Summary.
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.
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Abbreviations
- BDM:
-
2,3-butanedione monoxime
- ML-7:
-
1-(5-iodonaphthalene-1-sulfonyl)-1H-hexahydro-1,4-diazepine hydrochloride
- NEM:
-
N-ethylmaleimide
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Correspondence and reprints: Department of Gene Technology, Tallinn, University of Technology, Akadeemia tee 15, 19086 Tallinn, Estonia.
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Paves, H., Truve, E. Myosin inhibitors block accumulation movement of chloroplasts in Arabidopsis thaliana leaf cells. Protoplasma 230, 165–169 (2007). https://doi.org/10.1007/s00709-006-0230-y
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DOI: https://doi.org/10.1007/s00709-006-0230-y