Different Mutations Providing Target Site Resistance to ALS- and ACCase-Inhibiting Herbicides in Echinochloa spp. from Rice Fields
نویسندگان
چکیده
Echinochloa spp. is one of the most invasive weeds in rice fields worldwide. Acetolactate synthase (ALS) and acetyl-CoA carboxylase (ACCase) inhibiting herbicides are two widely used herbicides. However, overuse has led to resistance evolution penoxsulam (ALS-inhibitor) cyhalofop-methyl (ACCase-inhibitor). In this work, 137 different populations were collected Extremadura (western Spain) where lack control was detected. Target-site based (by sequencing ALS ACCase gene) characterization species at molecular level (based on PCR-RFLP analyses) carried out those populations. Most studied (111 137) belong E. oryzicola/E. oryzoides group. Three-point mutations identified genes: Pro197Ser, Pro197Thr, Ser653Asn, first being frequent substitution resistant plants. gene, Ile1781Leu found. both sequencing, evidence heterozygosity also observed. To assess whether cross-resistance patterns differed between mutations, belonging group had its (Pro197Ser, population ech3-14 Ile1781Leu, ech114-10) chosen be a dose-response assay. It confirmed that Pro197Ser conferred triazolopyrimidine, imidazolinone, sulfonylurea, pyrimidinyl benzoate families. On other hand, change gave aryloxyphenoxypropionate cyclohexanedione Of authorized Spain, more 80% these therefore important farmers carry an integrated system combines chemical non-chemical tools.
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ژورنال
عنوان ژورنال: Agriculture
سال: 2021
ISSN: ['2077-0472']
DOI: https://doi.org/10.3390/agriculture11050382