title: Ascorbate in the apoplast of elongating plant cells
metadata.name: dc.contributor.author
metadata.value: Sharova, Elena
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Romanova, Aleksandra
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2018-07-09T13:44:55Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2018-07-09T13:44:55Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2018-03
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Sharova, E. and Romanova, A. 2018. Ascorbate in the apoplast of elongating plant cells. Bio. Comm. 63(1): 77–86.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: 10.21638/spbu03.2018.109
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/10379
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: It was shown that basipetal retardation of cell elongation in the growth zone of
  etiolated maize mesocotyls correlates with a steep decrease in the apoplastic
  ascorbic acid (ASC) concentration (50 μM → 10 μM) and ascorbate redox state
  (17% → 5%). Exogenous ASC (0.3 mM) not only inhibits peroxidase-dependent
  oxidation of phenols in vitro. It also exerts a highly specific effect on the secretion
  of peroxidases by stimulating the release of some isoforms while inhibiting
  the release of others to the cell walls. This effect points to the hypothetic signaling
  function of apoplastic ascorbate. Previously, we described a basipetal decrease
  in hydrogen peroxide concentration in the apoplast (from 5.1 to 2.0 μM)
  and a two-times increase in cell wall peroxidase potential activity (Sharova et
  al., 2012). Summarizing found gradients, we can assume that the conditions in
  the apoplast of the upper mesocotyl segment are favorable for the occurrence
  of the Fenton reaction (high ASC and hydrogen peroxide concentrations) and
  unfavorable for the oxidation of phenols (high ASC concentration and low potential
  peroxidase activity), which contributes to cell wall extensibility and rapid
  cell elongation.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Biological Communications;Volume 63; Issue 1
metadata.lang: -
metadata.name: dc.subject
metadata.value: apoplast
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: ascorbate
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: cell wall
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: growth regulation
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: maize seedlings
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: peroxidase
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: secretion
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Ascorbate in the apoplast of elongating plant cells
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 09-Sharova.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/10379/1/09-Sharova.pdf
resources.format: Adobe PDF
resources.size: 521,02 kB