The effect of patterned structures on the mechanical resistance of microscopic silica scales

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F23%3A10475048" target="_blank" >RIV/00216208:11310/23:10475048 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=tkresTsyaP" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=tkresTsyaP</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5507/fot.2023.007" target="_blank" >10.5507/fot.2023.007</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of patterned structures on the mechanical resistance of microscopic silica scales

Popis výsledku v původním jazyce

Surfaces of microscopic organisms are often adorned with various patterns whose putative functions are largely unexplored. In this study, we tested the hypothesis that the formation of parallel-arranged ribs im-proves the mechanical resistance of microscopic silica scales. Computer models of scales were constructed for chrysophyte species Mallomonas striata and Synura petersenii, varying the ribs number and orientation. The finite element method was used to evaluate the model static parameters. Our results showed a large difference in the function of ribs depending on the species studied. In S. petersenii, the ribs play a key role in scale stability by fixing the longitudinal tubular structure (the median keel) to the basal plate. Although a larger number of ribs increases the scale strength, in extant species the number of ribs is usually optimised to save silicate. In M. stri-ata, on the other hand, ribs have a negligible effect on overall scale stability. Moreover, vertically arranged ribs that most stabilize the scales are very rarely produced in nature. This suggests that these ribs have a function other than improving the mechanical resistance of the scales.

Název v anglickém jazyce

The effect of patterned structures on the mechanical resistance of microscopic silica scales

Popis výsledku anglicky

Surfaces of microscopic organisms are often adorned with various patterns whose putative functions are largely unexplored. In this study, we tested the hypothesis that the formation of parallel-arranged ribs im-proves the mechanical resistance of microscopic silica scales. Computer models of scales were constructed for chrysophyte species Mallomonas striata and Synura petersenii, varying the ribs number and orientation. The finite element method was used to evaluate the model static parameters. Our results showed a large difference in the function of ribs depending on the species studied. In S. petersenii, the ribs play a key role in scale stability by fixing the longitudinal tubular structure (the median keel) to the basal plate. Although a larger number of ribs increases the scale strength, in extant species the number of ribs is usually optimised to save silicate. In M. stri-ata, on the other hand, ribs have a negligible effect on overall scale stability. Moreover, vertically arranged ribs that most stabilize the scales are very rarely produced in nature. This suggests that these ribs have a function other than improving the mechanical resistance of the scales.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10606 - Microbiology

Projekt

<a href="/cs/project/GA20-22346S" target="_blank" >GA20-22346S: Skleněná krása: Výzkum morfologické diverzity křemičitých šupin zlativek</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Fottea

ISSN

1802-5439

e-ISSN

1805-4927

Svazek periodika

23

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

190-200

Kód UT WoS článku

001090273500004

EID výsledku v databázi Scopus

2-s2.0-85176909550