1 Introduction Lady beetle (Coccinella septempunctata) is an important natural enemy of aphids.Our data show that JH produced in the corpora allata (CA) in the adult beetle playsa key role in regulating its reproducti...1 Introduction Lady beetle (Coccinella septempunctata) is an important natural enemy of aphids.Our data show that JH produced in the corpora allata (CA) in the adult beetle playsa key role in regulating its reproduction. Recently, it is demonstrated that CA ininsects are target tissues of allatostatin and allatotropin. Juvenile hormone (JH) issynthesized and released by CA and plays a vital role in insect development, primarilyin the control of metamorphosis, sexual maturation and reproduction. The activity ofCA during reproduction could be modulated by stimulatory factors (Allatotropicfactor, ATF), inhibitory factors (Allatostatic factor AST) or both.展开更多
The juvenile hormones (JH) are critical to the contro1 of insect development andreproduction. The production of JH by the corpora allata (CA) is regulatd in part bypeptides originating from brain. One group of these p...The juvenile hormones (JH) are critical to the contro1 of insect development andreproduction. The production of JH by the corpora allata (CA) is regulatd in part bypeptides originating from brain. One group of these peptides termed allatostatins (AST)reversibly inhibits the biosynthesis of JH invitro. The correlation of these events suggeststhat AST, i.e. their biosynthesis, are important in the regulation of JH biosynthesis.展开更多
基金Project supported by the National Natural Science Foundation of China.
文摘1 Introduction Lady beetle (Coccinella septempunctata) is an important natural enemy of aphids.Our data show that JH produced in the corpora allata (CA) in the adult beetle playsa key role in regulating its reproduction. Recently, it is demonstrated that CA ininsects are target tissues of allatostatin and allatotropin. Juvenile hormone (JH) issynthesized and released by CA and plays a vital role in insect development, primarilyin the control of metamorphosis, sexual maturation and reproduction. The activity ofCA during reproduction could be modulated by stimulatory factors (Allatotropicfactor, ATF), inhibitory factors (Allatostatic factor AST) or both.
文摘The juvenile hormones (JH) are critical to the contro1 of insect development andreproduction. The production of JH by the corpora allata (CA) is regulatd in part bypeptides originating from brain. One group of these peptides termed allatostatins (AST)reversibly inhibits the biosynthesis of JH invitro. The correlation of these events suggeststhat AST, i.e. their biosynthesis, are important in the regulation of JH biosynthesis.
