Detecting ALS and ACCase herbicide tolerant accession of Echinochloa oryzoides (Ard.) Fritsch. in rice (Oryza sativa L.) fields |
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| Affiliation: | 1. Ondokuz Mayıs University, Agriculture Faculty, Department of Plant Protection, 55139 Samsun, Turkey;2. Department of Plant and Environmental Sciences, The University of Copenhagen, DK 2630 Taastrup, Denmark;3. Department of Nutrition, Exercise and Sports, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark;1. BioOrganic Mass Spectrometry Laboratory (LSMBO), IPHC, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France;2. IPHC, CNRS, UMR7178, 67087 Strasbourg, France;3. IECB, Université de Bordeaux, IECB, 33607 Pessac, France;4. INSERM U1212, UMR CNRS 5320, 33076 Bordeaux, France;5. CBMN, UMR 5248, CNRS, Université de Bordeaux, INP Bordeaux, 33607 Pessac, France;1. Chemistry Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637009, Sichuan Province, PR China;2. State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, PR China;1. Istituto Oncologico della Svizzera Italiana, Bellinzona, Switzerland;2. Barts Cancer Institute, Queen Mary University of London, London, UK;1. Centro de Informática, Universidade Federal de Pernambuco, Av. Luiz Freire s/n, 50670-901, Recife, PE, Brazil;2. Departamento de Estatística e Informática, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros s/n, Dois Irmãos, 52171-900, Recife, PE, Brazil;1. Unidad PET-CETIR, Esplugues de Llobregat, Barcelona, España;2. Servicio de Medicina Nuclear ERESA, Hospital General Universitario de Valencia, Valencia, España |
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| Abstract: | Inconsistent control of Echinochloa oryzoides has been reported repeatedly by farmers in the major rice growing area of Turkey. Greenhouse studies confirmed the existence of cross and multiple herbicide tolerance of E. oryzoides accessions including acetolactate synthase (penoxsulam, bispyribac-sodium) and acetyl CoA carboxylase (cyhalofob-butyl) inhibiting herbicides. Comparison of 95% lower confidence intervals of ED90 derived from log-logistic dose–response curves, and twice the recommended field rates of the herbicides showed some, but not distinct separation of susceptible and tolerant accessions. We used a novel method to separate heterogeneous data without a priori knowledge of grouping into more than one group. On the basis of the distribution of ED90 it was possible to identify two distinct groups of the 172 accessions tested, 78% were not controlled by ALS inhibitors (penoxsulam, and bispyribac-sodium) at recommended field rates; and 38% were not controlled by the ACCase Inhibitor (cyhalofob-butyl) at twice the field rates. The effective response level of ED90 resulted in 64 and 14 tolerant accessions to ALS and ACCase, respectively. Fourteen accessions showed multiple resistances to ALS and ACCase Inhibitors.Some of the accessions were strongly tolerant to both herbicide modes of action and had 100% survival even at 6 times the recommended rates. Most of these tolerant accessions were from Marmara region, predominantly in Edirne and Balıkesir, which are the regions without any crop rotation. |
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| Keywords: | ALS and ACCase inhibitors Dose response Sensitivity Rice |
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