Diversity and Spread of Acetolactate Synthase Allelic Variants at Position 574 Endowing Resistance in Amaranthus hybridus in Italy.

ABSTRACT: Poor control of Amaranthus spp. with herbicides inhibiting acetolactate synthase (ALS) has been observed for several years in soybean fields in north-eastern Italy, but to date only a few ALS-resistant populations have been confirmed. An extensive sampling of putatively resistant Amaranthus accessions was completed in the Friuli Venezia Giulia region, across an arable land area of about 3000 km². In total, 58 accessions were tested to confirm their resistance status, recognize the Amaranthus species, identify the mutant ALS alleles endowing the resistance and determine the efficacy of 3 pre-emergence herbicides. Most accessions resulted in cross-resistance to thifensulfuron-methyl and imazamox. Genomic DNA were extracted from single seeds with a newly

SUBMITTER: Milani A 

PROVIDER: S-EPMC9860533 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature