BPS 信号：旁路三重突变体中生长素非依赖机制导致的胚胎阻滞。
The bps signal: embryonic arrest from an auxin-independent mechanism in bypass triple mutants.
机构信息
Department of Biology, University of Utah, Salt Lake City, UT, USA.
出版信息
Plant Signal Behav. 2012 Jun;7(6):698-700. doi: 10.4161/psb.20282. Epub 2012 May 14.
Abstract
Long-distance signaling is essential for coordination of plant development and environmental responses. We originally isolated a tiny mutant named bypass1 (bps1), which has defects in shoot and root development. The bps1 roots overproduce a mobile signal (bps signal) that arrests both root and shoot development. Our recent study demonstrated that all three BPS gene family members prevent ectopic synthesis of the same bps signal.bps multiple mutants show progressively more severe developmental defects. An embryogenesis analysis revealed abnormal cell divisions in all meristem lineages of bps triple mutants. These defects appear to be auxin independent, and arise prior to changes in PLT1 and PLT2 expression.
摘要
长距离信号对于植物发育和环境响应的协调至关重要。我们最初分离到一个名为 bypass1 (bps1) 的微小突变体，该突变体在茎和根发育方面存在缺陷。bps1 根过度产生一种可移动的信号（bps 信号），从而阻止根和茎的发育。我们最近的研究表明，BPS 基因家族的所有三个成员都阻止相同 bps 信号的异位合成。bps 多突变体表现出越来越严重的发育缺陷。胚胎发生分析显示 bps 三突变体的所有分生组织谱系中的细胞分裂异常。这些缺陷似乎与生长素无关，并且在 PLT1 和 PLT2 表达变化之前就出现了。
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