DOI: 10.1073/pnas.2006387117
论文题名: From one cell to many: Morphogenetic field of lateral root founder cells in Arabidopsis thaliana is built by gradual recruitment
作者: Torres-Martínez H.H. ; Hernández-Herrera P. ; Corkidi G. ; Dubrovsky J.G.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期: 34 起始页码: 20943
结束页码: 20949
语种: 英语
英文关键词: Branching
; Clonal analysis
; Meristem
; Morphogenesis
; Plant architecture
Scopus关键词: auxin
; indoleacetic acid derivative
; apical meristem
; Arabidopsis thaliana
; Article
; cell activation
; cell cycle
; cell differentiation
; cell division
; cell labeling
; cell proliferation
; cotyledon
; daughter cell
; lateral root
; nonhuman
; pericyte
; phloem
; plant cell
; priority journal
; protein transport
; root development
; seedling
; stem cell
; vascular bundle (plant)
; Arabidopsis
; drug effect
; gene expression regulation
; genetics
; growth, development and aging
; meristem
; metabolism
; morphogenesis
; physiology
; plant organogenesis
; plant root
; signal transduction
; transport at the cellular level
; Arabidopsis
; Biological Transport
; Cell Differentiation
; Cell Division
; Gene Expression Regulation, Plant
; Indoleacetic Acids
; Meristem
; Morphogenesis
; Organogenesis, Plant
; Phloem
; Plant Roots
; Signal Transduction
英文摘要: The reiterative process of lateral root (LR) formation is widespread and underlies root system formation. However, early LR primordium (LRP) morphogenesis is not fully understood. In this study, we conducted both a clonal analysis and time-lapse experiments to decipher the pattern and sequence of pericycle founder cell (FC) participation in LR formation. Most commonly, LRP initiation starts with the specification of just one FC longitudinally. Clonal and anatomical analyses suggested that a single FC gradually recruits neighboring pericycle cells to become FCs. This conclusion was validated by long-term time-lapse live-imaging experiments. Once the first FC starts to divide, its immediate neighbors, both lengthwise and laterally, are recruited within the hour, after which they recruit their neighboring cells within a few hours. Therefore, LRP initiation is a gradual, multistep process. FC recruitment is auxin-dependent and is abolished by treatment with a polar auxin transport inhibitor. Furthermore, FC recruitment establishes a morphogenetic field where laterally peripheral cells have a lower auxin response, which is associated with a lower proliferation potential, compared to centrally located FCs. The lateral boundaries of the morphogenetic field are determined by phloem-adjacent pericycle cells, which are the last cells to be recruited as FCs. The proliferation potential of these cells is limited, but their recruitment is essential for root system formation, resulting in the formation of a new vascular connection between the nascent and parent root, which is crucial for establishing a continuous and efficient vascular system. © 2020 National Academy of Sciences. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163407
Appears in Collections: 气候变化与战略
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作者单位: Torres-Martínez, H.H., Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, 62250, Mexico; Hernández-Herrera, P., Laboratorio de Análisis de Imágenes y Visión por Computadora, Instituto de Biotecnología, UNAM, Cuernavaca, 62250, Mexico; Corkidi, G., Laboratorio de Análisis de Imágenes y Visión por Computadora, Instituto de Biotecnología, UNAM, Cuernavaca, 62250, Mexico; Dubrovsky, J.G., Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, 62250, Mexico
Recommended Citation:
Torres-Martínez H.H.,Hernández-Herrera P.,Corkidi G.,et al. From one cell to many: Morphogenetic field of lateral root founder cells in Arabidopsis thaliana is built by gradual recruitment[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(34)