INTERACTIONS BETWEEN SEGMENT POLARITY GENES AND THE GENERATION OF THE SEGMENTAL PATTERN IN DROSOPHILA

被引:59
作者
HIDALGO, A [1 ]
机构
[1] UNIV OXFORD, DEPT ZOOL, IMPERIAL CANC RES FUND, DEV BIOL UNIT, OXFORD OX1 3PS, ENGLAND
关键词
PATTERN FORMATION; DROSOPHILA; SEGMENT-POLARITY GENES; WINGLESS; GOOSEBERRY;
D O I
10.1016/0925-4773(91)90059-F
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Although mutations in the segment polarity genes wingless, engrailed, hedgehog, gooseberry and cubitus-interruptus(D) all affect the region of naked cuticle within each segment of the Drosophila larva, subtle phenotypic differences suggest that these genes play different roles in segmental patterning. In this paper, the regulative interactions between these genes are analysed. They have revealed that the products of most of these genes accomplish more than one function during embryogenesis. Whereas early on a positive feed-back loop involving wg, en and hh maintains the expression of wg and en in the extremes of each parasegment, later on wg and en become independent from each other. en appears to regulate the expression of hh and ptc, while wg depends on gsb and ci(D).
引用
收藏
页码:77 / 87
页数:11
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