INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE

HRAC GROUP 1 (LEGACY A) RESISTANT GOOSEGRASS
(Eleusine indica)


Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)

Brazil
INTRODUCTION GOOSEGRASS
Goosegrass (Eleusine indica) is a monocot weed in the Poaceae family.  In Brazil this weed first evolved resistance to Group 1 (Legacy A) herbicides in 2003 and infests Soybean.   Group 1 (Legacy A) herbicides are known as Inhibition of Acetyl CoA Carboxylase (Inhibition of Acetyl CoA Carboxylase ).  Research has shown that these particular biotypes are resistant to cyhalofop-butyl, fenoxaprop-ethyl, and sethoxydim and they may be cross-resistant to other Group 1 (Legacy A) 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 Oct 21, 2007 )

Common NameGoosegrass
SpeciesEleusine indica
GroupInhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Herbicidescyhalofop-butyl, fenoxaprop-ethyl, and sethoxydim
LocationBrazil
Year2003
Situation(s)Soybean
Contributors - (Alphabetically)Rafael De Prado, and Ribas Vidal 
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NOTES ABOUT THIS BIOTYPE

MECHANISM

Ribas Vidal
Goosegrass (Eleusine Indica): First Report Of Target Site Resistance To Accase Inhibitors In A Brazilian Biotype. J. P. Ruiz-Santaella*,1 R. Vidal,2 J. Wagner,3 R. De Prado1; 1Agricultural Chemistry and Edaphology, University of Cordoba, Córdoba, Spain, 2Plant Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil, 3Weed Science, University of Hohenheim, Stuttgart, Germany

Goosegrass (Eleusine indica) is a diploid grass weed which has developed resistance to ACCase inhibitors during the last ten years due to the intensive and frequent use of sethoxydim to control grass weeds in soybean crops in Brazil. Dose-response assays confirmed the resistant behavior of this biotype obtaining high RF that ranged from 143 (fenoxaprop), 126 (haloxyfop), 84 (sethoxydim) to 58 (fluazifop). ACCase in vitro assays indicated a target site resistance as the cause of reduced susceptibility to ACCase inhibitors. PCR-generated fragments of the ACCase CT domain of the resistant and sensitive reference biotype were sequenced and compared. A point mutation was detected within the triplet of asparagine at the amino acid position 2078 (referred to EMBL accession no. AJ310767) and resulted in the triplet of glycine. These results constitute the first report on the target site mutation for a Brazilian herbicide resistant weed. The mechanism of herbicide resistance in the goosegrass biotype found in Brazil, add a new species in the increasing list of target-site resistant grass weeds. E-mail: qe2rumoj@uco.es

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ACADEMIC ASPECTS

Confirmation Tests

Field, Greenhouse, and Laboratory trials comparing a known susceptible Goosegrass biotype with this Goosegrass 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 1 resistant Goosegrass indicate that the inheritance is determined by a nuclear trait.  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

Studies on the mechanism of resistance of Group 1 (Legacy A) resistant Goosegrass from Brazil indicate that resistance is due to an altered target site.  There may be a note below or an article discussing the mechanism of resistance in the Fact Sheets and Other Literature
 
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 1 (Legacy A) resistant Goosegrass from Brazil please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

RAFAEL DE PRADO
Universidad De Cordoba
Qvimica Agricola Y Edafologa
E T S Ingenieros Agronomos
PO Box 119
Cordoba, E-14080, Andalusia
Spain
Email Rafael De Prado
RIBAS VIDAL
Professor
Universidade Federal Do Rio Grande Do Sul
Plant Sciences
Rod. Carlos João Strass
Acesso Orlando, Cx Postal 231,
Porto Alegre, CEP 91001-970, RS
Brazil
Email Ribas Vidal

