Eucalyptus cinerea: Microscopic Profile, Chemical Composition of Essential Oil and its Antioxidant, Microbiological and Cytotoxic Activities

Pauzer, Matheus Saukoski; Borsato, Thais de Oliveira; Almeida, Valter Paes de; Raman, Vijayasankar; Justus, Barbara; Pereira, Camila Bugnotto; Flores, Thiago Bevilacqua; Maia, Beatriz Helena Lameiro de Noronha Sales; Meneghetti, Emanuelle Kretz; Kanunfre, Carla Cristine; Paula, Josiane de Fátima Padilha de; Farago, Paulo Vítor; Budel, Jane Manfron

doi:10.1590/1678-4324-75years-2021200772

Cited by 21 publications

(13 citation statements)

References 63 publications

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“…The chemical composition of the crystals occurring in plants can be identified using EDS 40 , 41 . In the present study, four morphotypes of calcium oxalate crystals were found in various tissues of V. album subsp.…”

Section: Resultsmentioning

confidence: 99%

Investigations on the morpho-anatomy and histochemistry of the European mistletoe: Viscum album L. subsp. album

Almeida

Monchak

Batista

et al. 2023

Sci Rep

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Viscum album L. (Santalaceae) is an important medicinal plant traditionally used to treat several diseases, including cancer therapy. This paper provides detailed morpho-anatomical characteristics of the leaves, stems and berries of Viscum album subsp. album growing as hemi-parasite on the branches of Malus domestica (Suckow) Borkh. (Rosaceae) to aid species identification and botanical characterization. Additionally, for the first time, microchemical analyses of all tissues and Energy Dispersive X-Ray Spectroscopy analyses of the calcium oxalate crystals are provided for the first time. The plant features leathery presents green leaves with parallel veins, small yellow unisexual flowers in 3-flowered cymes, and the dioecious inflorescences usually consist of three flowers, with female flowers generating white fleshy berries, in which a seed is embedded in the mucilaginous mesocarp, normally containing two embryos. Anatomically, the analyzed leaves were isobilateral and amphistomatic, and showed straight anticlinal epidermal cell walls, thick cuticles with epicuticular wax crystalloids, and paracytic stomata. The midrib is flat on both sides and has a single vascular bundle, whereas the strongly shortened petiole is concave-convex in shape and contains five bundles. The stems show a primary structure with a ring of nine vascular bundles enclosing the pith. Calcium oxalate druses and cubic and quadrangular prisms were observed in different plant parts. The results of this study provide new microscopy information that can help in the authentication of mistletoe raw materials.

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Section: Resultsmentioning

confidence: 99%

Investigations on the morpho-anatomy and histochemistry of the European mistletoe: Viscum album L. subsp. album

Almeida

Monchak

Batista

et al. 2023

Sci Rep

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“…Calcium oxalate crystals are frequently found in different tissues and organs of plants (Brito et al, 2021; Horner et al, 2012; Horner & Wagner, 1995; Pauzer et al, 2021). They present a great diversity of morphologies, such as prisms of different shapes, druses, styloids, and crystal sands, and are helpful in species identification (Upton et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Microscopic investigations of Ocotea paranaensis―A Brazilian endemic and endangered species

Gribner

Barbosa

Monteiro

et al. 2022

Microscopy Res & Technique

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This article describes the morpho-anatomies of the leaves and stems of Ocotea paranaensis Brotto, Baitello, Cervi & Santos (Lauraceae) using light and scanning electron microscopy. The main anatomical features characterizing the species are the presence of simple non-glandular trichomes in the leaves and stems, large secretory cells in the leaves, flat-convex petioles with two small lateral ribs, brachysclereids in the stem cortex and pith, and the presence of starch grains and various types of calcium oxalate crystals in the pith. Histochemical tests indicated the presence of lignin in stone cells, fibers, and xylem. Lipophilic contents were found in the secretory cells.Phenolic compounds were detected in the epidermis, hypodermis, phloem, and xylem. The present study's findings can contribute to the taxonomy and authentication of O. paranaensis. Research highlights• This article is the first morpho-anatomical study of Ocotea paranaensis.• Anatomy and histochemistry of the leaves and stems were studied by light microscopy, FESEM and EDS.• The findings of this study would aid in the species identification and taxonomy.

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“…However, other compositions can also occur, such as calcium carbonate (CaCO 3 ) crystals, or even silica crystals (SiO 2 ) (Bosqueiro, 1995;Webb, 1999). Crystals in plants have been reported as calcium oxalate using EDS in many studies (Lersten & Horner, 2011;Saulle et al, 2018;Santos et al, 2018;Almeida et al, 2020;Klider et al, 2020;Brito et al, 2021;D'Almeida et al, 2021;Pauzer et al, 2021;Gribner et al, 2022). Only a few studies have reported calcium sulfate crystals (Storey & Thomson, 1994;Pritchard et al, 2000;He et al, 2012).…”

Section: Morphology and Distribution Of Crystalsmentioning

confidence: 99%

Calcium oxalate crystal macropattern and its usefulness in the taxonomy of Baccharis (Asteraceae)

Raeski

Heiden

Novatski

et al. 2023

Preprint

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This study provides a comprehensive account of the various types of calcium oxalate crystals found in the genus Baccharis and assesses the exceptional value of crystal macropatterns for the taxonomy of the genus. The morphotype, occurrence and chemical composition of the crystals found in the stems and leaves are studied. The 44 species included in this study were selected based on a broad phylogeny-based sampling covering seven subgenera and 31 sections. These species were chosen to represent all the main phylogenetic lineages of Baccharis; thus, the sampling also represents a comprehensive coverage concerning evolutionary significance for such a large and environmentally and economically important plant group. The samples were analyzed by light microscopy, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). Several morphotypes of crystals, including druses, crystal sand, styloids and prisms, were present. Based on their chemical composition, the crystals were classified as pure calcium oxalate, mixtures of oxalates and sulfates, and mixtures of oxalates, sulfates and silica. The crystal macropatterns observed in this study aid in the species identification and provide novel data for the taxonomy of Baccharis.

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Eucalyptus cinerea: Microscopic Profile, Chemical Composition of Essential Oil and its Antioxidant, Microbiological and Cytotoxic Activities

Cited by 21 publications

References 63 publications

Investigations on the morpho-anatomy and histochemistry of the European mistletoe: Viscum album L. subsp. album

Investigations on the morpho-anatomy and histochemistry of the European mistletoe: Viscum album L. subsp. album

Microscopic investigations of Ocotea paranaensis―A Brazilian endemic and endangered species

Calcium oxalate crystal macropattern and its usefulness in the taxonomy of Baccharis (Asteraceae)

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