INVESTIGADORES
MUFARREGE Eduardo Federico
artículos
Título:
Common Sets of Promoter Elements Determine the Expression Characteristics of Three Arabidopsis Genes Encoding Isoforms of Mitochondrial Cytochrome c Oxidase Subunit 6b
Autor/es:
EDUARDO F. MUFARREGE , GRACIELA C. CURI AND DANIEL H. GONZALEZ
Revista:
PLANT AND CELL PHYSIOLOGY
Editorial:
OXFORD UNIV PRESS
Referencias:
Año: 2009 vol. 50 p. 1 - 7
ISSN:
0032-0781
Resumen:
The promoters of the three Arabidopsis nuclear genes
encoding mitochondrial cytochrome c oxidase subunit
6b ( AtCOX6b ) have similar expression patterns, with
preferential expression in anthers and meristems, and
are induced by sucrose and etiolation. Additionally,
induction of AtCOX6b-1 by GA 3 and AtCOX6b-3 by
6-benzylaminopurine was observed. Site II elements
(TGGGCC/T) present in the three promoters bind
common nuclear proteins and are important for basal and
induced expression. Induction by sucrose requires, in
addition, the integrity of elements with the sequence
TACTAA. The results imply the participation of common
regulatory factors in the expression of the three Arabidopsis
COX6b genes.