The evolutionary and biogeographic origin and diversification of the tropical monocot order zingiberales
By J. Kress, Chelsea D. Specht. 2006
83 citations recorded by the source corpus.
Zingiberales are a primarily tropical lineage of monocots. The current pantropical distribution of the order suggests an historical Gondwanan distribution, however the evolutionary history of the group has never been analyzed in a temporal context to test if the order is old enough to attribute its current distribution to vicariance mediated by the break-up of the supercontinent. Based on a phylogeny derived from morphological and molecular characters, we develop a hypothesis for the spatial and temporal evolution of Zingiberales using Dispersal-Vicariance Analysis (DIVA) combined with a local molecular clock technique that enables the simultaneous analysis of multiple gene loci with multiple calibration points. We employ a pairwise relative rates test to assign four rate classes to 24 ingroup and 12 outgroup taxa using evidence from three gene regions (rbcL, atpB, 18S). Five nodes of ingroup and outgroup taxa were calibrated using fossils and previous monocot-wide age estimates. The results are compared with non-parametric rate smoothing and penalized likelihood estimates of temporal diversification. The divergence of Zingiberales from the remaining commelinid monocots is found to have occurred around 124 million years ago, with major family-level lineages becoming established in the late Cretaceous (80-110 mya) and crown lineages within each family beginning to diversify during the early to mid-Tertiary (29-64 mya). Ancestral Gondwanan vicariance combined with a potential Laurasian distribution and multiple secondary dispersal events within families during the Tertiary can explain the main biogeographic events leading to the current pantropical distribution of this tropical order.
Subfields: Forestry, Molecular Biology, Pharmacology
View Paper: https://www.semanticscholar.org/paper/f0c1622efbbc4a3bd8a6363b2cd5bd14a2282743
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Citations in the corpus
- Odd man out: why are there fewer plant species in African rain forests? (2014, background): “…Eurasian Dated phylogeny 1,100 Zerega et al. (2005) Sapindaceae Laurasia ML-DEC 1,900 Buerki et al. (2013) Zingiberaceae Africa/India DIVA 1,300 Kress and Specht (2006) BMM Bayesian binary MCMC model, ML-DEC maximum likelihood dispersal extinction cladogenesis model, BiSSE binary state…”
- Global biogeography and diversification of palms sheds light on the evolution of tropical lineages. I. Historical biogeography (2013, background): “…to the ‘northern mid-latitude megathermal belt’ of Morley (2000, 2003), which is thought to be the putative ancestral area for several other pantropical megathermal clades such as Annonaceae (Couvreur et al., 2011b), Menispermaceae (Wang et al., 2012) and Zingiberales (Kress & Specht, 2006).”