Lectotypification de<i>Raphia sudanica</i>A. Chev. (Arecaceae, Calamoideae), et commentaires sur la biologie et la conservation de l'espèce

Ouattara, Doudjo Noufou; Stauffer, Fred W.; Bakayoko, Adama

doi:10.5252/a2014n1a5

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…Our results, however, suggest that certain sections erected by Otedoh [21] are not monophyletic and need to be re-evaluated. Differences in phylogenetic relationships between the concatenated and coalescent approaches have been increasingly reported in this genomic era [28][29][30]. Our results were similar to those in Couvreur et al [19] where higher bootstrap support was obtained when using the concatenation approach, despite the coalescent approach highlighting considerable gene tree conflict.…”

Section: Synthesizing Morphology and Molecules: The Sections Of Otedosupporting

confidence: 88%

“…The Obclavate section, composed of the sole species R. sudanica, is recovered with strong or moderate support as sister to the Raphiate section. This species presents a unique inflorescence structure within the genus that is reduced and compressed into a cylindrical shape ( Figure 1C), with large bracts covering the partial inflorescences almost completely [20,21,27]. In addition, and in contrast to most species, R. sudanica thrives within the drier regions of the Sahel along small stream courses.…”

Section: Synthesizing Morphology and Molecules: The Sections Of Otedomentioning

confidence: 99%

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Unraveling the Phylogenomic Relationships of the Most Diverse African Palm Genus Raphia (Calamoideae, Arecaceae)

Helmstetter

Kamga

Bethune

et al. 2020

Plants

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Palms are conspicuous floristic elements across the tropics. In continental Africa, even though there are less than 70 documented species, they are omnipresent across the tropical landscape. The genus Raphia has 20 accepted species in Africa and one species endemic to the Neotropics. It is the most economically important genus of African palms with most of its species producing food and construction material. Raphia is divided into five sections based on inflorescence morphology. Nevertheless, the taxonomy of Raphia is problematic with no intra-generic phylogenetic study available. We present a phylogenetic study of the genus using a targeted exon capture approach sequencing of 56 individuals representing 18 out of the 21 species. Our results recovered five well supported clades within the genus. Three sections correspond to those based on inflorescence morphology. R. regalis is strongly supported as sister to all other Raphia species and is placed into a newly described section: Erectae. Overall, morphological based identifications agreed well with our phylogenetic analyses, with 12 species recovered as monophyletic based on our sampling. Species delimitation analyses recovered 17 or 23 species depending on the confidence level used. Species delimitation is especially problematic in the Raphiate and Temulentae sections. In addition, our clustering analysis using SNP data suggested that individual clusters matched geographic distribution. The Neotropical species R. taedigera is supported as a distinct species, rejecting the hypothesis of a recent introduction into South America. Our analyses support the hypothesis that the Raphia individuals from Madagascar are potentially a distinct species different from the widely distributed R. farinifera. In conclusion, our results support the infra generic Plants 2020, 9, 549 2 of 20 classification of Raphia based on inflorescence morphology, which is shown to be phylogenetically useful. Classification and species delimitation within sections remains problematic even with our phylogenomic approach. Certain widely distributed species could potentially contain cryptic species. More in-depth studies should be undertaken using morphometrics, increased sampling, and more variable markers. Our study provides a robust phylogenomic framework that enables further investigation on the biogeographic history, morphological evolution, and other eco-evolutionary aspects of this charismatic, socially, and economically important palm genus.

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Section: Synthesizing Morphology and Molecules: The Sections Of Otedosupporting

confidence: 88%

Section: Synthesizing Morphology and Molecules: The Sections Of Otedomentioning

confidence: 99%

Unraveling the Phylogenomic Relationships of the Most Diverse African Palm Genus Raphia (Calamoideae, Arecaceae)

Helmstetter

Kamga

Bethune

et al. 2020

Plants

View full text Add to dashboard Cite

show abstract

“…The Obclavate section, composed of the sole species R. sudanica , is recovered with strong or moderate support as sister to the Raphiate section. This species presents a unique inflorescence structure within the genus that is reduced and compressed into a cylindrical shape (Figure 1 C), with large bracts covering the partial inflorescences almost completely [20,21,27]. In addition, and in contrast to most species, R. sudanica thrives within the drier regions of the Sahel along small stream courses.…”

Section: Discussionmentioning

confidence: 99%

Unravelling the Phylogenomic Relationships of the Most Diverse African Palm GenusRaphia(Calamoideae, Arecaceae)

Helmstetter¹,

Kamga

Bethune³

et al. 2020

Preprint

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Palms are conspicuous floristic elements across the tropics. In continental Africa, even 1 though there are less than 70 documented species, they are omnipresent across the tropical landscape. 2The genus Raphia has 20 accepted species in Africa and one species endemic to the Neotropics. It is 3 the most economically important genus of African palms with most of its species producing food 4 and construction material. Raphia is divided into five sections based on inflorescence morphology. 5Nevertheless, the taxonomy of Raphia is problematic with no intra-generic phylogenetic study 6 available. We present a phylogenetic study of the genus using a targeted exon capture approach 7 sequencing of 56 individuals representing 18 out of the 21 species. Our results recovered five 8 well supported clades within the genus. These reflect to a certain extent the sections as defined 9 based on inflorescence morphology. Overall, morphological based identifications agreed well with 10 our phylogenetic analyses, with 12 species recovered as monophyletic based on our sampling.

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“…The endocarp is not differentiated (Dransfield et al 2008), which makes the fruit a berry. The fleshy mesocarp is edible in certain species like R. hookeri, R. sese, R. sudanica, R. vinifera and R. zamiana (Mogue Kamga et al 2018;Ouattara et al 2014). The mesocarp varies among species in thickness, texture, and chemical composition (Tuley 1995).…”

Section: Raphia Fruitsmentioning

confidence: 99%

Use and Cultural Significance of Raphia Palms

et al. 2020

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Lectotypification deRaphia sudanicaA. Chev. (Arecaceae, Calamoideae), et commentaires sur la biologie et la conservation de l'espèce

Cited by 6 publications

References 5 publications

Unraveling the Phylogenomic Relationships of the Most Diverse African Palm Genus Raphia (Calamoideae, Arecaceae)

Unraveling the Phylogenomic Relationships of the Most Diverse African Palm Genus Raphia (Calamoideae, Arecaceae)

Unravelling the Phylogenomic Relationships of the Most Diverse African Palm GenusRaphia(Calamoideae, Arecaceae)

Use and Cultural Significance of Raphia Palms

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