Anatomical Characters of Leave and Stem of Calea serrata Less., Asteraceae

Camilotti, J. G.; Biu, Ciane Costa; Farago, Paulo Vítor; Santos, Vera Lúcia Pereira dos; Franco, Célia Regina Cavichiolo; Budel, Jane Manfron

doi:10.1590/s1516-8913201402346

Cited by 13 publications

(7 citation statements)

References 22 publications

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“…5A-D). Cavities, ducts, idioblasts, as well as glandular trichomes were observed in and on the leaves of many Compositae members (Milan et al, 2006;Duarte et al, 2011;Camilotti et al, 2014). Essential oils, resins, lipids, alkaloids, sesquiterpene lactones, tannins, pectinlike substances and flavonoids are the dominant products of glands and ducts (Bartoli et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Anatomical characteristics of Xeranthemum L. (Compositae) species: taxonomical insights and evolution of life form

Gavrilović¹,

Rančić²,

Škundrić³

et al. 2019

PAK.J.BOT.

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Comparative anatomical and micromorphological analyses of root, stem, peduncle, leaf and inflorescence have been conducted on two Xeranthemum species, X. annuum and X. cylindraceum, by light microscopy (LM) and scanning electron microscopy (SEM). The main goal of the study was to examine the most important anatomical features and to find new valid taxonomic delimiting characters for the first time in both species. Regarding vegetative organs anatomy, the data obtained in this study indicated that both species possessed secondary tissues in the root, although these plants are annual. Also, stem anatomy was a typical of the Compositae family members, and anomocytic stomata type and dorsiventral leaf structure were present. On the involucral bracts surface crystals were noticeable, while highly developed multilayer sclerenchyma was present in the mesophyll. Palea anatomy was very similar to bract anatomy. Some floral features were as follows: lateral anther dehiscence, corolla composed of uniseriate epidermis and with a homogeneous parenchyma in the mesophyll, inferior ovary and anatropous ovule with basal placentation. The specific quantitative characters that were different between the examined species were emphasized. Some selected, well defined qualitative anatomical characters (e.g. shape of the young stem and peduncle cross-sections, type of glandular trichomes and cortical vascular bundles occurrence), on the basis of which the studied species were distinguishable, strengthen the taxonomy of the Xeranthemum genus and provide features for better identification of the taxa. This is the first study of the anatomy of Xeranthemum species and some of the characters found (secondary growth and dorsiventral leaves) points towards an adaptation of mesophilous ancestors to xeric habitats in Xeranthemum.

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Section: Discussionmentioning

confidence: 99%

Anatomical characteristics of Xeranthemum L. (Compositae) species: taxonomical insights and evolution of life form

Gavrilović¹,

Rančić²,

Škundrić³

et al. 2019

PAK.J.BOT.

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“…Cavities, ducts, idioblasts and glandular trichomes are found inside and on the leaves of many Compositae members [39][40][41]. In the whole Compositae family, essential oils, resins, alkaloids, lipids, tannins, pectin-like substances, flavonoids and sesquiterpene lactones are the main products located mostly in ducts and glands [42].…”

Section: Discussionmentioning

confidence: 99%

Leaf micromorphology, antioxidative activity and a new record of 3-deoxyamphoricarpolide of relict and limestone endemic Amphoricarpos elegans Albov (compositae) from Georgia

Gavrilović

Tešević

Ðorđević

et al. 2018

ARCH BIOL SCI BELGRA

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We examined for the first time the leaf micromorphology, phytochemistry and biological activity of the rare and stenoendemic Amphoricarpos elegans Albov (Compositae) from Georgia. Scanning electron microscopy (SEM) revealed the presence of glandular trichomes on the leaves, which appeared as glandular dots that are considered the main sites of biosynthesis and accumulation of sesquiterpene lactones. Using high-performance liquid chromatography (HPLC) and nuclear magnetic resonance (NMR) spectroscopy analyses, we identify and characterized 3-deoxyamphoricarpolide, a known sesquiterpene lactone for the genus Amphoricarpos Vis. Regarding chemotaxonomic significance, 3-deoxyamphoricarpolide represents a link between Balkan and Caucasian species of the genus. The antioxidative capacity of different leaf extracts, obtained using a Soxhlet extractor, was evaluated by two radical scavenging assays: DPPH (1,1-diphenyl-2-picrylhydrazyl) radical and the 2,2΄-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS), and ferric ion reducing antioxidant power (FRAP). The total phenolic and flavonoid contents were also determined. The highest antioxidative activity and the highest phenolic and flavonoid contents were detected in the methanol fraction, as a result of the contribution of not only phenols, but probably also lactones. The considerable antioxidative potential indicates possible applications in pharmacy and medicine.

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“…Asteraceae include many species of economic interest, many of these are used therapeutically, and consequently their morphology and anatomy have been studied, including the structures responsible for the production, storage and secretion of secondary metabolic compounds (Werker & Fahn, ; Ascensão & Pais, ; Figueiredo & Pais, ; Ascensão et al ., ; Andreucci et al ., ; Camilotti et al ., ). These secretory structures in Asteraceae take the form of glandular trichomes, canals, cavities, laticifers, idioblasts, hydathodes and glandular appendices (Metcalfe & Chalk, ; Carlquist, ; Lestern & Curtis, ; Castro, Leitão Filho & Monteiro, ).…”

Section: Introductionmentioning

confidence: 97%

Histolocalization of chemotaxonomic markers in Brazilian Vernonieae (Asteraceae)

2016

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Vernonieae are well represented in South America by subtribe Lychnophorinae, with 104 Brazilian species, some of them rare and endangered. Lychnophorinae are well known for producing metabolites of high pharmaceutical and chemotaxonomic value. Despite the importance of secondary metabolites in Lychnophorinae, there is still little evidence regarding the secretory structures responsible for producing these compounds. Therefore, in this study we investigated 15 species representative of the main lineages of Lychnophorinae, with the following objectives: to identify where the chemotaxonomic markers of Lychnophorinae are secreted and stored and in which developmental stage of the organ these metabolites are found. Samples of stems and leaves were processed according to the usual techniques in plant anatomy. It was found that the main sites of secondary metabolite biosynthesis are glandular trichomes, epidermal cells and parenchyma tissues. Metabolites from glandular trichomes, especially sesquiterpene lactones (STL), are prevalent in the early developmental stages of organs. The metabolite compounds stored in parenchyma tissues are mainly terpenoids, flavonoids and other phenolic compounds; young and expanded leaves are equally rich in metabolites. Thus, the information obtained in this study is essential for conducting chemotaxonomic studies in this group, helping to promote selective collection and conservation of species.

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Anatomical Characters of Leave and Stem of Calea serrata Less., Asteraceae

Abstract: The genus Calea belongs to the tribe Heliantheae and presents about 125 species. Calea serrata, popularly known as erva-de-cobra, chá-amargo and quebra-tudo

Cited by 13 publications

References 22 publications

Anatomical characteristics of Xeranthemum L. (Compositae) species: taxonomical insights and evolution of life form

Anatomical characteristics of Xeranthemum L. (Compositae) species: taxonomical insights and evolution of life form

Leaf micromorphology, antioxidative activity and a new record of 3-deoxyamphoricarpolide of relict and limestone endemic Amphoricarpos elegans Albov (compositae) from Georgia

Histolocalization of chemotaxonomic markers in Brazilian Vernonieae (Asteraceae)

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