weiblen et al 2000, 2006, Ree and Donoghue 1999, Beaulieu et al 2007, Novotny et al 2010) is simply to piece together, by hand, trees from the ''best'' studies in the literature. This is effectively the approach that underlies the Tree of Life Web Project Maddison 1996, Maddison andSchulz 2007), and, for plants, Phylomatic (Webb and Donoghue 2005), as well as the APWeb (Stevens 2011).…”

Section: Introductionmentioning

confidence: 99%

Synthesizing phylogenetic knowledge for ecological research

Beaulieu

Ree

Cavender‐Bares

et al. 2012

Ecology

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Abstract. The demand for knowledge about the tree of life is steadily rising in ecology and other fields, but bioinformatic resources designed to meet these needs remain poorly developed. Ecologists pursuing phylogenetic insights into the organization of communities have come to rely on relatively conservative reference trees that, in general, are poorly resolved and documented. New methods for inferring very large trees by mining data from DNA sequence repositories will undoubtedly be useful in community phylogenetics but are not without limitations. Here we argue that the collective phylogenetic knowledge embodied in the literature of systematics is a valuable resource that can be tapped in assembling synthetic trees. Assembling a composite ''literature-based'' tree by the judicious grafting of clades is one way to achieve a synthesis of current knowledge, and could, under some circumstances, better represent ''what we know'' about phylogenetic relationships than results obtained from automated pipelines. We describe an approach and new software for storing and annotating trees from published studies and grafting clades together in a documented and repeatable manner. Using this agglomerative approach, we are in the process of assembling a literaturebased tree for land plants, which presently contains 14 423 species from over 259 sources. For this strategy to be maximally effective, improvements in digital infrastructure are needed to capture and deploy advances in phylogenetic knowledge as they are published.

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Phylogenetic Analysis of Dioecy in Monocotyledons

Cited by 31 publications

References 38 publications

An angiosperm-wide analysis of the gynodioecy–dioecy pathway

An angiosperm-wide analysis of the gynodioecy–dioecy pathway

Systematic and Biogeographical Patterns in the Reproductive Biology of Scleractinian Corals

Synthesizing phylogenetic knowledge for ecological research

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