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Title

A plant small heat shock protein gene expressed during zygotic embryogenesis but noninducible by heat stress

AuthorsCarranco, Raúl CSIC ORCID; Almoguera, Concepción CSIC ORCID ; Jordano, Juan CSIC ORCID
KeywordsDevelopmental regulation
Seed maturation
Messenger-RNAS
Water-stress
Promoter
Elements
Pea
Localization
Drosophila
Induction
Issue Date24-Oct-1997
PublisherAmerican Society for Biochemistry and Molecular Biology
CitationJournal of Biological Chemistry 272(43): 27470–27475 (1997)
AbstractA small heat shack protein (sHSP) gene from sunflower, Ha hsp17.6 G1, showed expression patterns that differ from what is known for members of this gene family. The mRNAs of this gene accumulated in seeds during late desiccation stages of zygotic embryogenesis but not in response to heat shock in vegetative tissues, The failure to respond to heat shock was independent of the developmental stage after germination and shock temperature. Nuclear run-on analyses demonstrated that transcription from the Ha hsp17.6 G1 promoter is not induced by heat shock, This agrees with the presence, in this promoter, of sequences with little similarity to heat shock elements, Our results show an evolutionary divergence, in the regulation of plant sHSP genes, which has originated stress-responsive genes and nonresponsive members within this gene family, We discuss implications for mechanisms controlling the developmental regulation of sHSP genes in plants.
DescriptionThe nucleotide sequence(s) reported in this paper has been submitted to the GenBankTM/EBI Data Bank with accession number(s) Z95153.
Publisher version (URL)http://dx.doi.org//10.1074/jbc.272.43.27470
URI10261/32228
DOI10.1074/jbc.272.43.27470
ISSN0021-9258
E-ISSN1083-351X
Appears in Collections:(IRNAS) Artículos

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