Evolution of a Charismatic Neotropical Clade: Molecular Phylogeny of <i>Tabebuia</i> s. l., Crescentieae, and Allied Genera (Bignoniaceae)

Grose, Susan O.; Olmstead, Richard G.

doi:10.1600/036364407782250553

Cited by 60 publications

(53 citation statements)

References 21 publications

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“…, 1988; Graham, 2002; Hong et al. , 2004; Barker & Hickey, 2006; Grose & Olmstead, 2007; Vorontsova et al. , 2007), Malesia (Heads, 2003) and New Zealand (Heenan & Molloy, 2006).…”

Section: Discussionmentioning

confidence: 99%

Panbiogeography of New Caledonia, south‐west Pacific: basal angiosperms on basement terranes, ultramafic endemics inherited from volcanic island arcs and old taxa endemic to young islands

Heads¹

2008

Journal of Biogeography

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“…, 1988; Graham, 2002; Hong et al. , 2004; Barker & Hickey, 2006; Grose & Olmstead, 2007; Vorontsova et al. , 2007), Malesia (Heads, 2003) and New Zealand (Heenan & Molloy, 2006).…”

Section: Discussionmentioning

confidence: 99%

Panbiogeography of New Caledonia, south‐west Pacific: basal angiosperms on basement terranes, ultramafic endemics inherited from volcanic island arcs and old taxa endemic to young islands

Heads¹

2008

Journal of Biogeography

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“…Because this is one of the bignoniaceous species whose bark and wood are known to contain lapachol, to which a broad spectrum of therapeutic activities has been attributed (Hussain et al, 2007), C. anticyphilitica may potentially have other medical uses. Cybistax antisyphilitica belongs to an inner monophyletic clade in Bignoniaceae composed of palmateleaved trees and shrubs (except for a few species that have probably reversed to a simple leaf condition by a reduction in leaflet number), named the Tabebuia alliance (Grose and Olmstead, 2007;Olmstead et al, 2009).…”

Section: Species and Study Sitesmentioning

confidence: 99%

The reproductive biology of Cybistax antisyphilitica (Bignoniaceae), a characteristic tree of the South American savannah-like “Cerrado” vegetation

Bittencourt

Pereira

São-Thiago

et al. 2011

Flora - Morphology, Distribution, Functional Ecology of Plants

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a b s t r a c tBignoniaceous woody species are very important ecological components of neotropical forests, but the reproductive biology of many species, such as Cybistax antisyphilitica, remains virtually unknown. Most species of Bignoniaceae are characteristically self-sterile, despite typically exhibiting normal pollen tube growth throughout the style, combined with slow rates of ovule penetration, fertilisation and endosperm initiation in selfed pistils. Uniform abortion occurs within a few days of anthesis, indicating the occurrence of late-acting self-incompatibility (LSI). However, breeding system studies have been performed in fewer than 7% of species, and other types of breeding systems (e.g., self-compatibility and apomixis) have been reported in this family. In the present study, the reproductive biology of C. antisyphilitica was investigated by field observation of flower visitors and floral events. Moreover, reproductive biology of this species was examined through experimental pollinations, analyses of pollen tube growth and ovule penetration using fluorescence microscopy, verification of pistil longevity, and a histological analysis of unpollinated vs. self-pollinated pistils. Finally, morphological aspects, quantities and germination were investigated in seeds that resulted from different pollination treatments. Natural pollination was effected by largeand medium-sized bees, and their visiting behaviour favours a high proportion of geitonogamy and no pollen limitation. Self-pollinated flowers produced no fruits, and all of the characteristic post-pollination events cited above were verified, witnessing the occurrence of LSI with post-zygotic rejection of selfed pistils in C. antisyphilitica. Although some indications of extended pistil longevity were found in selfed pistils, this feature seemed to be affected by unidentified environmental factors. The seeds were always monoembryonic and with high viability. A larger variation in the number of viable seeds was found in fruits derived from natural pollination. A low fruit set was observed after both natural and crosspollination, and most crossed fruits underwent abortion at several points during the juvenile phase, even when protected against herbivory. The formation of surplus flowers/juvenile fruits and the apparently wasteful selfing mechanism control implied in LSI are discussed in the context of the perennial life style of tropical woody plant species.

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“…The Tabebuia alliance, is a lineage endemic to the Neotropics and consists of 14 genera and 147 species of trees and shrubs, from which stands a small clade of three genera traditionally assigned to the tribe Crescentieae, Amphitecna , Crecentia , and Parmentiera , which together comprise nearly 36 species of trees distributed in Central America, northern Colombia and the Greater Antilles (Gentry 1980, Grose and Olmstead 2007a). …”

Section: Introductionmentioning

confidence: 99%

A new species of Amphitecna (Bignoniaceae) endemic to Chiapas, Mexico

Ortiz-Rodríguez¹,

Ramos²,

Gómez-Domínguez³

2016

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Amphitecna loreae Ortiz-Rodr. & Burelo, sp. nov. (Bignoniaceae), a new species endemic to the karst rainforest in southern Mexico, is described and illustrated. The new species differs from the other species of Amphitecna by the combination of cauliflorous inflorescences, larger flowers, buds rounded at apex, and globose-ellipsoid rather than acuminate fruits. A key to the Mexican species of Amphitecna is presented.

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Evolution of a Charismatic Neotropical Clade: Molecular Phylogeny of Tabebuia s. l., Crescentieae, and Allied Genera (Bignoniaceae)

Cited by 60 publications

References 21 publications

Panbiogeography of New Caledonia, south‐west Pacific: basal angiosperms on basement terranes, ultramafic endemics inherited from volcanic island arcs and old taxa endemic to young islands

Panbiogeography of New Caledonia, south‐west Pacific: basal angiosperms on basement terranes, ultramafic endemics inherited from volcanic island arcs and old taxa endemic to young islands

The reproductive biology of Cybistax antisyphilitica (Bignoniaceae), a characteristic tree of the South American savannah-like “Cerrado” vegetation

A new species of Amphitecna (Bignoniaceae) endemic to Chiapas, Mexico

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