The internal meristem layer (L3) determines floral meristem size and carpel number in tomato periclinal chimeras.
The internal meristem layer (L3) determines floral meristem size and carpel number in tomato periclinal chimeras.
复制标题
内部分生组织层 (L3) 决定番茄周缘嵌合体中的花分生组织大小和心皮数量。
DOI：
10.1105/tpc.4.9.1089
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
Sussex,IM
中科院分区：
文献类型：
--
作者：
Szymkowiak,EJ;Sussex,IM
细胞与细胞之间的相互作用在植物发育过程中非常重要。我们已经产生了平周嵌合体的植物之间的不同，每花的心皮的数量，以确定在确定的心皮开始的数量在花分生组织中占据特定位置的细胞的作用。种内嵌合体之间产生的番茄（番茄）表达的突变fasciated，这会导致每轮花器官的数量增加，和番茄野生型fasciated。番茄与L. peruvianum，不同的心皮数每花。在这两套嵌合体，心皮数以及在心皮起始的花分生组织的大小不确定的基因型细胞在外层两层的分生组织（L1和L2），但由基因型细胞占据内层（L3）的分生组织。我们从这些实验中得出结论，在花器官的启动，在分生组织的某些层的细胞响应的信息提供给他们从分生组织中的其他细胞。
Cell-cell interactions are important during plant development. We have generated periclinal chimeras between plants that differ in the number of carpels per flower to determine the roles of cells occupying specific positions in the floral meristem in determining the number of carpels initiated. Intraspecific chimeras were generated between tomato (Lycopersicon esculentum) expressing the mutation fasciated, which causes an increased number of floral organs per whorl, and tomato wild type for fasciated. Interspecific chimeras were generated between tomato and L. peruvianum, which differ in number of carpels per flower. In both sets of chimeras, carpel number as well as the size of the floral meristem during carpel initiation were not determined by the genotype of cells in the outer two layers of the meristem (L1 and L2) but were determined by the genotype of cells occupying the inner layer (L3) of the meristem. We concluded from these experiments that during floral organ initiation, cells in certain layers of the meristem respond to information supplied to them from other cells in the meristem.