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

Xuewen Li, Maryia Makavitskaya, Veranika Samokhina, Viera Mackievic, Ilya Navaselsky, Palina Hryvusevich, Galina Smolikova, Sergei Medvedev, Sergey Shabala, Min Yu, Vadim Demidchik

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

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 condi-tions, as tested by the confocal microscopy and a combined staining with propidium iodide and fluorescein diacetate.
Original languageEnglish
Article numbere1514895
JournalPlant Signaling and Behavior
Volume13
Issue number9
DOIs
Publication statusPublished - 2018
Externally publishedYes

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