Gene expression in diapausing rotifer eggs in response to divergent environmental predictability regimes

Abstract In unpredictable environments in which reliable cues for predicting environmental variation are lacking, a diversifying bet-hedging strategy for diapause exit is expected to evolve, whereby only a portion of diapausing forms will resume development at the first occurrence of suitable condit...

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Autores principales:	Eva Tarazona, J. Ignacio Lucas-Lledó, María José Carmona, Eduardo M. García-Roger
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/93453e70565a4e3895e0c11d77aa11f2
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spelling	oai:doaj.org-article:93453e70565a4e3895e0c11d77aa11f22021-12-02T15:09:47ZGene expression in diapausing rotifer eggs in response to divergent environmental predictability regimes10.1038/s41598-020-77727-22045-2322https://doaj.org/article/93453e70565a4e3895e0c11d77aa11f22020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-77727-2https://doaj.org/toc/2045-2322Abstract In unpredictable environments in which reliable cues for predicting environmental variation are lacking, a diversifying bet-hedging strategy for diapause exit is expected to evolve, whereby only a portion of diapausing forms will resume development at the first occurrence of suitable conditions. This study focused on diapause termination in the rotifer Brachionus plicatilis s.s., addressing the transcriptional profile of diapausing eggs from environments differing in the level of predictability and the relationship of such profiles with hatching patterns. RNA-Seq analyses revealed significant differences in gene expression between diapausing eggs produced in the laboratory under combinations of two contrasting selective regimes of environmental fluctuation (predictable vs unpredictable) and two different diapause conditions (passing or not passing through forced diapause). The results showed that the selective regime was more important than the diapause condition in driving differences in the transcriptome profile. Most of the differentially expressed genes were upregulated in the predictable regime and mostly associated with molecular functions involved in embryo morphological development and hatching readiness. This was in concordance with observations of earlier, higher, and more synchronous hatching in diapausing eggs produced under the predictable regime.Eva TarazonaJ. Ignacio Lucas-LledóMaría José CarmonaEduardo M. García-RogerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-15 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Eva Tarazona J. Ignacio Lucas-Lledó María José Carmona Eduardo M. García-Roger Gene expression in diapausing rotifer eggs in response to divergent environmental predictability regimes
description	Abstract In unpredictable environments in which reliable cues for predicting environmental variation are lacking, a diversifying bet-hedging strategy for diapause exit is expected to evolve, whereby only a portion of diapausing forms will resume development at the first occurrence of suitable conditions. This study focused on diapause termination in the rotifer Brachionus plicatilis s.s., addressing the transcriptional profile of diapausing eggs from environments differing in the level of predictability and the relationship of such profiles with hatching patterns. RNA-Seq analyses revealed significant differences in gene expression between diapausing eggs produced in the laboratory under combinations of two contrasting selective regimes of environmental fluctuation (predictable vs unpredictable) and two different diapause conditions (passing or not passing through forced diapause). The results showed that the selective regime was more important than the diapause condition in driving differences in the transcriptome profile. Most of the differentially expressed genes were upregulated in the predictable regime and mostly associated with molecular functions involved in embryo morphological development and hatching readiness. This was in concordance with observations of earlier, higher, and more synchronous hatching in diapausing eggs produced under the predictable regime.
format	article
author	Eva Tarazona J. Ignacio Lucas-Lledó María José Carmona Eduardo M. García-Roger
author_facet	Eva Tarazona J. Ignacio Lucas-Lledó María José Carmona Eduardo M. García-Roger
author_sort	Eva Tarazona
title	Gene expression in diapausing rotifer eggs in response to divergent environmental predictability regimes
title_short	Gene expression in diapausing rotifer eggs in response to divergent environmental predictability regimes
title_full	Gene expression in diapausing rotifer eggs in response to divergent environmental predictability regimes
title_fullStr	Gene expression in diapausing rotifer eggs in response to divergent environmental predictability regimes
title_full_unstemmed	Gene expression in diapausing rotifer eggs in response to divergent environmental predictability regimes
title_sort	gene expression in diapausing rotifer eggs in response to divergent environmental predictability regimes
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/93453e70565a4e3895e0c11d77aa11f2
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Gene expression in diapausing rotifer eggs in response to divergent environmental predictability regimes

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