International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP C1/5 RESISTANT CATSTAIL
(Rostraria smyrnacea (=Lophochloa smyrnacea))


Photosystem II inhibitors (C1/5)

Israel
INTRODUCTION CATSTAIL
Catstail (Rostraria smyrnacea (=Lophochloa smyrnacea)) is a monocot weed in the Poaceae family.  In Israel this weed first evolved resistance to Group C1/5 herbicides in 1979 and infests Roadsides.   Group C1/5 herbicides are known as Photosystem II inhibitors (Inhibition of photosynthesis at photosystem II).  Research has shown that these particular biotypes are resistant to atrazine, and simazine and they may be cross-resistant to other Group C1/5 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.

If we do not have a picture for this weed, or you can provide a better picture (scan, digital camera etc) please please e-mail it to us.

QUIK STATS (last updated Sep 15, 2000 )

Common NameCatstail
SpeciesRostraria smyrnacea (=Lophochloa smyrnacea)
GroupPhotosystem II inhibitors (C1/5)
Herbicidesatrazine, and simazine
LocationIsrael
Year1979
Situation(s)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 Catstail biotype with this Catstail 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 C1/5 resistant Catstail 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

Triazine resistant weeds often exhibit a lower relative fitness when compared to susceptible biotypes.  The most common mutation conferring triazine resistance (Ser 264 to Gly mutation of the psbA gene) also causes a reduction in CO2 fixation, quantum yield, and seed and biomass production.  There is no record in this database referring specifically to fitness studies on Group C1/5 resistant Catstail from Israel.
 
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 Catstail Globally
(Rostraria smyrnacea (=Lophochloa smyrnacea))
Herbicide Resistant Catstail Globally
(Rostraria smyrnacea (=Lophochloa smyrnacea))
Drag a column header and drop it here to group by that column
Herbicide Resistant Catstail Globally
(Rostraria smyrnacea (=Lophochloa smyrnacea))
#CountryFirstYearSituationActive IngredientsSite of Action
1 IsraelIsrael 1979 Roadsides atrazine, and simazine 23 Photosystem II inhibitors (C1/5)
114Rostraria smyrnacea (=Lophochloa smyrnacea)Catstail98
Literature about Similar Cases

1
Page size:
select
Page: of 0
Items 0 to 0 of 0

1
Page size:
select
Page: of 0
Items 0 to 0 of 0
PERMISSION MUST BE OBTAINED FIRST if you intend to base a significant portion of a scientific paper on data derived from this site.
Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Saturday, December 14, 2019 .  Available  www.weedscience.org
Copyright © 1993- 2019 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.