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Ectopic expression of the maize chromosomal HMGB1 protein causes defects in root development of tobacco seedlings.

Abstract：

:Chromatin-associated high mobility group (HMG) proteins of the HMGB family are versatile architectural factors assisting various DNA-dependent processes such as transcription and recombination. Here, transgenic tobacco lines were generated that ectopically express the maize HMGB1 protein, as detected by immunoblot analyses. The shoot morphology of HMGB1 expressing plants does not differ from that of control plants. By contrast, tobacco seedlings expressing HMGB1 are impaired in the growth of the primary root, relative to control plants. The reduced primary root length is correlated with the accumulation of small cells in the cell division zone (but not in the elongation zone) of the roots of transgenic plants. This "short-root" phenotype is specific for HMGB1, as is not observed with HMGB4 expressing plants, and it is transient in that it is restricted to young seedlings (

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Lichota J,Ritt C,Grasser KD

doi

10.1016/j.bbrc.2004.03.193

subject

Has Abstract

pub_date

2004-05-21 00:00:00

pages

317-22

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006291X04007351

journal_volume

318

pub_type

杂志文章

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