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Protoplasma. 2007;230(3-4):165-9. Epub 2007 Apr 24.

Myosin inhibitors block accumulation movement of chloroplasts in Arabidopsis thaliana leaf cells.

Author information

1
Department of Gene Technology, Tallinn University of Technology, Tallinn, Estonia. heiti.paves@ttu.ee

Abstract

Chloroplasts alter their distribution within plant cells depending on the external light conditions. Myosin inhibitors 2,3-butanedione monoxime (BDM), N-ethylmaleimide (NEM), and 1-(5-iodonaphthalene-1-sulfonyl)-1H-hexahydro-1,4-diazepine hydrochloride (ML-7) were used to study the possible role of myosins in chloroplast photorelocation in Arabidopsis thaliana mesophyll cells. None of these agents had an effect on the chloroplast high-fluence-rate avoidance movement but all of the three myosin inhibitors blocked the accumulation movement of chloroplasts after a high-fluence-rate irradiation of the leaves. The results suggest that myosins have a role in A. thaliana chloroplast photorelocation.

PMID:
17458631
DOI:
10.1007/s00709-006-0230-y
[Indexed for MEDLINE]

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