Polyphyly of <i>Polycarpon</i> (Caryophyllaceae) inferred from DNA sequence data

Kool, Anneleen; Bengtson, Annika; Thulin, Mats

doi:10.2307/25065859

Cited by 33 publications

(28 citation statements)

References 37 publications

(45 reference statements)

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“…and Heteropetalum Benth. The close affinity between these genera was established by many authors independently on morphological grounds (for details see Erkens et al 2007a, Erkens & Maas 2008 and via more formal (molecular or morphological) phylogenetic analyses (He et al 1999, Bygrave 2000. However, none of the latter studies had sufficient taxon sampling or enough data to adequately address the putative monophyly of these four genera.…”

Section: The Former Guatteria Groupmentioning

confidence: 99%

“…However, none of the latter studies had sufficient taxon sampling or enough data to adequately address the putative monophyly of these four genera. This question was specifically addressed in a molecular phylogenetic study and it was shown that Guatteriopsis, Guatteriella and Heteropetalum were actually nested within Guatteria (Erkens et al 2007a). As a result the nested genera were transferred into Guatteria (Erkens & Maas 2008).…”

Section: The Former Guatteria Groupmentioning

confidence: 99%

“…2). Therefore, a completely new subgeneric classification of Guatteria is still premature because of the lack of molecular and morphological synapomorphies to define new sections (Erkens et al 2007a. Currently, an improved version of this phylogenetic tree is being generated based on full plastome sequences (Erkens & Brandão, in prep.).…”

Section: Phylogenetic Tree Of Guatteriamentioning

confidence: 99%

“…Three major biogeographical events in the history of the genus were reconstructed and hypothesised to be responsible for the pattern found (Erkens et al 2007b). The oldest extant lineages of Guatteria can be found in Central America (Erkens et al 2007b), except for the lineage leading to G. heteropetala (Erkens et al 2007a). The Central American lineage has diversified and given rise to mainly endemic Central American species, which are morphologically clearly distinguishable.…”

Section: Infrageneric Biogeography Of Guatteriamentioning

confidence: 99%

See 3 more Smart Citations

Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae)

Maas¹,

Westra²,

Guerrero³

et al. 2015

blum - j plant tax and plant geog

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A taxonomic revision of the genus Guatteria, including the former genera Guatteriella, Guatteriopsis and Heteropetalum is given. Within the genus Guatteria 177 species are recognized, 25 of which are new. Included are chapters on the history of the taxonomy of the genus, morphology, wood anatomy, karyology, palynology, chemistry, flower biology and pollination, dispersal, distribution and ecology, phylogeny and molecular studies, conservation, and uses. A synoptical key to all species is included, as well as two dichotomous keys, one for the species of Central America and Mexico, and one for the species of NE, E and SE Brazil. The species treatments include descriptions, full synonymy, geographical and ecological notes, vernacular names and taxonomic notes. For all species distribution maps are made. A complete identification list with all exsiccatae studied, an index to vernacular names and an index of scientific names is included at the end.

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Section: The Former Guatteria Groupmentioning

confidence: 99%

Section: The Former Guatteria Groupmentioning

confidence: 99%

Section: Phylogenetic Tree Of Guatteriamentioning

confidence: 99%

Section: Infrageneric Biogeography Of Guatteriamentioning

confidence: 99%

See 2 more Smart Citations

Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae)

Maas¹,

Westra²,

Guerrero³

et al. 2015

blum - j plant tax and plant geog

View full text Add to dashboard Cite

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“…The first dataset is from a recent molecular phylogenetic study (Erkens et al 2007) of the large Neotropical tree genus Guatteria Ruiz & Pav. (Annonaceae; Magnoliales, 'magnoliids').…”

mentioning

confidence: 99%

Assessment of age and greenness of herbarium specimens as predictors for successful extraction and amplification of DNA

Erkens

Cross²,

Maas³

et al. 2008

blum - j plant tax and plant geog

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sUMMARyAge and the greenness of leaves have been frequently used as indicators for selecting herbarium specimens for molecular studies. Although plant DNA extraction and amplification have been common lab procedures for the past 20 years, no studies specifically investigated the success of these indicators. Here the predictive value of age and the greenness for extraction and amplification success is assessed, using a large number of herbarium specimens from different plant groups. the investigation of these indicators is important because herbarium material is a precious commodity, and is often the only remaining floral record of now extinct ecosystems. In cases where little leaf material is available, most researchers still attempt to extract DNA. This study shows that age and greenness of leaves are unreliable indicators of extraction and amplification success, although together they can have limited usefulness. Furthermore, we found that the amount of extracted DNA from herbarium specimens decreases with c. 1% per year in age of the specimens. Therefore, researchers sometimes should refrain from using old rare specimens because chances of success are unpredictable and precious herbarium material might be wasted. The uncritical use of indicators such as age or leaf colour is therefore not recommendable. Furthermore, botanists should annotate how specimens were collected and dried because this information is essential for successful DNA extraction. Hopefully, similar studies will be reported in order to identify the best approaches to extract DNA from herbarium specimens.

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Western Eurasian–western North American disjunct plant taxa: The dry‐adapted ends of formerly widespread north temperate mesic lineages—and examples of long‐distance dispersal

Kadereit

Baldwin

2012

TAXON

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By reviewing 25 cases of western Eurasian–western North American disjunct flowering plant taxa, we sought to improve understanding of the origin of this type of biogeographic pattern. In nine of the groups studied, phylogenetic and other evidence (often circumstantial) was found for parallel evolutionary shifts of widespread Northern Hemisphere lineages into dry environments in western Eurasia and western North America (Asteraceae‐Cichorieae, Chenopodiaceae‐Betoideae, Descurainia, Ericaceae‐Arbutoideae, Papaver, Platanus, Antirrhineae‐Maurandya group, Anemone, Styrax). Lotus s.l. also represents independent evolution of dryland taxa but is polyphyletic. Six taxa (Daucus, Erodium, Oligomeris, Plantago, Polycarpon, Senecio) and probably four others (Chenopodiaceae‐Camphorosmeae, California, Antirrhineae‐Gambelia group, Antirrhineae‐Antirrhinum group) are likely examples of long‐distance dispersal between western Eurasia and western North America. In Asteraceae‐Gnaphalieae either parallel evolution or long‐distance dispersal might explain the disjunction. Migration across a Beringian or North Atlantic Land Bridge appears a possible explanation for only three of the 25 disjunctions (Datisca, Cicendia, Zeltnera/Exaculum/Schenkia) based on taxon ecology and divergence times. The disjunction in Cercis remains unexplained. In short, independent ecological shifts to dry environments and long‐distance dispersal probably account for the majority of taxon‐disjunctions studied; migration of lineages (pre)adapted to dry conditions across either the Beringian or the North Atlantic Land Bridges, much discussed in the literature, only rarely needs to be invoked. Based on the similar times of origin of disjunctions between western Eurasian and western North American taxa and those between East Asian and eastern North American plants, we conclude that these two patterns are best regarded as parts of an ecological, geographical, and temporal continuum.

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Polyphyly of Polycarpon (Caryophyllaceae) inferred from DNA sequence data

Cited by 33 publications

References 37 publications

Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae)

Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae)

Assessment of age and greenness of herbarium specimens as predictors for successful extraction and amplification of DNA

Western Eurasian–western North American disjunct plant taxa: The dry‐adapted ends of formerly widespread north temperate mesic lineages—and examples of long‐distance dispersal

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