Stacked traits conferring multiple resistance to imazamox and glufosinate in soft wheat.
N-acetyl-glufosinate
Triticum aestivum
acetolactate synthase
glutamine synthase
herbicide resistance crops
phosphinothricin acetyl transferase
Journal
Pest management science
ISSN: 1526-4998
Titre abrégé: Pest Manag Sci
Pays: England
ID NLM: 100898744
Informations de publication
Date de publication:
Mar 2019
Mar 2019
Historique:
received:
05
03
2018
revised:
26
07
2018
accepted:
26
07
2018
pubmed:
2
8
2018
medline:
24
4
2019
entrez:
2
8
2018
Statut:
ppublish
Résumé
Conventional crossing of soft wheat cultivars resistant to imazamox and glufosinate resulted in two (Rados and Helter) lines resistant to both herbicides. Stacked traits conferring this dual herbicide resistance in these lines, compared with a susceptible (S) cultivar, were characterized. Rados and Helter lines were ∼ 18-fold more resistant (R) to glufosinate, and between 15.1 and 19.8-fold more resistant to imazamox than the S cultivar. Resistance to glufosinate and imazamox decreased up to 12% and 50%, respectively, when the herbicides were applied sequentially. The basal activities of the acetolactate and glutamine synthases were similar between R and S plants. Rados and Helter lines were 11.7- and 17.7-fold more resistant to imazamox than the S cultivar, due to the Ser653-Asn mutation in their imi-ALS genes. R lines, susceptible to glufosinate at the target site level, showed lower ammonia accumulation evidencing the activity of the phosphinothricin acetyl transferase. Absorption and translocation patterns for Stacked traits conferring dual herbicide resistance to the lines Rados and Helter come from the resistant parents. These R lines are potential tools for weed management in wheat production, mainly via herbicide rotation. © 2018 Society of Chemical Industry.
Sections du résumé
BACKGROUND
BACKGROUND
Conventional crossing of soft wheat cultivars resistant to imazamox and glufosinate resulted in two (Rados and Helter) lines resistant to both herbicides. Stacked traits conferring this dual herbicide resistance in these lines, compared with a susceptible (S) cultivar, were characterized.
RESULTS
RESULTS
Rados and Helter lines were ∼ 18-fold more resistant (R) to glufosinate, and between 15.1 and 19.8-fold more resistant to imazamox than the S cultivar. Resistance to glufosinate and imazamox decreased up to 12% and 50%, respectively, when the herbicides were applied sequentially. The basal activities of the acetolactate and glutamine synthases were similar between R and S plants. Rados and Helter lines were 11.7- and 17.7-fold more resistant to imazamox than the S cultivar, due to the Ser653-Asn mutation in their imi-ALS genes. R lines, susceptible to glufosinate at the target site level, showed lower ammonia accumulation evidencing the activity of the phosphinothricin acetyl transferase. Absorption and translocation patterns for
CONCLUSION
CONCLUSIONS
Stacked traits conferring dual herbicide resistance to the lines Rados and Helter come from the resistant parents. These R lines are potential tools for weed management in wheat production, mainly via herbicide rotation. © 2018 Society of Chemical Industry.
Substances chimiques
Aminobutyrates
0
Herbicides
0
Imidazoles
0
phosphinothricin
51276-47-2
Acetolactate Synthase
EC 2.2.1.6
Glutamate-Ammonia Ligase
EC 6.3.1.2
imazamox
UG6793ON5F
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
648-657Subventions
Organisme : Consejo Nacional de Ciencia y Tecnología
ID : 242088
Organisme : Ministerio de Economía y Competitividad
ID : AGL 2016-78944-R
Informations de copyright
© 2018 Society of Chemical Industry.