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Title: Mitochondrial movement during its association with chloroplasts in Arabidopsis thaliana
Authors: Oikawa, Kazusato
Imai, Takuto
Thagun, Chonprakun
Toyooka, Kiminori
Yoshizumi, Takeshi
Ishikawa, Kazuya
Kodama, Yutaka
Numata, Keiji  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-2199-7420 (unconfirmed)
Author's alias: 及川, 和聡
今井, 拓人
豊岡, 公徳
吉積, 毅
石川, 一也
児玉, 豊
沼田, 圭司
Keywords: Fluorescence imaging
Plant sciences
Issue Date: 5-Mar-2021
Publisher: Springer Nature
Journal title: Communications Biology
Volume: 4
Thesis number: 292
Abstract: Plant mitochondria move dynamically inside cells and this movement is classified into two types: directional movement, in which mitochondria travel long distances, and wiggling, in which mitochondria travel short distances. However, the underlying mechanisms and roles of both types of mitochondrial movement, especially wiggling, remain to be determined. Here, we used confocal laser-scanning microscopy to quantitatively characterize mitochondrial movement (rate and trajectory) in Arabidopsis thaliana mesophyll cells. Directional movement leading to long-distance migration occurred at high speed with a low angle-change rate, whereas wiggling leading to short-distance migration occurred at low speed with a high angle-change rate. The mean square displacement (MSD) analysis could separate these two movements. Directional movement was dependent on filamentous actin (F-actin), whereas mitochondrial wiggling was not, but slightly influenced by F-actin. In mesophyll cells, mitochondria could migrate by wiggling, and most of these mitochondria associated with chloroplasts. Thus, mitochondria migrate via F-actin-independent wiggling under the influence of F-actin during their association with chloroplasts in Arabidopsis.
Description: 葉緑体との相互作用におけるミトコンドリア運動を発見 --相互作用の制御による効率的な物質代謝の可能性に期待--. 京都大学プレスリリース. 2021-03-19.
Rights: © The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
URI: http://hdl.handle.net/2433/262142
DOI(Published Version): 10.1038/s42003-021-01833-8
PubMed ID: 33674706
Related Link: https://www.kyoto-u.ac.jp/ja/research-news/2021-03-19a
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