Regional heterogeneity impacts gene expression in the subarctic zooplankter Neocalanus flemingeri in the northern Gulf of Alaska.

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2019
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Abstract
Marine pelagic species are being increasingly challenged by environmental change. Their ability to persist will depend on their capacity for physiological acclimatization. Little is known about limits of physiological plasticity in key species at the base of the food web. Here we investigate the capacity for acclimatization in the copepod Neocalanus flemingeri, which inhabits the Gulf of Alaska, a heterogeneous and highly seasonal environment. RNA-Seq analysis of field-collected pre-adults identified large regional differences in expression of genes involved in metabolic and developmental processes and response to stressors. We found that lipid synthesis genes were up-regulated in individuals from Prince William Sound and down-regulated in the Gulf of Alaska. Up-regulation of lipid catabolic genes in offshore individuals suggests they are experiencing nutritional deficits. The expression differences demonstrate physiological plasticity in response to a steep gradient in food availability. Our transcriptional analysis reveals mechanisms of acclimatization that likely contribute to the observed resilience of this population.
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roncalli2019regionalcommunications Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Roncalli, Vittoria;Cieslak, Matthew C;Germano, Martina;Hopcroft, Russell R;Lenz, Petra H;
Journal Communications biology
Year 2019
DOI
10.1038/s42003-019-0565-5
URL
Keywords
ros mapk plant immunity calcium influx bak1 cerk1 cell surface receptors fungal cell wall glycan ligand

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