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High-throughput sequencing analyses of two ants: Camponotus floridanus and Harpegnathos saltator

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Harpegnathos saltator Camponotus floridanus

PROVIDER: GSE22680 | GEO | 2010/08/27

SECONDARY ACCESSION(S): PRJNA128331

REPOSITORIES: GEO

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High-throughput sequencing analyses of two ants: Camponotus floridanus and Harpegnathos saltator

Project description:This SuperSeries is composed of the following subset Series: GSE22678: Transcriptome sequencing and analysis of two ants: Camponotus floridanus and Harpegnathos saltator GSE22679: Small RNA sequencing and analysis of two ants: Camponotus floridanus and Harpegnathos saltator Refer to individual Series

2010-08-26 | E-GEOD-22680 | biostudies-arrayexpress

Genomic comparison of the ants Camponotus floridanus and Harpegnathos saltator.

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Transcriptome sequencing and analysis of two ants: Camponotus floridanus and Harpegnathos saltator

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Genome-wide and caste-specific DNA methylomes of the ants Camponotus floridanus and Harpegnathos saltator.

Project description:Ant societies comprise individuals belonging to different castes characterized by specialized morphologies and behaviors. Because ant embryos can follow different developmental trajectories, epigenetic mechanisms must play a role in caste determination. Ants have a full set of DNA methyltransferases and their genomes contain methylcytosine. To determine the relationship between DNA methylation and phenotypic plasticity in ants, we obtained and compared the genome-wide methylomes of different castes and developmental stages of Camponotus floridanus and Harpegnathos saltator.In the ant genomes, methylcytosines are found both in symmetric CG dinucleotides (CpG) and non-CpG contexts and are strongly enriched at exons of active genes. Changes in exonic DNA methylation correlate with alternative splicing events such as exon skipping and alternative splice site selection. Several genes exhibit caste-specific and developmental changes in DNA methylation that are conserved between the two species, including genes involved in reproduction, telomere maintenance, and noncoding RNA metabolism. Several loci are methylated and expressed monoallelically, and in some cases, the choice of methylated allele depends on the caste.These first ant methylomes and their intra- and interspecies comparison reveal an exonic methylation pattern that points to a connection between DNA methylation and splicing. The presence of monoallelic DNA methylation and the methylation of non-CpG sites in all samples suggest roles in genome regulation in these social insects, including the intriguing possibility of parental or caste-specific genomic imprinting.

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