First case of glyphosate resistance in France

Fernández, Pablo; Gauvrit, Christian; Barro, Francisco; Menéndez, J.

doi:10.1007/s13593-015-0322-1

Cited by 21 publications

(46 citation statements)

References 27 publications

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“…Other glyphosate-resistant grass weeds such as: Bromus diandrus, Echinochloa colona, Eleusine indica, Lolium perenne spp. multiflorum, L. rigidum, Poa annua , among others (González-Torralva et al, 2012; Alarcón-Reverte et al, 2015; Chen et al, 2015; Cross et al, 2015; Fernandez et al, 2015; Salas et al, 2015; Yu et al, 2015; Malone et al, 2016), exhibited RI values that ranged between 3 to 19, and between 4 to <182 based on in their ED 50 or LD 50 , respectively. Differences in the level of glyphosate resistance between these species were due to various resistance mechanisms.…”

Section: Discussionmentioning

confidence: 99%

“…However, the genetic determinants of NTSR continues to be poorly know (Déyle, 2013). Reduced translocation has been reported as being a mechanism responsible for endow glyphosate resistance in different grass weed species such as D. insularis, L. multiflorum, L. perenne, L. rigidum, Sorghum halepense (Bostamam et al, 2012; de Carvalho et al, 2012; González-Torralva et al, 2012; Vila-Aiub et al, 2012; Adu-Yeboah et al, 2014; Fernandez et al, 2015; Ghanizadeh et al, 2015), among others. In some cases, it was reported as a major resistance mechanism (Adu-Yeboah et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…A. tuberculatus, B. diandrus, B. pilosa, D. insularis, E. colona, E. indica, L. perenne sp. multiflorum, L. rigidum, K. scoparia (Bostamam et al, 2012; de Carvalho et al, 2012; González-Torralva et al, 2012; Alarcón-Reverte et al, 2015; Chatham et al, 2015; Chen et al, 2015; Fernandez et al, 2015; Salas et al, 2015; Wiersma et al, 2015; Alcántara-de la Cruz et al, 2016b; Malone et al, 2016). …”

Section: Discussionmentioning

confidence: 99%

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First Resistance Mechanisms Characterization in Glyphosate-Resistant Leptochloa virgata

et al. 2016

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Leptochloa virgata (L.) P. Beauv. is an annual weed common in citrus groves in the states of Puebla and Veracruz, Mexico limiting their production. Since 2010, several L. virgata populations were identified as being resistant to glyphosate, but studies of their resistance mechanisms developed by this species have been conducted. In this work, three glyphosate-resistant populations (R8, R14, and R15) collected in citrus orchards from Mexico, were used to study their resistance mechanisms comparing them to one susceptible population (S). Dose-response and shikimic acid accumulation assays confirmed the glyphosate resistance of the three resistant populations. Higher doses of up to 720 g ae ha-1 (field dose) were needed to control by 50% plants of resistant populations. The S population absorbed between 7 and 13% more 14C-glyphosate than resistant ones, and translocated up to 32.2% of 14C-glyphosate to the roots at 96 h after treatment (HAT). The R8, R14, and R15 populations translocated only 24.5, 26.5, and 21.9%, respectively. The enzyme activity of 5-enolpyruvyl shikimate-3-phosphate synthase (EPSPS) was not different in the S, R8 and R14 populations. The R15 Population exhibited 165.9 times greater EPSPS activity. Additionally, this population showed a higher EPSPS basal activity and a substitution in the codon 106 from Proline to Serine in the EPSPS protein sequence. EPSPS gene expression in the R15 population was similar to that of S population. In conclusion, the three resistant L. virgata populations show reduced absorption and translocation of 14C-glyphosate. Moreover, a mutation and an enhanced EPSPS basal activity at target-site level confers higher resistance to glyphosate. These results describe for the first time the glyphosate resistance mechanisms developed by resistant L. virgata populations of citrus orchards from Mexico.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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First Resistance Mechanisms Characterization in Glyphosate-Resistant Leptochloa virgata

et al. 2016

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“…Moreover, the herbicide resistance of some weed species (e.g., glyphosate) leads to increasing herbicide use in crops (Andreasen and Streibig 2011;Heap 2014;Labreuche et al 2014;Fernandez et al 2015) and thus increases the global risk of exposure for insect pollinators of weeds. The impact of agri-environmental schemes on insects is probably also an indirect result of the impact of the vegetation management .…”

Section: Reduce External Inputs To Increase Biodiversitymentioning

confidence: 99%

Weed-insect pollinator networks as bio-indicators of ecological sustainability in agriculture. A review

Rollin¹,

Benelli

Benvenuti

et al. 2016

Agron. Sustain. Dev.

