Time, Place, and Relationships: Cycad Phenology in a Phylogenetic and Biogeographic Context

Griffith, M. Patrick; Calornje, M. A.; Stevenson, D. W.; Husby, Chad E.; Little, Damon P.; Osborne, R.; Blake, A. S. Taylor

doi:10.21135/893275150.006

Cited by 12 publications

(18 citation statements)

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“…tree of Chaw et al (2005) and the combined analysis of Griffith et al (2012), but with improved support values. Several morphological synapomorphies support the clades recovered in our study.…”

Section: Global Eventsmentioning

confidence: 99%

“…Phylogenies based on morphology, ITS sequences or several plastid regions yielded incongruent results for these three genera (e.g. Stevenson, 1990Stevenson, , 1992Hill et al, 2003;Rai et al, 2003;Bogler and Francisco-Ortega, 2004;Chaw et al, 2005;Zgurski et al, 2008;Nagalingum et al, 2011;Griffith et al, 2012). However, all of these phylogenetic studies provided strong support for: (1) Cycas as sister to the rest of the Cycadales; (2) Encephalartos, Lepidozamia and Macrozamia forming a monophyletic group; and (3) Microcycas and Zamia (including Chigua) as a distinct clade (Figs 1 and 2).…”

Section: Introductionmentioning

confidence: 99%

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Phylogeny of the cycads based on multiple single-copy nuclear genes: congruence of concatenated parsimony, likelihood and species tree inference methods

et al. 2013

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A single, well-supported phylogenetic hypothesis of the generic relationships of the Cycadales is presented. However, massive extinction events inferred from the fossil record that eliminated broader ancestral distributions within Zamiaceae compromise accurate optimization of ancestral biogeographical areas for that hypothesis. While major lineages of Cycadales are ancient, crown ages of all modern genera are no older than 12 million years, supporting a recent hypothesis of mostly Miocene radiations. This phylogeny can contribute to an accurate infrafamilial classification of Zamiaceae.

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Section: Global Eventsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phylogeny of the cycads based on multiple single-copy nuclear genes: congruence of concatenated parsimony, likelihood and species tree inference methods

et al. 2013

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“…Although this occurs only when the host populations overlap or are geographically close, in all cases the seasonal coning phenology of the host species overlaps (Jones et al, 2001;Terry et al, 2008;Terry et al, 2004), unlike that of some cycad species (Griffith et al, 2012). How then do these cycad species persist when they share a pollinator, and how have these host associations arisen?…”

Section: Species Diversity and Host Relationshipsmentioning

confidence: 99%

Evolutionary dynamics of a cycad obligate pollination mutualism – Pattern and process in extant Macrozamia cycads and their specialist thrips pollinators

Brookes

Hereward

Terry

et al. 2015

Molecular Phylogenetics and Evolution

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“…; Griffith et al . ). Additionally, intrageneric relationships for most genera are not fully resolved (Caputo et al .…”

Section: Introductionmentioning

confidence: 97%

Conserved genetic regions across angiosperms as tools to develop single‐copy nuclear markers in gymnosperms: an example using cycads

Salas‐Leiva

Meerow

Francisco‐Ortega

et al. 2014

Molecular Ecology Resources

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Several individuals of the Caribbean Zamia clade and other cycad genera were used to identify single-copy nuclear genes for phylogeographic and phylogenetic studies in Cycadales. Two strategies were employed to select target loci: (i) a tblastX search of Arabidopsis conserved ortholog sequence (COS) set and (ii) a tblastX search of Arabidopsis-Populus-Vitis-Oryza Shared Single-Copy genes (APVO SSC) against the EST Zamia databases in GenBank. From the first strategy, 30 loci were selected, and from the second, 16 loci. In both cases, the matching GenBank accessions of Zamia were used as a query for retrieving highly similar sequences from Cycas, Picea, Pinus species or Ginkgo biloba. After retrieving and aligning all the sequences in each locus, intron predictions were completed to assist in primer design. PCR was carried out in three rounds to detect paralogous loci. A total of 29 loci were successfully amplified as a single band of which 20 were likely single-copy loci. These loci showed different diversity and divergence levels. A preliminary screening allowed us to select 8 promising loci (40S, ATG2, BG, GroES, GTP, LiSH, PEX4 and TR) for the Zamia pumila complex and 4 loci (COS26, GroES, GTP and HTS) for all other cycad genera.

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Time, Place, and Relationships: Cycad Phenology in a Phylogenetic and Biogeographic Context

Cited by 12 publications

References 0 publications

Phylogeny of the cycads based on multiple single-copy nuclear genes: congruence of concatenated parsimony, likelihood and species tree inference methods

Phylogeny of the cycads based on multiple single-copy nuclear genes: congruence of concatenated parsimony, likelihood and species tree inference methods

Evolutionary dynamics of a cycad obligate pollination mutualism – Pattern and process in extant Macrozamia cycads and their specialist thrips pollinators

Conserved genetic regions across angiosperms as tools to develop single‐copy nuclear markers in gymnosperms: an example using cycads

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