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2011, PhytoKeys
Nuclear and plastid sequences from two individuals of a suspected new species of Coccinia from West Africa were added to an available molecular phylogeny for the remaining 27 species of the genus. Phylogenetic analyses of these data indicate the new species' monophyletic status and closest relatives. Based on four fertile collections, we here describe and illustrate Coccinia intermedia Holstein. We also provide a key to the Coccinia species of West Africa and map their distributions.
2019 •
Coccinia subsessiliflora (Cucurbitaceae) is newly recorded for Kenya, from South Nandi Forest. A morphological description and notes on its distribution and ecology are provided. A molecular phylogenetic analysis of 22 species of Coccinia based on the nuclear DNA sequence of the LEAFY-like 2nd intron was conducted, and the phylogenetic position of C. subsessiliflora is indicated.
BMC Evolutionary Biology
A dated phylogeny and collection records reveal repeated biome shifts in the African genus Coccinia (Cucurbitaceae)2011 •
Background Conservatism in climatic tolerance may limit geographic range expansion and should enhance the effects of habitat fragmentation on population subdivision. Here we study the effects of historical climate change, and the associated habitat fragmentation, on diversification in the mostly sub-Saharan cucurbit genus Coccinia, which has 27 species in a broad range of biota from semi-arid habitats to mist forests. Species limits were inferred from morphology, and nuclear and plastid DNA sequence data, using multiple individuals for the widespread species. Climatic tolerances were assessed from the occurrences of 1189 geo-referenced collections and WorldClim variables. Results Nuclear and plastid gene trees included 35 or 65 accessions, representing up to 25 species. The data revealed four species groups, one in southern Africa, one in Central and West African rain forest, one widespread but absent from Central and West African rain forest, and one that occurs from East Africa to southern Africa. A few individuals are differently placed in the plastid and nuclear (LFY) trees or contain two ITS sequence types, indicating hybridization. A molecular clock suggests that the diversification of Coccinia began about 6.9 Ma ago, with most of the extant species diversity dating to the Pliocene. Ancestral biome reconstruction reveals six switches between semi-arid habitats, woodland, and forest, and members of several species pairs differ significantly in their tolerance of different precipitation regimes. Conclusions The most surprising findings of this study are the frequent biome shifts (in a relatively small clade) over just 6 - 7 million years and the limited diversification during and since the Pleistocene. Pleistocene climate oscillations may have been too rapid or too shallow for full reproductive barriers to develop among fragmented populations of Coccinia, which would explain the apparently still ongoing hybridization between certain species. Steeper ecological gradients in East Africa and South Africa appear to have resulted in more advanced allopatric speciation there.
2015 •
This monograph deals with all 95 names described in the Cucurbitaceae genus Coccinia and recognizes 25 species. Taxonomic novelties are Coccinia adoensis var. aurantiaca (C.Jeffrey) Holstein, stat. nov., C. sessilifolia var. variifolia (A.Meeuse) Holstein, stat. nov., and C. adoensis var. jeffreyana Holstein, var. nov. For the 25 species 3157 collections were examined, of which 2024 were georeferenced to produce distribution maps. All species are distributed in sub-Saharan Africa with one species, C. grandis, extending from Senegal in West Africa east to Indonesia and being naturalized on Pacific Islands, in Australia, the Caribbean, and South America. Coccinia species are dioecious creepers or climbers with simple or bifid tendrils that occupy a range of habitats from arid scrubland, woodlands to lowland rainforest and mist forest. The corolla of Coccinia species is sympetalous, usually pale yellow to orange, and 1 to 4.5 cm long. Pollination is by bees foraging for pollen or nectar. After pollination, the developing ovary often exhibits longitudinal mottling, which usually disappears during maturation. All species produce berries with a pericarp in reddish colors (orange-red through to scarlet red), hence the generic name. The globose to cylindrical fruits contain numerous grayish-beige flat to lenticular seeds. Chromosome numbers are 2n = 20, 24, and 22 + XX/XY. Many Coccinia species are used for food, either as roasted tubers, greens as spinach, or the fruits as vegetables. Medicinal value is established in C. grandis, of which leaves and sap are used against diabetes.
Phytotaxa
Morphology and distribution of species of the family Cucurbitaceae in Akwa Ibom State, NigeriaA study of the family Cucurbitaceae in Akwa Ibom State, Nigeria, was carried out in 15 Local Government Areas in different ecological zones across the State, where collections were made between May 2017 and June 2018. A total of eleven species in nine genera were collected: Citrullus lanatus, Citrullus mucosospermus, Cucumis sativus, Cucurbita maxima, Lagenaria siceraria, Lagenaria sphaerica, Luffa aegyptiaca, Momordica charantia, Siraitia africana, Telfairia occidentalis, and Trichosanthes cucumerina. Variation in morphology were seen in the investigated species in the stem shape that were cylindrical or angular, the compound or simple types of leaves, the indumentum of the leaf, the acute or acuminate leaf apices, the yellow or white petals, the cylindrical, spherical or irregular fruit shape, the lanceolate or irregular seed shape, and the pubescent or smooth seed. Cultivated cucurbits collected were 65% of the species investigated, while 35% occurred in the wild. A survey of the...
