LOGIN
|
REGISTER
Wednesday, November 6, 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
ROCK BULRUSH
(
Schoenoplectus juncoides
)
with
GROUP B/2 resistance: (INHIBITION OF ACETOLACTATE SYNTHASE )
Inhibition of Acetolactate Synthase
MUTATION: PROLINE 197 to ARGININE
Rock Bulrush
(
Schoenoplectus juncoides
) is a monocot plant in the cyperaceae family. A single amino acid substitution from Proline 197 to Arginine has led to resistance to Inhibition of Acetolactate Synthase as indicated in the table below.
Rock Bulrush
Chemical Family
Example Herbicide
Resistance Level
Imidazolinones
Imazethapyr
Susceptible
Pyrimidinyl benzoates
Bispyribac-Na
Not Determined
Sulfonylureas
Chlorsulfuron
Resistant > 10 fold
Triazolopyrimidine - Type 1
Chloransulam-methyl
Not Determined
Triazolinones
Flucarbazone-Na
Not Determined
REFERENCES
Sada, Y., H. Ikeda, and S. Kizawa
.
2013
.
Resistance levels of sulfonylurea-resistant Schoenoplectus juncoides (Roxb.) Palla with various Pro197 mutations in acetolactate synthase to imazosulfuron, bensulfuron-methyl, metsulfuron-methyl and imazaquin-ammonium.
.
Weed Biology and Management
13
:
53 - 61
.
An investigation, using herbicidal pot tests in a greenhouse condition, was conducted to determine the whole-plant dose–response relationships to several acetolactate synthase (ALS)- inhibiting herbicides of sulfonylurea (SU)-resistant Schoenoplectus juncoides with various Pro197 mutations in ALS that was collected from Japanese rice paddy fields.All the tested SU-resistant accessions with a Pro197 mutation were highly resistant to two commonly used SU herbicides (imazosulfuron and bensulfuron-methyl), but were much less resistant to another SU herbicide, metsulfuron-methyl, and were substantially not resistant to imazaquin-ammonium. These cross-resistance patterns have been known previously in fragments of S. juncoides and other weed species and were comprehensively confirmed in this study with a whole set of Pro197 mutations.The analyses of resistance levels, based on ED90 values, newly showed that different accessions with a common amino acid substitution in ALS1 showed similar responses to these herbicides (confirmed with four amino acid substitutions), that the rankings of resistance levels that were conferred by various Pro197 mutations in ALS1 differed among the SU herbicides and that the resistance levels of the ALS2-mutated accessions were higher than, lower than or similar to those of the corresponding ALS1-mutated accessions, depending on the compared pair, but the deviation patterns were generally similar among the SU herbicides in each compared pair.The final finding might suggest that the abundance of ALS2 is not as stable as that of ALS1. In addition, as a result of these new findings, together with expected further research, a suggested possibility is that substituting amino acids at Pro197 generally could be estimated by plotting each accession’s ED90 values of imazosulfuron and bensulfuron-methyl in a two-dimensional graph.
.
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.
Wednesday, November 6, 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]##