Determinação de compostos fenólicos e avaliação do potencial genotóxico e antiproliferativo de extratos aquosos das folhas de Psidium cattleianum Sabine (Myrtaceae)

Hister, Carmine Aparecida Lenz; Trapp, Kássia Cauana; Boligon, Aline Augusti; Tedesco, Solange Bósio

doi:10.17058/cp.v31i1.12864

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…Inhibitory effects have also been shown for α-pinene, which reduced early root growth and caused oxidative damage in the root tissue of several target species [38]. Evidence of allelopathic effects in strawberry guava leaves [24,39] points to likely inhibitory effects on native species in invaded plant communities.…”

Section: Study Sitementioning

confidence: 99%

Biochar Rescues Native Trees in a Global Biodiversity Hotspot

Sujeeun¹,

Thomas²

2022

Preprint

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Many tropical invasive species have allelopathic effects that contribute to their success in native plant communities. Pyrolyzed biomass (“biochar”) can sorb toxic compounds, including allelochemicals produced by invasive plants, potentially reducing their inhibitory effects on native species. Strawberry guava (Psidium cattleianum) is among the most important allelopathic invasive species in tropical islands and recognized as the most serious invasive species threat in the global biodiversity hotspot of Mauritius. We investigated the effects of additions of locally produced biochar on native tree species in a field experiment conducted in areas invaded by strawberry guava within Mauritius’ largest national park. Growth and survivorship of native tree species were monitored over 2 ½ years in plots subjected to four treatments: non-weeded, weeded, weeded + 25 t/ha biochar and weeded + 50 t/ha biochar. Native tree growth and survivorship were strongly suppressed by strawberry guava. Biochar treatments dramatically increased native tree performance, with more than a doubling in growth, and substantially increased native tree survivorship and species diversity, while suppressing strawberry guava regeneration, consistent with growth-promoting properties and sorption of allelochemicals. We conclude that biochars, including “sustainable biochars” produced from locally accessible biomass using low-tech pyrolysis systems, have considerable potential to counteract effects of allelopathic invaders and increase the capacity for native species regeneration in tropical island ecosystems.

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Section: Study Sitementioning

confidence: 99%

Biochar Rescues Native Trees in a Global Biodiversity Hotspot

Sujeeun¹,

Thomas²

2022

Preprint

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“…Inhibitory effects have also been shown for αpinene, which reduced early root growth and caused oxidative damage in the root tissue of several target species [27]. Evidence of allelopathic effects in strawberry guava leaves [24,28] points to likely inhibitory effects on native species in invaded plant communities.…”

Section: Introductionmentioning

confidence: 99%

Biochar Rescues Native Trees in the Biodiversity Hotspot of Mauritius

Sujeeun

Thomas

2022

Forests

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Many tropical invasive species have allelopathic effects that contribute to their success in native plant communities. Pyrolyzed biomass (“biochar”) can sorb toxic compounds, including allelochemicals produced by invasive plants, potentially reducing their inhibitory effects on native species. Strawberry guava (Psidium cattleianum) is among the most important allelopathic invasive species on tropical islands and recognized as the most serious threat among invasive species in the global biodiversity hotspot of Mauritius. We investigated the effects of additions of locally produced biochar on native tree species in a field experiment conducted in areas invaded by strawberry guava within Mauritius’ largest national park. Growth and survivorship of native tree species were monitored over 2.5 years in plots subjected to four treatments: non-weeded, weeded, weeded + 25 t/ha biochar, and weeded + 50 t/ha biochar. Native tree growth and survivorship were strongly suppressed by strawberry guava. Biochar treatments dramatically increased native tree performance, with more than a doubling in growth, and substantially increased native tree survivorship and species diversity, while suppressing strawberry guava regeneration, consistent with growth-promoting properties and sorption of allelochemicals. We conclude that biochars, including “sustainable biochars” produced from locally accessible biomass using low-tech pyrolysis systems, have considerable potential to counteract effects of allelopathic invaders and increase the capacity for native species regeneration in tropical island ecosystems.

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“…Fonte: Elaborada pelos autores (2023).A capacidade antiproliferativa/citotóxica das plantas medicinais está relacionada com os medicamentos antineoplásicos, uma vez que o mecanismo de inibição da divisão celular é a chave para bloquear a proliferação descontrolada das células cancerosas (CRAGG;NEWMAN, 2005;HISTER et al, 2017). Dentre os metabolitos secundários presentes na A. chica, os (2010), pesquisando também em camundongos, evidenciou a ausência de toxicidade por meio dos resultados encontrados tanto em tratamento agudo quanto crônico.…”

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Avaliação Da Atividade Citotóxica E Genotóxica De Extratos De Arrabidaea Chica Sobre O Sistema Teste De Allium Cepa

Lima

Araújo

et al. 2023

Edu., Ciência e Saúde

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A Arrabidaea chica é uma planta medicinal utilizada no tratamento de diversas enfermidades, porém ainda são necessários mais estudos sobre a segurança da sua utilização, confirmando se a mesma é ou não citotóxica e/ou genotóxica. O teste Allium cepa é um bioindicador ideal para o primeiro screening da citogenotoxicidade de infusões de plantas medicinais. Por isso, esse trabalho visou avaliar a citogenotoxicidade de extratos da Arrabidaea chica sobre o sistema teste Allium cepa, cujos extratos foram preparados por infusão, decocção e maceração. Inicialmente, foi realizada a triagem fitoquímica e análise do pH dos extratos. Com o teste Allium cepa, foram avaliadas microscópica e estatisticamente aberrações cromossômicas e atividade antiproliferativa, utilizando como controle negativo a água destilada e como controle positivo o metamizol. Observou-se a presença de taninos, alcaloides e flavonoides nos 3 extratos, cujo pH variou entre 6 e 4. Não foram observadas aberrações cromossômicas nos extratos, indicando que esta não é genotóxica. Os extratos resultaram em uma diminuição no índice mitótico, em relação ao controle negativo, indicando que esta planta apresenta efeito citotóxico. Os resultados obtidos foram satisfatórios, contudo, ainda são necessários mais estudos sobre esta planta, como utilizando testes com Artemia Salina.

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Determinação de compostos fenólicos e avaliação do potencial genotóxico e antiproliferativo de extratos aquosos das folhas de Psidium cattleianum Sabine (Myrtaceae)

Cited by 3 publications

References 14 publications

Biochar Rescues Native Trees in a Global Biodiversity Hotspot

Biochar Rescues Native Trees in a Global Biodiversity Hotspot

Biochar Rescues Native Trees in the Biodiversity Hotspot of Mauritius

Avaliação Da Atividade Citotóxica E Genotóxica De Extratos De Arrabidaea Chica Sobre O Sistema Teste De Allium Cepa

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