Role of Root Hydraulics in Plant Drought Tolerance

Soheyla Mohammadi Alagoz, Noreen Zahra, Monireh Hajiaghaei Kamrani, Behnam Asgari Lajayer, Khatereh Nobaharan, Tess Astatkie, Kadambot H.M. Siddique, Muhammad Farooq*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

Frequent and intense drought episodes impact agricultural productivity by challenging plant water status. The maintenance of hydraulic conductivity plays a key role in deciphering stress-induced impacts. Understanding drought-induced changes to root anatomical traits is important to improve plant drought adaptation. However, little is known about the root hydraulic strategy and xylem transport phenomena at the cellular and structural levels. Moreover, root architectural adaptations that systematically govern hydraulic safety as a function of water availability are largely unknown. A comprehensive understanding of root hydraulics and root architecture is needed to identify strategies to improve water uptake and modulate crucial root traits for crop improvement, especially in drought-prone areas. This review highlights the function of roots and the root–shoot junction as a hydraulic safety valve to quickly transport water in the radial and axial direction at cellular and tissue levels under drought stress.

Original languageEnglish
JournalJournal of Plant Growth Regulation
DOIs
Publication statusAccepted/In press - 2022

Keywords

  • Architectural adaptations
  • Drought stress
  • Hydraulic conductance
  • Root hydraulic strategy

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

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