A new member of the Arabidopsis WRKY transcription factor family, AtWRKY6,is associated with both senescence- and defence-related processes

Citation
S. Robatzek et Ie. Somssich, A new member of the Arabidopsis WRKY transcription factor family, AtWRKY6,is associated with both senescence- and defence-related processes, PLANT J, 28(2), 2001, pp. 123-133
Citations number
38
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences","Animal & Plant Sciences
Journal title
PLANT JOURNAL
ISSN journal
0960-7412 → ACNP
Volume
28
Issue
2
Year of publication
2001
Pages
123 - 133
Database
ISI
SICI code
0960-7412(200110)28:2<123:ANMOTA>2.0.ZU;2-Y
Abstract
WRKY proteins constitute a large family of plant-specific transcription fac tors whose precise functions have yet to be elucidated. Here we show that e xpression of one representative in Arabidopsis, AtWRKY6, is influenced by s everal external and internal signals often involved in triggering senescenc e processes and plant defence responses. Progressive 5' deletions of the At WRKY6 promoter allowed separation of defined regions responsible for the ex pression in distinct organs or upon pathogen challenge. Nuclear localizatio n of AtWRKY6 was demonstrated; protein truncations and gain-of-function stu dies enabled delineation of a region harbouring a novel type of functional nuclear localization signal (NLS).