Insect Pest Management in Cotton

Razaq, Muhammad; Mensah, Robert; Athar, Habib‐ur‐Rehman

doi:10.1002/9781119385523.ch5

Cited by 20 publications

(16 citation statements)

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“…Consequently began a new era of gene pyramiding (c ry1Ac and c ry2Ab in Bollgard II, Monsanto) for insect resistance which involved the introduction of gene combinations to provide broad spectrum of efficacy toward insect herbivory ( Chen et al, 2017 ; Moghaieb et al, 2019 ; Siddiqui et al, 2019 ; Katta et al, 2020 ; Muralimohan et al, 2020 ). Pyramided genes exhibited effective toxicity and also restricted evolution of resistant pest population in engineered commercial crop plants ( Razaq et al, 2019 ; Wei et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Exploitation of Novel Bt ICPs for the Management of Helicoverpa armigera (Hübner) in Cotton (Gossypium hirsutum L.): A Transgenic Approach

et al. 2021

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Cotton is a commercial crop of global importance. The major threat challenging the productivity in cotton has been the lepidopteron insect pest Helicoverpa armigera or cotton bollworm which voraciously feeds on various plant parts. Biotechnological interventions to manage this herbivore have been a universally inevitable option. The advent of plant genetic engineering and exploitation of Bacillus thuringiensis (Bt) insecticidal crystal proteins (ICPs) marked the beginning of plant protection in cotton through transgenic technology. Despite phenomenal success and widespread acceptance, the fear of resistance development in insects has been a perennial concern. To address this issue, alternate strategies like introgression of a combination of cry protein genes and protein-engineered chimeric toxin genes came into practice. The utility of chimeric toxins produced by domain swapping, rearrangement of domains, and other strategies aid in toxins emerging with broad spectrum efficacy that facilitate the avoidance of resistance in insects toward cry toxins. The present study demonstrates the utility of two Bt ICPs, cry1AcF (produced by domain swapping) and cry2Aa (produced by codon modification) in transgenic cotton for the mitigation of H. armigera. Transgenics were developed in cotton cv. Pusa 8–6 by the exploitation of an apical meristem-targeted in planta transformation protocol. Stringent trait efficacy-based selective screening of T1 and T2 generation transgenic plants enabled the identification of plants resistant to H. armigera upon deliberate challenging. Evaluation of shortlisted events in T3 generation identified a total of nine superior transgenic events with both the genes (six with cry1AcF and three with cry2Aa). The transgenic plants depicted 80–100% larval mortality of H. armigera and 10–30% leaf damage. Molecular characterization of the shortlisted transgenics demonstrated stable integration, inheritance and expression of transgenes. The study is the first of its kind to utilise a non-tissue culture-based transformation strategy for the development of stable transgenics in cotton harbouring two novel genes, cry1AcF and cry2Aa for insect resistance. The identified transgenic events can be potential options toward the exploitation of unique cry genes for the management of the polyphagous insect pest H. armigera.

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Section: Introductionmentioning

confidence: 99%

Exploitation of Novel Bt ICPs for the Management of Helicoverpa armigera (Hübner) in Cotton (Gossypium hirsutum L.): A Transgenic Approach

et al. 2021

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“…It is grown mainly to obtain fiber as a raw material for the textile industry (FAO, 2015). In 2019, 82,589,031 tons of cotton were produced from approximately 38,640,608 hectares (FAOSTAT, 2019) cultivated in more than 78 countries (Razaq et al, 2020). This represents 2.3% of all cultivated land in the world and indicates its economic and social importance (FAO, 2015).Until the end of the 19th century, there were few cases of pests associated with cotton (Razaq et al, 2020).…”

mentioning

confidence: 99%

“…In 2019, 82,589,031 tons of cotton were produced from approximately 38,640,608 hectares (FAOSTAT, 2019) cultivated in more than 78 countries (Razaq et al, 2020). This represents 2.3% of all cultivated land in the world and indicates its economic and social importance (FAO, 2015).Until the end of the 19th century, there were few cases of pests associated with cotton (Razaq et al, 2020). However, the large number of hectares planted in different biogeographic regions, resulted in the insertion of a variety of arthropod species within the trophic networks of the agroecosystem, which expanded the diversity of these organisms, compared to what was originally found in center of origin (Naranjo, 2011).…”

mentioning

confidence: 99%

“…Until the end of the 19th century, there were few cases of pests associated with cotton (Razaq et al, 2020). However, the large number of hectares planted in different biogeographic regions, resulted in the insertion of a variety of arthropod species within the trophic networks of the agroecosystem, which expanded the diversity of these organisms, compared to what was originally found in center of origin (Naranjo, 2011).…”

mentioning

confidence: 99%

“…Given the importance of the crop, as well as the existing number of arthropods, the application of synthetic insecticides is the main method used to control these pests (Razaq et al, 2020), which negatively impacts human health and the productivity of the plant cultivation are not based on an agroecosystem analysis (FAO, 2015). In addition, laboratory and field assays report that applications of organosynthetic insecticides used for the control of important pests in cotton also have side effects for non-target organisms such as predators and parasitoids (Ruberson and Roberts, 2004;Prabhaker et al, 2007;El-Wakeil et al, 2013).…”

