CRY1 is involved in the take-off behaviour of migratory Cnaphalocrocis medinalis individuals.
BMC Biol
; 22(1): 169, 2024 Aug 13.
Article
em En
| MEDLINE
| ID: mdl-39135045
ABSTRACT
BACKGROUND:
Numerous insect species undertake long-distance migrations on an enormous scale, with great implications for ecosystems. Given that take-off is the point where it all starts, whether and how the external light and internal circadian rhythm are involved in regulating the take-off behaviour remains largely unknown. Herein, we explore this issue in a migratory pest, Cnaphalocrocis medinalis, via behavioural observations and RNAi experiments.RESULTS:
The results showed that C. medinalis moths took off under conditions where the light intensity gradually weakened to 0.1 lx during the afternoon or evening, and the take-off proportions under full spectrum or blue light were significantly higher than that under red and green light. The ultraviolet-A/blue light-sensitive type 1 cryptochrome gene (Cmedcry1) was significantly higher in take-off moths than that of non-take-off moths. In contrast, the expression of the light-insensitive CRY2 (Cmedcry2) and circadian genes (Cmedtim and Cmedper) showed no significant differences. After silencing Cmedcry1, the take-off proportion significantly decreased. Thus, Cmedcry1 is involved in the decrease in light intensity induced take-off behaviour in C. medinalis.CONCLUSIONS:
This study can help further explain the molecular mechanisms behind insect migration, especially light perception and signal transmission during take-off phases.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Proteínas de Insetos
/
Criptocromos
/
Mariposas
Limite:
Animals
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article