Document Detail


Functional architecture of the light-responsive chalcone synthase promoter from parsley.
MedLine Citation:
PMID:  2535519     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We have combined in vivo genomic footprinting and light-induced transient expression of chalcone synthase promoter derivatives in parsley protoplasts to identify cis sequences regulating light activation. The parsley chalcone synthase promoter contains two cis "units" that are light-responsive. Each unit is composed of short DNA stretches of approximately 50 base pairs, and each contains two in vivo footprints. One of the footprints in each unit covers a sequence that is highly conserved among other light- and stress-regulated plant genes. The other footprinted sequences in each unit are not related to each other. The TATA distal light-responsive unit is inherently weak but can compensate partially for the loss of the stronger TATA proximal unit. Levels of light-induced expression from either can be influenced by the presence of a region of approximately 100 base pairs located upstream of the TATA distal light-responsive unit. Combination of the light-responsive units and upstream region generates a synergistic response to light. We speculate that functional compensation generated by nonidentical, but sequence-related, cis units foreshadows combinatorial diversity of cognate trans factors.
Authors:
P Schulze-Lefert; M Becker-André; W Schulz; K Hahlbrock; J L Dangl
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  The Plant cell     Volume:  1     ISSN:  1040-4651     ISO Abbreviation:  Plant Cell     Publication Date:  1989 Jul 
Date Detail:
Created Date:  1992-10-15     Completed Date:  1992-10-15     Revised Date:  2010-09-10    
Medline Journal Info:
Nlm Unique ID:  9208688     Medline TA:  Plant Cell     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  707-14     Citation Subset:  IM    
Affiliation:
Department of Biochemistry, Max-Planck-Institut für Züchtungsforschung, Köln, Federal Republic of Germany.
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MeSH Terms
Descriptor/Qualifier:
Acyltransferases / genetics*,  metabolism
Base Sequence
Cells, Cultured
DNA
Gene Expression Regulation
Light
Molecular Sequence Data
Plants / genetics*
Promoter Regions, Genetic* / radiation effects
Protoplasts
Restriction Mapping
Chemical
Reg. No./Substance:
9007-49-2/DNA; EC 2.3.-/Acyltransferases; EC 2.3.1.74/flavanone synthetase
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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