Results 41 to 50 of about 22,549 (224)

Identification of a Conserved Prophenoloxidase Activation Pathway in Cotton Bollworm Helicoverpa armigera

Frontiers in Immunology, 2020
Melanization is a prominent insect humoral response for encapsulation of and killing invading pathogens. It is mediated by a protease cascade composed of a modular serine protease (SP), and clip domain SPs (cSPs), which converts prophenoloxidase (PPO ...
Qianran Wang, Mengyi Yin, Chuanfei Yuan, Xijia Liu, Zhìhóng Hú, Z. Zou, Manli Wang   +6 more
semanticscholar   +1 more source

ANTIBIOSIS AND ANTIXENOSIS IN TOMATO GENOTYPES AGAINST Helicoverpa armigera HUBNER

Tropical and Subtropical Agroecosystems
Background. Farmers rely on the use of synthetic insecticides in managing Helicoverpa armigera, hole-boring insect pest on tomato, but they are detrimental to human health.
Folorunso Dotun Omotoso, Olajumoke Yemisi Alabi, Mobolade D. Akinbuluma, Olajumoke Oke Fayinminnu   +3 more
doaj   +1 more source

Genomic innovations, transcriptional plasticity and gene loss underlying the evolution and divergence of two highly polyphagous and invasive Helicoverpa pest species

BMC Biology, 2017
Background Helicoverpa armigera and Helicoverpa zea are major caterpillar pests of Old and New World agriculture, respectively. Both, particularly H. armigera, are extremely polyphagous, and H. armigera has developed resistance to many insecticides. Here
S. L. Pearce, D. F. Clarke, P. D. East, S. Elfekih, K. H. J. Gordon, L. S. Jermiin, A. McGaughran, J. G. Oakeshott, A. Papanikolaou, O. P. Perera, R. V. Rane, S. Richards, W. T. Tay, T. K. Walsh, A. Anderson, C. J. Anderson, S. Asgari, P. G. Board, A. Bretschneider, P. M. Campbell, T. Chertemps, J. T. Christeller, C. W. Coppin, S. J. Downes, G. Duan, C. A. Farnsworth, R. T. Good, L. B. Han, Y. C. Han, K. Hatje, I. Horne, Y. P Huang, D. S. T. Hughes, E. Jacquin-Joly, W. James, S. Jhangiani, M. Kollmar, S. S. Kuwar, S. Li, N-Y. Liu, M. T. Maibeche, J. R. Miller, N. Montagne, T. Perry, J. Qu, S. V. Song, G. G. Sutton, H. Vogel, B. P. Walenz, W. Xu, H-J. Zhang, Z. Zou, P. Batterham, O. R. Edwards, R. Feyereisen, R. A. Gibbs, D. G. Heckel, A. McGrath, C. Robin, S. E. Scherer, K. C. Worley, Y. D. Wu   +61 more
doaj   +1 more source

Coocclusion of Helicoverpa armigera Single Nucleopolyhedrovirus (HearSNPV) and Helicoverpa armigera Multiple Nucleopolyhedrovirus (HearMNPV): Pathogenicity and Stability in Homologous and Heterologous Hosts

Viruses, 2022
Helicoverpa armigera single nucleopolyhedrovirus (HearSNPV) is a virulent pathogen of lepidopterans in the genera Heliothis and Helicoverpa, whereas Helicoverpa armigera multiple nucleopolyhedrovirus (HearSNPV) is a different virus species with a broader host range. This study aimed to examine the consequences of coocclusion of HearSNPV and HearMNPV on
Maite Arrizubieta, Oihane Simón, Adriana Ricarte-Bermejo, Miguel López-Ferber, Trevor Williams, Primitivo Caballero   +5 more
openaire   +6 more sources

Host plant induced variation in gut bacteria of Helicoverpa armigera. [PDF]

PLoS ONE, 2012
Helicoverpa are important polyphagous agricultural insect pests and they have a worldwide distribution. In this study, we report the bacterial community structure in the midgut of fifth instar larvae of Helicoverpa armigera, a species prevalent in the ...
Natarajan Gayatri Priya, Abhishek Ojha, Mayur K Kajla, Anand Raj, Raman Rajagopal   +4 more
doaj   +1 more source

Adaptive Introgression across Semipermeable Species Boundaries between Local Helicoverpa zea and Invasive Helicoverpa armigera Moths

bioRxiv, 2019
Hybridization between invasive and native species has raised global concern given the dramatic increase in species range shifts and pest outbreaks due to climate change, development of suitable agroecosystems, and anthropogenic dispersal.
Wendy A. Valencia-Montoya, S. Elfekih, Henry L. North, J. Meier, I. Warren, W. T. Tay, K. Gordon, A. Specht, S. Paula-Moraes, R. Rane, T. Walsh, C. Jiggins   +11 more
semanticscholar   +1 more source

Screening of Helicoverpa armigera Mobilome Revealed Transposable Element Insertions in Insecticide Resistance Genes

Insects, 2020
Simple Summary Transposable elements (TEs) are mobile DNA sequences that can copy themselves within a host genome. TE-mediated changes in regulation can lead to massive and rapid changes in expression, responses that are potentially highly adaptive when ...
Khouloud Klai, B. Chénais, Marwa Zidi, Salma Djebbi, A. Caruso, F. Denis, Johann Confais, M. Badawi, N. Casse, Maha Mezghani Khemakhem   +9 more
semanticscholar   +1 more source

Evolutionary constraints in host shifts: Limited adaptation of Plutella xylostella to cardenolide‐defended Erysimum cheiranthoides

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Coevolutionary arms races between plants and insects, in which gains of novel plant defences select for counteradaptations in herbivores, are key drivers of biodiversity.
Broti Biswas, Erik van Bergen, Teresa Vaello, Laura J. Dällenbach, Christopher W. Wheat, Tobias Züst   +5 more
wiley   +1 more source

The cotton bollworm (Helicoverpa armigera) and Azuki bean beetle (Callosobruchus chinensis): major chickpea (Cicer arietinum L.) production challenges on smallholder farmers in Ethiopia

Journal of Basic and Applied Zoology, 2022
Background Chickpea (Cicer arietinum L.) is one of the most principally important legume crops in Ethiopia. Its production is mainly constrained by insect pests.
Tarekegn Fite, Tadele Tefera
doaj   +1 more source

Helicoverpa armigera Distribution in Gossypium Varieties Crop

Bulletin of Science and Practice, 2022
A review of the biological development of the Helicoverpa armigera and its harmfulness on Gossypium varieties is given. Research results also showed that first-generation caterpillars mainly damage flower buds and young buds in the upper part of plants.
Z. Buriev, M. Ablazova, D. Zuparova, Sh. Kushakov   +3 more
openaire   +1 more source