Quiescent center initiation in the Arabidopsis lateral root primordia is dependent on the SCARECROW transcription factor

Tatsuaki Goh, Koichi Toyokura, Darren M. Wells, Kamal Swarup, Mayuko Yamamoto, Tetsuro Mimura, Dolf Weijers, Hidehiro Fukaki, Laurent Laplaze, Malcolm J. Bennett, Soazig Guyomarc’h

研究成果: Article同行評審

52 引文 斯高帕斯(Scopus)

摘要

Lateral root formation is an important determinant of root system architecture. In Arabidopsis, lateral roots originate from pericycle cells, which undergo a program of morphogenesis to generate a new lateral root meristem. Despite its importance for root meristem organization, the onset of quiescent center (QC) formation during lateral root morphogenesis remains unclear. Here, we used live 3D confocal imaging to monitor cell organization and identity acquisition during lateral root development. Our dynamic observations revealed an early morphogenesis phase and a late meristem formation phase as proposed in the bi-phasic growth model. Establishment of lateral root QCs coincided with this developmental phase transition. QC precursor cells originated from the outer layer of stage II lateral root primordia, within which the SCARECROW (SCR) transcription factor was specifically expressed. Disrupting SCR function abolished periclinal divisions in this lateral root primordia cell layer and perturbed the formation of QC precursor cells. We conclude that de novo QC establishment in lateral root primordia operates via SCR-mediated formative cell division and coincides with the developmental phase transition.

原文English
頁(從 - 到)3363-3371
頁數9
期刊Development (Cambridge)
143
發行號18
DOIs
出版狀態Published - 2016 9月 15

All Science Journal Classification (ASJC) codes

  • 分子生物學
  • 發展生物學

指紋

深入研究「Quiescent center initiation in the Arabidopsis lateral root primordia is dependent on the SCARECROW transcription factor」主題。共同形成了獨特的指紋。

引用此