Role of Ascorbate in the Regulation of the Arabidopsis thaliana Root Growth by Phosphate Availability

المؤلفون المشاركون

Tyburski, Jarosław
Skorupa, Monika
Tretyn, Andrzej
Dunajska-Ordak, Kamila

المصدر

Journal of Botany

العدد

المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-11، 11ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2012-01-12

دولة النشر

مصر

عدد الصفحات

11

التخصصات الرئيسية

النبات

الملخص 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.

نمط استشهاد جمعية علماء النفس الأمريكية (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

نمط استشهاد الجمعية الأمريكية للغات الحديثة (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

نمط استشهاد الجمعية الطبية الأمريكية (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

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-482386