Waterlogging tolerance on a New Zealand saltmarsh

Brownstein, Gretchen, Wilson, J. Bastow and Burritt, David J. (2013) Waterlogging tolerance on a New Zealand saltmarsh. Journal of Experimental Marine Biology and Ecology, 446 202-208. doi:10.1016/j.jembe.2013.05.025


Author Brownstein, Gretchen
Wilson, J. Bastow
Burritt, David J.
Title Waterlogging tolerance on a New Zealand saltmarsh
Journal name Journal of Experimental Marine Biology and Ecology   Check publisher's open access policy
ISSN 0022-0981
Publication date 2013-08
Sub-type Article (original research)
DOI 10.1016/j.jembe.2013.05.025
Volume 446
Start page 202
End page 208
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2014
Language eng
Subject 1104 Complementary and Alternative Medicine
1105 Dentistry
Formatted abstract
The importance of waterlogging in saltmarshes, and especially its role in small-scale patterning, are little known. A physiological/chorological approach was taken to investigate this in a New Zealand salt meadow. The effect of waterlogging on the activities of enzymes associated with anaerobic metabolism, especially alcohol dehydrogenase (ADH), was investigated in a greenhouse experiment with five representative salt meadow species: Puccinellia stricta, Isolepis cernua, Samolus repens, Selliera radicans and Triglochin striata. All species showed a significant increase in ADH activity in either shoots or roots in response to waterlogging. In P. stricta, sucrose synthase and four out of the five enzymes involved in fermentation increased under waterlogging. However, the photosynthetic efficiency (Fv/Fm) of the species did not change under this regime. The species composition gradient on the saltmarsh was related primarily to elevation, a proxy for water inundation, and the distribution of species along that gradient was related to their tolerance of waterlogging as measured by stimulation of ADH activity. However, the species-composition gradient was also related to water-ponding depressions, demonstrating the role of microtopography, with depression mimicking higher elevations, probably due to rainwater ponding.
Keyword Enzymes
Plant ecology
Salinity
Saltmarsh
Tolerance
Waterlogging
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Mined Land Rehabilitation Publications
Official 2014 Collection
Sustainable Minerals Institute Publications
 
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Created: Tue, 12 Nov 2013, 08:18:06 EST by Gretchen Brownstein on behalf of Sustainable Minerals Institute