ECDYSONE TITER AND METABOLISM IN RELATION TO CUTICULOGENESIS IN EMBRYOS OF LOCUSTA-MIGRATORIA
ECDYSONE TITER AND METABOLISM IN RELATION TO CUTICULOGENESIS IN EMBRYOS OF LOCUSTA-MIGRATORIA
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DOI：
10.1016/0022-1910(79)90123-9
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发表时间：
1979-01-01
影响因子：
2.2
通讯作者：
HOFFMANN, JA
中科院分区：
文献类型：
--
作者：
LAGUEUX, M;HETRU, C;HOFFMANN, JA
鸡蛋L。飞蚊症含有非常高浓度的蜕皮激素和几种其它蜕皮类固醇。在胚胎发育的时间跨度（11天）期间，在卵中观察到蜕皮激素浓度的4个不同的峰（高达8 μ M），证明了胚胎的蜕皮合成能力。只有在胚后动力学发育过程中，蜕皮激素才有效地羟基化为20-羟基蜕皮激素和20，26-二羟基蜕皮激素。峰值激素浓度的降低基本上是通过结合实现的。在光学和EM观察的基础上，在蛋中的蜕皮激素浓度的4个峰中的每一个都与胚胎组织的角质层沉积的时间精确地相关（峰1：角质层;峰2：第一胚胎角质层;峰3：第二胚胎角质层;峰4：第三胚胎角质层）。
Eggs of L. migratoria contain remarkably high concentrations of ecdysone and several other ecdysteroids. During the time-span of embryonic development (11 days), 4 distinct peaks of ecdysone concentration (up to 8 .mu.M) are observed in the egg, demonstrating the ecdysiosynthetic capacity of the embryo. Only during postblastokinetic development is ecdysone efficiently hydroxylated to 20-hydroxyecdysone and 20,26-dihydroxyecdysone. The decrease in peak hormonal concentrations is essentially achieved through conjugation. On the basis of optical and EM observations, each of the 4 peaks of ecdysone concentration in the egg was precisely correlated with the time of deposition of a cuticle by the embryonic tissues (peak 1: serosal cuticle; peak 2: 1st embryonic cuticle; peak 3: 2nd embryonic cuticle; peak 4: 3rd embryonic cuticle).