Investigating the regulatory role of brassinosteroids in gibberellic acid homeostasis

研究油菜素类固醇在赤霉酸稳态中的调节作用

• 批准号: 259610519
• 负责人: Professorin Dr. Brigitte Poppenberger-Sieberer
• 金额: --
• 依托单位: Professur Biotechnologie gartenbaulicher Kulturen
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/259610519?language=en
• 关键词: Investigating; regulatory; role; brassinosteroids; gibberellic

Brassinosteroids (BRs) are plant steroids that regulate cell division, cell differentiation and cellular patterning. The BRs control fundamental biological processes including germination, development in the light and dark, vascular differentiation, flowering, fruit development and senescence. Since another class of plant hormones, the gibberellic acids (GAs), function in highly similar developmental programs and growth processes, a cross talk of BRs and GAs has long been suspected. However, up to date results had suggested that this cross talk is restricted to the signaling level with both pathways contributing factors that interact to modulate transcription of common target genes.This proposal is based on novel findings, which provide first evidence for a central regulatory function of BRs in the control of GA homeostasis in Arabidopsis thaliana. The research is conceived to elucidate the underlying molecular modes, and thereby intends to improve our understanding of principles of growth regulation in plants.

油菜素类固醇(BRs)是一种调节细胞分裂、细胞分化和细胞构型的植物类固醇。BRs控制基本的生物学过程，包括萌发、光和暗发育、维管分化、开花、果实发育和衰老。由于另一类植物激素赤霉酸(GAS)在高度相似的发育程序和生长过程中发挥作用，BRS和GAS之间的相互作用长期以来一直受到怀疑。然而，到目前为止的结果表明，这种串扰仅限于信号水平，这两个途径都是相互作用的因素，调节共同的目标基因的转录。这一建议是基于新的发现，这为BRS在拟南芥GA动态平衡控制中的中央调控功能提供了第一个证据。这项研究旨在阐明潜在的分子模式，从而提高我们对植物生长调控原理的理解。