The Genetic Regulation of Phase Change in Maize

该项目的目的是描述遗传控制的特征 从少年到成年的“阶段变化” 玉米营养生长习性 这种试图解剖 时间基因表达程序的遗传调节将 通过分析突变（Tp 1、Tp 2和Tp 3）来完成， 延长幼鱼生长期。 这些功能 突变将通过研究它们的自主性来研究。 表达，以及它们对玉米叶片生长、形态和 细胞谱系 表型和遗传相互作用 原发突变的推定功能丧失衍生物 将被定性为定义的另一种方法， 它们的功能。 这些研究的信息将用于 评估增长转型模式，包括：1）重叠 青少年和成人节目;和2）顺序，相互 专门的青少年和成人节目 这项研究有 提高遗传控制基础知识的潜力 玉米的发育过程及其可能的进化途径。

The objective of this project is to characterize genetic control of the transition, termed "phase change", from juvenile to adult vegetative growth habit in maize. This attempt to dissect genetic regulation of the temporal gene expression program will be accomplished via analysis of mutations (Tp1, Tp2 and Tp3) that prolong the juvenile growth phase. The function of these mutations will be investigated by study of the autonomy of their expression, and their effect on maize leaf growth, morphology and cell lineage. The phenotypes and genetic interactions of putative loss.of.function derivatives of the primary mutations will be characterized as an additional approach to definition of their function. Information from these studies will be used to evaluate growth transition models which involve: 1) overlapping juvenile and adult programs; and 2) sequential, mutually exclusive juvenile and adult programs. This study has the potential to advance fundamental knowledge of the genetic control of maize development, and possible pathways of its evolution.