Changes of inheritance mode and fitness in Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) along with its resistance evolution to Cry1Ac toxin

Liang, Gemei; Wu, Kongming; Yu, Hong-Kun; Li, Ke‐Ke; Xue, Feng; Guo, Yong

doi:10.1016/j.jip.2007.09.007

Cited by 92 publications

(91 citation statements)

References 42 publications

(51 reference statements)

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“…The dominance level of Cry1Ac resistance in P. gossypiella was toxin concentration dependent. Similar results were also found in the tobacco budworm, Heliothis virescens (F.), the primary target of Bt cotton in the United States (Gould et al, 1992(Gould et al, , 1995 and in the cotton bollworm, Helicoverpa armigera (Hübner), the primary target pest of Bt cotton in Australia, China, and India (Kranthi et al, 2006;Liang et al, 2008). The results of the current study with D. saccharalis resistance to Cry1Ab toxin appear to agree with the results of these previous studies.…”

Section: Discussionsupporting

confidence: 91%

“…In most of these reports, high levels of resistance were usually controlled by one or a few autosomal, recessive or incompletely recessive gene(s) (Liu et al, 2001;Tabashnik et al, 2002;Sayyed et al, 2003Sayyed et al, , 2004Augustin et al, 2004;Kain et al, 2004;Liang et al, 2008;Pereira et al, 2008). In contrast, low levels of resistance could exhibit more dominant traits compared to those instances of intense levels of resistance (Gould et al, 1992;Huang et al, 1999;Kranthi et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Inheritance of resistance to Bacillus thuringiensis Cry1Ab protein in the sugarcane borer (Lepidoptera: Crambidae)

Huang

Leonard

et al. 2009

Journal of Invertebrate Pathology

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Inheritance of resistance to Bacillus thuringiensis Cry1Ab protein in the sugarcane borer (Lepidoptera: Crambidae)

Huang

Leonard

et al. 2009

Journal of Invertebrate Pathology

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“…H. armigera larvae were reared on an artificial diet (Liang et al, 2008) and adult moths were cultured with a 10% sugar and 2% vitamin mix (Liang et al, 1999) sequences and low-quality reads were trimmed and clean reads were used for de novo assembly using Trinity (Grabherr et al, 2011). The assembled contigs were annotated using BLASTx and BLASTn against the NCBI non-redundant nucleic acid database (NT) and the NCBI non-redundant protein database (NR), using a cut-off E-value of 10 -5 .…”

Section: Insect Culturementioning

confidence: 99%

Characterization of a novel member of genus Iflavirus in Helicoverpa armigera

Yang

et al. 2017

Journal of Invertebrate Pathology

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The cotton bollworm, Helicoverpa armigera, is one of the most important agricultural pests of many economic crops worldwide. Herein, we found a novel single-strand RNA virus by RNA-Seq and Polymerase Chain Reaction (PCR) method in H. armigera named Helicoverpa armigera iflavirus (HaIV), which possessed a genome with 10,017 nucleotides in length and contained a single large open reading frame (ORF) encoding a putative polyprotein of 3,021 amino acids with a predicted molecular mass of 344.16 kDa and a theoretical isoelectric point (pI) of 6.45. The deduced amino acid sequence showed highest similarity (61.0%) with the protein of Lymantria dispar Iflavirus 1. Phylogenetic analysis with putative RdRp amino acid sequences indicated that the virus clustered with members of the genus Iflavirus. The virus was mainly distributed in the fat body of its host and was found to be capable of both horizontal and vertical transmission. The efficiency of perorally horizontal transmission was dose dependent (100% infection rate with a viral dose of 10 8 copies /μl) while vertical transmission efficiency was found to be relatively low (< 28.57%).These results suggest that we have found a novel member of genus Iflavirus in H.armigera.

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“…This is observed as decreased rates of development, fecundity, survival, or mating competitiveness of resistant insects relative to susceptible ones in the absence of Bt toxins. Liang et al [15] compared the relative fitness of Bt-resistant and -susceptible strains of H. armigera. Their results showed that the resistant insects showed slower larval development, decreased pupal weight, and lower fecundity and fertility.…”

Section: Resistance Selection and Fitness Costsmentioning

confidence: 99%

Cotton bollworm resistance to Bt transgenic cotton: A case analysis

Liu

Gao

et al. 2010

Sci. China Life Sci.

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Cotton bollworm (Helicoverpa armigera) is one of the most serious insect pests of cotton. Transgenic cotton expressing Cry toxins derived from a soil bacterium, Bacillus thuringiensis (Bt), has been produced to target this pest. Bt cotton has been widely planted around the world, and this has resulted in efficient control of bollworm populations with reduced use of synthetic insecticides. However, evolution of resistance by this pest threatens the continued success of Bt cotton. To date, no field populations of bollworm have evolved significant levels of resistance; however, several laboratory-selected Cry-resistant strains of H. armigera have been obtained, which suggests that bollworm has the capacity to evolve resistance to Bt. The development of resistance to Bt is of great concern, and there is a vast body of research in this area aimed at ensuring the continued success of Bt cotton. Here, we review studies on the evolution of Bt resistance in H. armigera, focusing on the biochemical and molecular basis of Bt resistance. We also discuss resistance management strategies, and monitoring programs implemented in China, Australia, and India.

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Changes of inheritance mode and fitness in Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) along with its resistance evolution to Cry1Ac toxin

Cited by 92 publications

References 42 publications

Inheritance of resistance to Bacillus thuringiensis Cry1Ab protein in the sugarcane borer (Lepidoptera: Crambidae)

Inheritance of resistance to Bacillus thuringiensis Cry1Ab protein in the sugarcane borer (Lepidoptera: Crambidae)

Characterization of a novel member of genus Iflavirus in Helicoverpa armigera

Cotton bollworm resistance to Bt transgenic cotton: A case analysis

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