Molecular insights into high-altitude adaption and acclimatisation of Aporrectodea caliginosa

Perry, Iain; Hernadi, Szabolcs Balazs; Cunha, Luis; Short, Stephen; Marchbank, Angela; Spurgeon, David J. ORCID: https://orcid.org/0000-0003-3264-8760; Orozco-terWengel, Pablo; Kille, Peter. 2022 Molecular insights into high-altitude adaption and acclimatisation of Aporrectodea caliginosa. Life Science Alliance, 5 (11), e202201513. 12, pp. https://doi.org/10.26508/lsa.202201513

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Abstract/Summary

Here, we explore the high-altitude adaptions and acclimatisation of Aporrectodea caliginosa. Population diversity is assessed through mitochondrial barcoding, identifying closely related populations across the island of Pico (Azores). We present the first megabase N50 assembly size (1.2 Mbp) genome for A. caliginosa. High- and low-altitude populations were exposed experimentally to a range of oxygen and temperature conditions, simulating altitudinal conditions, and the transcriptomic responses explored. SNP densities are assessed to identify signatures of selective pressure and their link to differentially expressed genes. The high-altitude A. caliginosa population had lower differential expression and fewer co-expressed genes between conditions, indicating a more condition-refined epigenetic response. Genes identified as under adaptive pressure through Fst and nucleotide diversity in the high-altitude population clustered around the differentially expressed an upstream environmental response control gene, HMGB1. The high-altitude population of A. caliginosa indicated adaption and acclimatisation to high-altitude conditions and suggested resilience to extreme weather events. This mechanistic understanding could help offer a strategy in further identifying other species capable of maintaining soil fertility in extreme environments.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.26508/lsa.202201513
UKCEH and CEH Sections/Science Areas:	Pollution (Science Area 2017-)
ISSN:	2575-1077
Additional Information. Not used in RCUK Gateway to Research.:	Open Access paper - full text available via Official URL link.
NORA Subject Terms:	Ecology and Environment
Date made live:	01 Sep 2022 15:00 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/533120

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