International Survey of Herbicide-Resistant Weeds

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HRAC GROUP 5 (LEGACY C1 C2) RESISTANT ANNUAL FALSEBROME
(Brachypodium distachyon)


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

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 5 (Legacy C1 C2) herbicides in 1975 and infests Forests, 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.

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QUIK STATS (last updated Apr 19, 2015 )

Common NameAnnual Falsebrome
SpeciesBrachypodium distachyon
GroupPSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
Herbicidesatrazine, and simazine
LocationIsrael
Year1975
Situation(s)Forests, and Roadsides
Contributors - (Alphabetically)Maor Matzrafi, Zvi Peleg, and Baruch Rubin 
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NOTES ABOUT THIS BIOTYPE

AREAS FOUND

Baruch Rubin
Central part of Israel

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ACADEMIC ASPECTS

Confirmation Tests

Field, 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 HRAC Group 5 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 5 (Legacy C1 C2) resistant Annual Falsebrome from Israel please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

MAOR MATZRAFI
Postdoctral Researcher
University of California
Department of Plant Sciences
MS 4
Davis, 95616
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 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
35Brachypodium distachyonAnnual Falsebrome95
2 IsraelIsrael 2014 Roadsides diclofop-methyl, and pinoxaden 23 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
35Brachypodium distachyonAnnual Falsebrome10990
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