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Contraction behaviors of Vorticella sp. stalk investigated using high-speed video camera. I: Nucleation and growth model

The contraction process of living Vorticella sp. has been investigated by image processing using a high-speed video camera. In order to express the temporal change in the stalk length resulting from the contraction, a damped spring model and a nucleation and growth model are applied. A double expone...

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Detalles Bibliográficos
Autores principales: Kamiguri, Junko, Tsuchiya, Noriko, Hidema, Ruri, Tachibana, Masatoshi, Yatabe, Zenji, Shoji, Masahiko, Hashimoto, Chihiro, Pansu, Robert Bernard, Ushiki, Hideharu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Biophysical Society of Japan (BSJ) 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5070450/
https://www.ncbi.nlm.nih.gov/pubmed/27857602
http://dx.doi.org/10.2142/biophysics.8.1
Descripción
Sumario:The contraction process of living Vorticella sp. has been investigated by image processing using a high-speed video camera. In order to express the temporal change in the stalk length resulting from the contraction, a damped spring model and a nucleation and growth model are applied. A double exponential is deduced from a conventional damped spring model, while a stretched exponential is newly proposed from a nucleation and growth model. The stretched exponential function is more suitable for the curve fitting and suggests a more particular contraction mechanism in which the contraction of the stalk begins near the cell body and spreads downwards along the stalk. The index value of the stretched exponential is evaluated in the range from 1 to 2 in accordance with the model in which the contraction undergoes through nucleation and growth in a one-dimensional space.