Distribution of Pollen Types in Vernonia (Vernonieae: Compositae)

Keeley, Sterling C.; Jones, Sarah Bruyn

doi:10.2307/2418418

Cited by 94 publications

(83 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…according to Vega and Dematteis (2010)] belongs to the plant family Asteraceae and is popularly known as "assa-peixe". Due to the complexity of the Vernonia Genus, including around 1000 species (Keeley and Jones, 1979), Robinson (1999) segregated most of its South America species in 22 new genera, including Vernonathura, and after Vernonia polyanthes was combined as Vernonanthura polyanthes (Vega and Dematteis, 2010), the focus of this work. Metabolomic investigation corroborates the taxonomical classification, suggesting that Vernonia polyanthes should be considered as belonging to the Vernonanthura genus (Martucci et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Vernonanthura polyanthes leaves aqueous extract enhances doxorubicin genotoxicity in somatic cells of Drosophila melanogaster and presents no antifungal activity against Candida spp.

et al. 2016

View full text Add to dashboard Cite

Vernonanthura polyanthes (Spreng.) A.J. Vega & Dematt. (Asteraceae), known as "assa-peixe", has been used in ethnomedicine for the treatment of various diseases such as bronchitis, pneumonia, hemoptysis, persistent cough, internal abscesses, gastric and kidney stone pain. Moreover, some studies demonstrated that species of Genus Vernonia present antifungal activity. Due to the biological relevance of this species, the aim of this study was to investigate the toxic, genotoxic, antigenotoxic and antifungal potential of V. polyanthes leaves aqueous extract in somatic cells of Drosophila melanogaster or against Candida spp. The aqueous extract of the plant showed no toxic, genotoxic and antigenotoxic activity in the experimental conditions tested using the wing somatic mutation and recombination test (SMART/wing). However, when the extract was associated with doxorubicin, used in this work as a positive control, the mutagenic potential of doxorubicin was enhanced, increasing the number of mutations in D. melanogaster somatic cells. In the other hand, no inhibitory activity against Candida spp. was observed for V. polyanthes leaves aqueous extract using agar-well diffusion assay. More studies are necessary to reveal the components present in the V. polyanthes leaves aqueous extract that could contribute to potentiate the doxorubicin genotoxicity.Keywords: assa-peixe, Asteraceae, Cerrado, SMART/wing test, Vernonia polyanthes.O extrato aquoso das folhas de Vernonanthura polyanthes potencializa a genotoxicidade da doxorrubicina em células somáticas de Drosophila melanogaster e não apresenta atividade antifúngica contra Candida spp. ResumoVernonanthura polyanthes (Spreng.) A.J. Vega & Dematt. (Asteraceae), conhecida como "assa-peixe", tem sido utilizada na medicina popular para o tratamento de várias doenças, como bronquite, pneumonia, hemoptise, tosse persistente, abcessos internos, afecções gástricas e cálculo renal. Além disso, alguns estudos já demonstraram que espécies do Gênero Vernonia apresentam atividade antifúngica. Devido à relevância biológica dessa espécie, o objetivo deste estudo foi investigar os efeitos citotóxico, genotóxico, antigenotóxico e antifúngico do extrato aquoso das folhas de V. polyanthes em células somáticas de Drosophila melanogaster ou contra Candida spp. O extrato aquoso da planta não apresentou atividade citotóxica, genotóxica e antigenotóxica nas condições experimentais testadas usando o teste de recombinação e mutação somática em asa (SMART-asa). No entanto, quando o extrato foi associado com a doxorrubicina, utilizada neste trabalho como controle positivo, o potencial mutagênico da doxorrubicina foi potencializado, aumentando oBraz.

show abstract

Section: Introductionmentioning

confidence: 99%

Vernonanthura polyanthes leaves aqueous extract enhances doxorubicin genotoxicity in somatic cells of Drosophila melanogaster and presents no antifungal activity against Candida spp.

et al. 2016

View full text Add to dashboard Cite

show abstract

“…cover creating a lophate pattern in tricolporate grains defmes their types B and C which differ in the pattern of pordl and polar lacunae. Reduction of the colpus as well as the tectum helps defme the remaining three porate types (Keeley and Jones, 1979;. TypeD still has tectum covering the columellae but types E and F have so little tectum that the columellae are exposed.…”

Section: -Vernonieae Ultrastructurementioning

confidence: 99%

Pollen morphology and classification of theVernonieae(Compositae)

Bolick

Keeley

1994

Acta Botanica Gallica

View full text Add to dashboard Cite

“…The most distinctive feature of the Vernonieae is given by the styles, which are slender with filiform, pilose style branches with inner surface completely covered with stigmatic papillae, and a pilose upper shaft. The pollen is highly ornamented, lophate, sublophate, echinate or psilate (Keeley and Jones 1979;Keeley and Robinson 2009). The tribe is rich in genera with only one or two species (about 60 %), clearly reflecting how poorly the relationships between Vernonieae genera and subtribes are understood (Keeley et al 2007;Keeley and Robinson 2009).…”

Section: Introductionmentioning

confidence: 99%