The Arabidopsis TFIID factor AtTAF6 controls pollen tube growth.

Abstract:

:Initiation of transcription mediated by RNA polymerase II requires a number of transcription factors among which TFIID is the major core promoter recognition factor. TFIID is composed of highly conserved factors which include the TATA-binding protein (TBP) and about 14 TBP-associated factors (TAFs). Recently, the complete Arabidopsis TAF family has been identified. To obtain functional information about Arabidopsis TAFs, we analyzed a T-DNA insertion mutant for AtTAF6. Segregation analysis showed that plants homozygous for the mutant allele were never found, indicating that inhibition of the AtTAF6 function is lethal. Genetic experiments also revealed that the male gametophyte was affected by the attaf6 mutation since significant reduced transmission of the mutant allele through the male gametophyte was observed. Detailed histological and morphological analysis showed that the T-DNA insertion in AtTAF6 specifically affects pollen tube growth, indicating that the transcriptional regulation of only a specific subset of genes is controlled by this basal transcription factor.

journal_name

Dev Biol

journal_title

Developmental biology

authors

Lago C,Clerici E,Dreni L,Horlow C,Caporali E,Colombo L,Kater MM

doi

10.1016/j.ydbio.2005.06.006

subject

Has Abstract

pub_date

2005-09-01 00:00:00

pages

91-100

issue

1

eissn

0012-1606

issn

1095-564X

pii

S0012-1606(05)00398-2

journal_volume

285

pub_type

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