Involvement of CUP-SHAPED COTYLEDON genes in gynoecium and ovule development in Arabidopsis thaliana
Involvement of CUP-SHAPED COTYLEDON genes in gynoecium and ovule development in Arabidopsis thaliana
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DOI：
10.1093/pcp/41.1.60
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发表时间：
2000-01-01
影响因子：
4.9
通讯作者：
Tasaka, M
中科院分区：
文献类型：
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作者：
Ishida, T;Aida, M;Tasaka, M
当杯形子叶1（CUC1）和CUC2的突变结合在一起时，严重的缺陷涉及萼片和雄蕊的融合发生在拟南芥花中。此外，雌蕊的隔膜不会沿子房的长度沿着融合，许多胚珠的生长受到抑制。CUC2在雌蕊发育过程中在隔原基顶端表达，在胚珠发育过程中在珠心与合点的交界处表达。这些表达模式与突变雌蕊群的表型部分一致。CUC2 mRNA也显示在营养和生殖阶段的分生组织和器官原基之间的边界处表达。这种表达模式表明，CUC2通常涉及在芽和花分生组织的器官分离。
When mutations in CUP-SHAPED COTYLEDON1 (CUC1) and CUC2 are combined, severe defects involving fusion of sepals and of stamens occur in Arabidopsis flowers. In addition, septa of gynoecia do not fuse along the length of the ovaries and many ovules have their growth arrested. CUC2 is expressed at the tips of septal primordia during gynoecium development and at the boundary between nucellus and chalaza during ovule development. These expression patterns are partially consistent with the phenotype of the mutant gynoecium. CUC2 mRNA is also shown to be expressed at the boundaries between meristems and organ primordia during both the vegetative and reproductive phases. This expression pattern indicates that CUC2 is generally involved in organ separation in shoot and floral meristems.