Photoperiod-induced clock-shifting in the circadian protein and amino acid rhythms in the larval fat body of silkworm, Bombyx mori
Journal Title: Journal of Applied and Natural Science - Year 2011, Vol 3, Issue 1
Abstract
The photoperiod-induced clock-shifting in the free running time of the circadian protein and amino acid rhythms was studied in the larval fat body of Bombyx mori. The analysis of peaks and troughs of phase response curves of the rhythm revealed that the fourth and fifth instar larvae grown under normal 12 h light and 12 h dark cycle (LD) showed 7 protein synthetic cycles, while those reared under continuous light (LL) recorded 9.5 cycles in fourth instar and 8 in fifth instar. Under continuous dark (DD), the protein rhythm maintained 8 cycles in fourth instar and 7.5 cycles in fifth instar. Clearly, both LL and DD conditions advance the 24-h free running time of the protein rhythm by durations ranging from 1.6 to 6.5 h. Comparative analysis of protein and amino acid rhythms shows that the photoperiod modulates the free running time of the former by altering the rate of amino acid mobilization.
Authors and Affiliations
B. Sailaja, S. Sivaprasad
Keywords
Related Articles
- EP ID EP93958
- DOI 10.31018/jans.v3i1.151
- Views 92
- Downloads 0
Effect of Varroa destructor Anderson and Trueman infestation on Apis mellifera L. adults
Maximum incidence of Varrosis on adults of Apis mellifera L. (8%) was recorded in second fortnight of May 2008 corresponds to the peak in V. destructor population. Percent deformity was calculated by observing 100 adult...
Physico-chemical and enzymatic changes in peach (Prunus persica (L.) Batsch) fruit in response to sodium salts during low temperature storage
‘Shan-i-Punjab’ is a leading cultivar of peach (Prunus persica (L.) Batsch) in Punjab. After harvesting peach fruits cannot be stored for a longer period under ambient conditions. To prolong the post-harvest life of frui...
Effect of prostaglandin on reproduction in relation to pituitary gonadalaxis in the fish, Cyprinus carpio (L.)
Prostaglandins are a class of fatty acids which are “traditionally” associated with a variety of autocrine and paracrine functions in the vertebrate body. In many fishes, however, F prostaglandins also function as a horm...
Effect of sowing dates and varieties for higher productivity of Indian mustard (Brassica juncea L.)
A field experiment was conducted at Agronomy Research Farm, N.D. University of Agriculture and Technology, Kumarganj, Faizabad during the Rabi season of 2011-12 to access the effect of sowing dates and varieties for high...
Calibration of DRAINMOD for prediction of water table depths and drain discharges under waterlogged Vertisols of Maharashtra, India
An estimation of optimal design parameters of subsurface drainage system through monitoring of water table depths and drain discharges are expensive in terms of time and money. The simulation modeling is an effective too...