کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2841732 1571012 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Distinct effects of different temperatures on diapause termination, yolk morphology and MAPK phosphorylation in the silkworm, Bombyx mori
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش حشره شناسی
پیش نمایش صفحه اول مقاله
Distinct effects of different temperatures on diapause termination, yolk morphology and MAPK phosphorylation in the silkworm, Bombyx mori
چکیده انگلیسی

Previously, we showed that chilling of diapausing Bombyx eggs activated ERK/MAPK in yolk cells coincidentally with acquisition of developmental competence, and that ERK regulates diapause termination via activating transcription of key enzyme genes for ecdysteroid and sorbitol metabolism. To further elucidate the molecular mechanisms of temperature signaling and diapause termination, effects of different temperatures on diapause termination, yolk morphology, and ERK and p38 MAPK phosphorylation were analyzed. We confirmed the coincidence of diapause termination and changes of phosphorylated levels of ERK and p38 MAPK at various temperatures. Our study also shows that different temperatures have distinct effects on diapause termination and yolk morphology, however, these two effects did not always coincide. Our analyses suggest the possibility that the effects on diapause termination and yolk morphology are independently regulated by ERK. We observed that a temperature shift alters diapause intensity reversibly, and coincidental changes of phosphorylated ERK levels suggest that ERK may have a role in regulating the diapause intensity. The present study suggests that ERK and p38 MAPK have roles for transmitting the temperature signals that are important for diapause termination.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Insect Physiology - Volume 52, Issues 11–12, November–December 2006, Pages 1194–1201
نویسندگان
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