Leaf essential oils and volatiles, histochemistry and micromorphology of Neomitranthes obscura (DC.) N. Silveira (Myrtaceae) growing in sandy coastal plains of Rio de Janeiro

Victório, Cristiane Pimentel; Azevedo, Aline Carvalho de; Silveira, Eliza G.P. da; Souza, Marcelo da Costa; Sato, Alice; Gama, Paola E.; Bizzo, H. R.; Arruda, Rosani do Carmo de Oliveira

doi:10.1016/j.bse.2018.03.010

Cited by 7 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For instance, the preserved area of Marambaia restinga in Rio de Janeiro houses a wide diversity of plant species belonging to this family, and are present in seven of the eleven plant formations defined in the restingas 15 , 16 , 17 . Numerous species are also found in Grumari restinga, which, despite being located in an urban area and being subject to anthropic activity, still houses remnants of the restinga 18 . Several species of plants from Myrtaceae are used for medicinal purposes, including the treatment of gastrointestinal disorders, hemorrhagic conditions, and infectious diseases, and it is thought that the underlying mechanism of action is related to the astringent properties of the plants.…”

Section: Introductionmentioning

confidence: 99%

Larvicidal activity of plants from Myrtaceae against Aedes aegypti L. and Simulium pertinax Kollar (Diptera)

Carneiro

Lucena

Figueiró

et al. 2021

Rev. Soc. Bras. Med. Trop.

Self Cite

View full text Add to dashboard Cite

INTRODUCTION: Despite their widespread usage, synthetic insecticides and larvicides are harmful for controlling disease-causing mosquitoes owing to the development of resistance. The leaves of Eugenia astringens , Myrrhinium atropurpureum , and Neomitranthes obscura were collected from Marambaia and Grumari restingas. The safety and larvicidal efficacy of their extracts were tested against Aedes (Stegomyia) aegypti L. and Simulium (Chirostilbia) pertinax Kollar. METHODS: The dry leaves were subjected to static maceration extraction using 90% methanol. A. aegypti and S. pertinax larvae were exposed to 7.5, 12.5, and 25.0 µL/mL of the extracts (n= 30). The larvicidal activity after 24 h and 48 h, and the mortality, were determined. The median lethal concentration (CL 50 ) was estimated by a Finney's probit model. RESULTS: M. atropurpureum and E. astringens extracts exhibited the strongest larvicidal effects against A. aegypti . M. atropurpureum extracts (25 µL/mL) caused mortalities of over 50% and 100% after 24 h and 48 h, respectively (CL 50 = 11.10 and 9.68 ppm, respectively). E. astringens extracts (25 µL/mL) caused mortalities of 50% and 63.33% after 24 h and 48 h, respectively. High concentrations of N. obscura extracts induced a maximum mortality of 46.66% in A. aegypti larvae after 48 h (CL 50 = 25 ppm). The larvae of S. pertinax showed 100% mortality following exposure to all the plant extracts at all the tested concentrations after 24 h. CONCLUSIONS: The extracts of M. atropurpuerum exhibited the strongest larvicidal activity against A. aegypti . The larvae of S. pertinax were sensitive to all the extracts at all the tested concentrations.

show abstract

Section: Introductionmentioning

confidence: 99%

Larvicidal activity of plants from Myrtaceae against Aedes aegypti L. and Simulium pertinax Kollar (Diptera)

Carneiro

Lucena

Figueiró

et al. 2021

Rev. Soc. Bras. Med. Trop.

Self Cite

View full text Add to dashboard Cite

show abstract

“…A natureza deste não foi investigada, porém, são citados na literatura que este material é composto principalmente de óleos essenciais [23] .…”

Section: Resultsunclassified

“…A presença de cavidades secretoras é considerada como uma característica marcante para espécies pertencentes à família Myrtaceae [2,20,21] . Estas sintetizam e/ou acumulam substâncias químicas de composição variada, sendo os óleos essenciais apresentando interesse econômico principalmente na indústria (cosméticos, aromatizantes, medicamentos, perfumes, antimicrobiana dentre outros) e ecológico como para de atração de polinizadores e proteção contra predadores [22,23] .…”

