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Effects of exogenously-applied L-ascorbic acid on root expansive growth and viability of the border-like cells

journal contribution
posted on 2023-05-19, 23:42 authored by Li, X, Makavitskaya, M, Samokhina, V, Mackievic, V, Navaselsky, I, Hryvusevich, P, Smolikova, G, Medvedev, S, Sergey ShabalaSergey Shabala, Yu, M, Demidchik, V
Functions of exogenous L-ascorbic acid in plant roots are poorly understood. Recent study by Makavitskaya et al. (doi.org/10.1093/jxb/ery056) has demonstrated that exogenous ascorbate can be released from roots in response to salt stress, and can trigger elevation in the cytosolic free Ca2+. Here, we report that exogenous ascorbate significantly modifies root elongation in Arabidopsis thaliana. Using a medium exchange technique, we have shown that 10-100 µM ascorbate induces small but significant increase in root elongation while higher levels cause its dramatic decrease. Root border cells of Pisum sativum have been losing viability twice faster in the presence of ascorbate that under control conditions, as tested by the confocal microscopy and a combined staining with propidium iodide and fluorescein diacetate.

History

Publication title

Plant Signaling & Behavior

Volume

13

Issue

9

Pagination

e1514895

ISSN

1559-2316

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Taylor & Francis Inc

Place of publication

United States

Rights statement

Copyright 2018 Taylor & Francis Group, LLC

Repository Status

  • Restricted

Socio-economic Objectives

Field grown vegetable crops

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