Target‐site mutation associated with glufosinate resistance in Italian ryegrass (<i>Lolium perenne</i> L. ssp. <i>multiflorum</i>)

Avila-Garcia, Wilson V.; Sanchez-Olguin, Elena; Hulting, Andrew Gerald; Mallory‐Smith, Carol

doi:10.1002/ps.3286

Cited by 44 publications

(45 citation statements)

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“…The results of this study indicate that a high level of GR volunteer corn control can be achieved through glufosinate in single or sequential applications; however, continuous use of glufosinate alone may result in the evolution of glufosinate-resistant weeds (Avila-Garcia et al 2012;Jalaludin et al 2010). Additionally, we believe that use of glyphosate-resistant hybrid corn vs. true volunteer corn would have slightly impacted the results because several factors, including the active growth of the plant, determine the plant's response to an herbicide application.…”

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“…In fact, two weed species have evolved resistance to glufosinate worldwide (Heap 2014b), including Italian ryegrass (Lolium perenne L. ssp. multiflorum), currently the only known glufosinateresistant species in the United States (Avila-Garcia et al 2012). Therefore, glufosinate should be carefully incorporated into herbicide programs along with herbicides with other modes of action in glufosinate-resistant soybean Johnson et al 2014;Kaur et al 2014).…”

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Herbicide Programs for Control of Glyphosate-Resistant Volunteer Corn in Glufosinate-Resistant Soybean

Chahal

Jhala

2015

Weed technol.

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Glyphosate-resistant (GR) volunteer corn is a significant problem weed in soybean grown in rotation with corn in the midwestern United States and eastern Canada. The objective of this study was to evaluate the efficacy of glufosinate applied in single or sequential applications compared with acetylcoenzyme A carboxylase (ACCase) inhibitors applied alone or tank mixed with glufosinate for controlling GR volunteer corn in glufosinate-resistant soybean. At 15 d after early-POST (DAEP), ACCase inhibitors applied alone controlled volunteer corn 76 to 93% compared to 71 to 82% control when tank mixed with glufosinate. The expected volunteer corn control achieved by tank mixing ACCase inhibitors and glufosinate was greater than the glufosinate alone, indicating that glufosinate antagonized ACCase inhibitors at 15 DAEP, but not at later rating dates. ACCase inhibitors applied alone or tank mixed with glufosinate followed by late-POST glufosinate application controlled volunteer corn and green foxtail ! 97% at 30 DAEP. Single early-POST application of glufosinate controlled common waterhemp and volunteer corn 53 to 78%, and green foxtail 72 to 93% at 15 DAEP. Single as well as sequential glufosinate applications controlled green foxtail and volunteer corn greater than or equal to 90%, and common waterhemp greater than 85% at 75 d after late-POST (DALP). Contrast analysis suggested that glufosinate applied sequentially provided greater control of volunteer corn at 15 and 75 DALP compared to a single application. Similar results were reflected in volunteer corn density and biomass at 75 DALP. Volunteer corn interference did not affect soybean yield, partly because of extreme weather conditions (hail and high winds) in both years of this study. Nomenclature: Clethodim; fenoxaprop-P; fluazifop-P; glufosinate; quizalofop-P; sethoxydim; common waterhemp, Amaranthus rudis Sauer; green foxtail, Setaria viridis (L.) Beauv.; soybean, Glycine max (L.) Merr.; volunteer corn, Zea mays L. Key words: Antagonism, herbicide interaction, resistance management, weed control.El maíz voluntario resistente a glyphosate (GR) es un problema significativo de malezas en soja producida en rotación con maíz en el centro oeste de los Estados Unidos y en el este de Canadá. El objetivo de este estudio fue evaluar la eficacia de glufosinate aplicado solo o en aplicaciones secuenciales comparado con inhibidores de acetyl-coenzyme A carboxylase (ACCase) aplicados solos o en mezclas en tanque con glufosinate para el control de maíz GR voluntario en soja resistente a glufosinate. A 15 d después de la aplicación POST temprana (DAEP), los inhibidores de ACCase aplicados solos controlaron el maíz voluntario 76 a 93% comparado con 71 a 82% de control con la mezcla en tanque con glufosinate. El control esperado de maíz voluntario con las mezclas en tanque con ACCase y glufosinate fue mayor que el de glufosinate solo, lo que indicó que glufosinate antagonizó a los inhibidores de ACCase a 15 DAEP, pero no en fechas de evaluación posteriores. Los inhibidores de AC...

