Gene expression response under thermal stress in two Hawaiian corals is dominated by ploidy and genotype.

Autor: Chille EE; Department of Biochemistry and Microbiology Rutgers University New Brunswick New Jersey USA., Stephens TG; Department of Biochemistry and Microbiology Rutgers University New Brunswick New Jersey USA., Misri D; Department of Genetics Rutgers University New Brunswick New Jersey USA., Strand EL; Department of Biological Sciences University of Rhode Island Kingston Rhode Island USA.; Gloucester Marine Genomics Institute Gloucester Massachusetts USA., Putnam HM; Department of Biological Sciences University of Rhode Island Kingston Rhode Island USA., Bhattacharya D; Department of Biochemistry and Microbiology Rutgers University New Brunswick New Jersey USA.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2024 Jul 24; Vol. 14 (7), pp. e70037. Date of Electronic Publication: 2024 Jul 24 (Print Publication: 2024).
DOI: 10.1002/ece3.70037
Abstrakt: Transcriptome data are frequently used to investigate coral bleaching; however, the factors controlling gene expression in natural populations of these species are poorly understood. We studied two corals, Montipora capitata and Pocillopora acuta , that inhabit the sheltered Kāne'ohe Bay, Hawai'i. M. capitata colonies in the bay are outbreeding diploids, whereas P. acuta is a mixture of clonal diploids and triploids. Populations were sampled from six reefs and subjected to either control (no stress), thermal stress, pH stress, or combined pH and thermal stress treatments. RNA-seq data were generated to test two competing hypotheses: (1) gene expression is largely independent of genotype, reflecting a shared treatment-driven response (TDE) or, (2) genotype dominates gene expression, regardless of treatment (GDE). Our results strongly support the GDE model, even under severe stress. We suggest that post-transcriptional processes (e.g., control of translation, protein turnover) modify the signal from the transcriptome, and may underlie the observed differences in coral bleaching sensitivity via the downstream proteome and metabolome.
Competing Interests: The authors declare no conflicts of interest.
(© 2024 The Author(s). Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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