In:
FEBS Letters, Wiley, Vol. 582, No. 6 ( 2008-03-19), p. 943-948
Abstract:
Calmodulin‐binding transcription activator (CAMTA) 3 (also called SR1) is a calmodulin‐binding transcription factor in Arabidopsis . Two homozygous T‐DNA insertion mutants ( camta3‐1 , camta3‐2 ) showed enhanced spontaneous lesions. Transcriptome analysis of both mutants revealed 6 genes with attenuated expression and 99 genes with elevated expression. Of the latter, 32 genes are related to defense against pathogens (e.g. WRKY33, PR1 and chitinase). Propagation of a virulent strain of the bacterial pathogen Pseudomonas syringae and the fungal pathogen Botrytis cinerea were attenuated in both mutants. Moreover, both mutants accumulated high levels of H 2 O 2 . We suggest that CAMTA3 regulates the expression of a set of genes involved in biotic defense responses.
Type of Medium:
Online Resource
ISSN:
0014-5793
,
1873-3468
DOI:
10.1016/j.febslet.2008.02.037
Language:
English
Publisher:
Wiley
Publication Date:
2008
detail.hit.zdb_id:
1460391-3
SSG:
12