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Plant Cell Environ

Title:		Flooding induced emissions of volatile signalling compounds in three tree species with differing waterlogging tolerance
Author(s):		Copolovici L; Niinemets U;
Address:		"Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu 51014, Estonia"
Journal Title:		Plant Cell Environ
Year:		2010
Volume:		20100422
Issue:		9
Page Number:		1582 - 1594
DOI:		10.1111/j.1365-3040.2010.02166.x
ISSN/ISBN:		1365-3040 (Electronic) 0140-7791 (Linking)
Abstract:		"To gain insight into variations in waterlogging responsiveness, net assimilation rate, stomatal conductance, emissions of isoprene and marker compounds of anoxic metabolism ethanol and acetaldehyde, and stress marker compounds nitric oxide (NO), volatile products of lipoxygenase (LOX) pathway and methanol were studied in seedlings of temperate deciduous tree species Alnus glutinosa, Populus tremula and Quercus rubra (from highest to lowest waterlogging tolerance) throughout sustained root zone waterlogging of up to three weeks. In all species, waterlogging initially resulted in reductions in net assimilation and stomatal conductance and enhanced emissions of ethanol, acetaldehyde, NO, LOX products and methanol, followed by full or partial recovery depending on process and species. Strong negative correlations between g(s) and internal NO concentration and NO flux, valid within and across species, were observed throughout the experiment. Isoprene emission capacity was not related to waterlogging tolerance. Less waterlogging tolerant species had greater reduction and smaller acclimation capacity in foliage physiological potentials, and larger emission bursts of volatile stress marker compounds. These data collectively provide encouraging evidence that emissions of volatile organics and NO can be used as quantitative measures of stress tolerance and acclimation kinetics in temperate trees"
Keywords:		Alnus/metabolism/physiology Butadienes/metabolism *Floods Hemiterpenes/metabolism Nitric Oxide/metabolism Pentanes/metabolism Plant Stomata/physiology Plant Transpiration Populus/metabolism/physiology Quercus/metabolism/physiology Trees/metabolism/*physio;
Notes:		"MedlineCopolovici, Lucian Niinemets, Ulo eng Research Support, Non-U.S. Gov't 2010/05/07 Plant Cell Environ. 2010 Sep; 33(9):1582-94. doi: 10.1111/j.1365-3040.2010.02166.x. Epub 2010 Apr 22"