Anatomy of the underground system in Vernonia grandiflora Less. and V. brevifolia Less. (Asteraceae)

Hayashi, Adriana Hissae; Appezzato‐da‐Glória, Beatriz

doi:10.1590/s1516-89132007000700009

Cited by 36 publications

(25 citation statements)

References 21 publications

(27 reference statements)

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“…In other herbaceous species the xylopodia are associated to other storage organs FRUCTANS IN Dimerostemma vestitum such as tuberous roots (Isejima and FigueiredoRibeiro 1993, Appezzato-da-Glória and Estelita 2000, Hayashi and Appezzato-da-Glória 2007. However, this is not the case of D. vestitum, whose roots are thin and lignified, and produce fructans in low levels similar to the aerial stems.…”

Section: Discussionmentioning

confidence: 99%

Anatomy and fructan distribution in vegetative organs of Dimerostemma vestitum (Asteraceae) from the campos rupestres

Silva¹,

Vilhalva²,

Moraes³

et al. 2015

An. Acad. Bras. Ciênc.

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Among the compounds stored by plants, several functions are assigned to fructans, such as source of energy and protection against drought and extreme temperatures. In the present study we analyzed the anatomy and distribution of fructans in vegetative organs of Dimerostemma vestitum (Asteraceae), an endemic species from the Brazilian campos rupestres. D. vestitum has amphistomatic and pubescent leaves, with both glandular and non-glandular trichomes. In the basal aerial stem the medulla has two types of parenchyma, which differ from the apical portion. The xylopodium has mixed anatomical origin. Interestingly, although inulin-type fructans with high degree of polymerization were found in all analyzed organs except the leaves, the highest amount and maximum degree of polymerization were detected in the xylopodium. Inulin sphero-crystals were visualized under polarized light in the medulla and in the vascular tissues mainly in the central region of the xylopodium, which has abundant xylem parenchyma. Secretory structures accumulating several compounds but not inulin were identified within all the vegetative organs. The presence of these compounds, in addition to inulin, might be related to the strategies of plants to survive adverse conditions in a semi-arid region, affected seasonally by water restriction and frequently by fire.

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Section: Discussionmentioning

confidence: 99%

Anatomy and fructan distribution in vegetative organs of Dimerostemma vestitum (Asteraceae) from the campos rupestres

Silva¹,

Vilhalva²,

Moraes³

et al. 2015

An. Acad. Bras. Ciênc.

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“…was formed through the thickening of the hypocotyl and the upper primary root. Other authors found through the anatomical studies (Paviani, 1977;Appezzato-da-Glória and Estelita, 2000;Hayashi and Appezzato-da-Glória, 2007) …”

Section: Germination Tests Analysis Of Embryo Presence and Tetrazolimentioning

confidence: 92%

Seed germination of Chresta sphaerocephala DC. and Lessingianthus bardanoides (Less.) H. Rob. (asteraceae) from Cerrado

Cury

Novembre

Glória

2010

Braz. arch. biol. technol.

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“…Previous literature on the Cardueae deals mainly with the occurrence of secretory ducts or cavities on aerial organs, especially those of leaves and shoots, and the transition between root and shoot (Col, 1903(Col, , 1904. Details on the structure of the ducts and cavities of subterranean parts have been neglected; there are only a small number of published studies on the subject and they deal mostly with single species (e.g., Ragonese, 1988;Melo-de-Pinna and Menezes, 2002;Hayashi and Appezzato-da-Gloria, 2007). Comparative studies are few.…”

Section: Introductionmentioning

confidence: 99%

Secretory Structures of Subterranean Organs of Some Species of the Cardueae, and Their Diagnostic Value

Fritz¹,

Saukel²

2011

Acta Biologica Cracoviensia Series Botanica

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Secretory ducts and cavities of roots and rhizomes are typical features of the Cardueae tribe in the Asteraceae family. We used light microscopy to analyze the anatomy of the subterranean organs of 21 species of 13 genera of the Cardueae, with particular attention to the secretory system, interpreted in taxonomic terms. The anatomy of secretory ducts varied greatly. A new measurement quotient, C1 [length of epithelial cells (longitudinal section)] and C2 [length of adjacent cells (longitudinal section)] was established. Different types of ducts are described based on type of development and the size ratios among epithelial cells. Detailed anatomical descriptions of the ducts are given, together with their occurrence in particular taxa. The simultaneous presence of various secretory ducts within a single species and their spatial position relative to other prominent anatomical features provide valuable characters for discriminating the studied Cardueae species. These analyses are of particular interest for identification of herbal drugs as, besides chemical analytical techniques such as chromatographic fingerprinting, light microscopy is a common method for purity controls and thus required in official pharmacopeias.K Ke ey y w wo or rd ds s: : Root anatomy, microscopy, Asteraceae, Cardueae, secretory ducts.

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Anatomy of the underground system in Vernonia grandiflora Less. and V. brevifolia Less. (Asteraceae)

Abstract: This work dealt with the anatomy of the underground system in

Cited by 36 publications

References 21 publications

Anatomy and fructan distribution in vegetative organs of Dimerostemma vestitum (Asteraceae) from the campos rupestres

Anatomy and fructan distribution in vegetative organs of Dimerostemma vestitum (Asteraceae) from the campos rupestres

Seed germination of Chresta sphaerocephala DC. and Lessingianthus bardanoides (Less.) H. Rob. (asteraceae) from Cerrado

Secretory Structures of Subterranean Organs of Some Species of the Cardueae, and Their Diagnostic Value

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