Jackson D et al. 1991
- Authors:
Jackson D. Culianez-Macia F. Prescott AG. Roberts K. Martin C.
- Title:
Expression patterns of myb genes from Antirrhinum flowers.
- Reference location:
Plant Cell. 3(2):115-25, 1991 Feb.
- Abstract:
Six genes that contain sequence encoding the DNA binding domain of the Myb
oncoproteins have been isolated from a cDNA library prepared from
Antirrhinum majus (snapdragon) flowers using oligonucleotide probes
directed against part of this domain. The derived amino acid sequences of
these genes reveal acidic domains in their carboxy termini, suggesting
that they might act as transcriptional activators. Analysis of their
expression patterns with respect to organ specificity, floral
differentiation, and response to light suggests that these genes are not
involved in controlling anthocyanin biosynthesis, unlike the characterized
myb-related genes C1 and Pl from maize. One of the genes is expressed
mainly in the nectary and the transmitting tract of the style, two major
secretory tissues of the flower, suggesting that the function of this gene
is related to active carbohydrate secretion. We conclude that plants
contain a number of myb-related transcriptional activators involved in a
diversity of gene regulation.
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