scholarly journals ABI4 Mediates Abscisic Acid and Cytokinin Inhibition of Lateral Root Formation by Reducing Polar Auxin Transport in Arabidopsis

2010 ◽  
Vol 22 (11) ◽  
pp. 3560-3573 ◽  
Author(s):  
Doron Shkolnik-Inbar ◽  
Dudy Bar-Zvi
Keyword(s):  
Abscisic Acid ◽  
Lateral Root ◽  
Root Formation ◽  
Auxin Transport ◽  
Polar Auxin Transport ◽  
Lateral Root Formation

scholarly journals Coumarin Interferes with Polar Auxin Transport Altering Microtubule Cortical Array Organization in Arabidopsis thaliana (L.) Heynh. Root Apical Meristem

2021 ◽  
Vol 22 (14) ◽  
pp. 7305
Author(s):  
Leonardo Bruno ◽  
Emanuela Talarico ◽  
Luz Cabeiras-Freijanes ◽  
Maria Letizia Madeo ◽  
Antonella Muto ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Lateral Root ◽  
Apical Meristem ◽  
Root Formation ◽  
Auxin Transport ◽  
Primary Root ◽  
Polar Auxin Transport ◽  
Root Apical Meristem ◽  
Lateral Root Formation ◽  
Cortical Array

Coumarin is a phytotoxic natural compound able to affect plant growth and development. Previous studies have demonstrated that this molecule at low concentrations (100 µM) can reduce primary root growth and stimulate lateral root formation, suggesting an auxin-like activity. In the present study, we evaluated coumarin’s effects (used at lateral root-stimulating concentrations) on the root apical meristem and polar auxin transport to identify its potential mode of action through a confocal microscopy approach. To achieve this goal, we used several Arabidopsis thaliana GFP transgenic lines (for polar auxin transport evaluation), immunolabeling techniques (for imaging cortical microtubules), and GC-MS analysis (for auxin quantification). The results highlighted that coumarin induced cyclin B accumulation, which altered the microtubule cortical array organization and, consequently, the root apical meristem architecture. Such alterations reduced the basipetal transport of auxin to the apical root apical meristem, inducing its accumulation in the maturation zone and stimulating lateral root formation.

scholarly journals The cyclophilin A DIAGEOTROPICA gene affects auxin transport in both root and shoot to control lateral root formation

Development ◽  
2015 ◽  
Vol 142 (4) ◽  
pp. 712-721 ◽  
Author(s):  
M. G. Ivanchenko ◽  
J. Zhu ◽  
B. Wang ◽  
E. Medvecka ◽  
Y. Du ◽  
...  
Keyword(s):  
Lateral Root ◽  
Root Formation ◽  
Auxin Transport ◽  
Cyclophilin A ◽  
Lateral Root Formation

scholarly journals Ethylene regulates lateral root formation and auxin transport inArabidopsis thaliana

2008 ◽  
Vol 55 (2) ◽  
pp. 175-187 ◽  
Author(s):  
Sangeeta Negi ◽  
Maria G. Ivanchenko ◽  
Gloria K. Muday
Keyword(s):  
Lateral Root ◽  
Root Formation ◽  
Auxin Transport ◽  
Lateral Root Formation

scholarly journals The Ectomycorrhizal Fungus Laccaria bicolor Stimulates Lateral Root Formation in Poplar and Arabidopsis through Auxin Transport and Signaling

2009 ◽  
Vol 151 (4) ◽  
pp. 1991-2005 ◽  
Author(s):  
Judith Felten ◽  
Annegret Kohler ◽  
Emmanuelle Morin ◽  
Rishikesh P. Bhalerao ◽  
Klaus Palme ◽  
...  
Keyword(s):  
Lateral Root ◽  
Root Formation ◽  
Auxin Transport ◽  
Ectomycorrhizal Fungus ◽  
Laccaria Bicolor ◽  
Lateral Root Formation

Lateral root formation and nutrients: nitrogen in the spotlight

2021 ◽  
Author(s):  
Pierre-Mathieu Pélissier ◽  
Hans Motte ◽  
Tom Beeckman
Keyword(s):  
Signaling Pathways ◽  
Root System ◽  
Root Development ◽  
Lateral Root ◽  
Molecular Mechanisms ◽  
Root Formation ◽  
Lateral Roots ◽  
Nutrient Use Efficiency ◽  
Lateral Root Formation ◽  
Lateral Root Development

Abstract Lateral roots are important to forage for nutrients due to their ability to increase the uptake area of a root system. Hence, it comes as no surprise that lateral root formation is affected by nutrients or nutrient starvation, and as such contributes to the root system plasticity. Understanding the molecular mechanisms regulating root adaptation dynamics towards nutrient availability is useful to optimize plant nutrient use efficiency. There is at present a profound, though still evolving, knowledge on lateral root pathways. Here, we aimed to review the intersection with nutrient signaling pathways to give an update on the regulation of lateral root development by nutrients, with a particular focus on nitrogen. Remarkably, it is for most nutrients not clear how lateral root formation is controlled. Only for nitrogen, one of the most dominant nutrients in the control of lateral root formation, the crosstalk with multiple key signals determining lateral root development is clearly shown. In this update, we first present a general overview of the current knowledge of how nutrients affect lateral root formation, followed by a deeper discussion on how nitrogen signaling pathways act on different lateral root-mediating mechanisms for which multiple recent studies yield insights.

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