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10 results for “Cissus”
Data from: X-rays and virtual taphonomy resolve the first Cissus (Vitaceae) macrofossils from Africa as early diverging members of the genus
PREMISE OF THE STUDY: Fossilized seeds similar to Cissus (Vitaceae) have been recognized from the Miocene of Kenya, though some were previously assigned to the Menispermaceae. We undertook a comparative survey of extant African Cissus seeds to identify the fossils and consider their implications for the evolution and biogeography of Cissus and for African early Miocene paleoenvironments. METHODS: Micro-computed tomography (µCT) and synchrotron-based X-ray tomographic microscopy (SRXTM) were used to study seed morphology and anatomy. Virtual taphonomy, using SRXTM data sets, produced digital fossils to elucidate seed taphonomy. Phylogenetic relationships within Cissus were reconstructed using existing and newly produced DNA sequences for African species. Paleobiology and paleoecology were inferred from African nearest living relatives. KEY RESULTS: The fossils were assigned to four new Cissus species, related to four modern clades. The fossil plants were interpreted as climbers inhabiting a mosaic of riverine woodland and forest to more open habitats. Virtual taphonomy explained how complex mineral infill processes concealed key seed features, causing the previous taxonomic misidentification. Newly sampled African species, with seeds most similar to the fossils, belong to four clades within core Cissus, two of which are early diverging. CONCLUSIONS: Virtual taphonomy, combined with X-ray imaging, has enabled recognition of the first fossil Cissus and Vitaceae from Africa. Early-divergent members of the core Cissus clade were present in Africa by at least the early Miocene, with an African origin suggested for the Cissus sciaphila clade. The fossils provide supporting evidence for mosaic paleoenvironments inhabited by early Miocene hominoids.
Effect of Aqueous Extracts of Cissus Quadrangularis and Dichrostachys Glomerata on GLP-1 Concentration and DPP-4 Activity in Overweight and Obese Adults
ClinicalTrials.gov study NCT06827002. IPD Sharing: YES. Countries: 1. Publications: 8.
Osteogenic Potential of Cissus Quadrangularis Alveolar Ridge Distraction
ClinicalTrials.gov study NCT04669795. IPD Sharing: NO. Countries: 1. Publications: 1.
Data from: X-rays and virtual taphonomy resolve the first Cissus (Vitaceae) macrofossils from Africa as early diverging members of the genus
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Fig. 9. – Cissus biternata L in Augustin-Pyramus de Candolle's L'Heritier Reliquiae: A volume of miscellaneous prints kept in Geneva
Fig. 9. – Cissus biternata L'Hér. Copper engraving based on P.-J. Redouté, no date. [Tabulae ineditae: tab. 121] [© Staatsbibliothek zu Berlin]
Desiccation tolerance of Cissus quadrangularis assessed in a greenhouse experiment
<p>Cissus quadrangularis is a succulent vine that degrades forests where it is not native by growing over trees and causing them to break or by impeding regeneration. Methods for its control have been tried but no satisfactory approach has been found yet. Thus, we carried out an experiment to analyze how much desiccation Cissus can endure before losing its ability to grow when rehydrated, using fragments of 0.5, 1, 2, and 3 internodes to test if desiccation tolerance was affected by fragment length. Additionally, we tested whether chemical treatment to break down the cuticle facilitated desiccation. We found out that Cissus remains viable after losing up to 80% of its weight, with shorter fragments losing viability at 70% weight loss. Acetone treatment did not accelerate desiccation time. Cissus has a remarkable tolerance to desiccation. Therefore, management strategies should ensure complete desiccation of Cissus fragments to prevent its regrowth. Reducing fragments to smaller sizes could amplify the effectiveness of control measures, but risks of increasing propagule numbers should be considered.</p>
Desiccation tolerance of Cissus quadrangularis assessed in a greenhouse experiment
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Figure 1 from: Appelhans MS, Wen J (2016) On the identity of Blanco's Cissus frutescens and its correct name in Melicope (Rutaceae) with neotypification of Cissus arborea Blanco. PhytoKeys 58: 81-85. https://doi.org/10.3897/phytokeys.58.5847
Figure 1 - The neotype of Melicope frutescens (Blanco) Appelhans & J.Wen (A).
Evaluation of Cissus Verticillata L. Infusion in Controlling Type 2 Diabetes
ClinicalTrials.gov study NCT01145534. IPD Sharing: Not stated. Countries: 1. Publications: 0.
The Use of Irvingia Gabonensis (Bush Mango)and Cissus Quadrangularis to Reduce Weight and Blood Lipids
ClinicalTrials.gov study NCT00526682. IPD Sharing: Not stated. Countries: 0. Publications: 0.
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OpenNeuro
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