Biochemical and genetic analysis of a control mechanism for shoot branching

通过筛选激活标签文库，我们分离到一个拟南芥突变体，板栗，它具有严重的丛生表型，由腋外分生组织的形成。与Col-0野生型相比，栗子的转录因子基因的表达增加了10-30倍。板栗中的突变导致PR 1基因的上调，这是植物防御反应所必需的。这一结果表明，植物的防御反应和腋生分生组织的形成可能有一些共同的因素。

By screening an activation tagging library, we isolated an Arabidopsis mutant,chestnut, which has a severe bushy phenotype resulting from the formation ofextra-axillary meristems. Compared to the Col-0 wild type, chestnut showed a 10-30-fold increase in the expression of a transcription factor gene than. The mutation in chestnut leads to the upregulation of PR1 genes, which are required for plant defense responses. This result suggests that the defense responses of plants and the formation of axillary meristems might share some common factors.