Hormonal regulation of sex pheromone biosynthesis in the turnip moth, Agrotis segetum
(1995) In Archives of Insect Biochemistry and Physiology 30(1). p.41-59- Abstract
Pheromone production in the female turnip moth, Agrotis segetum, is under the control of a brain factor. This factor was demonstrated to be a proteinaceous substance termed pheromone biosynthesis activating neuropeptide‐like substance (PBAN‐like substance). The sex pheromone of Swedish A. segetum includes (Z)‐5‐decenyl acetate, (Z)‐7‐dodecenyl acetate, and (Z)‐9‐tetradecenyl acetate as major components. Decapitation of a female decreased pheromone production significantly. Pheromone production was restored by injection of homogenates of either male or female brain‐suboesophageal ganglion or the corpora cardiaca alone. Pheromonotropic activity was also found in homogenates of the female thoracic ganglion and abdominal ganglion that were... (More)
Pheromone production in the female turnip moth, Agrotis segetum, is under the control of a brain factor. This factor was demonstrated to be a proteinaceous substance termed pheromone biosynthesis activating neuropeptide‐like substance (PBAN‐like substance). The sex pheromone of Swedish A. segetum includes (Z)‐5‐decenyl acetate, (Z)‐7‐dodecenyl acetate, and (Z)‐9‐tetradecenyl acetate as major components. Decapitation of a female decreased pheromone production significantly. Pheromone production was restored by injection of homogenates of either male or female brain‐suboesophageal ganglion or the corpora cardiaca alone. Pheromonotropic activity was also found in homogenates of the female thoracic ganglion and abdominal ganglion that were obtained during scotophase. Injection of female brain and thoracic ganglion homogenates made from insects during the scotophase induced two and four times as much Z7‐12:OAc, respectively, as injection with similar homogenates from photophase. As little as one‐eighth female equivalent (FE) brain homogenate was sufficient to increase the amount of Z7‐12:OAc. The effect of brain homogenate on pheromone titer reached its maximum after 30 min. The activity of the PBAN‐like substance present in female brain extracts was not correlated to the age of the donor. Injection of hemolymph collected during either photophase or scotophase into decapitated females did not increase the pheromone titer. The target site of the PBAN‐like substance was not the pheromone gland, and the ventral nerve cord was not involved in the transportation of the PBAN‐like substance, which implies a mode of action different from what has been reported in other moths. Brain homogenates obtained during photophase from females of African A. segetum, Spodoptera littoralis, or Ostrinia nubilalis as well as synthetic Bombyx‐PBAN also induced pheromone production in decapitated Swedish female A. segetum. © 1995 Wiley‐Liss, Inc.
(Less)
- author
- Zhu, Junwei ; Millar, Jocelyn and Löfstedt, Christer LU
- organization
- publishing date
- 1995-01-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Incorporation, Labeled precursors, Lepidoptera, Noctuidae, PBAN‐like substance, Pheromone production
- in
- Archives of Insect Biochemistry and Physiology
- volume
- 30
- issue
- 1
- pages
- 19 pages
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- scopus:84985653058
- ISSN
- 0739-4462
- DOI
- 10.1002/arch.940300104
- project
- Evolutionary mechanisms of pheromone divergence in Lepidoptera
- language
- English
- LU publication?
- yes
- id
- d6caa0b2-df94-47d7-a13e-5bcd4e95f4f1
- date added to LUP
- 2020-05-26 16:26:54
- date last changed
- 2024-05-16 11:34:45
@article{d6caa0b2-df94-47d7-a13e-5bcd4e95f4f1,
abstract = {{<p>Pheromone production in the female turnip moth, Agrotis segetum, is under the control of a brain factor. This factor was demonstrated to be a proteinaceous substance termed pheromone biosynthesis activating neuropeptide‐like substance (PBAN‐like substance). The sex pheromone of Swedish A. segetum includes (Z)‐5‐decenyl acetate, (Z)‐7‐dodecenyl acetate, and (Z)‐9‐tetradecenyl acetate as major components. Decapitation of a female decreased pheromone production significantly. Pheromone production was restored by injection of homogenates of either male or female brain‐suboesophageal ganglion or the corpora cardiaca alone. Pheromonotropic activity was also found in homogenates of the female thoracic ganglion and abdominal ganglion that were obtained during scotophase. Injection of female brain and thoracic ganglion homogenates made from insects during the scotophase induced two and four times as much Z7‐12:OAc, respectively, as injection with similar homogenates from photophase. As little as one‐eighth female equivalent (FE) brain homogenate was sufficient to increase the amount of Z7‐12:OAc. The effect of brain homogenate on pheromone titer reached its maximum after 30 min. The activity of the PBAN‐like substance present in female brain extracts was not correlated to the age of the donor. Injection of hemolymph collected during either photophase or scotophase into decapitated females did not increase the pheromone titer. The target site of the PBAN‐like substance was not the pheromone gland, and the ventral nerve cord was not involved in the transportation of the PBAN‐like substance, which implies a mode of action different from what has been reported in other moths. Brain homogenates obtained during photophase from females of African A. segetum, Spodoptera littoralis, or Ostrinia nubilalis as well as synthetic Bombyx‐PBAN also induced pheromone production in decapitated Swedish female A. segetum. © 1995 Wiley‐Liss, Inc.</p>}},
author = {{Zhu, Junwei and Millar, Jocelyn and Löfstedt, Christer}},
issn = {{0739-4462}},
keywords = {{Incorporation; Labeled precursors; Lepidoptera; Noctuidae; PBAN‐like substance; Pheromone production}},
language = {{eng}},
month = {{01}},
number = {{1}},
pages = {{41--59}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Archives of Insect Biochemistry and Physiology}},
title = {{Hormonal regulation of sex pheromone biosynthesis in the turnip moth, Agrotis segetum}},
url = {{http://dx.doi.org/10.1002/arch.940300104}},
doi = {{10.1002/arch.940300104}},
volume = {{30}},
year = {{1995}},
}