HRAC GROUP 5 (LEGACY C1 C2) RESISTANT BUR BEGGARTICKS
(Bidens tripartita)

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

Austria

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INTRODUCTION BUR BEGGARTICKS Bur Beggarticks (Bidens tripartita) is a dicot weed in the Asteraceae family.  In Austria this weed first evolved resistance to Group 5 (Legacy C1 C2) herbicides in 1979 and infests Corn (maize).   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 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 Bur Beggarticks Species Bidens tripartita Group PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2) Herbicides atrazine Location Austria Year 1979 Situation(s) Corn (maize) Contributors - (Alphabetically)   Edit this Case  |  Add New Case of Resistance  |  Add Note

NOTES ABOUT THIS BIOTYPE GENERAL Resistant to 5 kg/ha. Edit this Note  |  Add New Note   GENERAL R. Szith and H. Furlan (1979). Der dreiteilige zweizahn (Bidens tripartita, L.) ein neues atrazinresistentes unkraut im mais, Der Pflanzenarzt, 32, 6. Edit this Note  |  Add New Note

ACADEMIC ASPECTS Confirmation Tests Greenhouse trials comparing a known susceptible Bur Beggarticks biotype with this Bur Beggarticks 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 Bur Beggarticks 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 Bur Beggarticks from Austria please update the database.   Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  Help

CONTRIBUTING WEED SCIENTISTS

ACKNOWLEDGEMENTS The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Austria have been instrumental in providing you this information.

Herbicide Resistant Bur Beggarticks Globally (Bidens tripartita) Herbicide Resistant Bur Beggarticks Globally (Bidens tripartita) Drag a column header and drop it here to group by that column Herbicide Resistant Bur Beggarticks Globally (Bidens tripartita) # Country Country StateName FirstYear Situation Active Ingredients CountryID Site of Action WeedID Species CommonName ResistID 1 Austria Austria   1979 Corn (maize) atrazine 2 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2) 33 Bidens tripartita Bur Beggarticks 287

Literature about Similar Cases

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Rho, Y. D. ; Matsumoto, H. ; Usui, K. ; Ishizuka, K.. 1996. Involvement of foliar absorption and translocation in differential response between Bidens tripartita and B. frondosa to bensulfuron methyl. Weed Research, Japan 41 : 211 - 215.

The response of two Bidens species (B. tripartita and B. frondosa) to bensulfuron-methyl was compared and factors accounting for their differential response were investigated. A greenhouse experiment showed that B. tripartita had greater tolerance to the herbicide than B. frondosa, although the latter had moderate tolerance which was comparable to that of barnyardgrass (Echinochloa crus-galli). Absorption of ¹⁴C from above-ground (shoot) tissue following ¹⁴C-bensulfuron methyl application was more rapid in B. frondosa than in B. tripartita. Absorption from the cotyledon was also much greater in B. frondosa, and absorbed ¹⁴C was distributed throughout the shoots of the species. Differential foliar absorption and translocation between the Bidens species may partly explain their differential response to bensulfuron-methyl..

Bachthaler, G. ; Kees, H. ; Dinzenhofer, B.. 1983. The build-up of resistant lines of arable weeds after continued use of herbicides, especialy triazines. Present state of knowledge of causes and practical consequences. Nachrichtenblatt des Deutschen Pflanzenschutzdienstes 35 : 161 - 168.

Factors influencing the build-up of resistance to triazines are reviewed with reference to Senecio vulgaris, Chenopodium spp., Amaranthus spp., Ambrosia artemisifolia, Brassica campestris, Stellaria media, Solanum nigrum, Polygonum spp., Galinsoga ciliata, Bidens tripartita, Erigeron canadensis and Cirsium arvense..

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