Molecular effects of a variable environment on Sydney rock oysters, Saccostrea glomerata: thermal and low salinity stress, and their synergistic effect

Nicole G Ertl; Wayne A O'Connor; Abigail Elizur

doi:10.1016/j.margen.2018.10.003

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Molecular effects of a variable environment on Sydney rock oysters, Saccostrea glomerata: thermal and low salinity stress, and their synergistic effect

Journal article

Peer reviewed

Molecular effects of a variable environment on Sydney rock oysters, Saccostrea glomerata: thermal and low salinity stress, and their synergistic effect

Nicole G Ertl, Wayne A O'Connor and Abigail Elizur

Marine Genomics, Vol.43, pp.19-32

2019

DOI: https://doi.org/10.1016/j.margen.2018.10.003

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Abstract

mollusc

RNA-Seq

stress

immunity

transporters

Bivalves are frequently exposed to salinity and temperature fluctuations in the estuary. This study explored the molecular effect of these fluctuations by exposing Sydney rock oysters, (Saccostrea glomerata), native to Australia, to either low salinity, elevated temperature or a combined salinity and temperature stress. Following the exposures, RNA-Seq was carried out on the collected oyster tissues. Differential transcript analysis resulted in a total of 1473, 1232 and 2571 transcripts, which were differentially expressed in S. glomerata exposed to low salinity (10 ppt), elevated temperature (30°C) or the combined stressor (15 ppt and 30°C), respectively, when compared to control oysters. All stress treatments had some effect on molecular processes such as innate immune response or respiration, with overall the strongest effects seen in S. glomerata exposed to the combined stressor. Additionally, most transporters putatively involved in osmoregulation were found to be suppressed in response to the combined stressor and the low salinity exposure. This study provides insight into the oyster's responses to both, single and dual stressors commonly found in an estuarine environment.

Details

Title: Molecular effects of a variable environment on Sydney rock oysters, Saccostrea glomerata: thermal and low salinity stress, and their synergistic effect
Authors: Nicole G Ertl (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Wayne A O'Connor (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Abigail Elizur (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Marine Genomics, Vol.43, pp.19-32
Publisher: Elsevier BV
Date published: 2019
DOI: 10.1016/j.margen.2018.10.003
ISSN: 1874-7787
Organisation Unit: School of Health - Biomedicine; University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy; School of Health and Sport Sciences - Legacy; Centre for Bioinnovation; School of Health and Behavioural Sciences - Legacy
Language: English
Record Identifier: 99450779302621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Genetics & Heredity; Marine & Freshwater Biology

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