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Review ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Plant Sci. | doi: 10.3389/fpls.2019.01384

Regulation of the central carbon metabolism in apple fruit exposed to postharvest low-oxygen stress

  • 1KU Leuven, Belgium
  • 2Flanders Centre of Postharvest Technology, Vlaams Centrum voor Bewaring van Tuinbouwproducten, Belgium

After harvest, fruit remain metabolically active and continue to ripen. The main goal of postharvest storage is to slow down the metabolic activity. In many cases, this is accomplished by storing fruit at low temperature in combination with low oxygen (O2) and high carbon dioxide (CO2) partial pressures. However, altering the normal atmospheric conditions is not without any risk and can induce low-oxygen stress. This review, therefore, focusses on the central carbon metabolism of fruit, both under normal oxygen conditions and under low-oxygen stress conditions. First, the general context of postharvest fruit storage will be introduced. After reviewing the central carbon metabolism and the impact of low-oxygen stress on it, recent literature on oxygen sensing will be discussed. While many of the elements presented will be applicable to other fruit as well, the current review is focused on apple fruit.

Keywords: low-oxygen stress, Postharvest storage, apple fruit, Central carbon metabolism, Oxygen sensing

Received: 15 May 2019; Accepted: 07 Oct 2019.

Copyright: © 2019 Boeckx, Pols, HERTOG and Nicolai. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Dr. Maarten L. HERTOG, KU Leuven, Leuven, 3000, Belgium, maarten.hertog@kuleuven.be