Resistance to Bensulfuron-Methyl in Water Plantain (Alisma plantago-aquatica) Populations from Chilean Paddy Fields

Simple item page
dc.contributor.authorFigueroa, Rodrioro
dc.contributor.authorGebauer, Marlene
dc.contributor.authorFischer, Albert
dc.contributor.authorKogan, Marcelo
dc.date.accessioned2024-01-10T12:42:07Z
dc.date.available2024-01-10T12:42:07Z
dc.date.issued2008
dc.description.abstractBensulfuron-methyl (BSM) has been one of the most widely used herbicides in Chilean rice fields because it controls a wide spectrum of weeds and does not require field drainage for application. However, failures of BSM to control water plantain in rice fields have been noted since 2002. We assessed BSM effects on suspected resistant (CU1 and CU2) and Susceptible (AN I) water plantain accessions collected in Chilean rice fields during 2004 and 2005. BSM rates resulting in 50% growth reduction (GR(50)) of CU2 and CU1 plants were 12- and 33-fold higher than for ANI plants, respectively. Acetolactate synthase (ALS) activity assays in vitro Suggested resistance in CU1 and CU2 was due to an ALS enzyme with reduced BSM sensitivity compared to the AN I biotype. Resistance indices (RI), or ratios of the resistant to susceptible I-50 values (BSM rate to inhibit ALS-enzyme activity by, 50%), were 266 (CU2/AN1) and > 38,462 (CU1/AN1). This agreed with in vivo ALS activity assays where RI were 224 (CU2/AN1) and > 8,533 (CU1/AN1). Resistance levels detected in whole-plant or in vivo ALS activity assays were orders of magnitude lower than those detected in in vitro ALS activity studies suggesting nontarget site mechanisms may have mitigated BSM toxicity. However, a consistent ranking of BSM sensitivity levels (AN1 > CU2 > CU1) throughout all three types of assays suggests resistance is primarily endowed by low target site sensitivity. We conclude that Susceptible and resistant water plantain biotypes coexist in Chilean paddies, and the use of integrated weed management involving herbicides with a different mode of action would be imperative to prevent further evolution of resistance to BSM and possibly cross-resistance to other ALS inhibitors. In vitro ALS-enzyme assays provided the best discrimination of resistance levels between biotypes.
dc.description.funderFONDECYT (Chilean fund for science and technology)
dc.fechaingreso.objetodigital2024-05-15
dc.format.extent7 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1614/WT-08-078.1
dc.identifier.eissn1550-2740
dc.identifier.issn0890-037X
dc.identifier.urihttps://doi.org/10.1614/WT-08-078.1
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77483
dc.identifier.wosidWOS:000262239600007
dc.information.autorucAgronomía e Ing. Forestal;Figueroa R;S/I;84197
dc.information.autorucAgronomía e Ing. Forestal;Gebauer M;S/I;100191
dc.information.autorucAgronomía e Ing. Forestal;Kogan M;S/I;98569
dc.issue.numero4
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final608
dc.pagina.inicio602
dc.publisherCAMBRIDGE UNIV PRESS
dc.revistaWEED TECHNOLOGY
dc.rightsregistro bibliográfico
dc.subjectHerbicide resistance
dc.subjectacetolactate synthase
dc.subjectALS inhibitor
dc.subjectsulfonylurea herbicide
dc.subjectALS activity
dc.subjectSYNTHASE-INHIBITING HERBICIDES
dc.subjectRYEGRASS LOLIUM-RIGIDUM
dc.subjectACETOLACTATE SYNTHASE
dc.subjectECHINOCHLOA-PHYLLOPOGON
dc.subjectSULFONYLUREA HERBICIDES
dc.subjectBISPYRIBAC-SODIUM
dc.subjectCROSS-RESISTANCE
dc.subjectMOLECULAR-BASIS
dc.subjectCHLORSULFURON
dc.subjectIMIDAZOLINONE
dc.subject.ods02 Zero Hunger
dc.subject.ods13 Climate Action
dc.subject.odspa02 Hambre cero
dc.subject.odspa13 Acción por el clima
dc.titleResistance to Bensulfuron-Methyl in Water Plantain (Alisma plantago-aquatica) Populations from Chilean Paddy Fields
dc.typeartículo
dc.volumen22
sipa.codpersvinculados84197
sipa.codpersvinculados100191
sipa.codpersvinculados98569
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Resistance to Bensulfuron-Methyl in Water Plantain (Alisma plantago-aquatica) Populations from Chilean Paddy Fields.pdf
Size:
104.95 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Artículos de revistas