Correction: The Potential Distribution of Invading Helicoverpa armigera in North America: Is It Just a Matter of Time?

Kriticos, Darren J.; Ota, Noboru; Hutchison, W. D.; Beddow, Jason M.; Walsh, Tom; Tay, Wee Tek; Borchert, Daniel M.; Paula‐Moraes, Silvana V.; Czepak, Cecília; Zalucki, Myron P.

doi:10.1371/journal.pone.0133224

Cited by 34 publications

(25 citation statements)

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“…Here we used CRISPR/Cas9 editing to determine the independent and joint effects of knocking out the genes encoding ABCC2 and ABCC3 in the cotton bollworm, Helicoverpa armigera. This lepidopteran is one of the world's most devastating crop pests and has recently invaded the Americas [41,42]. Although Bt cotton producing Cry1Ac remains effective against this major pest in China, many strains of this species have been selected for resistance to Cry1Ac in the laboratory and ''early warning" of increases in the frequency of resistance to Cry1Ac has been reported from field populations in northern China exposed intensively to Bt cotton [43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Functional redundancy of two ABC transporter proteins in mediating toxicity of Bacillus thuringiensis to cotton bollworm

Wang

Zhao

et al. 2020

PLoS Pathog

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Evolution of pest resistance reduces the efficacy of insecticidal proteins from the gram-positive bacterium Bacillus thuringiensis (Bt) used widely in sprays and transgenic crops. Better understanding of the genetic basis of resistance is needed to more effectively monitor, manage, and counter pest resistance to Bt toxins. Here we used CRISPR/Cas9 gene editing to clarify the genetics of Bt resistance and the associated effects on susceptibility to other microbial insecticides in one of the world's most damaging pests, the cotton bollworm (Helicoverpa armigera). We discovered that CRISPR-mediated knockouts of ATP-binding cassette (ABC) transporter genes HaABCC2 and HaABCC3 together caused >15,000-fold resistance to Bt toxin Cry1Ac, whereas knocking out either HaABCC2 or HaABCC3 alone had little or no effect. Inheritance of resistance was autosomal and recessive. Bioassays of progeny from interstrain crosses revealed that one wild type allele of either HaABCC2 or HaABCC3 is sufficient to sustain substantial susceptibility to Cry1Ac. In contrast with previous results, susceptibility to two insecticides derived from bacteria other than Bt (abamectin and spinetoram), was not affected by knocking out HaABCC2, HaABCC3, or both. The results here provide the first evidence that either HaABCC2 or HaABCC3 protein is sufficient to confer substantial susceptibility to Cry1Ac. The functional redundancy of these two proteins in toxicity of Cry1Ac to H. armigera is expected to reduce the likelihood of field-evolved resistance relative to disruption of a toxic process where mutations affecting a single protein can confer resistance.

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Section: Introductionmentioning

confidence: 99%

Functional redundancy of two ABC transporter proteins in mediating toxicity of Bacillus thuringiensis to cotton bollworm

Wang

Zhao

et al. 2020

PLoS Pathog

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“…H. armigera and H. zea utilize similar resources and ecological niches [ 29 , 30 ]. Recent studies have suggested that H. zea derived from H. armigera and lost genes related to detoxification [ 31 , 32 ], as well as certain genes that confer resistance to insecticides [ 33 , 34 , 35 , 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative Toxicity of Helicoverpa armigera and Helicoverpa zea (Lepidoptera: Noctuidae) to Selected Insecticides

Silva

Trujillo

Bernardi

et al. 2020

Insects

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Until recently, the Old World bollworm (OWB) Helicoverpa armigera (Hübner) and the corn earworm Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae) were geographically isolated. Both species are major pests of agricultural commodities that are known to develop insecticide resistance, and they now coexist in areas where H. armigera invaded the Americas. This is the first study to compare the susceptibility of the two species to conventional insecticides. The susceptibility of third instar H. armigera and H. zea larvae to indoxacarb, methomyl, spinetoram, and spinosad was determined using a diet-overlay bioassay in a quarantine laboratory in Puerto Rico. Mortality was assessed at 48 h after exposure for up to eight concentrations per insecticide. Spinetoram exhibited the highest acute toxicity against H. armigera, with a median lethal concentration (LC50) of 0.11 µg a.i./cm2, followed by indoxacarb and spinosad (0.17 µg a.i./cm2 for both) and methomyl (0.32 µg a.i./cm2). Spinetoram was also the most toxic to H. zea (LC50 of 0.08 µg a.i./cm2), followed by spinosad (0.17 µg a.i./cm2) and methomyl (0.18 µg a.i./cm2). Indoxacarb was the least toxic to H. zea, with an LC50 of 0.21 µg a.i./cm2. These findings could serve as a comparative reference for monitoring the susceptibility of H. armigera and H. zea to indoxacarb, methomyl, spinetoram, and spinosad in Puerto Rico, and may facilitate the detection of field-selected resistance for these two species and their potential hybrids in areas recently invaded by H. armigera.

