LOGIN
|
REGISTER
Saturday, September 7, 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
EASTERN BLACK NIGHTSHADE
(
Solanum ptycanthum
)
with
GROUP B/2 resistance: (INHIBITION OF ACETOLACTATE SYNTHASE )
Inhibition of Acetolactate Synthase
MUTATION: ALANINE 122 to THREONINE
Eastern Black Nightshade
(
Solanum ptycanthum
) is a dicot plant in the solanaceae family. A single amino acid substitution from Alanine 122 to Threonine has led to resistance to Inhibition of Acetolactate Synthase as indicated in the table below.
Eastern Black Nightshade
Chemical Family
Example Herbicide
Resistance Level
Imidazolinones
Imazethapyr
Resistant > 10 fold
Pyrimidinyl benzoates
Bispyribac-Na
Not Determined
Sulfonylureas
Chlorsulfuron
Susceptible
Triazolopyrimidine - Type 1
Chloransulam-methyl
Not Determined
Triazolinones
Flucarbazone-Na
Not Determined
NOTE
REFERENCES
Milliman, L. D. ; Riechers, D. E. ; Wax, L. M. ; Simmons, F. W.
.
2003
.
Characterization of two biotypes of imidazolinone-resistant eastern black nightshade (
Solanum ptycanthum
)
.
Weed Science
51
:
139 - 144
.
Biotypes of eastern black nightshade (
S. ptycanthum
) that were not controlled by postemergence applications of imazethapyr were found in Illinois and Indiana, USA. Greenhouse studies were conducted to determine whole-plant responses to the imidazolinone herbicides imazethapyr and imazamox and to the sulfonylurea herbicide primisulfuron-methyl [primisulfuron]. The Illinois and Indiana resistant biotypes were highly resistant to imazamox and imazethapyr but were not cross-resistant to primisulfuron-methyl. DNA sequencing of acetolactate synthase (ALS) genes showed that the molecular basis for resistance in both resistant biotypes was a single base-pair mutation within Domain C that changed an alanine to a threonine in their encoded enzymes. In vitro enzyme assays showed that the Illinois resistant biotype's ALS enzyme was 789- and 881-fold less sensitive than that of the susceptible biotype to imazamox and imazethapyr, respectively. The Indiana resistant biotype's ALS enzyme was 110- and 158-fold less sensitive than that of the susceptible biotype to imazamox and imazethapyr, respectively. These results are consistent with the amino acid substitution found in the ALS enzyme of both resistant biotypes of eastern black nightshade.
.
Milliman, L. D., D.E. Riechers, F. W. Simmons, And L. M. Wax
.
2000
.
Two biotypes of eastern black nightshade that are resistant to ALS-inhibiting herbicides
.
Proceedings of the North Central Weed Science Society
55
:
86
.
.
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.
Saturday, September 7, 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]##