BZR-ARF-PIF模块转录调控植物伸长生长的分子机制的研究进展

Research Progress in the Molecular Mechanism of BZR-ARF-PIF Module in Transcription Regulating Plant Elongation Growth

伸长生长是植物趋利避害进而适应多种逆境的重要方式。因此,研究伸长生长的分子机制将加深人们对植物抗逆机理的理解。耐芸苔素唑因子(Brassinazole Resistants,BZRs)、生长素应答因子(Auxin Response Factors,ARFs)和光敏色素相互作用因子(Phytochrome Interacting Factors,PIFs)都是促进植物伸长生长的关键转录因子。它们最初在不同的信号转导通路中被发现并研究,进一步的研究发现这三类转录因子组成了一个转录模块,即BZR-ARF-PIF(BAP)模块,并相互依赖地促进植物的伸长生长。BAP模块将从前被分散研究的多条调控伸长生长的信号通路整合到了一个转录模型中,从而进一步深化了对植物伸长生长的认识,本文以这一研究历程为线索介绍BAP模块发挥功能的分子机制。

Elongation growth is an important way for plants to adapt to various kinds of adversity. Therefore,researches on the molecular mechanism of elongation growth will deepen the understanding for plant resistance mechanism. Brassinazole Resistants(BZRs), Auxin Response Factors(ARFs) and Phytochrome Interacting Factors(PIFs)are all key transcription factors that promote plant elongation and growth. They were first discovered and researched in different signal transduction pathways. Subsequent studies found that these three transcription factors constitute a transcription module, namely the BZR-ARF-PIF(BAP) module, and interdependently promote plant hypocotyl elongation. In this paper, we reviewed the molecular mechanism of BAP module regulating plant elongation and growth.The BAP module integrates several previously dispersed signaling pathways that regulate elongation into a transcription machine, thus further deepening the understanding of plant elongation growth. This paper will take this research process as a clue to introduce the molecular mechanism of BAP module’s function.