Loading content, please wait..
loading..
Logo
Version 3.18
or
Publication Type J
Authors Reef, R. and C. E. Lovelock
Title Regulation of water balance in mangroves
Source Annals of Botany
Author Keywords Mangrove salinity tolerance water uptake hydraulic anatomy salt secretion aquaporins halophyte water use efficiency WUE Avicennia Rhizophora vapour pressure deficit DWARF RHIZOPHORA-MANGLE VAPOR-PRESSURE DEFICIT AVICENNIA-MARINA GAS-EXCHANGE HYDRAULIC ARCHITECTURE PLANT AQUAPORINS FOLIAR UPTAKE XYLEM SAP PHYSIOLOGICAL-RESPONSES LAGUNCULARIA-RACEMOSA
Abstract Background Mangroves are a group of highly salt-tolerant woody plants. The high water use efficiency of mangroves under saline conditions suggests that regulation of water transport is a crucial component of their salinity tolerance. Scope This review focuses on the processes that contribute to the ability of mangroves to maintain water uptake and limit water loss to the soil and the atmosphere under saline conditions, from micro to macro scales. These processes include: (1) efficient filtering of the incoming water to exclude salt; (2) maintenance of internal osmotic potentials lower than that of the rhizosphere; (3) water-saving properties; and (4) efficient exploitation of less-saline water sources when these become available. Conclusions Mangroves are inherently plastic and can change their structure at the root, leaf and stand levels in response to salinity in order to exclude salt from the xylem stream, maintain leaf hydraulic conductance, avoid cavitation and regulate water loss (e.g. suberization of roots and alterations of leaf size, succulence and angle, hydraulic anatomy and biomass partitioning). However, much is still unknown about the regulation of water uptake in mangroves, such as how they sense and respond to heterogeneity in root zone salinity, the extent to which they utilize non-stomatally derived CO2 as a water-saving measure and whether they can exploit atmospheric water sources.
Author Address [Reef, Ruth; Lovelock, Catherine E.] Univ Queensland, Sch Biol Sci, St Lucia, Qld 4072, Australia. Reef, R (reprint author), Univ Queensland, Sch Biol Sci, St Lucia, Qld 4072, Australia. r.reef@uq.edu.au
ISSN 0305-7364
ISBN 0305-7364
29-Character Source Abbreviation Ann. Bot.
Publication Date Feb
Year Published 2015
Volume 115
Issue 3
Beginning Page 385-395
Digital Object Identifier (DOI) 10.1093/aob/mcu174
Unique Article Identifier WOS:000349560400006
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed