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The migration direction of hair cell nuclei is closely related to the perinuclear actin filaments in Arabidopsis.

Abstract：

:Nuclear migration in Arabidopsis root hairs is bidirectional and relies on actin filaments. However, how actin filaments regulate the bidirectional movement of nuclei remains unclear. Here, we discovered that nuclei migrate forward and backward according to the developmental stage of the hair cells. In addition, the migration direction of nuclei was not constant but reversed occasionally, accompanied by nuclear shape changes. Confocal microscopic analysis revealed that perinuclear actin bundles were closely related to the migration and shape of hair cell nuclei. Pharmacological studies showed that SMIFH2, an inhibitor of the actin nucleator-formin, inhibited nuclear backward migration probably by impairing the perinuclear actin filaments. These data indicate that nuclear migration in hair cells is likely motivated by the competition of mechanical forces acting on the nucleus. Furthermore, the perinuclear actin filaments are closely related to the migration direction of hair cell nuclei.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Zhang S,Liu J,Xue X,Tan K,Wang C,Su H

doi

10.1016/j.bbrc.2019.09.047

subject

Has Abstract

pub_date

2019-11-19 00:00:00

pages

783-789

issue

4

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(19)31768-1

journal_volume

519

pub_type

杂志文章

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