Target-Site ACCase-Resistant Johnsongrass (Sorghum halepense) Selected in Summer Dicot Crops (Articolo in rivista)

Type
Label
  • Target-Site ACCase-Resistant Johnsongrass (Sorghum halepense) Selected in Summer Dicot Crops (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1614/WT-D-13-00137.1 (literal)
Alternative label
  • Scarabel, L.; Panozzo, S.; Savoia, W.; Sattin, M. (2014)
    Target-Site ACCase-Resistant Johnsongrass (Sorghum halepense) Selected in Summer Dicot Crops
    in Weed technology
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Scarabel, L.; Panozzo, S.; Savoia, W.; Sattin, M. (literal)
Pagina inizio
  • 307 (literal)
Pagina fine
  • 315 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 28 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 9 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Consiglio Nazionale delle Ricerche (CNR); Syngenta Crop Protection (literal)
Titolo
  • Target-Site ACCase-Resistant Johnsongrass (Sorghum halepense) Selected in Summer Dicot Crops (literal)
Abstract
  • Johnsongrass is a troublesome weed infesting spring summer crops. Poor control of johnsongrass after fluazifop-p-butyl treatments has been reported in central to northern Italy. Greenhouse and outdoor dose response experiments revealed that four populations were highly resistant to fluazifop-p-butyl. All four were, cross-resistant to other aryloxyphenoxypropionate (FOP) herbicides propaquizafop, quizalofop, and haloxyfop. The resistance indexes ranged between 8 and 25 for propaquizafop and quizalofop, whereas a greater variability between populations was detected in response to haloxyfop. Conversely, cycloxydim and clethodim determined only a shift in the susceptibility with resistance index (RI) values of 2 to 3. Molecular analyses revealed that resistant plants possessed an insensitive acetyl coenzyme-A carboxylase (ACCase) target enzyme due to an Ile-to-Asn substitution at codon 2041. To our knowledge, this is the first report of such a mutation endowing ACCase resistance in johnsongrass. A molecular marker (CAPS assay) was developed for its rapid detection. Alternative mode of action herbicides S-metolachlor and nicosulfuron controlled all the FOP-resistant populations. Only a few chemical options are still available, and they have different efficacy on germinating seeds and sprouting rhizomes. To maintain efficacy over time, herbicides should be integrated with agronomic practices. (literal)
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