PMID- 34796901 OWN - NLM STAT- MEDLINE DCOM- 20220221 LR - 20220221 IS - 1477-9145 (Electronic) IS - 0022-0949 (Linking) VI - 224 IP - 24 DP - 2021 Dec 15 TI - Seasonal cellular stress phenomena and phenotypic plasticity in land snail Helix lucorum populations from different altitudes. LID - jeb243298 [pii] LID - 10.1242/jeb.243298 [doi] AB - Temperature, a major abiotic environmental factor, regulates various physiological functions in land snails and therefore determines their biogeographical distribution. Thus, species with different distributions may present different thermal tolerance limits. Additionally, the intense reactivation of snail metabolic rate upon arousal from hibernation or estivation may provoke stress. Land snails, Helix lucorum, display a wide altitudinal distribution resulting in populations being exposed to different seasonal temperature variations. The aim of the present study was to investigate the expression of heat shock proteins (Hsps), mitogen activated protein kinases (MAPKs) and proteins that are related to apoptosis (Bcl-2, ubiquitin), that have 'cytoprotective' roles and are also considered to be reliable indicators of stress because of their crucial role in maintaining cellular homeostasis. These proteins were assessed in H. lucorum individuals from two different populations, one at Axios (sea level, 0 m) and the other at Kokkinopilos (Olympus, 1250 m), as well as after mutual population exchanges, in order to find out whether the different responses of these stress-related proteins depend solely on the environmental temperature. The results showed seasonally altered levels in all studied proteins in the hepatopancreas and foot of snails, both among different populations and between the same populations exposed to varying altitudes. However, individuals of the same population in their native habitat or acclimatized to a different habitat showed a relatively similar pattern of expression, supporting the induction of the specific proteins according to the life history of each species. CI - (c) 2021. Published by The Company of Biologists Ltd. FAU - Staikou, Alexandra AU - Staikou A AD - Laboratory of Zoology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece. FAU - Feidantsis, Konstantinos AU - Feidantsis K AD - Laboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece. FAU - Gkanatsiou, Ourania AU - Gkanatsiou O AD - Laboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece. FAU - Bibos, Modestos Nakos AU - Bibos MN AD - Laboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece. FAU - Hatziioannou, Marianthi AU - Hatziioannou M AD - Department of Ichthyology and Aquatic Environment, Faculty of Agricultural Sciences, University of Thessaly, Fytoko street, GR-38445 Volos, Greece. FAU - Storey, Kenneth B AU - Storey KB AD - Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON, Canada, K1S 5B6. FAU - Michaelidis, Basile AU - Michaelidis B AUID- ORCID: 0000-0002-2312-6883 AD - Laboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece. LA - eng PT - Journal Article DEP - 20211214 PL - England TA - J Exp Biol JT - The Journal of experimental biology JID - 0243705 SB - IM MH - *Adaptation, Physiological MH - *Altitude MH - Animals MH - Estivation MH - Helix, Snails/physiology MH - Humans MH - Seasons OTO - NOTNLM OT - Oxidative stress OT - Species distribution OT - Temperature variation OT - Tissue-specific response OT - Vertical distribution COIS- Competing interests The authors declare no competing or financial interests. EDAT- 2021/11/20 06:00 MHDA- 2022/02/22 06:00 CRDT- 2021/11/19 08:46 PHST- 2021/08/04 00:00 [received] PHST- 2021/11/15 00:00 [accepted] PHST- 2021/11/20 06:00 [pubmed] PHST- 2022/02/22 06:00 [medline] PHST- 2021/11/19 08:46 [entrez] AID - 273728 [pii] AID - 10.1242/jeb.243298 [doi] PST - ppublish SO - J Exp Biol. 2021 Dec 15;224(24):jeb243298. doi: 10.1242/jeb.243298. Epub 2021 Dec 14.