ABA Transport and Plant Water Stress Responses

Trends Plant Sci. 2018 Jun;23(6):513-522. doi: 10.1016/j.tplants.2018.04.001. Epub 2018 May 3.


To understand the integrative networks of signaling molecules, the sites of their biosynthesis and action must be clarified, particularly for phytohormones such as abscisic acid (ABA). The relationship between the sites of ABA biosynthesis and transport has been discussed extensively in the context of guard cells and stomatal regulation. However, guard cells are not the only site of ABA action. Recent studies have reported multiple sites of ABA biosynthesis and multiple ABA transporters, indicating that ABA transport regulation is not unidirectional but rather forms complex networks. Therefore, it is important to determine how multiple ABA sources coordinately contribute to individual biological processes under various physiological conditions.

Keywords: abscisic acid; guard cell; transporter; water stress.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Abscisic Acid / metabolism*
  • Arabidopsis / physiology*
  • Biological Transport
  • Desiccation*
  • Plant Growth Regulators / metabolism*
  • Stress, Physiological
  • Water / physiology*


  • Plant Growth Regulators
  • Water
  • Abscisic Acid