Language:

Short actin-based mechanism for light-directed chloroplast movement in Arabidopsis

Proceedings of the National Academy of Sciences - PNAS, 2009-08, Vol.106 (31), p.13106-13111 [Peer Reviewed Journal]

Copyright National Academy of Sciences Aug 4, 2009 ;ISSN: 0027-8424 ;EISSN: 1091-6490 ;DOI: 10.1073/pnas.0906250106 ;PMID: 19620714

Full text available

Citations Cited by

Actions
1. Add to My Research
2. Remove from My Research
3. E-mail
4. Print
5. Permalink
6. Citation
7. EasyBib
8. EndNote
9. RefWorks
10. Delicious
11. Export RIS
12. Export BibTeX

Title:
Short actin-based mechanism for light-directed chloroplast movement in Arabidopsis
Author: Kadota, Akeo ; Yamada, Noboru ; Suetsugu, Noriyuki ; Hirose, Mana ; Saito, Chieko ; Shoda, Keiko ; Ichikawa, Satoshi ; Kagawa, Takatoshi ; Nakano, Akihiko ; Wada, Masamitsu
Subjects: actin ; Actins ; Actins - physiology ; Arabidopsis ; Arabidopsis - physiology ; Arabidopsis Proteins - physiology ; Biochemistry ; Biological Sciences ; cell biology ; Cell Membrane - chemistry ; Cell membranes ; Cells ; Chlorophyll ; chloroplast movement ; Chloroplast Proteins ; chloroplast relocation ; Chloroplasts ; Chloroplasts - physiology ; Cryptochromes ; Flavoproteins - physiology ; Flowers & plants ; Fluorescence ; Green Fluorescent Proteins ; Irradiation ; Light ; Membranes ; Microbeams ; Microfilament Proteins - physiology ; Microfilaments ; Microtubules - physiology ; Movement ; Organelles ; phototropin ; Plant cells ; plant proteins ; Plants ; Plasma ; Proteins
Is Part Of: Proceedings of the National Academy of Sciences - PNAS, 2009-08, Vol.106 (31), p.13106-13111
Description: Organelle movement is essential for proper function of living cells. In plants, these movements generally depend on actin filaments, but the underlying mechanism is unknown. Here, in Arabidopsis, we identify associations of short actin filaments along the chloroplast periphery on the plasma membrane side associated with chloroplast photorelocation and anchoring to the plasma membrane. We have termed these chloroplast-actin filaments (cp-actin filaments). Cp-actin filaments emerge from the chloroplast edge and exhibit rapid turnover. The presence of cp-actin filaments depends on an actin-binding protein, chloroplast unusual positioning1 (CHUP1), localized on the chloroplast envelope. chup1 mutant lacked cp-actin filaments but showed normal cytoplasmic actin filaments. When irradiated with blue light to induce chloroplast movement, cp-actin filaments relocalize to the leading edge of chloroplasts before and during photorelocation and are regulated by 2 phototropins, phot1 and phot2. Our findings suggest that plants evolved a unique actin-based mechanism for organelle movement.
Publisher: United States: National Academy of Sciences
Language: English
Identifier: ISSN: 0027-8424
EISSN: 1091-6490
DOI: 10.1073/pnas.0906250106
PMID: 19620714
Source: Geneva Foundation Free Medical Journals at publisher websites
MEDLINE
PubMed Central

Back to results list


INSPIRE LIBRARY - TON DUC THANG UNIVERSITY	(84-028) 37 755 057	Feedback
19 Nguyen Huu Tho St. Dist.7, HCM	thuvien@tdtu.edu.vn	Feedback

Short actin-based mechanism for light-directed chloroplast movement in Arabidopsis

Copyright National Academy of Sciences Aug 4, 2009 ;ISSN: 0027-8424 ;EISSN: 1091-6490 ;DOI: 10.1073/pnas.0906250106 ;PMID: 19620714

Searching Remote Databases, Please Wait