Evolution in Aeschynanthus (Gesneriaceae) inferred from ITS sequences

Denduangboripant, Jessada; Mendum, M.; Cronk, Quentin

doi:10.1007/s006060170028

Cited by 25 publications

(19 citation statements)

References 16 publications

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“…Several authors have provided anecdotal hypotheses of dispersal mechanisms in different lineages in the family. In the Old World, Burtt (1970Burtt ( , 1976, Carlquist (1970), Sakai et al (1995), Denduangboripant and Cronk (2000), Denduangboripant et al (2001), Mendum et al (2001), Kiehn (2001), Price and Wagner (2004), and Cronk et al (2005) have discussed dispersal mechanisms primarily in regard to interisland dispersal of Aeschynanthus and Cyrtandra among southeast Asian and Pacific island landmasses. They particularly note that the coma of filiform appendages in some Aeschynanthus and the white fleshy fruits of the Pacific island lineages of Cyrtandra might play roles in their success in dispersal through wind and putative bird endozoochory, respectively.…”

Section: And Bayesian Inference Analyses Of Gloxinieae Relationshimentioning

confidence: 98%

“…To date, only Old World members of the family have been discussed in this context (Möller and Cronk 1997;Burtt 1998;Denduangboripant and Cronk 2000;Atkins et al 2001;Denduangboripant et al 2001;Mendum et al 2001;Möller and Cronk 2001). As with many tropical groups, neotropical gesneriads are very poorly understood with regards to biogeographic history, with effectively no studies exploring potential explanations of distribution patterns in the family in the New World.…”

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confidence: 97%

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Untangling Gloxinieae (Gesneriaceae). II. Reconstructing Biogeographic Patterns and Estimating Divergence Times Among New World Continental and Island Lineages

2008

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Gesneriaceae tribe Gloxinieae is a diverse clade of approximately 19 genera and 215 species. As with many tropical lineages, patterns and timing of diversification are poorly understood. This is a particular difficulty in groups such as the Gesneriaceae that have no fossil record. Here we explore maximum likelihood and Bayesian inference of phylogenetic relationships in the tribe based on nuclear, chloroplast, and morphological data sets, use Fitch parsimony optimization (FPO) and dispersal vicariance (DIVA) analyses to explore biogeographic patterns in the Gesnerioideae, and use penalized likelihood calibrated by geological events in the Caribbean and South America to explore timing of movement of lineages among Caribbean, Central American, and South American land masses and islands. Likelihood and Bayesian analyses increase support of previous hypotheses of relationships using parsimony and provide additional resolution in some parts of the phylogeny. FPO and DIVA analyses suggest that the most likely scenario for movement among

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Section: And Bayesian Inference Analyses Of Gloxinieae Relationshimentioning

confidence: 98%

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confidence: 97%

Untangling Gloxinieae (Gesneriaceae). II. Reconstructing Biogeographic Patterns and Estimating Divergence Times Among New World Continental and Island Lineages

2008

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“…The species of Aeschynanthus are believed to be wind-dispersed as are those of Schistanthe. Analysis of ITS nrDNA sequence data has recovered two wellsupported clades, one Asian-centered and the other Malesiancentered (Denduangboripant & al., 2001). In contrast to the Vireyas, there is no clear evidence of a polarized dispersal.…”

Section: Subsect Malayovireyamentioning

confidence: 99%

Major speciation accompanied the dispersal of Vireya Rhododendrons (Ericaceae, Rhododendron sect. Schistanthe) through the Malayan archipelago: Evidence from nuclear gene sequences

Goetsch

Craven

Hall

2011

TAXON

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The species within Rhododendron sect. Schistanthe (= sect. Vireya), a taxon unique for its tropical habitat, distinctive leaf scales, and tailed seeds, have diversified greatly in morphological features. The section contains over 300 species, occurring mainly on the Malay Peninsula, New Guinea, and the islands between. An analysis based on the combined sequences of three nuclear genes supports a phylogeny in which sect. Schistanthe (less R. santapaui) is monophyletic, with well‐defined clades corresponding to subsections Euvireya, Malayovireya, Pseudovireya, and Discovireya. Within subsect. Euvireya, molecular‐phylogenetic groupings follow geography more closely than traditional taxonomic groupings based upon morphology. One of the two most derived clades contains exclusively species from New Guinea, Australia, and the Solomon Islands. The results are consistent with a stepwise phylogeographic history of sect. Schistanthe, beginning in Asia, proceeding eastward and reaching New Guinea within the last 15 Ma, when movement of the Australian tectonic plate brought New Guinea into the Malesian domain.

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“…The evolution of additional Figure 23. Data for examined species showing relationships between ontogeny, seed morphology and molecular results (analysis of data from Denduangboripant et al, 2001). This tree is identical to that based on a larger set of species and rooted on Cyrtandra and Lysionotus (not shown) as presented in Denduangboripant et al (2001).…”

Section: Discussionmentioning

confidence: 69%

“…Species in this clade have anticlockwise spiral cell orientation. It would be reasonable to assume from the current evidence (Kiehn & Weber, 1997;Denduangboripant & Cronk, 2000;Denduangboripant, Mendum & Cronk, 2001;Mendum et al, 2001) It is interesting that species in sect. Aeschynanthus (seed type A; Clade II) share patterns of seed and appendage development with those in sects Diplotrichium, Polytrichium and sect.…”

Section: Discussionmentioning

confidence: 82%

The ontogeny of Aeschynanthus seeds – a comparative study using scanning electron microscopy

Christie

Mendum

2002

Botanical Journal of the Linnean Society

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Seed morphology in the genus Aeschynanthus (Gesneriaceae) is important in sectional classification. The number and type of appendages at the hilar end of the seed, papilla structure and testa cell orientation are all significant. SEM studies of seed and appendage development, at seven‐day intervals from pre‐pollination to maturity, were carried out in order to investigate possible sectional and seed type relationships. Fifteen species, representing six sections, were examined. Results show that there are no significant differences pre‐pollination but two patterns were evident post‐pollination, for both seed and hilar appendage development. Pattern I occurred in sects Microtrichium and Haplotrichium s.s. Pattern II was seen in sects. Aeschynanthus, Diplotrichium and Polytrichium. Patterns were less clear in species belonging to a group not yet circumscribed and here referred to as sect. X, but most closely resembled Pattern II. This study shows that the orientation of the testa cells is a developmental feature, defining the two major clades in the genus. It also shows that, in the two sections possessing more than one hilar appendage, there is initial development of one appendage relative to the coma in sect. Polytrichium and of one appendage relative to the second in sect. Diplotrichium. The results of this study are discussed with respect to molecular and morphological findings, and the evolutionary significance considered. © 2002 The Linnean Society of London, Botanical Journal of the Linnean Society, 138, 197–207.

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Evolution in Aeschynanthus (Gesneriaceae) inferred from ITS sequences

Cited by 25 publications

References 16 publications

Untangling Gloxinieae (Gesneriaceae). II. Reconstructing Biogeographic Patterns and Estimating Divergence Times Among New World Continental and Island Lineages

Untangling Gloxinieae (Gesneriaceae). II. Reconstructing Biogeographic Patterns and Estimating Divergence Times Among New World Continental and Island Lineages

Major speciation accompanied the dispersal of Vireya Rhododendrons (Ericaceae, Rhododendron sect. Schistanthe) through the Malayan archipelago: Evidence from nuclear gene sequences

The ontogeny of Aeschynanthus seeds – a comparative study using scanning electron microscopy

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