International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP A/1 RESISTANT ANNUAL FALSEBROME
(Brachypodium distachyon)


ACCase inhibitors (A/1)

Israel
INTRODUCTION ANNUAL FALSEBROME
Annual Falsebrome (Brachypodium distachyon) is a monocot weed in the Poaceae family.  In Israel this weed first evolved resistance to Group A/1 herbicides in 2014 and infests Roadsides.   Group A/1 herbicides are known as ACCase inhibitors (Inhibition of acetyl CoA carboxylase (ACCase)).  Research has shown that these particular biotypes are resistant to diclofop-methyl, and pinoxaden and they may be cross-resistant to other Group A/1 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.

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QUIK STATS (last updated Apr 19, 2015 )

Common NameAnnual Falsebrome
SpeciesBrachypodium distachyon
GroupACCase inhibitors (A/1)
Herbicidesdiclofop-methyl, and pinoxaden
LocationIsrael
Year2014
Situation(s)Roadsides
Contributors - (Alphabetically)Maor Matzrafi, Zvi Peleg, and Baruch Rubin 
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ACADEMIC ASPECTS

Confirmation Tests

Greenhouse, and Laboratory trials comparing a known susceptible Annual Falsebrome biotype with this Annual Falsebrome 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 Group A/1 resistant Annual Falsebrome 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 A/1 resistant Annual Falsebrome from Israel please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

MAOR MATZRAFI
Graduate Student
Hebrew University Of Jerusalem
Rh Smith Institute Of Plant Science & Genetics In Agricultur
Faculty Of Agriculture
Food And Environment
Rehovot, 76100
Israel
Email Maor Matzrafi
ZVI PELEG
Dr.
Hebrew University of Jerusalem
Faculty of Agriculture
Food and Environment
P.O.Box 12
Rehovot, 76100
Israel
Email Zvi Peleg
Web   : Web Site Link
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
Web   : Web Site Link

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, Zvi Peleg, and Baruch Rubin for providing detailed information.
Herbicide Resistant Annual Falsebrome Globally
(Brachypodium distachyon)
Herbicide Resistant Annual Falsebrome Globally
(Brachypodium distachyon)
Drag a column header and drop it here to group by that column
Herbicide Resistant Annual Falsebrome Globally
(Brachypodium distachyon)
#CountryFirstYearSituationActive IngredientsSite of Action
1 IsraelIsrael 1975 Forests, and Roadsides atrazine, and simazine 23 Photosystem II inhibitors (C1/5)
35Brachypodium distachyonAnnual Falsebrome95
2 IsraelIsrael 2014 Roadsides diclofop-methyl, and pinoxaden 23 ACCase inhibitors (A/1)
35Brachypodium distachyonAnnual Falsebrome10990
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