scholarly journals 3D analysis of mitosis distribution highlights the longitudinal zonation and diarch symmetry in proliferation activity of the Arabidopsis thaliana root meristem

2017 ◽  
Vol 92 (5) ◽  
pp. 834-845 ◽  
Author(s):  
Viktoriya V. Lavrekha ◽  
Taras Pasternak ◽  
Victor B. Ivanov ◽  
Klaus Palme ◽  
Victoria V. Mironova
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Meristem ◽  
3D Analysis ◽  
Longitudinal Zonation ◽  
Proliferation Activity

scholarly journals PHABULOSA Controls the Quiescent Center-Independent Root Meristem Activities in Arabidopsis thaliana

PLoS Genetics ◽  
2015 ◽  
Vol 11 (3) ◽  
pp. e1004973 ◽  
Author(s):  
Jose Sebastian ◽  
Kook Hui Ryu ◽  
Jing Zhou ◽  
Danuše Tarkowská ◽  
Petr Tarkowski ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Meristem ◽  
Quiescent Center

scholarly journals Mutants of Arabidopsis thaliana Hypersensitive to DNA-Damaging Treatments

Genetics ◽  
1997 ◽  
Vol 146 (1) ◽  
pp. 401-407
Author(s):  
Jean E Masson ◽  
Patrick J King ◽  
Jerzy Paszkowski
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Meristem ◽  
Screening Method ◽  
Shoot Meristem ◽  
Recombinational Repair ◽  
X Rays ◽  
X Ray ◽  
Interstrand Crosslinks ◽  
Sublethal Doses ◽  
Simple Screening

A simple screening method was developed for the isolation of Arabidopsis thaliana mutants hypersensitive to X-ray irradiation. The root meristem was used as the target for irradiation with sublethal doses of X rays, while protection of the shoot meristem by a lead cover allowed the rescue of hypersensitive individuals. We isolated nine independent X-ray-hypersensitive mutants from 7000 M2 seedlings. Analysis of three chosen mutants (xrs4, xrs9 and xrs11) showed that alterations in single recessive alleles are responsible for their phenotypes. The mutations are not allelic but linked and map to chromosome 4, suggesting mutations in novel genes as compared to previously mapped mutant alleles. Importantly, hypersensitivity to X rays was found to correlate with hypersensitivity to the DNA-alkylating agent mitomycin C, which provokes interstrand crosslinks, and/or to methyl methanesulfonate, which is known as a radiomimetic chemical. These novel phenotypes suggest that the mutants described here are altered in the repair of DNA damage, most probably by recombinational repair.

scholarly journals ARF5/MONOPTEROS directly regulates miR390 expression in the Arabidopsis thaliana primary root meristem

Plant Direct ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. e00116 ◽  
Author(s):  
Mouli Ghosh Dastidar ◽  
Andrea Scarpa ◽  
Ira Mägele ◽  
Paola Ruiz-Duarte ◽  
Patrick von Born ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Meristem ◽  
Primary Root

The allelochemical farnesene affects Arabidopsis thaliana root meristem altering auxin distribution

2017 ◽  
Vol 121 ◽  
pp. 14-20 ◽  
Author(s):  
Fabrizio Araniti ◽  
Leonardo Bruno ◽  
Francesco Sunseri ◽  
Marianna Pacenza ◽  
Ivano Forgione ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Meristem ◽  
Auxin Distribution

Mutations affecting the radial organisation of the Arabidopsis root display specific defects throughout the embryonic axis

Development ◽  
1995 ◽  
Vol 121 (1) ◽  
pp. 53-62 ◽  
Author(s):  
B. Scheres ◽  
L. Di Laurenzio ◽  
V. Willemsen ◽  
M. T. Hauser ◽  
K. Janmaat ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Vascular Tissue ◽  
Root Meristem ◽  
Primary Root ◽  
Cell Types ◽  
Embryonic Axis ◽  
Arabidopsis Root ◽  
Radial Pattern ◽  
Secondary Roots ◽  
Mature Root

The primary root of Arabidopsis thaliana has a remarkably uniform cellular organisation. The fixed radial pattern of cell types in the mature root arises from proliferative divisions within the root meristem. The root meristem, in turn, is laid down during embryogenesis. We have analysed six mutations causing alterations in the radial organisation of the root. Embryonic phenotypes resulting from wooden leg, gollum, pinocchio, scarecrow, shortroot and fass mutations are described. While mutations in the fass gene affect morphogenesis of all cells, the five other mutations cause alterations in specific layers. Wooden leg and gollum mutations interfere with the proper organisation of the vascular tissue. Shortroot, scarecrow and pinocchio affect the endodermis and cortex. The layer- specific phenotypes caused by all five mutations are also apparent in the hypocotyl. All these phenotypes originate from defects in the radial organisation of the embryonic axis. Secondary roots, which are formed post-embryonically, also display layer-specific phenotypes.

scholarly journals Redox Changes During the Cell Cycle in the Embryonic Root Meristem of Arabidopsis thaliana

2017 ◽  
Vol 27 (18) ◽  
pp. 1505-1519 ◽  
Author(s):  
Ambra de Simone ◽  
Rachel Hubbard ◽  
Natanael Viñegra de la Torre ◽  
Yazhini Velappan ◽  
Michael Wilson ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Arabidopsis Thaliana ◽  
Root Meristem ◽  
Embryonic Root
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