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ABSTRACT: Gene expression in the fatbody of macro- and microgyne queens of the ant Temnothorax rugatulus

PROVIDER: PRJNA549424 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR9652950_1.fastq.gz	Fastqsanger.gz
	SRR9652950_2.fastq.gz	Fastqsanger.gz
	SRR9652941_1.fastq.gz	Fastqsanger.gz
	SRR9652941_2.fastq.gz	Fastqsanger.gz
	SRR9652951_1.fastq.gz	Fastqsanger.gz

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How can ant queens live so long? Genes of multiple longevity pathways change expression with age in the ant Temnothorax rugatulus

Project description:Senescence is manifested by an increase in oxidative stress and a decline in biological functions with age. In most organisms, body maintenance is traded-off with reproduction. The negative relationship between longevity and fecundity is also evident on the molecular level, yet the proximate mechanisms remain poorly understood. Apparently by-passing this trade-off, social insect queens are both extremely long-lived (up to 30 years in some ants) and highly fecund compared to workers. Here, we study changes in gene expression with age and fecundity in queens to determine how the trade-off between those two traits is reshaped. We analyse tissue-specific gene expression in young founding queens and old, highly fecund queens of the ant Temnothorax rugatulus. More genes altered their expression with age in the fat body than in the brain. Despite strong differences in ovary development, few fecundity genes were differentially expressed. However, many longevity genes involved in well-known pathways or lifespan-associated biological processes changed their expression with age indicating that multiple longevity mechanisms are activated successively throughout a queens’ life. Young queens invested in immunity (i.e. activation of the Toll signalling pathway) and resistance against environmental and physiological stress associated with the founding phase (i.e. down regulation of the TOR pathway), while established older queens up-regulate anti-aging mechanisms (i.e. up-regulation of catalase, superoxide dismutase, heat shock 70 kDa proteins). Finally, we identified a number of candidate genes and pathways, potentially involved in reshaping the fertility-longevity trade-off in social insects, shedding light on how this is achieved on a proximate level.

2018-03-06 | GSE111415 | GEO

How can ant queens live so long? Genes of multiple longevity pathways change expression with age in the ant Temnothorax rugatulus

Project description:How can ant queens live so long? Genes of multiple longevity pathways change expression with age in the ant Temnothorax rugatulus

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Temnothorax rugatulus

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Comparison of fire ant adult queens with different supergene genotypes (SB/SB and SB/Sb) and different age classes (1-day-old virgins, 11-day-old virgins and reproductive queens) from 2008 and 2009

Project description:In the fire ant Solenopsis invicta, a colony queen number is determined by the founding queen's genotypes at the 13 Mb supergene with the non-recombining variants SB and Sb. Single-queen colonies are always headed by SB/SB queens while multiple-queens colonies are always headed by SB/Sb queens. The two variants of the supergene, SB and Sb are completely linked to the two alleles (B and b) of the gene Gp-9. SB/SB and SB/Sb queens differ in many physiological traits including their maturation rate and odor. To explain why SB/SB and SB/Sb queens have different odors, and why SB/SB virgins mature faster and accumulate more fat, we measured expression of ~6000 genes in virgin queens 1 and 11 days after eclosion and in reproductive queens. Keywords: fire ants, Solenopsis invicta, Supergene, queen, Gp-9, social form, maturation, fat storage, queen odor, cuticular hydrocarbon, worker discrimination, monogyne, polygyne, transposon, chemical signaling

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DNA methylomes of the fire ant Solenopsis invicta.

Project description:We used whole bodies of four different adult fire ant morphs (alate queens, workers, haploid males, and diploid males) from a single polygyne colony to generate single-base resolution DNA methylation maps. DNA was extracted from whole bodies of individual males, individual queens, and pooled workers. Bisulfite conversion and sequencing was performed by Beijing Genomics Institute (Shenzhen, China). Unmethylated enterobacteria phage lambda DNA (GenBank accession: J02459.1) was added to each genomic DNA sample as a control for bisulfite conversion efficiency.

2013-03-27 | E-GEOD-39959 | biostudies-arrayexpress

DNA methylomes of the fire ant Solenopsis invicta.

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Project description:We performed a whole-genome transcriptomic analysis of pleometrotic queens infected by SINV-1, SINV-2 or co-infected with both viruses, to characterize patterns of gene expression associated with viral infection and identify genes responding differentially to the two viruses. We sampled fire ant queens in Gainesville, Florida, immediately after a mating flight. We arranged them in pairs based on having similar weights (range ±0.2 mg) to allow pleometrotic colony founding. We housed paired queens in nesting tubes in claustral conditions (no food or water) for one month. Thereafter, we collected queens in dry ice, we isolated total RNA from whole bodies and used it to quantify SINV-1 and SINV-2 viruses with real-time PCR. We selected 2 queens that were virus-free as controls, 3 SINV-1-infected, 4 SINV-2-infected and 11 co-infected by both viruses. These samples were processed for microarrays analysis.

2016-01-04 | E-MTAB-3581 | biostudies-arrayexpress

Gene expression of metamorphosis in fire ants

Project description:Ants are among the most successful animals on earth, with societies of a complexity that rivals our own. These societies are characterized by reproductive division of labor between female queens that can live several years and lay thousands of eggs per day, workers that live only a few months and are sterile, and males that live only a few weeks and do not participate in colony tasks. These striking differences in lifespan and roles are echoed by extensive morphological and physiological divergence. Using the fire ant, Solenopsis invicta, we conduct the first genome-wide survey of developmental gene expression levels over 20 time-points from larval to adult stages in workers, queens and males

2013-10-20 | GSE24906 | GEO

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