Section: Introductionunclassified

Ontogenia das cavidades secretoras de onze espécies de Myrtaceae

Ribeiro¹,

Silva

2021

View full text Add to dashboard Cite

Cavidades secretoras são constantemente citadas entre espécies da família Myrtaceae. As cavidades secretoras possuem origens diversas, podendo ser oriundas do afastamento de células (esquizógena), de morte celular programada (lisígena) ou da combinação destes dois processos (esquizolisígena). Este trabalho descreve a ontogenia das cavidades presentes nas folhas de onze espécies da família Myrtaceae. Foram utilizados ápices vegetativos de espécimes ocorrentes na região dos municípios de Itutinga e Sete Lagoas, Minas Gerais. As amostras foram fixadas em FAA70, estocadas em etanol 70%, desidratadas em série etílica e incluídas em metacrilato. Cortes transversais e longitudinais de 6 a 8 µm de espessura foram obtidos em micrótomo rotativo de avanço automático. Os cortes foram corados com Azul de Toluidina para caracterização estrutural. Lâminas permanentes foram montadas com resina sintética. As cavidades apontam para uma origem no meristema fundamental, apresentando paredes finas e citoplasma denso, e com intensa atividade de divisão celular, originando de forma precoce o epitélio secretor com células caracteristicamente achatadas. O afastamento das células no interior da cavidade ocorre conseguinte à formação do epitélio secretor. Ao final do processo de formação, as cavidades passam por um evento de apoptose, em que células do seu interior são degradadas, caracterizando a esquizolisigenia.

show abstract

“…The nanoemulsion is a product of operational simplicity, is effective, has a low cost of production, and allows the dispersion of lipophilic agents, such as essential oils, in aquatic environments, presenting itself ideally for the control of mollusks of medical interest. The extremely low droplet size provides greater resistance to the effects of cremation and sedimentation, suggesting good physicochemical stability (Victório et al, 2018;Araújo et al, 2019;Feng et al, 2021).…”

Section: Figurementioning

confidence: 99%

Molluskicidal nanoemulsion of Neomitranthes obscura (DC.) N. Silveira for schistosomiasis control

Rangel

Machado²,

Amaral³

et al. 2023

Front. Pharmacol.

View full text Add to dashboard Cite

Schistosomiasis is caused by the parasite Schistosoma mansoni, which uses mollusks of the Biomphalaria genus as intermediate hosts. In 2020, approximately 241 million people worldwide underwent treatment for schistosomiasis. For this reason, the World Health Organization encourages research on alternative molluskicides based on plant species. The objective of this work was to investigate Neomitranthes obscura essential oil from leaf chemical composition and its essential oil nanoemulsion activity on intermediate hosts of schistosomiasis Biomphalaria glabrata control. The major chemical components of the Neomitranthes obscura essential oil were zonarene, seline-3,7(11)-diene, β-selinene, and α-selinene. The nanoemulsion tested using 24-well plate methodology showed lethality and juvenile mollusks with LC90 values of 53.9 and 25.0 ppm after 48 h, respectively, and on their spawning with an LC90 of 66.2 ppm after 48 h. Additionally, the nanoemulsion exhibited an LC90 value against the infective form of the parasite Schistosoma mansoni of 11.5 ppm after 4 h. This pharmaceutical formulation acted inhibiting the acetylcholinesterase activity and was not toxic for Mellanoides sp. This result suggests the use of this nanoformulation as a promising alternative in the control of Biomphalaria glabrata and the transmission of schistosomiasis.

show abstract

Leaf essential oils and volatiles, histochemistry and micromorphology of Neomitranthes obscura (DC.) N. Silveira (Myrtaceae) growing in sandy coastal plains of Rio de Janeiro

Cited by 7 publications

References 22 publications

Larvicidal activity of plants from Myrtaceae against Aedes aegypti L. and Simulium pertinax Kollar (Diptera)

Larvicidal activity of plants from Myrtaceae against Aedes aegypti L. and Simulium pertinax Kollar (Diptera)

Ontogenia das cavidades secretoras de onze espécies de Myrtaceae

Molluskicidal nanoemulsion of Neomitranthes obscura (DC.) N. Silveira for schistosomiasis control

Contact Info

Product

Resources

About