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

Journal of Botany

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

Botany

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