Coral thermal tolerance: tuning gene expression to resist thermal stress.

The acclimatization capacity of corals is a critical consideration in the persistence of coral reefs under stresses imposed by global climate change. The stress history of corals plays a role in subsequent response to heat stress, but the transcriptomic changes associated with these plastic changes...

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Autores principales:	Anthony J Bellantuono, Camila Granados-Cifuentes, David J Miller, Ove Hoegh-Guldberg, Mauricio Rodriguez-Lanetty
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/680934bdc11344ce8c449137f701e8a0
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spelling	oai:doaj.org-article:680934bdc11344ce8c449137f701e8a02021-11-18T08:06:45ZCoral thermal tolerance: tuning gene expression to resist thermal stress.1932-620310.1371/journal.pone.0050685https://doaj.org/article/680934bdc11344ce8c449137f701e8a02012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23226355/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203The acclimatization capacity of corals is a critical consideration in the persistence of coral reefs under stresses imposed by global climate change. The stress history of corals plays a role in subsequent response to heat stress, but the transcriptomic changes associated with these plastic changes have not been previously explored. In order to identify host transcriptomic changes associated with acquired thermal tolerance in the scleractinian coral Acropora millepora, corals preconditioned to a sub-lethal temperature of 3°C below bleaching threshold temperature were compared to both non-preconditioned corals and untreated controls using a cDNA microarray platform. After eight days of hyperthermal challenge, conditions under which non-preconditioned corals bleached and preconditioned corals (thermal-tolerant) maintained Symbiodinium density, a clear differentiation in the transcriptional profiles was revealed among the condition examined. Among these changes, nine differentially expressed genes separated preconditioned corals from non-preconditioned corals, with 42 genes differentially expressed between control and preconditioned treatments, and 70 genes between non-preconditioned corals and controls. Differentially expressed genes included components of an apoptotic signaling cascade, which suggest the inhibition of apoptosis in preconditioned corals. Additionally, lectins and genes involved in response to oxidative stress were also detected. One dominant pattern was the apparent tuning of gene expression observed between preconditioned and non-preconditioned treatments; that is, differences in expression magnitude were more apparent than differences in the identity of genes differentially expressed. Our work revealed a transcriptomic signature underlying the tolerance associated with coral thermal history, and suggests that understanding the molecular mechanisms behind physiological acclimatization would be critical for the modeling of reefs in impending climate change scenarios.Anthony J BellantuonoCamila Granados-CifuentesDavid J MillerOve Hoegh-GuldbergMauricio Rodriguez-LanettyPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 11, p e50685 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anthony J Bellantuono Camila Granados-Cifuentes David J Miller Ove Hoegh-Guldberg Mauricio Rodriguez-Lanetty Coral thermal tolerance: tuning gene expression to resist thermal stress.
description	The acclimatization capacity of corals is a critical consideration in the persistence of coral reefs under stresses imposed by global climate change. The stress history of corals plays a role in subsequent response to heat stress, but the transcriptomic changes associated with these plastic changes have not been previously explored. In order to identify host transcriptomic changes associated with acquired thermal tolerance in the scleractinian coral Acropora millepora, corals preconditioned to a sub-lethal temperature of 3°C below bleaching threshold temperature were compared to both non-preconditioned corals and untreated controls using a cDNA microarray platform. After eight days of hyperthermal challenge, conditions under which non-preconditioned corals bleached and preconditioned corals (thermal-tolerant) maintained Symbiodinium density, a clear differentiation in the transcriptional profiles was revealed among the condition examined. Among these changes, nine differentially expressed genes separated preconditioned corals from non-preconditioned corals, with 42 genes differentially expressed between control and preconditioned treatments, and 70 genes between non-preconditioned corals and controls. Differentially expressed genes included components of an apoptotic signaling cascade, which suggest the inhibition of apoptosis in preconditioned corals. Additionally, lectins and genes involved in response to oxidative stress were also detected. One dominant pattern was the apparent tuning of gene expression observed between preconditioned and non-preconditioned treatments; that is, differences in expression magnitude were more apparent than differences in the identity of genes differentially expressed. Our work revealed a transcriptomic signature underlying the tolerance associated with coral thermal history, and suggests that understanding the molecular mechanisms behind physiological acclimatization would be critical for the modeling of reefs in impending climate change scenarios.
format	article
author	Anthony J Bellantuono Camila Granados-Cifuentes David J Miller Ove Hoegh-Guldberg Mauricio Rodriguez-Lanetty
author_facet	Anthony J Bellantuono Camila Granados-Cifuentes David J Miller Ove Hoegh-Guldberg Mauricio Rodriguez-Lanetty
author_sort	Anthony J Bellantuono
title	Coral thermal tolerance: tuning gene expression to resist thermal stress.
title_short	Coral thermal tolerance: tuning gene expression to resist thermal stress.
title_full	Coral thermal tolerance: tuning gene expression to resist thermal stress.
title_fullStr	Coral thermal tolerance: tuning gene expression to resist thermal stress.
title_full_unstemmed	Coral thermal tolerance: tuning gene expression to resist thermal stress.
title_sort	coral thermal tolerance: tuning gene expression to resist thermal stress.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/680934bdc11344ce8c449137f701e8a0
work_keys_str_mv	AT anthonyjbellantuono coralthermaltolerancetuninggeneexpressiontoresistthermalstress AT camilagranadoscifuentes coralthermaltolerancetuninggeneexpressiontoresistthermalstress AT davidjmiller coralthermaltolerancetuninggeneexpressiontoresistthermalstress AT ovehoeghguldberg coralthermaltolerancetuninggeneexpressiontoresistthermalstress AT mauriciorodriguezlanetty coralthermaltolerancetuninggeneexpressiontoresistthermalstress
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Coral thermal tolerance: tuning gene expression to resist thermal stress.

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