« Previous AbstractExposure to volatile organic compounds in the passenger compartment of automobiles during periods of normal and malfunctioning operation    Next Abstract"Heat stress decreases the diversity, abundance and functional potential of coral gas emissions" »

Sci Rep

Title:		Coral endosymbionts (Symbiodiniaceae) emit species-specific volatilomes that shift when exposed to thermal stress
Author(s):		Lawson CA; Possell M; Seymour JR; Raina JB; Suggett DJ;
Address:		"Climate Change Cluster (C3), University of Technology Sydney, Sydney, Australia. caitlin.alinya@gmail.com. School of Life and Environmental Sciences, University of Sydney, Sydney, Australia. Climate Change Cluster (C3), University of Technology Sydney, Sydney, Australia"
Journal Title:		Sci Rep
Year:		2019
Volume:		20191122
Issue:		1
Page Number:		17395 -
DOI:		10.1038/s41598-019-53552-0
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"Biogenic volatile organic compounds (BVOCs) influence organism fitness by promoting stress resistance and regulating trophic interactions. Studies examining BVOC emissions have predominantly focussed on terrestrial ecosystems and atmospheric chemistry - surprisingly, highly productive marine ecosystems remain largely overlooked. Here we examined the volatilome (total BVOCs) of the microalgal endosymbionts of reef invertebrates, Symbiodiniaceae. We used GC-MS to characterise five species (Symbiodinium linucheae, Breviolum psygmophilum, Durusdinium trenchii, Effrenium voratum, Fugacium kawagutii) under steady-state growth. A diverse range of 32 BVOCs were detected (from 12 in D. trenchii to 27 in S. linucheae) with halogenated hydrocarbons, alkanes and esters the most common chemical functional groups. A thermal stress experiment on thermally-sensitive Cladocopium goreaui and thermally-tolerant D. trenchii significantly affected the volatilomes of both species. More BVOCs were detected in D. trenchii following thermal stress (32 degrees C), while fewer BVOCs were recorded in stressed C. goreaui. The onset of stress caused dramatic increases of dimethyl-disulfide (98.52%) in C. goreaui and nonanoic acid (99.85%) in D. trenchii. This first volatilome analysis of Symbiodiniaceae reveals that both species-specificity and environmental factors govern the composition of BVOC emissions among the Symbiodiniaceae, which potentially have, as yet unexplored, physiological and ecological importance in shaping coral reef community functioning"
Keywords:		"Adaptation, Biological/physiology Animals Anthozoa/metabolism/*parasitology Coral Reefs Dinoflagellida/*metabolism Ecosystem Gas Chromatography-Mass Spectrometry Heat-Shock Response/*physiology Hot Temperature Species Specificity Symbiosis/*physiology Vol;"
Notes:		"MedlineLawson, Caitlin A Possell, Malcolm Seymour, Justin R Raina, Jean-Baptiste Suggett, David J eng Research Support, Non-U.S. Gov't England 2019/11/24 Sci Rep. 2019 Nov 22; 9(1):17395. doi: 10.1038/s41598-019-53552-0"