Altered Octopamine synthesis impairs tyrosine metabolism affecting Helicoverpa armigera vitality.

Tyramine β-hydroxylase (TβH) is a key enzyme in the biosynthesis of octopamine (OA), a vital neurohormone in invertebrates. This study explores the expression patterns and functional role of Helicoverpa armigera TβH (HaTβH) across various tissues and developmental stages. HaTβH expression was highest in the head and adult male stages, reflecting tissue-specific and developmental regulation.

Tyramine-Mediated Hyperactivity Modulates the Dietary Habits in Helicoverpa armigera.

Helicoverpa armigera exhibits extensive variability in feeding habits and food selection. Neuronal regulation of H. armigera feeding behavior is primarily influenced by biogenic amines such as Tyramine (TA) and Octopamine (OA).