Juvenile hormone induction of pheromone gland PBAN-responsiveness in Helicoverpa armigera females |
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| Institution: | 1. Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China;2. Department of Biocontrol, Institute of Plant Protection, Heilongjiang Academy of Agricultural Sciences, Harbin, 150080, China;3. Key Laboratory of Molecular Biology of Heilongjiang Province, College of Life Sciences, Heilongjiang University, Harbin 150080, China;1. Key Laboratory of Agri-Food Safety of Anhui Province, Anhui Agricultural University, No.130 Changjiangxilu, Hefei 230036, China;2. Research & Development Center of Biorational Pesticide, Northwest Agriculture and Forestry University, No. 3 Taicheng Road, Yangling, Shaanxi 712100, China |
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| Abstract: | The maturation of corpora allata (CA) and the competence of pheromone glands in the adult moth Helicoverpa armigera, are both age-related and appear to be correlated. Sex pheromone glands of pharate adults do not produce sex pheromone independently, nor do they respond to exogenous PBAN. Newly emerged moths produce significantly less pheromone than day one moths. JH (juvenile hormone) II was found to be the main JH form produced by CA in vitro. JH II primed pheromone glands of pharate adults to respond to PBAN. In addition, injection or topical application of JH II to newly-emerged females induced pheromone production in the presence of PBAN. Our findings suggest that JH is involved in the initiation of pheromone production of Helicoverpa armigera. |
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