The leaf of Agapanthus africanus (L.) Hoffm.: A physical-chemical perspective of terrestrialization in the cuticle

Nunes, Paulo; Nunes, S. C.; Pereira, Rui; Cruz, Rui; Rocha, J.S.R.; Ravishankar, Ajith P.; Silva, Leticia Fernandes da; Bacelar, Eunice; Casal, Susana; Anand, S.; Crespí, António L.; Fernandes, Mariana; Bermúdez, V. de Zea

doi:10.1016/j.envexpbot.2023.105240

Cited by 8 publications

(2 citation statements)

References 87 publications

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“…The upper epidermis is formed of a one row of columnar, axillary elongated cells with more prominent projections. The epidermal cells are wider and shorter than the upper epidermis and covered with a thin cuticle as in the transverse section [25]. However, the epidermal cells in the surface view appear polygonal, somewhat rhomboid-shaped with slightly wavy anticlinal walls covered with a smooth cuticle showing anomocytic stomata that are more abundant in the lower epidermis than the upper one.…”

Section: Lower Epidermismentioning

confidence: 87%

Pharmacognostical studies of the flower, leaf, root, and rhizome used for the identification and authentication of Agapanthus africanus (L.), cultivated in Egypt.

Younis,

Gomaa,

Ibrahim

et al. 2023

Journal of advanced Biomedical and Pharmaceutical Sciences

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Agapanthus africanus [L.], is a rhizomatous evergreen plant with fleshy roots, linear leaves, and umbellate inflorescence. It is native to southern Africa and commonly named the Nile lily or African lily. Regarding how closely related their morphologies are, the members of the genus Agapanthus have proven challenging to divide into distinct species. Additionally, no documentation was detected for the phytochemical screening, macro and micromorphology of A. africanus up to date. This inspired us to describe the macro and micromorphology of the flower, leaf, root, and rhizome of A. africanus and evaluate its phytoconstituents. This study demonstrated that A. africanus is free from any trichomes and is rich with various forms of calcium oxalate crystals, both these characteristics help to define the plant under investigation. Concomitantly, the fibrous layer of the anther, the papillosed stigma, and the ellipsoid, non-spiny pollen grains, were recorded in the morphology of the flower in this study. The phytochemical screening investigated the presence of saponins, phenolics, and flavonoids as the major constituents of the underground parts of A. africanus. As expected, this resulted in a more precise tool for taxonomical identification and species delimitation of the genus Agapanthus.

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Section: Lower Epidermismentioning

confidence: 87%

Pharmacognostical studies of the flower, leaf, root, and rhizome used for the identification and authentication of Agapanthus africanus (L.), cultivated in Egypt.

Younis,

Gomaa,

Ibrahim

et al. 2023

Journal of advanced Biomedical and Pharmaceutical Sciences

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“…The cuticles present in plants are made up of lipophilic cutin and hydrophobic compounds called waxes, in addition to a varied number of polysaccharides [66][67][68]. It is worth mentioning that both the presence and the ornamentation of the cuticle have a great taxonomic value for the species [69].…”

Section: Discussionmentioning

confidence: 99%

New Information of the Anatomy and Phytochemical Screening of Pentaclethra macroloba (Willd.) Kuntze (Caesalpinioideae-Leguminosae) Seeds

Correia,

Gurgel,

Ribeiro

et al. 2023

International Journal of Food Science

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Pentaclethra macroloba (Willd.), whose common name is “pracaxi,” is naturally found in the Amazon region. The present study is aimed at analyzing the anatomy, seed histochemistry, and chemical composition in fatty acid profile of P. macroloba seed oils. Seeds were collected in the cities of Belém, Marituba, and São Domingos do Capim-PA. For the study in light microscopy, scanning electron microscopy, and histochemistry, seeds were sectioned in cross and longitudinal sections of the embryonic axis and fixed in formaldehyde, acetic acid, and 50% ethyl alcohol; neutral-buffered formalin; and formaldehyde and ferrous sulfate and stored in 70% ethyl alcohol. For the anatomical study, the seeds were subjected to the usual techniques of plant anatomy. Histochemical tests were performed on plant material, freehand sectioned, and embedded in histological paraffin with DMSO. The fatty acid profile was determined for gas chromatography (GC-FID). Integument is divided into three strata, monoseriate exotesta, mesotesta formed by several layers of parenchyma cells, and monoseriate endotesta, formed by compressed cells. Cotyledons are composed of thin-walled parenchyma cells with several secretory cavities and secretory idioblasts. The main metabolic classes are lipids, phenolic compounds, carbohydrates, proteins, and alkaloids. The main fatty acids found in P. macroloba oil are oleic, behenic, lignoceric, and linoleic. P. macroloba seeds have important anatomical characteristics for their circumscription in Leguminosae and also in Caesalpinioideae, and their oil is rich in fatty acids essential to the human diet, providing many benefits to the human health, such as fatty acids belonging to the omega family (linoleic, oleic).

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POE‐Mediated Tunable Quantum Yield of Carbon Dots−Derived From Agapanthus Africanus (L.) Hoffmann Leaves

Nunes,

Pereira,

Nunes

et al. 2024

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The green synthesis of carbon dots (CDs) from natural sources is a challenging goal. Herein CDs are produced from Agapanthus africanus (L.) Hoffmann leaves by carbonization at 200/300 °C for 2/3 h. Samples are named CZ‐X‐Y, where Z, X, and Y represent carbonization, temperature, and time, respectively. CZ‐200‐3, CZ‐300‐2, and CZ‐300‐3 CDs have average sizes of 3.7 ± 0.7, 5.3 ± 1.2, and 5.1 ± 1.6 nm, respectively. Their surface, devoid of chlorophyll, contains ─OH, ─C═O, and ─C(═O)OH groups and sylvite. Isolated CZ‐300‐3 emits at 400 nm (excited at 260 nm) and exhibits an emission quantum yield (QY) value of 2 ± 1%. Embedding in the d‐U(600)/d‐(900) di‐ureasil matrices resulted in transparent films with emission intensity maxima at 420/450 nm (360 nm), and QY values of 7 ± 1/16 ± 2% (400 nm). The enhancement of the QY value of the bare CDs agrees with an efficient passivation provided by the hybrid host. The hydrophilic CZ‐300‐3 CDs also exerted a marked surface modifying role, changing the surface roughness and the wettability of the hybrid films.

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The leaf of Agapanthus africanus (L.) Hoffm.: A physical-chemical perspective of terrestrialization in the cuticle

Cited by 8 publications

References 87 publications

Pharmacognostical studies of the flower, leaf, root, and rhizome used for the identification and authentication of Agapanthus africanus (L.), cultivated in Egypt.

Pharmacognostical studies of the flower, leaf, root, and rhizome used for the identification and authentication of Agapanthus africanus (L.), cultivated in Egypt.

New Information of the Anatomy and Phytochemical Screening of Pentaclethra macroloba (Willd.) Kuntze (Caesalpinioideae-Leguminosae) Seeds

POE‐Mediated Tunable Quantum Yield of Carbon Dots−Derived From Agapanthus Africanus (L.) Hoffmann Leaves

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