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Wednesday, December 11, 2024
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CATCHWEED BEDSTRAW
(
Galium aparine
)
with
GROUP B/2 resistance: (INHIBITION OF ACETOLACTATE SYNTHASE )
Inhibition of Acetolactate Synthase
MUTATION: PROLINE 197 to THREONINE
Catchweed Bedstraw
(
Galium aparine
) is a dicot plant in the rubiaceae family. A single amino acid substitution from Proline 197 to Threonine has led to resistance to Inhibition of Acetolactate Synthase as indicated in the table below.
Catchweed Bedstraw
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
Zhang, L. L., Q. Li, W. L. Guo, W. Li, and J. X. Wang
.
2016
.
Molecular mechanism of Galium aparine resistance to tribenuron-methyl
.
Chinese Agricultural Science Bulletin
32
:
110 - 113
.
In recent years,the tribenuron-methylin resistant Galium aparine was serious throughout HenanProvince,and common dose of tribenuron-methyl cannot control Galium aparine any more.The objective ofthis study is to understand the molecular mechanism of the Galium aparine resistance to tribenuron-methyl.Through total DNA extraction,ALS clone and sequencing,the authors found the specific mutation sites inamino acid sequence of acetolactate synthase(ALS) in the resistant biotype of Galium aparine.Compared withthe susceptible biotype,there were three types of amino acid substitutions in the resistant biotypes,of which,the amino acid substitution of Pro197(CCC) to Thr(ACC) and Pro197(CCC) to Leu(CTC) were located in thehighly conserved region Domain A,Thr 457(ACC) to Ser(TCC) in the non-conservative region.Thesubstitution of Pro197 might be the reason for the resistance in the R-biotype of Galium aparine to tribenuron-methyl.
.
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, December 11, 2024
. Available
www.weedscience.org
Copyright © 1993-
2024
WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.
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