International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
PALMER AMARANTH (Amaranthus palmeri)

with GROUP B/2 resistance: (INHIBITION OF ACETOLACTATE SYNTHASE )
Inhibition of Acetolactate Synthase
MUTATION: SERINE 653 to ASPARAGINE







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Chemical FamilyExample HerbicideResistance Level
ImidazolinonesImazethapyr Not Determined
Pyrimidinyl benzoates Bispyribac-Na Not Determined
SulfonylureasChlorsulfuron Not Determined
Triazolopyrimidine - Type 1 Chloransulam-methyl Not Determined
Triazolinones Flucarbazone-Na Not Determined

NOTE

The Molin et al. 2016 paper reported this mutation in Palmer amaranth but it was not characterized. 

Berger et al. 2016 also identified but did not characterize this mutation. 

The mutation was also identified by Larran et al. 2017, but was present within a segregating population, so the conferred levels of resistance to the different chemical families are unknown. 

Mutation also identified by Singh et al. 2018, but present in plant that also had Trp574Leu.


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.  Thursday, October 21, 2021 .  Available  www.weedscience.org
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