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CROWN DAISY
(
Chrysanthemum coronarium
)
with
GROUP B/2 resistance: (INHIBITION OF ACETOLACTATE SYNTHASE )
Inhibition of Acetolactate Synthase
MUTATION: PROLINE 197 to SERINE
Crown daisy
(
Chrysanthemum coronarium
) is a dicot plant in the asteraceae family. A single amino acid substitution from Proline 197 to Serine has led to resistance to Inhibition of Acetolactate Synthase as indicated in the table below.
Crown daisy
Chemical Family
Example Herbicide
Resistance Level
Imidazolinones
Imazethapyr
Not Determined
Pyrimidinyl benzoates
Bispyribac-Na
Not Determined
Sulfonylureas
Chlorsulfuron
Not Determined
Triazolopyrimidine - Type 1
Chloransulam-methyl
Not Determined
Triazolinones
Flucarbazone-Na
Not Determined
REFERENCES
Tal, A. ; Rubin, B.
.
2004
.
Occurrence of resistant
Chrysanthemum coronarium
to ALS inhibiting herbicides in Israel
.
Resistant Pest Management Newsletter
13
:
31 - 33
.
A greenhouse experiment was conducted on
C. coronarium
cultivars Gilat and Beeri to determine the resistance of
C. coronarium
, on both whole plant and enzyme levels, to herbicides, i.e. sulfonylureas (SU), imidazolinones, triazolopyrimidines, pyrimidinylthiobenzoates and sulfonylaminocarbonyltriazolinones. In a related experiment to identify the differences in the nucleotide and amino acid sequences of acetolactate synthase (ALS) between the resistant (R) and susceptible (S) biotypes. Dose-response experiments at the whole plant level have revealed that the R biotype from Gilat was highly resistant to tribenuron (>792-fold) relative to the susceptible wild-type. Other SU herbicides such as iodosulfuron, chlorsulfuron and sulfometuron have also exhibited R/S>100. However, moderate and variable resistance (4- to 48-fold) to herbicides from other ALS-inhibiting groups, i.e. imazethapyr, flumetsulam, pyrithiobac-Na and propoxycarbone-Na. The results confirm that resistance to ALS inhibiting herbicides in
C. coronarium
is due to an alteration in the target site (ALS) and associated with the substitutions in the proline197 to the
ALS
gene.
.
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, December 12, 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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