Comparative analytical micrographs of “vassouras” (Baccharis, Asteraceae)

Bobek, Vanessa Barbosa; Heiden, Gustavo; Oliveira, Camila Freitas de; Almeida, Valter Paes de; Paula, Josiane Padilha de; Farago, Paulo Vítor; Nakashima, Tomoe; Budel, Jane Manfron

doi:10.1016/j.bjp.2016.05.001

Cited by 25 publications

(63 citation statements)

References 18 publications

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“…The other species have isobilateral mesophyll formed by 2–4 layers of palisade and two layers of spongy parenchyma (Figure a,b,d,g,h,m,o,p). Isobilateral mesophyll has been reported for several species of Baccharis (Barreto et al, ; Bobek et al, ; Budel & Duarte, ). However, dorsiventral mesophyll was observed in B. anomala (Budel & Duarte, ) and B. singularis (Souza et al, ).…”

Section: Resultsmentioning

confidence: 88%

“…In Baccharis species, the cuticle on the leaf epidermal surfaces is usually striated (Jasinski et al, ; Bobek et al, ). All the six Baccharis species included in this study have striated cuticle on the abaxial leaf surface (Figure c,f,i,l,o,r).…”

Section: Resultsmentioning

confidence: 99%

“…Baccharis pauciflosculosa and B. sphenophylla are amphistomatic, and the other species are amphi‐hypostomatic. Amphistomatic leaves are frequent in Baccharis (Bobek et al, ; Jasinski et al, ). However, hypostomatic leaves were also reported for B. anomala (Budel & Duarte, ), B. uncinella DC.…”

Section: Resultsmentioning

confidence: 99%

“…Flagelliform and biseriate glandular trichomes have been frequently reported in Baccharis (Barreto et al, ; Bobek et al, ; Budel et al, ; Budel and Duarte, ; Budel et al, ; Freire et al, ; Jasinski et al, ; Pereira et al, ; Rodriguez et al, ; Souza et al, ; Tischer et al, ).…”

Section: Resultsmentioning

confidence: 99%

“…In most of the previous papers, flagelliform type trichomes have been considered nonglandular probably due to the morphology of the apical cell, which usually tapered above into a long translucent tube (Barreto et al, ; Bobek et al, ; Budel & Duarte, ; Budel et al, 2015; Pereira et al, ; Souza et al, ). Jasinski et al () have also classified those trichomes as nonglandular in B. glaziovii Baker.…”

Section: Resultsmentioning

confidence: 99%

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Foliar anatomy and microscopy of six Brazilian species of Baccharis (Asteraceae)

Budel¹,

Raman

Monteiro³

et al. 2018

Microscopy Res & Technique

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We report for the first time the presence of cluster crystals of calcium oxalate within the glandular trichomes and oil bodies in the mesophyll for Baccharis species. Moreover, the comparative leaf anatomy and micro-morphology of six species of Baccharis, namely B. illinita, B. microdonta, B. pauciflosculosa, B. punctulata, B. reticularioides, and B. sphenophylla is investigated by light and scanning electron microscopy. The studied species exhibited differences in their leaf anatomical features such as the morphology of the cuticle, type and occurrence of the stomata, presence or absence of glandular trichomes, shape of the flagelliform trichomes, and the arrangement of the mesophyll tissues. These differences can be helpful in the species identification and classification and could represent informative characters for the reconstruction of the evolution of the genus.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Foliar anatomy and microscopy of six Brazilian species of Baccharis (Asteraceae)

Budel¹,

Raman

Monteiro³

et al. 2018

Microscopy Res & Technique

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Chemical, Antioxidant, and Antimicrobial Evaluation of Essential Oils and an Anatomical Study of the Aerial Parts from Baccharis Species (Asteraceae)

Zuccolotto

Bressan

Lourenço

et al. 2019

Chemistry & Biodiversity

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The aim of this study was to evaluate the chemical, antioxidant, and antimicrobial activity of the essential oils as well as the anatomy of the aerial parts from Baccharis aracatubaensis, Baccharis burchellii, and Baccharis organensis owing to the therapeutic potential of Baccharis. The volatile constituents were analyzed using GC/MS, the antioxidant activity was evaluated by oxygen radical absorbance capacity (ORAC FL ) and DPPH assays, and the antimicrobial activity by a microdilution technique. Of the 56 compounds identified, only seven (β-caryophyllene, γ-muurolene, bicyclogermacrene, β-germacrene, spathulenol, τ-muurolol, and α-cadinol) were common in the three specimens studied. Of these, γ-muurolene was found abundantly in B. aracatubaensis, while bicyclogermacrene was abundant in B. burchellii and B. organensis. The essential oils exhibited antioxidant activity in the ORAC FL (> 500.0 μmol TE g À 1 ) and DPPH assays. However, they did not exhibit any antimicrobial activity. Secretory ducts and flagelliform glandular trichomes were observed in the anatomical study of all the Baccharis species studied.

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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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Comparative analytical micrographs of “vassouras” (Baccharis, Asteraceae)

Cited by 25 publications

References 18 publications

Foliar anatomy and microscopy of six Brazilian species of Baccharis (Asteraceae)

Foliar anatomy and microscopy of six Brazilian species of Baccharis (Asteraceae)

Chemical, Antioxidant, and Antimicrobial Evaluation of Essential Oils and an Anatomical Study of the Aerial Parts from Baccharis Species (Asteraceae)

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

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