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Transcriptomic variation in a coral reveals pathways of clonal organisation

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dc.contributor Australian Institute Of Marine Science
dc.contributor Danish Tech Univ
dc.contributor Coral Genom Grp
dc.contributor Ctr Biol Sequence Anal
dc.contributor Technical University Of Denmark
dc.contributor James Cook Univ
dc.contributor James Cook University
dc.contributor Dept Syst Biol
dc.contributor Australian Inst Marine Sci
dc.contributor Arc Ctr Excellence Coral Reef Studies
dc.contributor Australian Institute Of Marine Science (aims) en VAN OPPEN, MADELEINE J. H. BAY, LINE K. NIELSEN, H. BJORN JARMER, HANNE SENECA, FRANCOIS 2017-03-21T00:48:51Z 2017-03-21T00:48:51Z 2013-02-28T06:42:02Z 2019-05-09T01:14:44Z 2017-03-21T00:48:51Z 2013-02-28T06:42:02Z 2017-03-21T00:48:51Z 2019-05-09T01:14:44Z 2009-06-01
dc.identifier 8267 en
dc.identifier.citation Bay LK, Nielsen HB, Jarmer H, Seneca F and van Oppen MJH (2009) Transcriptomic variation in a coral reveals pathways of clonal organisation. Marine Genomics. 2: 119-125. en
dc.identifier.issn 1874-7787
dc.description Link to abstract/full text - en
dc.description.abstract A microarray study was undertaken to examine the potential for clonal gene expression variation in a branching reef building coral, Acropora millepora. The role of small-scale gradients in light and water flow was examined by comparing gene expression levels between branch elevation (tip and base) and position (centre and edge) of replicate coral colonies (n=3). Analyses of variance revealed that almost 60% of variation in gene expression was present between colonies and 34 genes were considered differentially expressed between colonies (minimum P=6.5 x 10(-4)). These genes are associated with energy metabolism, protein biosynthesis and cell-cell recognition representing either genotypic variation in gene expression or the effects of specific environmental conditions that affect patterns of energy acquisition, growth and pathogen encounters. Less variation was present between central and peripheral branches (7%) and only a single gene was deemed differentially expressed (P=1.493 x 10(-3)). The function of this gene, a phosphatidylserine decarboxylase, suggests different growth patterns between branch positions within colonies and is consistent with the usual higher growth rates on the perimeter of corymbose-like branching coral colonies such as A. millepora. Four genes were differentially expressed between the tip and base of branches (P=3.239 x 10(-4)) and were associated with lysosome lipase activity and fluorescence, suggesting that branch tips may encounter higher pathogen loads or levels of mechanical stress and require greater levels of photo-protection associated with higher water flow and light levels. This study therefore confirms transcriptomic variation in response to small-scale environmental gradients consistent with differential resource allocation in clonal coral colonies. (C) 2009 Elsevier B.V. All rights reserved.
dc.description.sponsorship We are thankful for the use of the 18K A. millepora microarray developed by the ARC Centre for the Molecular Genetics of Development at ANU. Raechel Littman helped with fieldwork and RNA extractions and Andrew Baird provided useful comments on the manuscript. This research was conducted at the Australian Institute of Marine Science with funding provided by the ARC Centre of Excellence for Coral Reef Studies, the Queensland Government and the Marine and Tropical Science Research Facility.
dc.description.uri en
dc.language English
dc.language en en
dc.relation.ispartof Marine Genomics - pages: 2: 119-125 en
dc.relation.ispartof Null
dc.subject Acropora-millepora
dc.subject Water-flow
dc.subject Reef-building Coral
dc.subject Growth
dc.subject Calcification
dc.subject Gene-expression
dc.subject Montastraea-faveolata
dc.subject Marine & Freshwater Biology
dc.subject Gene Expression
dc.subject Porites-lobata
dc.subject Phenotypic Plasticity
dc.subject Coral
dc.subject Clonal Organisation
dc.subject Environmental Effects
dc.subject Madracis-mirabilis
dc.subject Genetics & Heredity
dc.title Transcriptomic variation in a coral reveals pathways of clonal organisation
dc.type journal article en
dc.identifier.doi 10.1016/j.margen.2009.07.004
dc.identifier.wos WOS:000273739100006

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