Influence of the rhizosphere in a biopurification system on the dissipation of a pesticide mixture

In a biopurification system such as a biobed, the rhizosphere of the grass layer may be a significant factor for promoting pesticide dissipation in the biomixture. The rhizosphere effect of a Lolium perenne, Festuca arundinacea and Trifolium repens mixture on the dissipation of a pesticide combinati...

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Autores principales:	Urrutia,C, Rubilar,O, Tortella,G, Castillo,J. M, Romero,E, Azcón,R, Castillo,M. del P, Diez,M. C
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2015
Materias:	Rhizosphere pesticide dissipation biopurification phenoloxidase
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000400008
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spelling	oai:scielo:S0718-951620150004000082016-01-14Influence of the rhizosphere in a biopurification system on the dissipation of a pesticide mixtureUrrutia,CRubilar,OTortella,GCastillo,J. MRomero,EAzcón,RCastillo,M. del PDiez,M. C Rhizosphere pesticide dissipation biopurification phenoloxidase In a biopurification system such as a biobed, the rhizosphere of the grass layer may be a significant factor for promoting pesticide dissipation in the biomixture. The rhizosphere effect of a Lolium perenne, Festuca arundinacea and Trifolium repens mixture on the dissipation of a pesticide combination that was composed of atrazine, chlorpyrifos and isoproturon was studied. The assay was performed using glass pots divided into two separate compartments (root surface and root-free), each filled with an organic biomixture (oat husk, top soil and peat) and contaminated with the pesticide mixture at 5 mg kg-1.Non-planted and non-contaminated pots were also used as controls. The results indicated that there were high atrazine, chlorpyrifos and isoproturon dissipation in the planted pots compared with the unplanted pots. An inverse correlation was found throughout the assay between phenoloxidase activity and residual pesticide (0.684 to 0.952). Indeed, fungal biomass was positively correlated with phenoloxidase activity on day 1 (r =0.825) and day 30 (r =0.855). Besides, exudation of oxalic and malic acid in contaminated pots was higher than in the control without pesticides, associated with oxidation of the pesticide mixture in the biomixture of a bioded system. Therefore, the grass layer enhances pesticide removal in biobeds.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.15 n.4 20152015-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000400008en10.4067/S0718-95162015005000063
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Rhizosphere pesticide dissipation biopurification phenoloxidase
spellingShingle	Rhizosphere pesticide dissipation biopurification phenoloxidase Urrutia,C Rubilar,O Tortella,G Castillo,J. M Romero,E Azcón,R Castillo,M. del P Diez,M. C Influence of the rhizosphere in a biopurification system on the dissipation of a pesticide mixture
description	In a biopurification system such as a biobed, the rhizosphere of the grass layer may be a significant factor for promoting pesticide dissipation in the biomixture. The rhizosphere effect of a Lolium perenne, Festuca arundinacea and Trifolium repens mixture on the dissipation of a pesticide combination that was composed of atrazine, chlorpyrifos and isoproturon was studied. The assay was performed using glass pots divided into two separate compartments (root surface and root-free), each filled with an organic biomixture (oat husk, top soil and peat) and contaminated with the pesticide mixture at 5 mg kg-1.Non-planted and non-contaminated pots were also used as controls. The results indicated that there were high atrazine, chlorpyrifos and isoproturon dissipation in the planted pots compared with the unplanted pots. An inverse correlation was found throughout the assay between phenoloxidase activity and residual pesticide (0.684 to 0.952). Indeed, fungal biomass was positively correlated with phenoloxidase activity on day 1 (r =0.825) and day 30 (r =0.855). Besides, exudation of oxalic and malic acid in contaminated pots was higher than in the control without pesticides, associated with oxidation of the pesticide mixture in the biomixture of a bioded system. Therefore, the grass layer enhances pesticide removal in biobeds.
author	Urrutia,C Rubilar,O Tortella,G Castillo,J. M Romero,E Azcón,R Castillo,M. del P Diez,M. C
author_facet	Urrutia,C Rubilar,O Tortella,G Castillo,J. M Romero,E Azcón,R Castillo,M. del P Diez,M. C
author_sort	Urrutia,C
title	Influence of the rhizosphere in a biopurification system on the dissipation of a pesticide mixture
title_short	Influence of the rhizosphere in a biopurification system on the dissipation of a pesticide mixture
title_full	Influence of the rhizosphere in a biopurification system on the dissipation of a pesticide mixture
title_fullStr	Influence of the rhizosphere in a biopurification system on the dissipation of a pesticide mixture
title_full_unstemmed	Influence of the rhizosphere in a biopurification system on the dissipation of a pesticide mixture
title_sort	influence of the rhizosphere in a biopurification system on the dissipation of a pesticide mixture
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000400008
work_keys_str_mv	AT urrutiac influenceoftherhizosphereinabiopurificationsystemonthedissipationofapesticidemixture AT rubilaro influenceoftherhizosphereinabiopurificationsystemonthedissipationofapesticidemixture AT tortellag influenceoftherhizosphereinabiopurificationsystemonthedissipationofapesticidemixture AT castillojm influenceoftherhizosphereinabiopurificationsystemonthedissipationofapesticidemixture AT romeroe influenceoftherhizosphereinabiopurificationsystemonthedissipationofapesticidemixture AT azconr influenceoftherhizosphereinabiopurificationsystemonthedissipationofapesticidemixture AT castillomdelp influenceoftherhizosphereinabiopurificationsystemonthedissipationofapesticidemixture AT diezmc influenceoftherhizosphereinabiopurificationsystemonthedissipationofapesticidemixture
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Influence of the rhizosphere in a biopurification system on the dissipation of a pesticide mixture

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