OsAUX1 controls lateral root initiation in rice (Oryza sativa L.)

2015 ◽  
Vol 38 (11) ◽  
pp. 2208-2222 ◽  
Author(s):  
Heming Zhao ◽  
Tengfei Ma ◽  
Xin Wang ◽  
Yingtian Deng ◽  
Haoli Ma ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Lateral Root ◽  
Oryza Sativa L ◽  
Root Initiation ◽  
Lateral Root Initiation

Isolation and characterization of a short lateral root mutant in rice (Oryza sativa L.)

Plant Science ◽  
2003 ◽  
Vol 165 (4) ◽  
pp. 895-903 ◽  
Author(s):  
Bakul Rani Debi ◽  
Junko Mushika ◽  
Shin Taketa ◽  
Akio Miyao ◽  
Hirohiko Hirochika ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Lateral Root ◽  
Oryza Sativa L ◽  
Isolation And Characterization

Formation of lateral root meristems is a two-stage process

Development ◽  
1995 ◽  
Vol 121 (10) ◽  
pp. 3303-3310 ◽  
Author(s):  
M.J. Laskowski ◽  
M.E. Williams ◽  
H.C. Nusbaum ◽  
I.M. Sussex
Keyword(s):  
Lateral Root ◽  
Lateral Roots ◽  
Initial Period ◽  
Subsequent Stage ◽  
Root Initiation ◽  
Root Meristems ◽  
Lateral Root Initiation ◽  
Cell Layers ◽  
Stage Process ◽  
Pericycle Cells

In both radish and Arabidopsis, lateral root initiation involves a series of rapid divisions in pericycle cells located on the xylem radius of the root. In Arabidopsis, the number of pericycle cells that divide to form a primordium was estimated to be about 11. To determine the stage at which primordia are able to function as root meristems, primordia of different stages were excised and cultured without added hormones. Under these conditions, primordia that consist of 2 cell layers fail to develop while primordia that consist of at least 3–5 cell layers develop as lateral roots. We hypothesize that meristem formation is a two-step process involving an initial period during which a population of rapidly dividing, approximately isodiametric cells that constitutes the primordium is formed, and a subsequent stage during which meristem organization takes place within the primordium.

scholarly journals Interacting Glutamate Receptor-Like Proteins in Phloem Regulate Lateral Root Initiation in Arabidopsis

2013 ◽  
Vol 25 (4) ◽  
pp. 1304-1313 ◽  
Author(s):  
Eric D. Vincill ◽  
Arielle E. Clarin ◽  
Jennifer N. Molenda ◽  
Edgar P. Spalding
Keyword(s):  
Glutamate Receptor ◽  
Lateral Root ◽  
Root Initiation ◽  
Lateral Root Initiation

scholarly journals Auxin minimum defines a developmental window for lateral root initiation

2011 ◽  
Vol 191 (4) ◽  
pp. 970-983 ◽  
Author(s):  
Joseph G. Dubrovsky ◽  
Selene Napsucialy-Mendivil ◽  
Jérme Duclercq ◽  
Yan Cheng ◽  
Svetlana Shishkova ◽  
...  
Keyword(s):  
Lateral Root ◽  
Root Initiation ◽  
Lateral Root Initiation ◽  
Developmental Window

scholarly journals AT-HOOK MOTIF NUCLEAR LOCALISED PROTEIN 18 as a Novel Modulator of Root System Architecture

2020 ◽  
Author(s):  
Marek Šírl ◽  
Tereza Šnajdrová ◽  
Dolores Gutiérrez-Alanís ◽  
Joseph G. Dubrovsky ◽  
Jean Phillipe Vielle-Calzada ◽  
...  
Keyword(s):  
Root System ◽  
System Architecture ◽  
Lateral Root ◽  
Apical Meristem ◽  
Lateral Roots ◽  
Primary Root ◽  
Root System Architecture ◽  
Root Apical Meristem ◽  
Root Initiation ◽  
Lateral Root Initiation

The AT-HOOK MOTIF NUCLEAR LOCALIZED PROTEIN (AHL) gene family encodes embryophyte-specific nuclear proteins with DNA binding activity. They modulate gene expression and affect various developmental processes in plants. We identify AHL18 (At3G60870) as a developmental modulator of root system architecture and growth. AHL18 regulates the length of the proliferation domain and number of dividing cells in the root apical meristem and thereby, cell production. Both primary root growth and lateral root development respond according to AHL18 transcription level. The ahl18 knock-out plants show reduced root systems due to a shorter primary root and a lower number of lateral roots. This change results from a higher number of arrested and non-developing lateral root primordia (LRP) rather than from decreased initiation. Overexpression of AHL18 results in a more extensive root system, longer primary roots, and increased density of lateral root initiation events. Formation of lateral roots is affected during the initiation of LRP and later development. AHL18 regulate root apical meristem activity, lateral root initiation and emergence, which is in accord with localization of its expression.

scholarly journals The lateral root initiation index: an integrative measure of primordium formation

2009 ◽  
Vol 103 (5) ◽  
pp. 807-817 ◽  
Author(s):  
J. G. Dubrovsky ◽  
A. Soukup ◽  
S. Napsucialy-Mendivil ◽  
Z. Jeknić ◽  
M. G. Ivanchenko
Keyword(s):  
Lateral Root ◽  
Root Initiation ◽  
Lateral Root Initiation
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