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confidence: 99%

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Side Effects of Lambda Cyhalothrin and Thiamethoxam on Insect Pests and Natural Enemies Associated with Cotton

Zambrano¹,

Arteaga²,

Velasquez³

et al. 2021

SJA

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T he genus Gossypium (Malvaceae) comprises of 40 species, among which four are commercially cultivated. One of the latter, the upland cotton, Gossypium hirsutum L., predominates with 95% of the total production area (FAO, 2015;Trapero et al., 2016). It is grown mainly to obtain fiber as a raw material for the textile industry (FAO, 2015). In 2019, 82,589,031 tons of cotton were produced from approximately 38,640,608 hectares (FAOSTAT, 2019) cultivated in more than 78 countries (Razaq et al., 2020). This represents 2.3% of all cultivated land in the world and indicates its economic and social importance (FAO, 2015).Until the end of the 19th century, there were few cases of pests associated with cotton (Razaq et al., 2020). However, the large number of hectares planted in different biogeographic regions, resulted in the insertion of a variety of arthropod species within the trophic networks of the agroecosystem, which expanded the diversity of these organisms, compared to what was originally found in center of origin (Naranjo, 2011). There are currently 1,300 species of phytophagous arthropods associated with cotton, Abstract | Cotton (Gossypium hirsutum) is cultivated mainly for the production of fiber for the textile industry and is attacked by different insect pests, therefore it is produced with frequent pesticide applications. Research was conducted to evaluate the effect of lambda cyhalothrin + thiamethoxam on the incidence of insect pests and its associated natural enemies. Results revealed that populations of B. tabaci were higher in plots treated with lambda cyhalothrin + thiamethoxam associated with low levels of parasitism. Further, A. gossypii were high and their parasitism low, in both treated and untreated plots. Individuals of T. palmi, B. thurberiella, H. virescens and A. vestitus were low in the treatments; while individuals of Dysdercus spp. were lower in the plots treated with the chemical insecticide. However, the predators, Coleomegilla maculata, Cycloneda sanguinea, Cheilomenes sexmaculata and Zelus sp., were inferior in the treated plots. Yield ranged from 1.2 to 1.4 tons. Thrips palmi is first reported feeding on cotton in Ecuador. The results showed high populations of B. tabaci in the chemical treatment, and its suppressive effect on the beneficial entomofauna. Future research should focus on evaluating the selective applications of some insecticides to control A. gossypii and Dysdercus spp. infestations that impact as little as possible on non-target organisms such as parasitoids and predators.

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Virulence and transgenerational effects of Metarhizium anisopliae on Oxycarenus hyalinipennis

Shaukat,

Freed,

Ahmed

et al. 2023

Pest Management Science

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BACKGROUNDInsect pests cause major yield losses to Gossypium hirsutum, often requiring the use of chemical insecticides. To avoid human health, environmental and resistance problems, entomopathogenic fungi (EPF) can be used to control insect pests. In our study, the pathogenicity of Metarhizium anisopliae to Oxycarenus hyalinipennis was determined by the immersion method. Furthermore, the sublethal and lethal effects of M. anisopliae on the biological parameters of O. hyalinipennis were investigated by age‐stage, two‐sex life table software.RESULTSM. anisopliae infection was lethal to the fourth instar of O. hyalinipennis with LC50 values of 8.84 × 104 spores mL−1. The sublethal and lethal concentrations of M. anisopliae not only affected the parental generation (F0) but also the demographic parameters of the offspring of the filial generation (F1). Transgenerational results of F1 infected with M. anisopliae showed decreased net reproductive rate (R0), intrinsic rate of increase (r) and mean generation time (T) compared to those of the control group. The larval developmental duration significantly decreased to 15.52 and 19.02 days in the LC50 and LC20 groups, respectively, compared to 21.08 days in the control group. There was a noteworthy decline in mean fecundity in the LC50 and LC20 groups, i.e., 16.0 and 20.96 eggs, compared to 33.26 eggs in the control group. Adult longevity was likewise considerably reduced in the LC50 and LC20 treated groups.CONCLUSIONThe study showed that M. anisopliae can have an enduring impact on the biological parameters of O. hyalinipennis, which may enhance its use in eco‐friendly management programs. © 2023 Society of Chemical Industry.

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Insect Pest Management in Cotton

Cited by 20 publications

References 102 publications

Exploitation of Novel Bt ICPs for the Management of Helicoverpa armigera (Hübner) in Cotton (Gossypium hirsutum L.): A Transgenic Approach

Exploitation of Novel Bt ICPs for the Management of Helicoverpa armigera (Hübner) in Cotton (Gossypium hirsutum L.): A Transgenic Approach

Side Effects of Lambda Cyhalothrin and Thiamethoxam on Insect Pests and Natural Enemies Associated with Cotton

Virulence and transgenerational effects of Metarhizium anisopliae on Oxycarenus hyalinipennis

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