Role of Ascorbate in the Regulation of the Arabidopsis thaliana Root Growth by Phosphate Availability
Joint Authors
Tyburski, Jarosław
Skorupa, Monika
Tretyn, Andrzej
Dunajska-Ordak, Kamila
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-01-12
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Arabidopsis root system responds to phosphorus (P) deficiency by decreasing primary root elongation and developing abundant lateral roots.
Feeding plants with ascorbic acid (ASC) stimulated primary root elongation in seedlings grown under limiting P concentration.
However, at high P, ASC inhibited root growth.
Seedlings of ascorbate-deficient mutant (vtc1) formed short roots irrespective of P availability.
P-starved plants accumulated less ascorbate in primary root tips than those grown under high P.
ASC-treatment stimulated cell divisions in root tips of seedlings grown at low P.
At high P concentrations ASC decreased the number of mitotic cells in the root tips.
The lateral root density in seedlings grown under P deficiency was decreased by ASC treatments.
At high P, this parameter was not affected by ASC-supplementation.
vtc1 mutant exhibited increased lateral root formation on either, P-deficient or P-sufficient medium.
Irrespective of P availability, high ASC concentrations reduced density and growth of root hairs.
These results suggest that ascorbate may participate in the regulation of primary root elongation at different phosphate availability via its effect on mitotic activity in the root tips.
American Psychological Association (APA)
Tyburski, Jarosław& Dunajska-Ordak, Kamila& Skorupa, Monika& Tretyn, Andrzej. 2012. Role of Ascorbate in the Regulation of the Arabidopsis thaliana Root Growth by Phosphate Availability. Journal of Botany،Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-482386
Modern Language Association (MLA)
Tyburski, Jarosław…[et al.]. Role of Ascorbate in the Regulation of the Arabidopsis thaliana Root Growth by Phosphate Availability. Journal of Botany No. 2012 (2012), pp.1-11.
https://search.emarefa.net/detail/BIM-482386
American Medical Association (AMA)
Tyburski, Jarosław& Dunajska-Ordak, Kamila& Skorupa, Monika& Tretyn, Andrzej. Role of Ascorbate in the Regulation of the Arabidopsis thaliana Root Growth by Phosphate Availability. Journal of Botany. 2012. Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-482386
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-482386