A Molecular framework for the differential responses of primary and lateral roots to auxin in Arabidopsis thaliana

2014 ◽  
Vol 57 (5) ◽  
pp. 274-281 ◽  
Author(s):  
Eun Kyung Yoon ◽  
Ju-Won Kim ◽  
Ji Hyun Yang ◽  
Soo-Hwan Kim ◽  
Jun Lim ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Lateral Roots ◽  
Differential Responses ◽  
Primary And Lateral Roots ◽  
Molecular Framework

scholarly journals Azorhizobium caulinodans ORS571 Colonizes the Xylem of Arabidopsis thaliana

2001 ◽  
Vol 14 (1) ◽  
pp. 93-97 ◽  
Author(s):  
Philip J. Stone ◽  
Kenneth J. O'Callaghan ◽  
Michael R. Davey ◽  
Edward C. Cocking
Keyword(s):  
Arabidopsis Thaliana ◽  
Lateral Roots ◽  
Microscopic Analysis ◽  
Azorhizobium Caulinodans ◽  
Nodulation Factors ◽  
Significant Difference ◽  
The Mean ◽  
Primary And Lateral Roots ◽  
Azorhizobium Caulinodans Ors571 ◽  
Intact Roots

Improved conditions were used for the aseptic growth of Arabidopsis thaliana to investigate whether xylem colonization of A. thaliana by Azorhizobium caulinodans ORS571 might occur. When seedlings were inoculated with ORS571 (pXLGD4) tagged with the lacZ reporter gene, nearly all of the plants showed blue regions of ORS571 colonization at lateral root cracks (LRC). The flavonoids naringenin and liquiritigenin significantly stimulated colonization of LRC by ORS571. Blue bands of ORS571 (pXLGD4) bacteria were observed histochemically in the xylem of intact roots of inoculated plants. Detailed microscopic analysis of sections of primary and lateral roots from inoculated A. thaliana confirmed xylem colonization. Xylem colonization also occurred with an ORS571 nodC mutant deficient in nodulation factors. There was no significant difference in the percentage of plants with xylem colonization or in the mean length of xylem colonized per plant between plants inoculated with either ORS571 (pXLGD4) or ORS571::nodC (pXLGD4), with or without naringenin.

Utilization of a hydrate cellulose film for investigation of Arabidopsis thaliana L. root system growth and development

2020 ◽  
Vol 36 (1) ◽  
pp. 36-43
Author(s):  
I.O. Konovalova ◽  
T.N. Kudelina ◽  
S.O. Smolyanina ◽  
A.I. Lilienberg ◽  
T.N. Bibikova
Keyword(s):  
Arabidopsis Thaliana ◽  
Root System ◽  
Life Support ◽  
Higher Plants ◽  
Plant Root ◽  
Lateral Roots ◽  
Basic Research ◽  
Cellulose Film ◽  
A New Technique ◽  
Basic Research Project

A new technique for Arabidopsis thaliana cultivation has been proposed that combines the use of a phytogel-based nutrient medium and a hydrophilic membrane of hydrate cellulose film, separating the root system of the plant from the medium thickness. Growth rates of both main and lateral roots were faster in the plants cultivated on the surface of hydrate cellulose film than in the plants grown in the phytogel volume. The location of the root system on the surface of the transparent hydrate film simplifies its observation and analysis and facilitates plant transplantation with preservation of the root system configuration. The proposed technique allowed us to first assess the effect of exogenous auxin on the growth of lateral roots at the 5-6 developmental stage. methods to study plant root systems, hydrate cellulose film, A. thaliana, lateral roots, differential root growth rate, auxin The work was financially supported by the Russian Foundation for Basic Research (Project Bel_mol_a 19-54-04015) and the basic topic of the Russian Academy of Sciences - IBMP RAS «Regularities of the Influence of Extreme Environmental Factors on the Processes of Cultivation of Higher Plants and the Development of Japanese Quail Tissues at Different Stages of its Ontogenesis under the Conditions of Regenerative Life Support Systems».

scholarly journals Drought Rhizogenesis in Arabidopsis thaliana (Differential Responses of Hormonal Mutants)

1994 ◽  
Vol 104 (2) ◽  
pp. 761-767 ◽  
Author(s):  
N. Vartanian ◽  
L. Marcotte ◽  
J. Giraudat
Keyword(s):  
Arabidopsis Thaliana ◽  
Hormonal Mutants ◽  
Differential Responses

scholarly journals Spatiotemporal Pattern of Ectopic Cell Divisions Contribute to Mis-Shaped Phenotype of Primary and Lateral Roots of katanin1 Mutant

2020 ◽  
Vol 11 ◽  
Author(s):  
Miroslav Ovečka ◽  
Ivan Luptovčiak ◽  
George Komis ◽  
Olga Šamajová ◽  
Despina Samakovli ◽  
...  
Keyword(s):  
Lateral Roots ◽  
Spatiotemporal Pattern ◽  
Cell Divisions ◽  
Primary And Lateral Roots

Effect of organic pollutant treatment on the growth of pea and maize seedlings

2012 ◽  
Vol 7 (1) ◽  
pp. 159-166 ◽  
Author(s):  
Marie Kummerová ◽  
Štěpán Zezulka ◽  
Lucie Váňová ◽  
Helena Fišerová
Keyword(s):  
Zea Mays ◽  
Seed Germination ◽  
Lateral Roots ◽  
Organic Pollutant ◽  
Primary Root ◽  
Dry Weight ◽  
Considerable Effect ◽  
Maize Seedlings ◽  
Polycyclic Aromatic ◽  
Primary And Lateral Roots

AbstractThis study confirmed the considerable effect of polycyclic aromatic hydrocarbon fluoranthene (FLT; 0.01, 0.1, 1, 4 and 7 mg/l) exposure on the germination of seeds, growth and root morphology of seedlings in Zea mays and Pisum sativum. Seed germination was significantly inhibited at FLT≥0.01 mg/l in maize and at ≥1 mg/l in pea. The amount of released ethylene after 3 days of germination was significantly increased in both species at FLT≥0.1 mg/l. After 7 days of seedling cultivation a significant decrease in the dry weight of roots and shoots occurred in maize at FLT≥0.1 mg/l while in pea similar effect was observed at ≥1 mg/l. The total length of primary and lateral roots was significantly reduced by FLT≥1 mg/l in maize and by 4 and 7 mg/l in pea. The length of the non-branched part of the primary root was significantly reduced by FLT≥0.1 mg/l in maize and ≥0.01 mg/l in pea. In both species the number of lateral roots was significantly increased at FLT≤1 mg/l and inhibited at concentrations of 4 and 7 mg/l. Fluoranthene content in roots and shoots of both species positively correlated with the FLT treatment.

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