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“…Helicoverpa armigera seems to be well adapted to the climate of agricultural regions of South America. According to Kriticos et al (2015) , this insect species has spread rapidly throughout Argentina, Bolivia, Brazil, Paraguay, Uruguay, and most recently to Puerto Rico. However, no studies have been conducted to investigate whether H. armigera detected in these non-Brazilian locations were due to natural spread of Brazilian populations or they represented separate incursion events.…”

Section: Discussionmentioning

confidence: 99%

“…In the gelotopoeon group, species can only be separated by morphological characters of the adults, since the biology and morphology of the immature stages remain unknown ( Navarro et al 2009 ). Recently, H. armigera (Hübner) has been detected in Brazil ( Czepak et al 2013 , Specht et al 2013 , Tay et al 2013 ), Paraguay ( SENAVE 2013 ), Argentina ( Murúa et al 2014 ), Bolivia, Uruguay ( Kriticos et al 2015 ), Puerto Rico ( NAPPO 2014 ), and the United States ( NAPPO 2015 ). Thus, the presence of H. armigera in northwestern Argentina (NOA) has led to the inclusion of this species in the Heliothinae complex, together with H. gelotopoeon , H. zea , and C. virescens .…”

mentioning

confidence: 99%

“…It is unclear whether H. armigera can hybridize with other endemic Heliothinae species such as H. gelotopoeon. Therefore, genitalic dissection or molecular techniques are necessary to accurately identify adult males collected in pheromone traps ( Pogue 2004 , Behere et al 2008 , Specht et al 2013 , Tay et al 2013 , Leite et al 2014 , Arneodo et al 2015 , Kriticos et al 2015 ). Behere et al (2008) reported the use of two partial mitochondrial DNA genes [cytochrome oxidase subunit I (COI), cytochrome b (Cyt b)] as markers to differentiate H. armigera , H. punctigera , H. assulta , and H. zea .…”

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confidence: 99%

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Species From the Heliothinae Complex (Lepidoptera: Noctuidae) in Tucumán, Argentina, an Update of Geographical Distribution ofHelicoverpa armigera

Murúa¹,

Cazado²,

Casmuz³

et al. 2016

J Insect Sci

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The Heliothinae complex in Argentina encompasses Helicoverpa gelotopoeon (Dyar), Helicoverpa zea (Boddie), Helicoverpa armigera (Hübner), and Chloridea virescens (Fabricius). In Tucumán, the native species H. gelotopoeon is one of the most voracious soybean pests and also affects cotton and chickpea, even more in soybean-chickpea succession cropping systems. Differentiation of the Heliothinae complex in the egg, larva, and pupa stages is difficult. Therefore, the observation of the adult wing pattern design and male genitalia is useful to differentiate species. The objective of this study was to identify the species of the Heliothinae complex, determine population fluctuations of the Heliothinae complex in soybean and chickpea crops using male moths collected in pheromone traps in Tucuman province, and update the geographical distribution of H. armigera in Argentina. The species found were H. gelotopoeon, H. armigera, H. zea, and C. virescens. Regardless of province, county, crop, and year, the predominant species was H. gelotopoeon. Considering the population dynamics of H. gelotopoeon and H. armigera in chickpea and soybean crops, H. gelotopoeon was the most abundant species in both crops, in all years sampled, and the differences registered were significant. On the other hand, according to the Sistema Nacional Argentino de Vigilancia y Monitoreo de Plagas (SINAVIMO) database and our collections, H. armigera was recorded in eight provinces and 20 counties of Argentina, and its larvae were found on soybean, chickpea, sunflower crops and spiny plumeless thistle (Carduus acanthoides). This is the first report of H. armigera in sunflower and spiny plumeless thistle in Argentina.

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Correction: The Potential Distribution of Invading Helicoverpa armigera in North America: Is It Just a Matter of Time?

Cited by 34 publications

References 1 publication

Functional redundancy of two ABC transporter proteins in mediating toxicity of Bacillus thuringiensis to cotton bollworm

Functional redundancy of two ABC transporter proteins in mediating toxicity of Bacillus thuringiensis to cotton bollworm

Comparative Toxicity of Helicoverpa armigera and Helicoverpa zea (Lepidoptera: Noctuidae) to Selected Insecticides

Species From the Heliothinae Complex (Lepidoptera: Noctuidae) in Tucumán, Argentina, an Update of Geographical Distribution ofHelicoverpa armigera

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