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Title: Helicoid Morphology of Arthrospira platensis NIES-39 Confers Temperature Compensation in the Longitudinal Movement Velocity of Its Trichomes
Authors: Shiraishi, Hideaki  kyouindb  KAKEN_id  orcid (unconfirmed)
Sasase, Mari
Nakashima, Ayano Sakaida
Author's alias: 白石, 英秋
笹瀬, 茉莉
中島, 彩野
Keywords: Arthrospira platensis
cell movement
gliding motility
temperature compensation
Issue Date: Mar-2024
Publisher: MDPI AG
Journal title: Phycology
Volume: 4
Issue: 1
Start page: 104
End page: 116
Abstract: The velocity of the gliding movement of filamentous cyanobacteria on a solid surface usually has a strong temperature dependency, and the higher the temperature, the faster the speed. Former studies on this phenomenon were conducted using filamentous cyanobacteria with straight morphology. We examined the velocity of the gliding movement of Arthrospira platensis NIES-39 along its longitudinal axis to see if the same was true for this cyanobacterium with helicoid trichomes. Experimental results showed little temperature dependency in the velocity in a wide temperature range in this cyanobacterium. However, when we examined the velocity using mutants with straight trichomes, their velocity was strongly affected by temperature, like other formerly analyzed filamentous cyanobacteria. This result indicates that the helicoid morphology of A. platensis trichomes confers temperature compensation to their migration velocity, enabling them to keep a relatively constant velocity under various temperatures. Migration of wild-type trichomes is considerably suppressed compared to the straight-trichome mutants on solid media. The temperature compensation in the locomotion of this organism appears to be established as part of such a suppression. It was also found that the velocity of this cyanobacterium depended on the trichome length when they were atypically short (<250 µm); the shorter the trichomes, the slower the gliding movement tended to be. This result indicates that the coordinated action of a high number of cells constituting the trichome is required for efficient gliding movement.
Rights: © 2024 by the authors. Licensee MDPI, Basel, Switzerland.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
DOI(Published Version): 10.3390/phycology4010006
Appears in Collections:Journal Articles

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