HRAC GROUP 5 (LEGACY C1 C2) RESISTANT HARE'S FOOT PLANTAIN
(Plantago lagopus)

PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)

Israel

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INTRODUCTION HARE'S FOOT PLANTAIN Hare's Foot Plantain (Plantago lagopus) is a dicot weed in the Plantaginaceae family.  In Israel this weed first evolved resistance to Group 5 (Legacy C1 C2) herbicides in 1992 and infests Orchards, and Roadsides.   Group 5 (Legacy C1 C2) herbicides are known as PSII inhibitors - Serine 264 Binders (Inhbition of Photosynthesis at PSll - Serine 264 Binders ).  Research has shown that these particular biotypes are resistant to atrazine, and simazine and they may be cross-resistant to other Group 5 (Legacy C1 C2) 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 Sep 15, 2000 ) Common Name Hare's Foot Plantain Species Plantago lagopus Group PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2) Herbicides atrazine, and simazine Location Israel Year 1992 Situation(s) Orchards, and Roadsides Contributors - (Alphabetically) Baruch Rubin  Edit this Case  |  Add New Case of Resistance  |  Add Note

NOTES ABOUT THIS BIOTYPE AREAS FOUND Baruch Rubin All over country. Edit this Note  |  Add New Note

ACADEMIC ASPECTS Confirmation Tests Field, Greenhouse, and Laboratory trials comparing a known susceptible Hare's Foot Plantain biotype with this Hare's Foot Plantain 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 5 resistant Hare's Foot Plantain have not been reported to the site.  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 The mechanism of resistance for this biotype is either unknown or has not been entered in the database.  If you know anything about the mechanism of resistance for this biotype then please update the database.   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 5 (Legacy C1 C2) resistant Hare's Foot Plantain from Israel please update the database.   Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  Help

CONTRIBUTING WEED SCIENTISTS 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 Baruch Rubin for providing detailed information.

Herbicide Resistant Hare's Foot Plantain Globally (Plantago lagopus) Herbicide Resistant Hare's Foot Plantain Globally (Plantago lagopus) Drag a column header and drop it here to group by that column Herbicide Resistant Hare's Foot Plantain Globally (Plantago lagopus) # Country Country StateName FirstYear Situation Active Ingredients CountryID Site of Action WeedID Species CommonName ResistID 1 Israel Israel   1992 Orchards, and Roadsides atrazine, and simazine 23 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2) 129 Plantago lagopus Hare's Foot Plantain 112

Literature about Similar Cases

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Lior, E. ; Sibony, M. ; Kigel, J. ; Rubin, B.. 2000. Polymorphism in the resistance of Plantago lagopus to herbicides. Weed Research (Oxford) 40 : 457 - 466.

Seeds from populations of Plantago lagopus were collected from six sites in Israel with different histories of previous herbicide use. Tlamim (T) and Bilu (B) had been treated previously with simazine and bromacil; Naan (N) with sulfometuron and diuron; Dvir (D) with diuron; and Givat Brenner (G) and Rehovot (F) were populations collected in non-cultivated fields that had no history of previous herbicide use. Based on whole-plant response to post-emergence herbicide sprays, isolated chloroplasts and fluorescence studies with excised leaves, it was evident that the T and B populations were triazine-resistant. The D population was the most resistant to diuron, G was the most sensitive, whereas B and N populations were intermediate. The N population was the only one that exhibited resistance to ALS inhibitors both at the whole plant and enzyme level. These data demonstrate the polymorphic nature of P. lagopus showing that resistance to different herbicides has evolved according to the selection pressure imposed by repeated herbicide applications..

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