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Nanosecond electric pulses trigger actin responses in plant cells.

Abstract：

:We have analyzed the cellular effects of nanosecond pulsed electrical fields on plant cells using fluorescently tagged marker lines in the tobacco cell line BY-2 and confocal laser scanning microscopy. We observe a disintegration of the cytoskeleton in the cell cortex, followed by contraction of actin filaments towards the nucleus, and disintegration of the nuclear envelope. These responses are accompanied by irreversible permeabilization of the plasma membrane manifest as uptake of Trypan Blue. By pretreatment with the actin-stabilizing drug phalloidin, the detachment of transvacuolar actin from the cell periphery can be suppressed, and this treatment can also suppress the irreversible perforation of the plasma membrane. We discuss these findings in terms of a model, where nanosecond pulsed electric fields trigger actin responses that are key events in the plant-specific form of programmed cell death.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Berghöfer T,Eing C,Flickinger B,Hohenberger P,Wegner LH,Frey W,Nick P

doi

10.1016/j.bbrc.2009.07.072

subject

Has Abstract

pub_date

2009-09-25 00:00:00

pages

590-5

issue

3

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(09)01422-3

journal_volume

387

pub_type

杂志文章

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