Microscopy and Histochemistry of Leaves and Stems of <i>Baccharis</i> Subgenus <i>Coridifoliae</i> (Asteraceae) Through LM and SEM-EDS

Almeida, Valter Paes de; Heiden, Gustavo; Raman, Vijayasankar; Novatski, Andressa; Bussade, Julia Emília; Farago, Paulo Vítor; Manfron, Jane

doi:10.1017/s1431927621012447

Cited by 13 publications

(9 citation statements)

References 38 publications

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“…album is reported here for the first time. The grouping of more than one crystal morphotype can be present as the feature of the subspecies, species, section, subgenus or genus, giving support to the taxonomy 32 .…”

Section: Resultsmentioning

confidence: 86%

“…6 e). Oil bodies also react with this reagent 32 and are found in the epidermis and mesophyll (Fig. 6 a) of the lamina, in the epidermis (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Mehrvarz et al 29 have reported that the distribution and morphotype of the calcium oxalate crystals could provide valuable support in delimitating of subspecific taxa in V. album . The use of calcium oxalate crystals in solving taxonomic problems has been suggested in previous studies of other plant groups such as Baccharis 32 , 34 , Eucalyptus 35 and Piper 36 .…”

Section: Resultsmentioning

confidence: 99%

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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: 86%

“…6 e). Oil bodies also react with this reagent 32 and are found in the epidermis and mesophyll (Fig. 6 a) of the lamina, in the epidermis (Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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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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“…Crystals have been reported in the perimedullary region of stems in several Baccharis species (Almeida et al, 2021;Barreto et al, 2015;Bobek et al, 2015;Budel & Duarte, 2008;Jasinski et al, 2014;Oliveira et al, 2011;Souza et al, 2011).…”

Section: Morphology and Distribution Of Crystalsmentioning

confidence: 99%

“…The genus comprises 442 species (Heiden & Bonifacino, 2021), is monophyletic (Heiden et al, 2019), and presents similarities in the morphological features among several groups of closely related species causing challenges in taxonomic studies of the group (Almeida et al, 2021;Bobek et al, 2016;Budel et al, 2018).…”

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confidence: 99%

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

Raeski

Heiden

Novatski

et al. 2023

Microscopy Res & Technique

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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 species identification and provide novel data for the taxonomy of Baccharis. Research Highlights Most species of Baccharis have a specific crystalline pattern. Each species produces a crystal morphotype or a set of morphotypes specific to it. The crystals observed are formed by calcium oxalate.

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Chemical Profiles and Cytotoxic Activities of Essential Oils from Six Species of Baccharis Subgenus Coridifoliae (Asteraceae)

Paes de Almeida,

Tolouei,

Minteguiaga

et al. 2023

Chemistry & Biodiversity

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Several Baccharis species are popularly known in traditional medicine as “carquejas”, “vassouras”, “ervas‐santas” and “mio‐mios”, and are used as anti‐inflammatories, digestives, and diuretics. This study aimed to investigate the chemical compositions and cytotoxic activities of essential oils (EOs) of six Baccharis species belonging to subgenus Coridifoliae, namely B. albilanosa, B. coridifolia, B. erigeroides, B. napaea, B. ochracea, and B. pluricapitulata. GC/MS analyses of the EOs showed that the oxygenated sesquiterpenes spathulenol (7.32–38.22 %) and caryophyllene oxide (10.83–16.75 %) were the major components for all the species. The EOs of almost all species were cytotoxic against cancer (BT‐549, KB, SK‐MEL and SK‐OV‐3) and normal kidney (VERO and LLC‐PK1) cell lines, whereas B. erigeroides EO showed cytotoxicity only against LLC‐PK1. This article augments the current knowledge about the chemical‐biological properties of Baccharis subgenus Coridifoliae and discusses the therapeutic potentials of these economically unexploited plants.

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Microscopy and Histochemistry of Leaves and Stems of Baccharis Subgenus Coridifoliae (Asteraceae) Through LM and SEM-EDS

Abstract: Abstract

Cited by 13 publications

References 38 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

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

Chemical Profiles and Cytotoxic Activities of Essential Oils from Six Species of Baccharis Subgenus Coridifoliae (Asteraceae)

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