Essential Oil of the Brazilian Native Species <i>Hesperozygis ringens</i>: A Potential Alternative to Control Weeds

Pinheiro, Carlos Garrido; Amaral, Lúcio de Paula; Rolim, Jessica Mengue; Longhi, Solon Jonas; Machado, Sérgio Luiz de Oliveira; Heinzmann, Berta Maria

doi:10.1080/0972060x.2017.1319297

Cited by 14 publications

(7 citation statements)

References 36 publications

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“…Para os demais tratamentos, as soluções foram preparadas de modo que, para cada tratamento, o volume total da solução onde as sementes foram imersas fosse de 5 mL. As sementes foram imersas nas soluções por 2 min e em seguida foram acomodadas em placas de Petri de 9 cm de diâmetro, contendo discos de papel filtro umedecido com 2 mL de água destilada (Pinheiro et al, 2017).…”

Section: Análise Da Atividade Alelopáticaunclassified

“…As placas de Petri foram acondicionadas em sacos plásticos, sendo posteriormente transferidas para uma câmara de germinação BOD a 25 °C (± 1), com fotoperíodo programado em escuro/claro (12 h /12 h). Ao final do sétimo dia de incubação, foram consideradas sementes germinadas aquelas com emissão de epicótilo maior que 2 mm (Pinheiro et al, 2017).…”

Section: Análise Da Atividade Alelopáticaunclassified

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Caracterização química e atividade alelopática do óleo essencial de folhas de Blepharocalyx salicifolius

et al. 2021

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No presente trabalho foi avaliada a composição química e atividade alelopática do óleo essencial (OE) de folhas de Blepharocalyx salicifolius (Kunth) O. Berg sobre a germinação e crescimento inicial de plântulas de Lactuca sativa L. (dicotiledônea) e de Sorghum bicolor (L.) Moench (monocotiledônea). O OE foi obtido por meio de hidrodestilação por 3 h. A análise da composição do OE foi feita por cromatografia gasosa acoplada a um espectrômetro de massas (CG-EM). A atividade alelopática do extrativo foi avaliada nas concentrações de 2,5; 5,0 e 7,5%. As sementes foram imersas nas soluções por 2 min e então foram distribuídas em placas de Petri. As placas foram mantidas em câmara incubadora BOD. No sétimo dia, foram avaliadas as variáveis germinação (%) e comprimento de raízes (cm), da parte aérea (cm) e total da plântula (cm). Os constituintes majoritários identificados no OE foram eucaliptol (49,6%), limoneno (13,6%) e β-cariofileno (12,2%). O OE afetou negativamente a porcentagem de germinação das sementes de L. sativa e os parâmetros sistema radicular e plântula total de S. bicolor. A atividade alelopática do OE foi negativa para as duas espécies avaliadas.

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Section: Análise Da Atividade Alelopáticaunclassified

Caracterização química e atividade alelopática do óleo essencial de folhas de Blepharocalyx salicifolius

et al. 2021

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“…According to Werker (1993), these extractives may present beneficial functions for producer plants as protection against herbivores and pathogens or as attraction of pollinator agents. This way, they often exhibit significant biological effects on different living organisms (Badawy and Abdelgaleil 2014, Pinheiro et al 2017). Confirming this premise, a series of biological activities have already been described for H. ringens essential oil.…”

Section: Introductionmentioning

confidence: 83%

“…Confirming this premise, a series of biological activities have already been described for H. ringens essential oil. In addition, the oxygenated monoterpenoid pulegone has been reported as its major compound and different authors attributed the activities detected for this extractive especially to this molecule (Von Poser et al 1996, Ribeiro et al 2010, Toni et al 2014, Pinheiro et al 2016, 2017. Studies regarding this species as well as other Hesperozygis representatives usually focus on essential oil production, describing their chemical characteristics and possible activities for the plant extractives (Von Poser et al 1996, González-Chavez et al 2011, Martini et al 2011, Castilho et al 2016.…”

Section: Introductionmentioning

confidence: 99%

Structural characterization of vegetative organs of the endangered Brazilian native species Hesperozygis ringens (Benth.) Epling

Pinheiro

Oliveira

Heinzmann

2018

An. Acad. Bras. Ciênc.

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The aim of this study was to describe the structural characterization of Hesperozygis ringens (Benth.) Epling vegetative organs. For this purpose, leaves, stems and roots of the endangered Lamiaceae were collected from a population located in Santo Antão, Santa Maria municipality, Rio Grande do Sul, Brazil. Results demonstrated that the H. ringens leaf blade presents glandular and non-glandular trichomes as well as two morphs of diallelocytic stomata, which are usually found above the epidermis level. The petiole is concave on ventral face and convex on its dorsal face, containing glandular and non-glandular trichomes as well as stomata in the epidermis. These types of trichomes were also detected in the stem. In addition, the presence of intercellular spaces within the organ is highlighted. Stomata above epidermis level also occurred in the stem. Phenolic idioblasts were found in the cortical region of plant root and deposit of lipophilic substance was observed in phloem cells. Great amount of apparently two different crystals were detected in all organs. Information obtained in this study provides knowledge about the characterization of H. ringens, which may be used to distinguish characters of taxa and can help understand the species survival in its occurrence sites.

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“…Many Lamiaceae species have demonstrated allelopathic potential and the evaluation of this effect could lead to future applications (Kekeç et al, 2012). Recently, Hesperozygis ringens (espanta-pulga) was studied as a plant with high allelopathic potential capable of significantly affecting the initial growth of other plants (Pinheiro et al, 2017). Chromatographic analyses report the presence of oxygenated monoterpenes (pulegone) that possibly affect plant development.…”

Section: Introductionmentioning

confidence: 99%

Allelopathic Potential of Hesperozygis ringens Extracts on Seed Germination of Soybeans and Beggarticks

Lima¹,

Lima²,

Birck³

2020

JAS

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Hesperozygis ringens L., popularly known as espanta-pulga, is a native shrub found in rocky fields in Rio Grande do Sul. Its leaves produce a lot of essential oil, which contains pulegone as a main component that may be allelopathic. The objectives of this study were to analyze the allelopathic effects of H. ringens leaf extracts on the germination and initial development of soybean seeds and to evaluate the herbicidal potential of these extracts on beggarticks (Bidens pilosa L.). The seeds were placed on paper embedded in an aqueous extract of H. ringens leaves at concentrations of 0, 25, 50, 75 and 100% and maintained in a germination chamber at 25 °C and a photoperiod of 12 h. The tests included the following: germination, first germination count, germination speed index, and length and dry mass of seedlings. The experimental design was completely randomized. Based on the results, the aqueous extracts of Hesperozygis ringens leaves had a detrimental effect on the germination and seedling growth of the soybeans and beggarticks, evidencing their allelopathic action.

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Essential Oil of the Brazilian Native Species Hesperozygis ringens: A Potential Alternative to Control Weeds

Cited by 14 publications

References 36 publications

Caracterização química e atividade alelopática do óleo essencial de folhas de Blepharocalyx salicifolius

Caracterização química e atividade alelopática do óleo essencial de folhas de Blepharocalyx salicifolius

Structural characterization of vegetative organs of the endangered Brazilian native species Hesperozygis ringens (Benth.) Epling

Allelopathic Potential of Hesperozygis ringens Extracts on Seed Germination of Soybeans and Beggarticks

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