NEGATIVE REGULATION OF THE ARABIDOPSIS HOMEOTIC GENE AGAMOUS BY THE APETALA2 PRODUCT
NEGATIVE REGULATION OF THE ARABIDOPSIS HOMEOTIC GENE AGAMOUS BY THE APETALA2 PRODUCT
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DOI：
10.1016/0092-8674(91)90551-9
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发表时间：
1991-06-14
期刊：
影响因子：
64.5
通讯作者：
MEYEROWITZ, EM
中科院分区：
文献类型：
--
作者：
DREWS, GN;BOWMAN, JL;MEYEROWITZ, EM
我们的特点是分布AGAMOUS（AG）RNA在拟南芥早期花发育。在这个同源异型基因的突变导致转换雄蕊花瓣在花轮3和心皮到另一个ag花在花轮4。我们发现，AG RNA存在于雄蕊和心皮原基，但在整个早期野生型花发育的萼片和花瓣原基中检测不到，与突变体表型一致。我们还分析了AG RNA在apetela2（ap2）突变体花中的分布。AP2是一个花同源异型基因，它对第1和第2轮花的萼片和花瓣的正常发育是必需的。在ap2突变体花中，AG RNA存在于所有花轮的器官原基中。这些观察结果表明，拟南芥花同源异型基因的表达模式部分建立这些基因之间的相互作用的监管。
We characterized the distribution of AGAMOUS (AG) RNA during early flower development in Arabidopsis. Mutations in this homeotic gene cause the transformation of stamens to petals in floral whorl 3 and of carpels to another ag flower in floral whorl 4. We found that AG RNA is present in the stamen and carpel primordia but is undetectable in sepal and petal primordia throughout early wild-type flower development, consistent with the mutant phenotype. We also analyzed the distribution of AG RNA in apetela2 (ap2) mutant flowers. AP2 is a floral homeotic gene that is necessary for the normal development of sepals and petals in floral whorls 1 and 2. In ap2 mutant flowers, AG RNA is present in the organ primordia of all floral whorls. These observations show that the expression patterns of the Arabidopsis floral homeotic genes are in part established by regulatory interactions between these genes.