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Herbicide Programs for Control of Glyphosate-Resistant Volunteer Corn in Glufosinate-Resistant Soybean

Chahal

Jhala

2015

Weed technol.

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“…Although herbicide tolerance in maize, a selective advantage in habitats with herbicide application, is already known to cause problems [16, 32–34], GM maize is still considered of limited concern in the context of invasive weeds, at least outside agricultural systems. However, this might change, if maize became better adapted to cold climatic conditions.…”

Section: Resultsmentioning

confidence: 99%

Spread of volunteer and feral maize plants in Central Europe: recent data from Austria

Pascher

2016

Environ Sci Eur

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The occurrence of volunteer maize plants in subsequent crops as well as of feral maize plants in non-agricultural areas is an essential issue in risk assessments of genetically modified (GM) maize, with regard to possible contamination of natural habitats with GM material and as contribution to the total adventitious GM content of the non-GM final product. The appearance of feral maize plants has been confirmed for non-agricultural habitats in European areas with Mediterranean climate such as Spain. However, the existence of maize volunteers and feral maize outside cultivation under Central European continental climatic conditions is considered to be extremely unlikely in those winter-cold areas. Here, field observations during 5 years (2007, 2008, 2010, 2011 and 2015) in Austria are presented that confirm the occurrence of volunteer and feral maize under Central European climatic conditions. Most of these plants produced fertile inflorescences with viable pollen and fully developed cobs. Maize kernels may reach the soil by disintegration of cobs due to disease, using crushed maize cobs for game-feeding, left overs in manure dispersed during fertilisation or from transporting and handling of crushed cobs. The evidence of volunteer and feral maize in four Federal States in Austria (Burgenland, Lower Austria, Upper Austria, Styria) emphasises the necessity to consider these hitherto under-emphasised factors in an ecological risk assessment (ERA) of GM maize as a possible source for transgenes in non-agricultural habitats, because these plants could act as bridge for the spread of GM material into semi-natural habitats. In accordance with the European Food Safety Authority (EFSA), which states that in principle maize has the potential to survive as a volunteer or feral plant also in regions with cold winters, the investigation of the frequency of their occurrence under Central European conditions should be part of future monitoring programmes in order to assess their potential for permitting transgene spread.

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“…The mechanism of evolved resistance in one glufosinate-resistant Italian ryegrass (Lolium perenne L. ssp. multiflorum) biotype is a one-codon change in chloroplast GS, making it less sensitive to glufosinate (Avila-Garcia et al, 2012). Other biotypes apparently have a different mode of resistance (Avila-Garcia and Mallory-Smith, 2011).…”

Section: Herbicidementioning

confidence: 97%

Biotechnology: Herbicide-Resistant Crops

Duke¹

2014

Encyclopedia of Agriculture and Food Systems

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Target‐site mutation associated with glufosinate resistance in Italian ryegrass (Lolium perenne L. ssp. multiflorum)

Abstract: This is the first report of glufosinate resistance in a weed species that involves an altered target site.

Cited by 44 publications

References 21 publications

Herbicide Programs for Control of Glyphosate-Resistant Volunteer Corn in Glufosinate-Resistant Soybean

Herbicide Programs for Control of Glyphosate-Resistant Volunteer Corn in Glufosinate-Resistant Soybean

Spread of volunteer and feral maize plants in Central Europe: recent data from Austria

Biotechnology: Herbicide-Resistant Crops

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