Variation in the transcriptional response of threatened coral larvae to elevated temperatures

Nicholas R. Polato, Naomi S. Altman, Iliana B. Baums

Research output: Contribution to journalReview article

27 Citations (Scopus)

Abstract

Coral populations have declined worldwide largely due to increased sea surface temperatures. Recovery of coral populations depends in part upon larval recruitment. Many corals reproduce during the warmest time of year when further increases in temperature can lead to low fertilization rates of eggs and high larval mortality. Microarray experiments were designed to capture and assess variability in the thermal stress responses of Acropora palmata larvae from Puerto Rico. Transcription profiles showed a striking acceleration of normal developmental gene expression patterns with increased temperature. The transcriptional response to heat suggested rapid depletion of larval energy stores via peroxisomal lipid oxidation and included key enzymes that indicated the activation of the glyoxylate cycle. High temperature also resulted in expression differences in key developmental signalling genes including the conserved WNT pathway that is critical for pattern formation and tissue differentiation in developing embryos. Expression of these and other important developmental and thermal stress genes such as ferritin, heat shock proteins, cytoskeletal components, cell adhesion and autophagy proteins also varied among larvae derived from different parent colonies. Disruption of normal developmental and metabolic processes will have negative impacts on larval survival and dispersal as temperatures rise. However, it appears that variation in larval response to high temperature remains despite the dramatic population declines. Further research is needed to determine whether this variation is heritable or attributable to maternal effects.

Original languageEnglish (US)
Pages (from-to)1366-1382
Number of pages17
JournalMolecular ecology
Volume22
Issue number5
DOIs
StatePublished - Mar 1 2013

Fingerprint

Anthozoa
Larva
corals
coral
larva
Temperature
larvae
Developmental Genes
temperature
maternal effect
protein
gene
heat shock
population decline
adhesion
gene expression
embryo
glyoxylate cycle
sea surface temperature
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Genetics

Cite this

Polato, Nicholas R. ; Altman, Naomi S. ; Baums, Iliana B. / Variation in the transcriptional response of threatened coral larvae to elevated temperatures. In: Molecular ecology. 2013 ; Vol. 22, No. 5. pp. 1366-1382.
@article{e93ad2f1244f409f8139c72cbaa93bf8,
title = "Variation in the transcriptional response of threatened coral larvae to elevated temperatures",
abstract = "Coral populations have declined worldwide largely due to increased sea surface temperatures. Recovery of coral populations depends in part upon larval recruitment. Many corals reproduce during the warmest time of year when further increases in temperature can lead to low fertilization rates of eggs and high larval mortality. Microarray experiments were designed to capture and assess variability in the thermal stress responses of Acropora palmata larvae from Puerto Rico. Transcription profiles showed a striking acceleration of normal developmental gene expression patterns with increased temperature. The transcriptional response to heat suggested rapid depletion of larval energy stores via peroxisomal lipid oxidation and included key enzymes that indicated the activation of the glyoxylate cycle. High temperature also resulted in expression differences in key developmental signalling genes including the conserved WNT pathway that is critical for pattern formation and tissue differentiation in developing embryos. Expression of these and other important developmental and thermal stress genes such as ferritin, heat shock proteins, cytoskeletal components, cell adhesion and autophagy proteins also varied among larvae derived from different parent colonies. Disruption of normal developmental and metabolic processes will have negative impacts on larval survival and dispersal as temperatures rise. However, it appears that variation in larval response to high temperature remains despite the dramatic population declines. Further research is needed to determine whether this variation is heritable or attributable to maternal effects.",
author = "Polato, {Nicholas R.} and Altman, {Naomi S.} and Baums, {Iliana B.}",
year = "2013",
month = "3",
day = "1",
doi = "10.1111/mec.12163",
language = "English (US)",
volume = "22",
pages = "1366--1382",
journal = "Molecular Ecology",
issn = "0962-1083",
publisher = "Wiley-Blackwell",
number = "5",

}

Variation in the transcriptional response of threatened coral larvae to elevated temperatures. / Polato, Nicholas R.; Altman, Naomi S.; Baums, Iliana B.

In: Molecular ecology, Vol. 22, No. 5, 01.03.2013, p. 1366-1382.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Variation in the transcriptional response of threatened coral larvae to elevated temperatures

AU - Polato, Nicholas R.

AU - Altman, Naomi S.

AU - Baums, Iliana B.

PY - 2013/3/1

Y1 - 2013/3/1

N2 - Coral populations have declined worldwide largely due to increased sea surface temperatures. Recovery of coral populations depends in part upon larval recruitment. Many corals reproduce during the warmest time of year when further increases in temperature can lead to low fertilization rates of eggs and high larval mortality. Microarray experiments were designed to capture and assess variability in the thermal stress responses of Acropora palmata larvae from Puerto Rico. Transcription profiles showed a striking acceleration of normal developmental gene expression patterns with increased temperature. The transcriptional response to heat suggested rapid depletion of larval energy stores via peroxisomal lipid oxidation and included key enzymes that indicated the activation of the glyoxylate cycle. High temperature also resulted in expression differences in key developmental signalling genes including the conserved WNT pathway that is critical for pattern formation and tissue differentiation in developing embryos. Expression of these and other important developmental and thermal stress genes such as ferritin, heat shock proteins, cytoskeletal components, cell adhesion and autophagy proteins also varied among larvae derived from different parent colonies. Disruption of normal developmental and metabolic processes will have negative impacts on larval survival and dispersal as temperatures rise. However, it appears that variation in larval response to high temperature remains despite the dramatic population declines. Further research is needed to determine whether this variation is heritable or attributable to maternal effects.

AB - Coral populations have declined worldwide largely due to increased sea surface temperatures. Recovery of coral populations depends in part upon larval recruitment. Many corals reproduce during the warmest time of year when further increases in temperature can lead to low fertilization rates of eggs and high larval mortality. Microarray experiments were designed to capture and assess variability in the thermal stress responses of Acropora palmata larvae from Puerto Rico. Transcription profiles showed a striking acceleration of normal developmental gene expression patterns with increased temperature. The transcriptional response to heat suggested rapid depletion of larval energy stores via peroxisomal lipid oxidation and included key enzymes that indicated the activation of the glyoxylate cycle. High temperature also resulted in expression differences in key developmental signalling genes including the conserved WNT pathway that is critical for pattern formation and tissue differentiation in developing embryos. Expression of these and other important developmental and thermal stress genes such as ferritin, heat shock proteins, cytoskeletal components, cell adhesion and autophagy proteins also varied among larvae derived from different parent colonies. Disruption of normal developmental and metabolic processes will have negative impacts on larval survival and dispersal as temperatures rise. However, it appears that variation in larval response to high temperature remains despite the dramatic population declines. Further research is needed to determine whether this variation is heritable or attributable to maternal effects.

UR - http://www.scopus.com/inward/record.url?scp=84874423696&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84874423696&partnerID=8YFLogxK

U2 - 10.1111/mec.12163

DO - 10.1111/mec.12163

M3 - Review article

C2 - 23331636

AN - SCOPUS:84874423696

VL - 22

SP - 1366

EP - 1382

JO - Molecular Ecology

JF - Molecular Ecology

SN - 0962-1083

IS - 5

ER -