LOGIN
|
REGISTER
Thursday, November 14, 2024
Home
Summaries
Country Summary
Site of Action Summary
Site of Action Table
ALS Mutation Database
Graphs
Chronological Increase in USA
Saving Graphs for PowerPoint
Multiple Resistance within Populations
Weeds Resistant to Many SOA's
Global Maps
Chronological Increase
Resistance by Site of Action
Graph Data for Resistance by SOA
Resistance by SOA listing species
Resistance by SOA and Crop
Resistance by Weed Family
Weed Families by # SOA
Top 15 Weed Species by # SOA
Lifecycle Duration for Resistant Weeds vs Weeds in General
Top 15 Herbicides to Select Resistance
ALS inhibitor mutations
ALS inhibitor Mutations - Residue #
#Herbicides for each of the Top 15 SOA's
Recent Additions
Select Multiple Resistance by Country
Resistant Weeds
By Species
By Crop
By Country
By Herbicide Site of Action
By Individual Herbicide
Add New Case
Add New Case of Resistance
Criterion for Confirmation
Herbicides
Herbicide Classification System
Herbicides by Site of Action
Herbicide Poster
Researchers
Login
Log Out
Edit Your Contact Details
Find Researchers
Register as Researcher
Email me my Password
Change my Password
Literature
Search Reference Database
Add a Document
Add a Reference
E-Books
Herbicide Resistant Phalaris minor in Wheat - India
Management of Resistant Weeds in Rice
Prevención y manejo de malezas resistentes a herbicidas en arroz
Help
About US
FAQ
FAQ
Login
FAQ
About Us
Cite this Site
Add New Case
Add Documents
Summaries
US State Map
European Map
Recent Cases
Countries
Sites of Action
All Species by SOA Table
Herbicides
Glyphosate Resistant Weeds
ALS Mutation Database
Sequence Database
Graphs
Global Maps
Herbicide Poster
Herbicide Classification System
Resistant Weeds
By Site of Action
By Crop
By Species
By Country
By Individual Herbicide
Membership
Register
Retrieve Your Password
Edit Your Contact Details
Change Your Password
Contacts
Researchers
Contact Us
KOCHIA
(
Kochia scoparia
)
with
GROUP B/2 resistance: (INHIBITION OF ACETOLACTATE SYNTHASE )
Inhibition of Acetolactate Synthase
MUTATION: PROLINE 197 to ALANINE
Kochia
(
Kochia scoparia
) is a dicot plant in the chenopodiaceae family. A single amino acid substitution from Proline 197 to Alanine has led to resistance to Inhibition of Acetolactate Synthase as indicated in the table below.
Kochia
Chemical Family
Example Herbicide
Resistance Level
Imidazolinones
Imazethapyr
Not Determined
Pyrimidinyl benzoates
Bispyribac-Na
Not Determined
Sulfonylureas
Chlorsulfuron
Resistant > 10 fold
Triazolopyrimidine - Type 1
Chloransulam-methyl
Not Determined
Triazolinones
Flucarbazone-Na
Not Determined
REFERENCES
Guttieri, M. J. ; Eberlein, C. V. ; Thill, D. C.
.
1995
.
Diverse mutations in the acetolactate synthase gene confer chlorsulfuron resistance in kochia (
Kochia scoparia
) biotypes
.
Weed Science
43
:
175 - 178
.
The DNA sequence of an 83-base pair region of the acetolactate synthase (ALS) gene was compared for 10 chlorsulfuron-resistant (R) and 3 chlorsulfuron-susceptible (S) kochia biotypes. Point mutation in the codon for the proline residue at position 173 in Domain A of the ALS protein was observed in 7 of 10 R biotypes. Among these 7 R biotypes, mutation to threonine, serine, arginine, leucine, glutamine and alanine was identified. The mechanism of resistance was determined for the R biotypes that did not have mutation in Domain A; all were resistant due to modified ALS, which indicated that at least one non-Domain A mutation site for resistance exists in kochia. Sequence results indicated that multiple mutations for resistance have occurred and that geographically widespread ALS-inhibitor resistance in kochia is not the result of a single resistance allele.
.
This case was entered by Patrick Tranel Email:
tranel@illinois.edu
PERMISSION MUST BE OBTAINED FIRST if you intend to base a significant portion of a scientific paper on data derived from this site.
Cite this site as:
Heap, I. The International Survey of Herbicide Resistant Weeds. Online. Internet.
Thursday, November 14, 2024
. Available
www.weedscience.org
Copyright © 1993-
2024
WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.
{1}
##LOC[OK]##
{1}
##LOC[OK]##
##LOC[Cancel]##
{1}
##LOC[OK]##
##LOC[Cancel]##