Antifungal activity of wheat root exudate extracts on Gaeumannomyces graminis var. Tritici growth

Wheat (Triticum aestivum L.) is known for its ability to produce and release al-lelopathic compounds, which have potential for controlling weeds and diseases. Previous reports have shown the fungitoxic effects of allelochemicals present in wheat. Thus, these compounds can be exuded by roots to prote...

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Autores principales:	Schalchli,H, Pardo,F, Hormazábal,E, Palma,R, Guerrero,J, Bensch,E
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2012
Materias:	wheat cultivars take-all toxicity allelopathy Chilean wheat
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162012000200012
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spelling	oai:scielo:S0718-951620120002000122012-09-10Antifungal activity of wheat root exudate extracts on Gaeumannomyces graminis var. Tritici growthSchalchli,HPardo,FHormazábal,EPalma,RGuerrero,JBensch,E wheat cultivars take-all toxicity allelopathy Chilean wheat Wheat (Triticum aestivum L.) is known for its ability to produce and release al-lelopathic compounds, which have potential for controlling weeds and diseases. Previous reports have shown the fungitoxic effects of allelochemicals present in wheat. Thus, these compounds can be exuded by roots to protect the tissues directly affected by Gaeumannomyces graminis var. tritici (Ggt) fungus that causes wheat take-all disease. The aim of this research was to evaluate in vitro the allelopathic effect of root exudate extracts from four Chilean wheat cultivars on Ggt growth. Root exudates were released from wheat seedlings to a sterile culture medium without nutrients. Afterward, the exudates in the culture medium were separated by liquid-liquid extraction using ethyl acetate. Eight different concentrations were tested for each cultivar. The results showed that the degree to which the extracts strongly inhibit the phytopathogen growth is highly dependent on both the concentration and the cultivar. The root extract of the Domo cultivar was significantly active against Ggt (MIC=0.36 mg mL-1). IC50 and MIC values obtained for Dollinco and Domo root exudate extracts showed toxicity to Ggt. These findings may be considered in future studies related to the use of allelopathic potential as a selection factor in order to reduce the yield losses caused by various take-all diseases, as an alternative to chemical controls.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.12 n.2 20122012-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162012000200012en10.4067/S0718-95162012000200012
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	wheat cultivars take-all toxicity allelopathy Chilean wheat
spellingShingle	wheat cultivars take-all toxicity allelopathy Chilean wheat Schalchli,H Pardo,F Hormazábal,E Palma,R Guerrero,J Bensch,E Antifungal activity of wheat root exudate extracts on Gaeumannomyces graminis var. Tritici growth
description	Wheat (Triticum aestivum L.) is known for its ability to produce and release al-lelopathic compounds, which have potential for controlling weeds and diseases. Previous reports have shown the fungitoxic effects of allelochemicals present in wheat. Thus, these compounds can be exuded by roots to protect the tissues directly affected by Gaeumannomyces graminis var. tritici (Ggt) fungus that causes wheat take-all disease. The aim of this research was to evaluate in vitro the allelopathic effect of root exudate extracts from four Chilean wheat cultivars on Ggt growth. Root exudates were released from wheat seedlings to a sterile culture medium without nutrients. Afterward, the exudates in the culture medium were separated by liquid-liquid extraction using ethyl acetate. Eight different concentrations were tested for each cultivar. The results showed that the degree to which the extracts strongly inhibit the phytopathogen growth is highly dependent on both the concentration and the cultivar. The root extract of the Domo cultivar was significantly active against Ggt (MIC=0.36 mg mL-1). IC50 and MIC values obtained for Dollinco and Domo root exudate extracts showed toxicity to Ggt. These findings may be considered in future studies related to the use of allelopathic potential as a selection factor in order to reduce the yield losses caused by various take-all diseases, as an alternative to chemical controls.
author	Schalchli,H Pardo,F Hormazábal,E Palma,R Guerrero,J Bensch,E
author_facet	Schalchli,H Pardo,F Hormazábal,E Palma,R Guerrero,J Bensch,E
author_sort	Schalchli,H
title	Antifungal activity of wheat root exudate extracts on Gaeumannomyces graminis var. Tritici growth
title_short	Antifungal activity of wheat root exudate extracts on Gaeumannomyces graminis var. Tritici growth
title_full	Antifungal activity of wheat root exudate extracts on Gaeumannomyces graminis var. Tritici growth
title_fullStr	Antifungal activity of wheat root exudate extracts on Gaeumannomyces graminis var. Tritici growth
title_full_unstemmed	Antifungal activity of wheat root exudate extracts on Gaeumannomyces graminis var. Tritici growth
title_sort	antifungal activity of wheat root exudate extracts on gaeumannomyces graminis var. tritici growth
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162012000200012
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Antifungal activity of wheat root exudate extracts on Gaeumannomyces graminis var. Tritici growth

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