International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
RED RICE (Oryza sativa var. sylvatica)

with GROUP B/2 resistance: (INHIBITION OF ACETOLACTATE SYNTHASE )
Inhibition of Acetolactate Synthase
MUTATION: GLYCINE 654 to GLUTAMATE







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Chemical FamilyExample HerbicideResistance Level
ImidazolinonesImazethapyr Resistant > 10 fold
Pyrimidinyl benzoates Bispyribac-Na Intermediate Resistance < 10 fold
SulfonylureasChlorsulfuron Not Determined
Triazolopyrimidine - Type 1 Chloransulam-methyl Not Determined
Triazolinones Flucarbazone-Na Not Determined

NOTE
Both Gly654Glu and Val669Met substitutions were identified, but research by Shivrain et al. 2010 suggests the latter substitution confers little or no resistance. 

REFERENCES

This case was entered by Patrick Tranel Email: tranel@illinois.edu
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Sunday, October 24, 2021 .  Available  www.weedscience.org
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