Temperature-induced response in algal cell surface properties and behaviour: an experimental approach

Microalgae are considered an accurate indicator of ecosystem perturbations induced by global climate change. The present work aims to investigate the alteration of temperature on surface properties and behaviour of three algal species using the complementary surface methods (electrochemical and atom...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied phycology 2022-02, Vol.34 (1), p.243-259
Main Authors: Novosel, N., Mišić Radić, T., Zemla, J., Lekka, M., Čačković, A., Kasum, D., Legović, T., Žutinić, P., Gligora Udovič, M., Ivošević DeNardis, N.
Format: Article
Language:English
Subjects:
Algae
Aquatic environment
Atomic force microscopy
Biofilms
Biomedical and Life Sciences
Cell adhesion
Cell interactions
Cell size
Cell surface
Climate change
Cytology
Cytoskeleton
Ecology
Electrochemistry
Extracellular
Freshwater & Marine Ecology
Global climate
Hydrophobicity
Interfaces
Life Sciences
Microscopy
Perturbation
Physiology
Phytoplankton
Plant Physiology
Plant Sciences
Substrates
Surface properties
Temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Microalgae are considered an accurate indicator of ecosystem perturbations induced by global climate change. The present work aims to investigate the alteration of temperature on surface properties and behaviour of three algal species using the complementary surface methods (electrochemical and atomic force microscopy). The results showed that the temperature-induced response of algae is species-specific due to the structural features of the cell envelope. Wall-less algae experience the largest nanomechanical and chemical change, while algae with silicified walls show the pronounced chemical change in the degree of hydrophobicity. Alterations of surface properties suggest a molecular modification of the algal barrier and cytoskeletal rearrangements due to a change in cell size, while algal morphology reveals no change. The physiological activity of cells showed a different organisation of released extracellular substances in the form of fine fibrillar structures, aggregated particles, and dense networks. Both types of algal responses, physiological activity, and molecular modification of the cell barrier determine the cell adhesion and motility. This study highlights the role of surface properties in cell-substrate and cell–cell interactions, which is important for the understanding of algal behaviour at natural interfaces and the mechanism of algal biofilm and aggregate formation in aquatic systems under the stress. Graphical abstract
ISSN:0921-8971
1573-5176
DOI:10.1007/s10811-021-02591-0