NDLI: The C1 locus in maize (Zea mays L.): effect on gene expression

Content Provider	Springer Nature Link
Author	Edwards, J. Stoltzfus, D. Peterson, P. A.
Copyright Year	2001
Abstract	The focus of this genetic study is on the expression of two wild-type alleles [Wisconsin (W22 C) and Cornell (Cornell)] at the C1 locus, functioning in their color-producing roles, that can be distinguished by assaying the gene expression in their competitive capacity against a third allele at that locus. The third allele is a transposon-induced color-suppressing allele with a deficiency that suppresses anthocyanin color. This color suppressing allele (C1-lΔ), however, is not as fully potent as the standard color suppressing allele C1-I (std) and, thus, is competed more readily against the C1 allele in the regulatory control of anthocyanin coloration. Both the C1-lΔ and C1-I(std) alleles have somewhat similar deficiencies and produce truncated transcripts. In the measurement of anthocyanin production in heterozygote genotypes of the two wild-type alleles against the C1-lΔ color suppressor, the following could be shown genetically: that the inhibitor allele reduces color; the two wild-type alleles are different in their competitive capacity against C1-lΔ; and the genetic background of the two lines influences the degree of color expression. A hypothesis is presented that this study provides a genetic demonstration of the competition for transcription sites on the promoter between two different wild-type alleles that does lead to differences in gene expression. Further, this study illustrates how a genetic investigation could uncover subtle differences among seemingly similar wild-type alleles.
Starting Page	718
Ending Page	724
Page Count	7
File Format	PDF
ISSN	00405752
Journal	Theoretical and Applied Genetics
Volume Number	103
Issue Number	5
e-ISSN	14322242
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-10-01
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Genetics Medicine Biotechnology Agronomy and Crop Science

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