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Lateral Root Primordium Morphogenesis in Angiosperms

Morphogenetic processes are the basis of new organ formation. Lateral roots (LRs) are the building blocks of the root system. After LR initiation and before LR emergence, a new lateral root primordium (LRP) forms. During this period, the organization and functionality of the prospective LR is define...

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Autores principales: Torres-Martínez, Héctor H., Rodríguez-Alonso, Gustavo, Shishkova, Svetlana, Dubrovsky, Joseph G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6433717/
https://www.ncbi.nlm.nih.gov/pubmed/30941149
http://dx.doi.org/10.3389/fpls.2019.00206
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author Torres-Martínez, Héctor H.
Rodríguez-Alonso, Gustavo
Shishkova, Svetlana
Dubrovsky, Joseph G.
author_facet Torres-Martínez, Héctor H.
Rodríguez-Alonso, Gustavo
Shishkova, Svetlana
Dubrovsky, Joseph G.
author_sort Torres-Martínez, Héctor H.
collection PubMed
description Morphogenetic processes are the basis of new organ formation. Lateral roots (LRs) are the building blocks of the root system. After LR initiation and before LR emergence, a new lateral root primordium (LRP) forms. During this period, the organization and functionality of the prospective LR is defined. Thus, proper LRP morphogenesis is a decisive process during root system formation. Most current studies on LRP morphogenesis have been performed in the model species Arabidopsis thaliana; little is known about this process in other angiosperms. To understand LRP morphogenesis from a wider perspective, we review both contemporary and earlier studies. The latter are largely forgotten, and we attempted to integrate them into present-day research. In particular, we consider in detail the participation of parent root tissue in LRP formation, cell proliferation and timing during LRP morphogenesis, and the hormonal and genetic regulation of LRP morphogenesis. Cell type identity acquisition and new stem cell establishement during LRP morphogenesis are also considered. Within each of these facets, unanswered or poorly understood questions are identified to help define future research in the field. Finally, we discuss emerging research avenues and new technologies that could be used to answer the remaining questions in studies of LRP morphogenesis.
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spelling pubmed-64337172019-04-02 Lateral Root Primordium Morphogenesis in Angiosperms Torres-Martínez, Héctor H. Rodríguez-Alonso, Gustavo Shishkova, Svetlana Dubrovsky, Joseph G. Front Plant Sci Plant Science Morphogenetic processes are the basis of new organ formation. Lateral roots (LRs) are the building blocks of the root system. After LR initiation and before LR emergence, a new lateral root primordium (LRP) forms. During this period, the organization and functionality of the prospective LR is defined. Thus, proper LRP morphogenesis is a decisive process during root system formation. Most current studies on LRP morphogenesis have been performed in the model species Arabidopsis thaliana; little is known about this process in other angiosperms. To understand LRP morphogenesis from a wider perspective, we review both contemporary and earlier studies. The latter are largely forgotten, and we attempted to integrate them into present-day research. In particular, we consider in detail the participation of parent root tissue in LRP formation, cell proliferation and timing during LRP morphogenesis, and the hormonal and genetic regulation of LRP morphogenesis. Cell type identity acquisition and new stem cell establishement during LRP morphogenesis are also considered. Within each of these facets, unanswered or poorly understood questions are identified to help define future research in the field. Finally, we discuss emerging research avenues and new technologies that could be used to answer the remaining questions in studies of LRP morphogenesis. Frontiers Media S.A. 2019-03-19 /pmc/articles/PMC6433717/ /pubmed/30941149 http://dx.doi.org/10.3389/fpls.2019.00206 Text en Copyright © 2019 Torres-Martínez, Rodríguez-Alonso, Shishkova and Dubrovsky. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Torres-Martínez, Héctor H.
Rodríguez-Alonso, Gustavo
Shishkova, Svetlana
Dubrovsky, Joseph G.
Lateral Root Primordium Morphogenesis in Angiosperms
title Lateral Root Primordium Morphogenesis in Angiosperms
title_full Lateral Root Primordium Morphogenesis in Angiosperms
title_fullStr Lateral Root Primordium Morphogenesis in Angiosperms
title_full_unstemmed Lateral Root Primordium Morphogenesis in Angiosperms
title_short Lateral Root Primordium Morphogenesis in Angiosperms
title_sort lateral root primordium morphogenesis in angiosperms
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6433717/
https://www.ncbi.nlm.nih.gov/pubmed/30941149
http://dx.doi.org/10.3389/fpls.2019.00206
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