Antifungal effects of n-hexane extract and essential oil of Drimys winteri bark against Take-All disease

Monsálvez, Manuel; Zapata, Nelson; Vargas, Marisol; Berti, Marisol T.; Bittner, M.; Hernández, Vı́ctor

doi:10.1016/j.indcrop.2009.10.013

Cited by 34 publications

(36 citation statements)

References 25 publications

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“…Promising results from the study of D. winteri bark on Ggt indicate that the tree's compounds have high fungicide activity (Monsálvez et al, 2010). Without extraction, D. winteri ground bark has growth inhibitory effects on Ggt at very low concentrations (< 0.4%).…”

Section: Discussionmentioning

confidence: 99%

Crude extracts of Drimys winteri bark to inhibit growth of Gaeumannomyces graminis var. tritici

Zapata¹,

Vargas²,

Monsálvez³

et al. 2011

Chilean J. Agric. Res.

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The aim of this study was to assess the effect of Drimys winteri J.R. Forst. & G. Forst. bark and its extracts, obtained sequentially with n-hexane, acetone, and methanol, against Gaeumannomyces graminis var. tritici (Ggt). Ground bark of D. winteri was mixed with potato dextrose agar growth media at concentrations of 250, 500, 1000, 2000, and 4000 mg L -1 in Petri plates. Each extract was mixed at concentrations of 100, 200, 400, and 800 mg L -1 . Petri plates were inoculated in the center with a 5-mm mycelium disk and were incubated at 24 ± 1 ºC. Daily measurements of mycelium radial growth were taken to determine growth rate and growth inhibition (%). A ground bark concentration of 978 mg L -1 was needed to inhibit Ggt growth by 50%, while extracts obtained with n-hexane and acetone only required 198 and 234 mg L -1 , respectively. The methanol extract only inhibited Ggt growth by 33% when tested at the highest concentration. In conclusion, ground bark and crude extracts, obtained sequentially with n-hexane, acetone, and methanol, from D. winteri bark inhibit Ggt growth when applied in vitro. The n-hexane extract showed the highest inhibitory growth activity.

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Section: Discussionmentioning

confidence: 99%

Crude extracts of Drimys winteri bark to inhibit growth of Gaeumannomyces graminis var. tritici

Zapata¹,

Vargas²,

Monsálvez³

et al. 2011

Chilean J. Agric. Res.

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“…Diterpenoid 1 (Cotoras et al, 2004) and bicyclic sesquiterpenic alcohol (2) are toxic to Botrytis (Ortíz-Nuñez et al, 2007). Other terpenes are 15,16-dihydroxypimar-8(14)-en-3-one (3), fungicide against Colletotrichum gloeosporioides (Peraza-Sánchez et al, 2005) and the sesquiterpenes polygodial (4), drimenol, drimenin, and isodrimenol that inhibited the growth of Gaeumannomyces graminis (Monsálvez et al, 2010). Compound 1 produces permeabilization of the cell membrane of B. cinerea through the induction of p-nitrophenyl butyrate esterase and laccase production (Cotoras et al, 2004).…”

Section: Compounds With Fungicide Activitymentioning

confidence: 99%

Plant-Derived Natural Products From the American Continent for the Control of Phytopathogenic Fungi: A Review

Ramirez-Mares¹,

Hernández-Carlos²

2015

JGIASS

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Various pathogenic microorganisms affect plants. However, most diseases are caused by fungi, which have an enormous reproductive capacity and possess metabolic mechanisms capable to develop resistance to commercial fungicides. Fungi produce mycotoxins on crops and this represents a considerable risk to human and animal health. The most important genera of phytopathogenic fungi of the American continent are: Aspergillus, Alternaria, Botrytis, Colletotrichum, Fusarium, Phytophthora, Penicillium and Pythium, among others. Different strategies have been used for phytopatogenic fungi control, mainly by using synthetic fungicides. Currently, a great deal of attention has been paid towards exploitation of higher plant products as an innovative alternative in crops protection. The use of plant derived natural products has many advantages, such as little or no harmful side effects, rare cases of resistance, long-term control and completely or substantially eliminates the use of synthetic fungicides. Several plants belonging to the Anacardiaceae, Asteraceae, Caprifoliaceae, Lamiaceae, Liliaceae, Papilionacea, Poaceae, Verbenaceae, families, have showed fungicide potential. Therefore, this review addresses occurrence of the most important phytopatogenic fungi and the current state of research regarding the potential of vegetable biodiversity in the development of plant derived natural products for the management of these pathogens in the American continent.

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“…Esto puede deberse a que este tipo de extractos es una mezcla compleja de diversos metabolitos (Rodríguez et al, 2005) con conocida actividad antimicrobiana (Monsálvez et al, 2010), por lo cual su degradación en el suelo es muy lenta. El efecto fitotóxico prolongado de este extracto aplicado al suelo podría representar una ventaja importante para algunas aplicaciones prácticas como desinfección de sustratos de cultivo.…”

Section: Bioensayos En Sustrato De Cultivounclassified

Actividad fitotóxica de un extracto N-Hexano obtenido de la corteza de Drimys Winteri sobre cuatro especies de malezas

2011

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El objetivo de esta investigación fue determinar el efecto fitotóxico de un extracto obtenido con n-hexano de la corteza de Drimys winteri sobre la germinación y el crecimiento de Convolvulus arvensis, Setaria pumila, Daucus carota y Cichorium intybus. El efecto fitotóxico del extracto sobre la germinación de las malezas se determinó mediante bioensayos en placas de Petri y la aplicación del extracto en el medio de germinación en concentraciones de 100 a 1.000 mg L-1. En bioensayos en macetas, se determinó el efecto fitotóxico del extracto sobre la emergencia y crecimiento de las plántulas de malezas, en los cuales se aplicó el extracto mezclado con el sustrato de cultivo en concentraciones de 500 a 4.000 mg kg-1. También se determinó el efecto fitotóxico del extracto asperjado sobre plantas de malezas en concentraciones de 800 a 6.400 mg L-1. En los ensayos de germinación, el extracto retrasó la germinación y redujo el crecimiento de tallo y radícula de todas las malezas, el porcentaje de germinación disminuyó en todas las malezas, excepto en C. arvensis. La aplicación del extracto al sustrato de cultivo disminuyó y retrasó la emergencia de todas las malezas. Las plantas tratadas con extracto presentaron menor altura y hubo disminución de la biomasa acumulada. De igual modo, la aplicación del extracto al follaje de las malezas redujo la altura y la biomasa acumulada y llegó a causar la muerte de C. intybus, S. pumila y D. carota.

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Antifungal effects of n-hexane extract and essential oil of Drimys winteri bark against Take-All disease

Cited by 34 publications

References 25 publications

Crude extracts of Drimys winteri bark to inhibit growth of Gaeumannomyces graminis var. tritici

Crude extracts of Drimys winteri bark to inhibit growth of Gaeumannomyces graminis var. tritici

Plant-Derived Natural Products From the American Continent for the Control of Phytopathogenic Fungi: A Review

Actividad fitotóxica de un extracto N-Hexano obtenido de la corteza de Drimys Winteri sobre cuatro especies de malezas

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