NDLI: Possible involvement of protein phosphorylation in the regulation of cytoplasmic organization and streaming in root hair cells as revealed by a protein phosphatase inhibitor, calyculin A

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Possible involvement of protein phosphorylation in the regulation of cytoplasmic organization and streaming in root hair cells as revealed by a protein phosphatase inhibitor, calyculin A

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Possible involvement of protein phosphorylation in the regulation of cytoplasmic organization and streaming in root hair cells as revealed by a protein phosphatase inhibitor, calyculin A

Content Provider	Springer Nature Link
Author	Yokota, E. Hibara, K. Imamichi, N. Shimmen, T.
Copyright Year	2000
Abstract	The effects of a protein phosphatase inhibitor, calyculin A (CA), on cytoplasmic streaming and cytoplasmic organization were examined in root hair cells ofLimnobium stoloniferum. CA at concentrations higher than 50 nM inhibited cytoplasmic streaming and also induced remarkable morphological changes in the cytoplasm. The transvacuolar strands, in which actin filament bundles were oriented parallel to the long axis, disappeared and spherical cytoplasmic bodies emerged in the CA-treated cells. In these spherical bodies, actin filaments were present and the spherical bodies were connected to each other by thin strands of actin filaments. Upon CA removal, transvacuolar strands, in which actin filament bundles were aligned, and cytoplasmic streaming reappeared. A nonselective inhibitor for protein kinases, K-252a, delayed the inhibitory effect of CA on cytoplasmic streaming and suppressed the CA-induced formation of the spherical bodies. From these results, it is suggested that phosphatases sensitive to CA regulate cytoplasmic streaming and are involved in the organization of the cytoplasm in root hair cells.
Starting Page	29
Ending Page	38
Page Count	10
File Format	PDF
ISSN	0033183X
Journal	Protoplasma
Volume Number	211
Issue Number	1-2
e-ISSN	16156102
Language	English
Publisher	Springer-Verlag
Publisher Date	2000-01-01
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cytoplasmic streaming Phosphatases Calyculin A Actin Transvacuolar strands Root hair cells Cell Biology Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Plant Science Medicine

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