The DOI matches its Crossref record; 57 of the 57 references it cites were found in a registry or an index.
Contribution of trans regulatory eQTL to cryptic genetic variation in C. elegans
Open accessAbstract
BACKGROUND: Cryptic genetic variation (CGV) is the hidden genetic variation that can be unlocked by perturbing normal conditions. CGV can drive the emergence of novel complex phenotypes through changes in gene expression. Although our theoretical understanding of CGV has thoroughly increased over the past decade, insight into polymorphic gene expression regulation underlying CGV is scarce. Here we investigated the transcriptional architecture of CGV in response to rapid temperature changes in the nematode Caenorhabditis elegans. We analyzed regulatory variation in gene expression (and mapped eQTL) across the course of a heat stress and recovery response in a recombinant inbred population. RESULTS: We measured gene expression over three temperature treatments: i) control, ii) heat stress, and iii) recovery from heat stress. Compared to control, exposure to heat stress affected the transcription of 3305 genes, whereas 942 were affected in recovering animals. These affected genes were mainly involved in metabolism and reproduction. The gene expression pattern in recovering animals resembled both the control and the heat-stress treatment. We mapped eQTL using the genetic variation of the recombinant inbred population and detected 2626 genes with an eQTL in the heat-stress treatment, 1797 in the control, and 1880 in the recovery. The cis-eQTL were highly shared across treatments. A considerable fraction of the trans-eQTL (40-57%) mapped to 19 treatment specific trans-bands. In contrast to cis-eQTL, trans-eQTL were highly environment specific and thus cryptic. Approximately 67% of the trans-eQTL were only induced in a single treatment, with heat-stress showing the most unique trans-eQTL. CONCLUSIONS: These results illustrate the highly dynamic pattern of CGV across three different environmental conditions that can be evoked by a stress response over a relatively short time-span (2 h) and that CGV is mainly determined by response related trans regulatory eQTL.
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Metadata
- Authors
- Snoek, B. L., Sterken, M. G., Bevers, R. P. J., Volkers, R. J. M., van’t Hof, A., Brenchley, R., Riksen, J. A. G., Cossins, A., & Kammenga, J. E.
- Venue
- BMC Genomics
- Published
- 2017-06-29
- Volume
- 18
- Issue
- 1
- Pages
- 500-500
- ISSN
- 1471-2164 (ISSN-L)
- OpenAlex
- W2949448083
- Cited by
- 422
- References
- 57
- FWCI
- 14.73
- Type
- journal article
- Language
- en
- Open access
- gold
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