101

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The intensification of agricultural practices contributes to the decline of many taxa such as insects and wild plants. Weeds are serious competitors for crop production and are thus controlled. Nonetheless, weeds enhance floral diversity in agricultural landscapes. Weeds provide food for insects in exchange for pollination. The stability of mutualistic interactions in pollination networks depends on conservation of insect pollinator and weed communities. Some agricultural practices can destabilize interactions and thus modify the stability of pollination networks. Therefore, more knowledge on weed-insect networks is needed. Here, we review the interactions involved in insect visits to weed flowers in temperate arable lands. Our main findings are that (1) weed pollination by insects has a key role in maintaining weed communities in arable lands; (2) weed-insect pollinator interactions are modulated by the flowers' features and their quality which are attracting insects; (3) most weeds are associated with generalist insect pollinators; and (4) even if weed-pollinator networks are largely mutualistic, some antagonist networks can be observed when deception occurs. We propose three weed-insect pollinator networks as potential bio-indicators to evaluate the ecological sustainability of arable land management strategies in temperate areas: (1) Geometridae and Bombyliidae species visiting Caryophyllaceae, (2) Papilionidae foraging on Apiaceae, and (3) Syrphidae visiting Asteraceae.

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“…Metabolic pathways capable of degrading the herbicide to non-toxic compounds in plants also belong to these group mechanisms (De Prado and Franco, 2004; Cruz-Hipólito et al, 2009, 2011; Busi et al, 2011; de Carvalho et al, 2012; González-Torralva et al, 2012; Alcántara-de la Cruz et al, 2016a). TSR has been produced by one or more mutations in the DNA sequence (González-Torralva et al, 2014; Sammons and Gaines, 2014; Fernández et al, 2015; Yu et al, 2015), or by the overexpression of the EPSPS protein by gene amplification (Gaines et al, 2010; Salas et al, 2012, 2015). …”

Section: Introductionmentioning

confidence: 99%

Glyphosate-Resistant Parthenium hysterophorus in the Caribbean Islands: Non Target Site Resistance and Target Site Resistance in Relation to Resistance Levels

et al. 2016

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Glyphosate has been the most intensely herbicide used worldwide for decades, and continues to be a single tool for controlling weeds in woody crops. However, the adoption of this herbicide in a wide range of culture systems has led to the emergence of resistant weeds. Glyphosate has been widely used primarily on citrus in the Caribbean area, but a study of resistance in the Caribbean islands of Cuba and the Dominican Republic has never been carried out. Unfortunately, Parthenium hysterophorus has developed glyphosate-resistance in both islands, independently. The resistance level and mechanisms of different P. hysterophorus accessions (three collected in Cuba (Cu-R) and four collected in the Dominican Republic (Do-R) have been studied under greenhouse and laboratory conditions. In in vivo assays (glyphosate dose causing 50% reduction in above-ground vegetative biomass and survival), the resistance factor levels showed susceptible accessions (Cu-S ≥ Do-S), low-resistance accessions (Cu-R3 < Do-R4), medium-resistance accessions (Do-R3 < Cu-R2 < Do-R2) and high-resistance accessions (Do-R1 < Cu-R1). In addition, the resistance factor levels were similar to those found in the shikimic acid accumulation at 1000 μM of glyphosate (Cu-R1 ≥ Do-R1 > Do-R2 > Cu-R2 > Do-R3 > Do-R4 > Cu-R3 >> Cu-S ≥ Do-S). Glyphosate was degraded to aminomethylphosphonic acid, glyoxylate and sarcosine by >88% in resistant accessions except in Cu-R3 and Do-R4 resistant accessions (51.12 and 44.21, respectively), whereas a little glyphosate (<9.32%) was degraded in both susceptible accessions at 96 h after treatment. There were significant differences between P. hysterophorus accessions in the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) activity enzyme with and without different glyphosate rates. The R accessions showed values of between 0.026 and 0.21 μmol μg−1 TSP protein min−1 basal EPSPS activity values with respect to the S (0.024 and 0.025) accessions. The same trend was found in the EPSPS enzyme activity treated with glyphosate, where a higher enzyme activity inhibition (glyphosate μM) corresponded to greater resistance levels in P. hysterophorus accessions. One amino acid substitution was found at position 106 in EPSPS, consisting of a proline to serine change in Cu-R1, Do-R1 Do-R2. The above-mentioned results indicate that high resistance values are determined by the number of defense mechanisms (target-site and non-target-site resistance) possessed by the different P. hysterophorus accessions, concurrently.

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First case of glyphosate resistance in France

Cited by 21 publications

References 27 publications

First Resistance Mechanisms Characterization in Glyphosate-Resistant Leptochloa virgata

First Resistance Mechanisms Characterization in Glyphosate-Resistant Leptochloa virgata

Weed-insect pollinator networks as bio-indicators of ecological sustainability in agriculture. A review

Glyphosate-Resistant Parthenium hysterophorus in the Caribbean Islands: Non Target Site Resistance and Target Site Resistance in Relation to Resistance Levels

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