The initiation of lateral roots in the primary roots of maize (Zea mays L.) implies a reactivation of cell proliferation in a group of founder pericycle cells

Copyright © 2016 Elsevier GmbH. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 192(2016) vom: 15. März, Seite 105-10
1. Verfasser: Alarcón, M Victoria (VerfasserIn)
Weitere Verfasser: Lloret, Pedro G, Martín-Partido, Gervasio, Salguero, Julio
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't 5-Bromo-2′-deoxyuridine Founder cell Lateral root initiation Pericycle
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100 1 |a Alarcón, M Victoria  |e verfasserin  |4 aut 
245 1 4 |a The initiation of lateral roots in the primary roots of maize (Zea mays L.) implies a reactivation of cell proliferation in a group of founder pericycle cells 
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520 |a The initiation of lateral roots (LRs) has generally been viewed as a reactivation of proliferative activity in pericycle cells that are committed to initiate primordia. However, it is also possible that pericycle founder cells that initiate LRs never cease proliferative activity but rather are displaced to the most distal root zones while undertaking successive stages of LR initiation. In this study, we tested these two alternative hypotheses by examining the incorporation of 5-bromo-2'-deoxyuridine (BrdU) into the DNA of meristematic root cells of Zea mays. According to the values for the length of the cell cycle and values for cell displacement along the maize root, our results strongly suggest that pericycle cells that initiate LR primordia ceased proliferative activity upon exiting the meristematic zone. This finding is supported by the existence of a root zone between 4 and 20mm from the root cap junction, in which neither mitotic cells nor labelled nuclei were observed in phloem pericycle cells 
650 4 |a Journal Article 
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650 4 |a 5-Bromo-2′-deoxyuridine 
650 4 |a Founder cell 
650 4 |a Lateral root initiation 
650 4 |a Pericycle 
700 1 |a Lloret, Pedro G  |e verfasserin  |4 aut 
700 1 |a Martín-Partido, Gervasio  |e verfasserin  |4 aut 
700 1 |a Salguero, Julio  |e verfasserin  |4 aut 
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