Loading content, please wait..
loading..
Logo
Version 3.24
or
Authors Short, DC; Colmer, TD
Author Full Name Short, DC; Colmer, TD
Title Salt tolerance in the halophyte Halosarcia pergranulata subsp. pergranulata
Source ANNALS OF BOTANY
Language English
Document Type Article
Author Keywords Chenopodiaceae; halophyte; Halosarcia pergranulata; ion regulation; osmotic adjustment; Salicornioideae; salinity; NaCl; succulence
Keywords Plus SUAEDA-MARITIMA; GROWTH; SALINITY; BETAINE; LEAVES; PLANTS
Abstract Halosarcia pergranulata (P. G. Wilson) subsp. pergranulata is a member of the Salicornioideae and is native to Australia. Salt tolerance in H. pergranulata subsp. pergranulata was assessed by growing plants for 83 d at seven NaCl concentrations from 10 to 800 mol m(-3). Shoot biomass was greatest for plants grown at 10 to 200 mol m(-3) NaCl, while at salinities of 300 mol m(-3) or higher it was inhibited. There was little increase in succulence in response to NaCl, and it even declined at the highest salinities. The K+:Na+ molar ratio in succulent shoot tissues decreased from 0.30:1 in plants grown at 10 mol m(-3) NaCl to 0.02: I in plants at 600 mol m(-3), due to a three-fold increase in tissue Na+ concentration and a five-fold decline in tissue K+. The osmotic potential of sap (pi(sap)) in the expanding shoot tissues remained -1.7 to -2.5 MPa below the pi of the root medium. Na+ plus Cl- contributed 56 to 80% of the pi(sap) in plants grown at 10 to 800 mol m(-3) NaCl. These Endings show that H. pergranulata subsp. pergranulata has a high degree of NaCl tolerance, and that studies on solute compartmentation at the cellular level are required to elucidate the mechanisms by which this species tolerates very low tissue K+:Na+ ratios. (C) 1999 Annals of Botany Company.
Author Address Univ Western Australia, Fac Agr, Nedlands, WA 6907, Australia
Reprint Address Colmer, TD (corresponding author), Univ Western Australia, Fac Agr, Nedlands, WA 6907, Australia.
ResearcherID Number Colmer, Timothy/A-9994-2011
ORCID Number Colmer, Timothy/0000-0002-3383-9596
Times Cited 96
Total Times Cited Count (WoS, BCI, and CSCD) 103
Publisher ACADEMIC PRESS LTD
Publisher City LONDON
Publisher Address 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
ISSN 0305-7364
29-Character Source Abbreviation ANN BOT-LONDON
ISO Source Abbreviation Ann. Bot.
Publication Date MAR
Year Published 1999
Volume 83
Issue 3
Beginning Page 207
Ending Page 213
Digital Object Identifier (DOI) 10.1006/anbo.1998.0812
Page Count 7
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number 171TJ
Unique Article Identifier WOS:000078879900002
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, 2020, 2021, 2022. 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, 2020, 2021, 2022. 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