TY - JOUR
T1 - Vitellogenin synthesis in female larvae of the gypsy moth, Lymantria dispar (L.)
T2 - suppression by juvenile hormone
AU - Fescemyer, Howard W.
AU - Masler, Edward P.
AU - Davis, Robin E.
AU - Kelly, Thomas J.
PY - 1992/11
Y1 - 1992/11
N2 - 1. 1. Fat body from feeding-phase, last instar gypsy moth females incorporates l-[35S]methionine in vitro into two vitellogenins with the same molecular masses (165 and 180 kDa) as the apo-vitellogenins found in teh hemolymph and the apo-vitellins in teh eggs. 2. 2. Both apo-vitellogenins are observed in the medium of fat body cultures, but only the 180 kDa apo-vitellogenin is observed in extracts of cultured tissue. 3. 3. Synthesis and accumulation of the apo-vitellogenins are suppressed in a dose-dependent manner by topical treatment with the juvenile hormone analog, methoprene, prior to day 4. 4. 4. This suppression suggests that a declining juvenile hormone titre is involved in the initiation of vitellogenin synthesis.
AB - 1. 1. Fat body from feeding-phase, last instar gypsy moth females incorporates l-[35S]methionine in vitro into two vitellogenins with the same molecular masses (165 and 180 kDa) as the apo-vitellogenins found in teh hemolymph and the apo-vitellins in teh eggs. 2. 2. Both apo-vitellogenins are observed in the medium of fat body cultures, but only the 180 kDa apo-vitellogenin is observed in extracts of cultured tissue. 3. 3. Synthesis and accumulation of the apo-vitellogenins are suppressed in a dose-dependent manner by topical treatment with the juvenile hormone analog, methoprene, prior to day 4. 4. 4. This suppression suggests that a declining juvenile hormone titre is involved in the initiation of vitellogenin synthesis.
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U2 - 10.1016/0305-0491(92)90366-Y
DO - 10.1016/0305-0491(92)90366-Y
M3 - Article
AN - SCOPUS:0026440055
SN - 0305-0491
VL - 103
SP - 533
EP - 542
JO - Comparative Biochemistry and Physiology -- Part B: Biochemistry and
JF - Comparative Biochemistry and Physiology -- Part B: Biochemistry and
IS - 3
ER -