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Divergent evolutionary histories of DNA markers in a Hawaiian population of the coral Montipora capitata.


ABSTRACT: We investigated intra- and inter-colony sequence variation in a population of the dominant Hawaiian coral Montipora capitata by analyzing marker gene and genomic data. Ribosomal ITS1 regions showed evidence of a reticulate history among the colonies, suggesting incomplete rDNA repeat homogenization. Analysis of the mitochondrial genome identified a major (M. capitata) and a minor (M. flabellata) haplotype in single polyp-derived sperm bundle DNA with some colonies containing 2-3 different mtDNA haplotypes. In contrast, Pax-C and newly identified single-copy nuclear genes showed either no sequence differences or minor variations in SNP frequencies segregating among the colonies. Our data suggest past mitochondrial introgression in M. capitata, whereas nuclear single-copy loci show limited variation, highlighting the divergent evolutionary histories of these coral DNA markers.

SUBMITTER: Putnam HM 

PROVIDER: S-EPMC5438590 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Divergent evolutionary histories of DNA markers in a Hawaiian population of the coral <i>Montipora capitata</i>.

Putnam Hollie M HM   Adams Diane K DK   Zelzion Ehud E   Wagner Nicole E NE   Qiu Huan H   Mass Tali T   Falkowski Paul G PG   Gates Ruth D RD   Bhattacharya Debashish D  

PeerJ 20170518


We investigated intra- and inter-colony sequence variation in a population of the dominant Hawaiian coral <i>Montipora capitata</i> by analyzing marker gene and genomic data. Ribosomal ITS1 regions showed evidence of a reticulate history among the colonies, suggesting incomplete rDNA repeat homogenization. Analysis of the mitochondrial genome identified a major (<i>M. capitata</i>) and a minor (<i>M. flabellata</i>) haplotype in single polyp-derived sperm bundle DNA with some colonies containing  ...[more]

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