Changes in Chloroplast mRNA Stability during Leaf Development.
Open Access
- 1 May 1991
- journal article
- Published by Oxford University Press (OUP) in Plant Cell
- Vol. 4 (4), 517-529
- https://doi.org/10.1105/tpc.3.5.517
Abstract
In previous studies using leaves of light-grown transgenic tobacco plants, we have shown that sequences located within the transcribed region of the pea Fed-1 gene (encoding ferredoxin I) are major cis-acting determinants of light-regulated mRNA accumulation. However, we show here that these internal sequences are less important for the Fed-1 light response in etiolated tobacco seedlings than they are in green leaves and that upstream elements confer organ specificity and contribute significantly to Fed-1 light responses in etiolated material. Light effects mediated by upstream response elements are thus most pronounced during the initial induction of gene activity, whereas internal elements play a more prominent role in modulating Fed-1 expression once the gene is already active.Keywords
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