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Brazil have been instrumental in providing you this information. Particular thanks is given to Rafael De Prado, and Ribas Vidal for providing detailed information.
Herbicide Resistant Goosegrass Globally
(Eleusine indica)
Herbicide Resistant Goosegrass Globally
(Eleusine indica)
Drag a column header and drop it here to group by that column
Herbicide Resistant Goosegrass Globally
(Eleusine indica)
#CountryFirstYearSituationActive IngredientsSite of Action
1 ArgentinaArgentina 2012 Corn (maize), Fallow, and Soybean glyphosate 48 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass5701
2 Australia (Queensland) AustraliaQueensland2015 Sugarcane for sugar paraquat 1 PS I Electron Diversion ( HRAC Group 22 (Legacy D)
81Eleusine indicaGoosegrass11024
3 BoliviaBolivia 2005 Rice, Soybean, and Wheat clethodim, cyhalofop-butyl, fluazifop-butyl, and haloxyfop-methyl 4 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
81Eleusine indicaGoosegrass5412
4 BoliviaBolivia 2007 Soybean glyphosate 4 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass7887
5 BrazilBrazil 2003 Soybean cyhalofop-butyl, fenoxaprop-ethyl, and sethoxydim 5 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
81Eleusine indicaGoosegrass5245
6 BrazilBrazil 2016 Corn (maize), Soybean, and Wheat glyphosate 5 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass13039
7 BrazilBrazil 2017 Beans, Corn (maize), Cotton, and Soybean fenoxaprop-ethyl, glyphosate, and haloxyfop-methyl 5 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass17112
8 ChinaChina 2010 Unspecified paraquat 9 PS I Electron Diversion ( HRAC Group 22 (Legacy D)
81Eleusine indicaGoosegrass5659
9 ChinaChina 2010 Orchards glyphosate 9 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass5661
10 ColombiaColombia 2006 Coffee, and Corn (maize) glyphosate 10 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass5365
11 ColombiaColombia 2016 Corn (maize) glyphosate, and paraquat 10 Multiple Resistance: 2 Sites of Action
PS I Electron Diversion ( HRAC Group 22 (Legacy D)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass18177
12 Costa RicaCosta Rica 1989 Industrial sites imazapyr 11 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
81Eleusine indicaGoosegrass73
13 Costa RicaCosta Rica 2010 Pejibaye palm glyphosate 11 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass7884
14 IndonesiaIndonesia 2012 Oil Palm Nursery glyphosate, and paraquat 22 Multiple Resistance: 2 Sites of Action
PS I Electron Diversion ( HRAC Group 22 (Legacy D)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass11020
15 IndonesiaIndonesia 2012 Corn (maize) paraquat 22 PS I Electron Diversion ( HRAC Group 22 (Legacy D)
81Eleusine indicaGoosegrass13034
16 ItalyItaly 2019 Nurseries glyphosate 24 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass18208
17 JapanJapan 2013 Rice Paddy Levee glyphosate 25 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass10998
18 MalaysiaMalaysia 1990 Cropland, and Vegetables fluazifop-butyl, and propaquizafop 28 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
81Eleusine indicaGoosegrass133
19 MalaysiaMalaysia 1990 Vegetables paraquat 28 PS I Electron Diversion ( HRAC Group 22 (Legacy D)
81Eleusine indicaGoosegrass140
20 MalaysiaMalaysia 1997 Orchards fluazifop-butyl, and glyphosate 28 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass1125
21 MalaysiaMalaysia 2009 Vegetables glufosinate-ammonium, and paraquat 28 Multiple Resistance: 2 Sites of Action
PS I Electron Diversion ( HRAC Group 22 (Legacy D)
Inhibition of Glutamine Synthetase ( HRAC Group 10 (Legacy H)
81Eleusine indicaGoosegrass7873
22 MalaysiaMalaysia 2009 Oil Palm Nursery butroxydim, fluazifop-butyl, glufosinate-ammonium, glyphosate, haloxyfop-methyl, and paraquat 28 Multiple Resistance: 4 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
PS I Electron Diversion ( HRAC Group 22 (Legacy D)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
Inhibition of Glutamine Synthetase ( HRAC Group 10 (Legacy H)
81Eleusine indicaGoosegrass9927
23 MexicoMexico 2016 Oranges glyphosate 29 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass18194
24 United States (North Carolina) United StatesNorth Carolina1973 Cotton trifluralin 45 Inhibition of Microtubule Assembly ( HRAC Group 3 (Legacy K1)
81Eleusine indicaGoosegrass258
25 United States (South Carolina) United StatesSouth Carolina1974 Cotton, and Soybean trifluralin 45 Inhibition of Microtubule Assembly ( HRAC Group 3 (Legacy K1)
81Eleusine indicaGoosegrass266
26 United States (Alabama) United StatesAlabama1987 Cotton trifluralin 45 Inhibition of Microtubule Assembly ( HRAC Group 3 (Legacy K1)
81Eleusine indicaGoosegrass223
27 United States (Tennessee) United StatesTennessee1988 Cotton, Golf courses, and Turf pendimethalin, prodiamine, and trifluralin 45 Inhibition of Microtubule Assembly ( HRAC Group 3 (Legacy K1)
81Eleusine indicaGoosegrass1103
28 United States (Arkansas) United StatesArkansas1989 Cotton, and Cropland trifluralin 45 Inhibition of Microtubule Assembly ( HRAC Group 3 (Legacy K1)
81Eleusine indicaGoosegrass400
29 United States (Georgia) United StatesGeorgia1992 Cotton, Golf courses, and Turf trifluralin 45 Inhibition of Microtubule Assembly ( HRAC Group 3 (Legacy K1)
81Eleusine indicaGoosegrass1043
30 United States (Mississippi) United StatesMississippi1994 Cotton pendimethalin, and trifluralin 45 Inhibition of Microtubule Assembly ( HRAC Group 3 (Legacy K1)
81Eleusine indicaGoosegrass255
31 United States (Florida) United StatesFlorida1996 Tomatoes paraquat 45 PS I Electron Diversion ( HRAC Group 22 (Legacy D)
81Eleusine indicaGoosegrass5053
32 United States (Hawaii) United StatesHawaii2003 Turf metribuzin 45 PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
81Eleusine indicaGoosegrass5533
33 United States (Mississippi) United StatesMississippi2010 Cotton glyphosate 45 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass5503
34 United States (Tennessee) United StatesTennessee2011 Soybean glyphosate 45 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
81Eleusine indicaGoosegrass5549
35 United States (North Carolina) United StatesNorth Carolina2015 Golf courses oxadiazon 45 Inhibition of Protoporphyrinogen Oxidase ( HRAC Group 14 (Legacy E)
81Eleusine indicaGoosegrass15072
36 United States (Virginia) United StatesVirginia2015 Golf courses oxadiazon 45 Inhibition of Protoporphyrinogen Oxidase ( HRAC Group 14 (Legacy E)
81Eleusine indicaGoosegrass15073
37 United States (Alabama) United StatesAlabama2019 Tomatoes paraquat 45 PS I Electron Diversion ( HRAC Group 22 (Legacy D)
81Eleusine indicaGoosegrass18191
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