HRAC GROUP 2 (LEGACY B) RESISTANT WHITE WALLROCKET
(Diplotaxis erucoides)

Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)

Israel

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INTRODUCTION WHITE WALLROCKET White Wallrocket (Diplotaxis erucoides) is a dicot weed in the Brassicaceae family.  In Israel this weed first evolved resistance to Group 2 (Legacy B) herbicides in 2012 and infests Wheat.   Group 2 (Legacy B) herbicides are known as Inhibition of Acetolactate Synthase (Inhibition of Acetolactate Synthase ).  Research has shown that these particular biotypes are resistant to florasulam, flumetsulam, imazamox, imazethapyr, and tribenuron-methyl and they may be cross-resistant to other Group 2 (Legacy B) herbicides. The 'Group' letters/numbers that you see throughout this web site refer to the classification of herbicides by their site of action. To see a full list of herbicides and HRAC herbicide classifications click here.

QUIK STATS (last updated Dec 19, 2012 ) Common Name White Wallrocket Species Diplotaxis erucoides Group Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B) Herbicides florasulam, flumetsulam, imazamox, imazethapyr, and tribenuron-methyl Location Israel Year 2012 Situation(s) Wheat Contributors - (Alphabetically) Maor Matzrafi, and Baruch Rubin  Edit this Case  |  Add New Case of Resistance  |  Add Note

NOTES ABOUT THIS BIOTYPE MECHANISM ALS inhibitor resistance in  Diplotaxis erucoides is due to a Tryptophan 574 to Leucine mutation.  Maor Matzrafi. Edit this Note  |  Add New Note

ACADEMIC ASPECTS Confirmation Tests Greenhouse, and Laboratory trials comparing a known susceptible White Wallrocket biotype with this White Wallrocket biotype have been used to confirm resistance. For further information on the tests conducted please contact the local weed scientists that provided this information.   Genetics Genetic studies on HRAC Group 2 resistant White Wallrocket indicate that the inheritance is determined by a dominant trait.  There may be a note below or an article discussing the genetics of this biotype in the Fact Sheets and Other Literature   Mechanism of Resistance Studies on the mechanism of resistance of Group 2 (Legacy B) resistant White Wallrocket from Israel indicate that resistance is due to an altered target site.  There may be a note below or an article discussing the mechanism of resistance in the Fact Sheets and Other Literature   Relative Fitness There is no record of differences in fitness or competitiveness of these resistant biotypes when compared to that of normal susceptible biotypes.  If you have any information pertaining to the fitness of Group 2 (Legacy B) resistant White Wallrocket from Israel please update the database.   Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  Help

CONTRIBUTING WEED SCIENTISTS MAOR MATZRAFI Postdoctral Researcher University of California Department of Plant Sciences MS 4 Davis, 95616 Israel Email Maor Matzrafi BARUCH RUBIN Professor Hebrew University Of Jerusalem Inst. Plant Sci. & Genetics In Agriculture Faculty Of Agric. Food & Environm. Rehovot, 76100, Israel Israel Email Baruch Rubin

ACKNOWLEDGEMENTS The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Israel have been instrumental in providing you this information. Particular thanks is given to Maor Matzrafi, and Baruch Rubin for providing detailed information.

Herbicide Resistant White Wallrocket Globally (Diplotaxis erucoides) Herbicide Resistant White Wallrocket Globally (Diplotaxis erucoides) Drag a column header and drop it here to group by that column Herbicide Resistant White Wallrocket Globally (Diplotaxis erucoides) # Country Country StateName FirstYear Situation Active Ingredients CountryID Site of Action WeedID Species CommonName ResistID 1 Israel Israel   2012 Wheat florasulam, flumetsulam, imazamox, imazethapyr, and tribenuron-methyl 23 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B) 285 Diplotaxis erucoides White Wallrocket 5702

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