Flowers under pressure: Ins and outs of turgor regulation in development

Lena Beauzamy, Naomi Nakayama*, Arezki Boudaoud

*Corresponding author for this work

Research output: Contribution to journalLiterature reviewpeer-review

Abstract

Turgor pressure is an essential feature of plants; however, whereas its physiological importance is unequivocally recognized, its relevance to development is often reduced to a role in cell elongation.

This review surveys the roles of turgor in development, the molecular mechanisms of turgor regulation and the methods used to measure turgor and related quantities, while also covering the basic concepts associated with water potential and water flow in plants. Three key processes in flower development are then considered more specifically: flower opening, anther dehiscence and pollen tube growth.

Many molecular determinants of turgor and its regulation have been characterized, while a number of methods are now available to quantify water potential, turgor and hydraulic conductivity. Data on flower opening, anther dehiscence and lateral root emergence suggest that turgor needs to be finely tuned during development, both spatially and temporally. It is anticipated that a combination of biological experiments and physical measurements will reinforce the existing data and reveal unexpected roles of turgor in development.

Original languageEnglish
Pages (from-to)1517-1533
Number of pages17
JournalAnnals of Botany
Volume114
Issue number7
DOIs
Publication statusPublished - 6 Oct 2014

Keywords

  • Flower development
  • pollen tube
  • anther dehiscence
  • flower opening
  • water potential
  • osmotic pressure
  • turgor pressure
  • hydraulic conductivity
  • aquaporins
  • plasmodesmata
  • osmoregulation
  • plasma-membrane aquaporins
  • cotton fiber elongation
  • leaf water potentials
  • lily pollen tubes
  • cell-to-cell
  • hydraulic conductance
  • Plant Cells
  • mechanical properties
  • hydrostatic-pressure

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