Intra-specific variation for host plant use in Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae): implications for management

2004 ◽  
Vol 23 (10) ◽  
pp. 955-964 ◽  
Author(s):  
Mustapha F.A Jallow ◽  
J Paul Cunningham ◽  
Myron P Zalucki
Keyword(s):  
Host Plant ◽  
Helicoverpa Armigera ◽  
Plant Use ◽  
Helicoverpa Armígera ◽  
Specific Variation ◽  
Host Plant Use ◽  
Lepidoptera Noctuidae ◽  
Helicoverpa Armigera Hubner

scholarly journals Comparative TMT Proteomic Analysis Unveils Unique Insights into Helicoverpa armigera (Hübner) Resistance in Cajanus scarabaeoides (L.) Thouars

2021 ◽  
Vol 22 (11) ◽  
pp. 5941
Author(s):  
Abigail Ngugi-Dawit ◽  
Isaac Njaci ◽  
Thomas J.V. Higgins ◽  
Brett Williams ◽  
Sita R. Ghimire ◽  
...  
Keyword(s):  
Host Plant ◽  
Helicoverpa Armigera ◽  
Plant Resistance ◽  
Host Plant Resistance ◽  
Proteomic Analysis ◽  
Artificial Diet ◽  
Growth Stages ◽  
Genetic Base ◽  
Helicoverpa Armígera ◽  
Helicoverpa Armigera Hubner

Pigeonpea [Cajanus cajan (L.) Millspaugh] is an economically important legume playing a crucial role in the semi-arid tropics. Pigeonpea is susceptible to Helicoverpa armigera (Hübner), which causes devastating yield losses. This pest is developing resistance to many commercially available insecticides. Therefore, crop wild relatives of pigeonpea, are being considered as potential sources of genes to expand the genetic base of cultivated pigeonpea to improve traits such as host plant resistance to pests and pathogens. Quantitative proteomic analysis was conducted using the tandem mass tag platform to identify differentially abundant proteins between IBS 3471 and ICPL 87 tolerant accession and susceptible variety to H. armigera, respectively. Leaf proteome were analysed at the vegetative and flowering/podding growth stages. H. armigera tolerance in IBS 3471 appeared to be related to enhanced defence responses, such as changes in secondary metabolite precursors, antioxidants, and the phenylpropanoid pathway. The development of larvae fed on an artificial diet with IBS 3471 lyophilised leaves showed similar inhibition with those fed on an artificial diet with quercetin concentrations with 32 mg/25 g of artificial diet. DAB staining (3,3’-diaminobenzidine) revealed a rapid accumulation of reactive oxygen species in IBS 3471. We conclude that IBS 3471 is an ideal candidate for improving the genetic base of cultivated pigeonpea, including traits for host plant resistance.

scholarly journals Toxicidade de extratos de Anadenanthera macrocarpa (Fabaceae: Mimosoideae) e Bougainvillea buttiana (Nyctaginaceae) para lepidópteros-praga

Biotemas ◽  
2017 ◽  
Vol 30 (2) ◽  
pp. 15
Author(s):  
Diego Tavares Carvalhinho ◽  
Raimundo Henrique Ferreira Rodrigues ◽  
Eliane Carneiro ◽  
Gleidyane Novais Lopes ◽  
Luciana Barboza Silva ◽  
...  
Keyword(s):  
Helicoverpa Armigera ◽  
Spodoptera Frugiperda ◽  
Helicoverpa Armígera ◽  
Lepidoptera Noctuidae ◽  
Helicoverpa Armigera Hubner

http://dx.doi.org/10.5007/2175-7925.2017v30n2p15O uso de extratos vegetais apresenta grande eficiência no manejo de pragas, destinados a produções agrícolas de pequeno e médio porte, por controlar uma gama muito grande de artrópodes. O objetivo desta pesquisa consiste em avaliar os efeitos tóxicos dos extratos de Anadenanthera macrocarpa (Fabaceae: Mimosoideae) e Bougainvillea buttiana (Nyctaginaceae) em Helicoverpa armigera (Hübner), Spodoptera cosmioides (Walker) e Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae). Lagartas de H. armigera e S. cosmioides foram mantidas em discos foliares de soja, enquanto S. frugiperda foi mantida em discos foliares de milho, tratados com os extratos aquoso diluídos nas concentrações de: 0, 500, 1.000, 2.500, 4.000, 5.000, 10.000 e 15.000 mg.L-1. Foram mensurados os efeitos letais e subletais dos extratos sobre os insetos. De acordo com os resultados obtidos, a concentração de 500 mg.L-1 do extrato de A. macrocarpa causou o maior percentual de mortalidade (93,33%) em H. armigera. O extrato de B. buttiana causou 86,67% e 60% de mortalidade em H. armigera (1.000 mg.L-1) e S. cosmioides (4.000 mg.L-1), respectivamente. A redução da emergência dos adultos foi o principal efeito subletal constatado em S. cosmioides e S. frugiperda. Considerando os resultados obtidos, destaca-se que os extratos vegetais utilizados apresentam-se como uma alternativa em potencial para o manejo de lepidópteros-praga. 

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