PhytoKeys
Zehneria grandibracteata (Cucurbitaceae), an overlooked new species from western Kenyan forests2020 •
Zehneria grandibracteata, a new species of Cucurbitaceae from western Kenya, is described here, based on morphological and molecular data. It has long been misidentified as the widely-distributed species Z. scabra. However, it differs by its ovate leafy probract at the base of the inflorescences, subglabrous condition of the entire plant, shorter receptacle-tube and filaments, as well as denser and sessile inflorescences. Furthermore, the molecular phylogenetic analysis of Zehneria, based on nrITS sequences, further supports the argument that Z. grandibracteata should be segregated from Z. scabra.
Acta Botanica Brasilica
Seed coat diversity in some tribes of Cucurbitaceae: implications for taxonomy and species identification2015 •
Sydowia -Horn-
An outline of the family CucurbitariaceaeThe Cucurbitariaceae is a relatively poorly known family of Dothideomycetes. Cucurbitaria berberidis, the type species of Cucurbitaria, was collected on dead twigs of Berberis vulgaris in Austria and this new collection is used to epitypify the taxon and described and illustrated in detail with regard to its sexual and asexual state. Sequence data from 18S nrDNA (SSU) and 28S nrDNA (LSU) gene regions of several isolates of the epitype or iso-epitype specimens were compared with representative isolates of C. berberidis and closely related sequences in GenBank. The phylogenetic results show that Cucurbitariaceae is a well-resolved family within Pleosporineae. A Pyrenochaeta-like coelomycetous asexual state formed in the Cucurbitaria culture, and is illustrated here. The types of Curreya, Rhytidiella and Syncarpella are also studied and illustrated. Taxonomic placements of each genus with their asexual states are discussed. We provisionally accept six genera in Cucurbitariaceae i.e. Cu...
Zehneria longiflora, a new species of Cucurbitaceae from Nandi County, Kenya, is described and illustrated here. It is most similar to Z. oligosperma, but differs mainly by its longer receptacle-tube, stamens that are inserted at the middle of the receptacle-tube and with longer filaments, as well as characters of the male and female inflorescence.
Indian Wood and Allied panels
The Western India Plywoods Ltd - From glorious past to the dynamic present2018 •
Archivos de Bronconeumología
Acerca de los mecanismos asistenciales para evitar el reingreso de los pacientes con enfermedad pulmonar obstructiva crónica2013 •
Biomedical Engineering / Biomedizinische Technik
Evaluation of potential auras in generalized epilepsy from EEG signals using deep convolutional neural networks and time-frequency representationJurnal Daya Saing
Pengaruh Kepemimpinan Transformasional Terhadap Kepuasan Kerja Pada Pt. Rapp DI Departemen Water Management Estate Pulau Padang Kabupaten Meranti2018 •
2019 •
Transport and Communication Science Journal
Nghiên cứu thực nghiệm ứng xử dưới tải trọng nén của kết cấu tường bê tông đất2019 •
Ciência Florestal
MODELO 3-PG NA PREVISÃO DO POTENCIAL PRODUTIVO DE ÁREAS PARA PLANTIOS COMERCIAIS DE Eucalyptus spp2018 •
Journal of Hypertension
PS 18-07 Health Literacy and Its Association with Knowledge of Hypertension in Eastern Nepal2016 •
River Research and Applications
Gradients in the Biophysical Structure of Urban Rivers and Their Association with River Channel Engineering2011 •
Revista Uruguaya De Ciencia Politica
Aporte Para Una Topografía De Las Políticas Educativas en Uruguay: Instituciones, Ideas y Actores2012 •
Nature Human Behaviour
The devoted actor’s will to fight and the spiritual dimension of human conflict2017 •
Journal of Functional Analysis
Criterions for detecting the existence of the exponential dichotomies in the asymptotic behavior of the solutions of variational equations2010 •
2005 •
Journal of Clinical Medicine
Brain-Immune Alterations and Mitochondrial Dysfunctions in a Mouse Model of Paediatric Autoimmune Disorder Associated with Streptococcus: Exacerbation by Chronic Psychosocial Stress2019 •
2013 •
Ambiente Construído
Influência da inércia térmica do solo e da ventilação natural no desempenho térmico: um estudo de caso de um projeto residencial em light steel framing2011 •
Pain Research & Management
Pain, Health-Related Quality of Life and Health Care Utilization after Inpatient Surgery: A Pilot Study2006 •
2012 •
RSC Advances
Montmorillonite stabilized chitosan-co-mucin hydrogel for tissue engineering applications2021 •