Changes in state of the Wx-m5 allele of maize are due to intragenic transposition of Ds
Article Abstract:
The maize waxy (Wx)-m5 allele was isolated and characterized. In the absence of an Ac insertion, the Wx-m5 allele is phenotypically wild-type, although the level of enzyme activity is reduced relative to the wild-type. Sequence analysis showed that Wx-m5 contains either one or two Ds inserts, with the insertion at -470 relative to the transcriptional start site constituting a part of the Wx gene. In the presence of Ac, Wx-m5 exhibits mutant wx sectors and gives rise to wx-m and wx derivatives. The clonal sectors of Wx-m5 represents transposon insertion with the concommitant loss of gene expression.
Publication Name: Genetics
Subject: Biological sciences
ISSN: 0016-6731
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Genetic study of the loss and restoration of mutator transposon activity in maize: evidence against dominant-negative regulator associated with loss of activity
Article Abstract:
The heritability of Mu transposon activity was studied in a maize line exhibiting non-Mendelian transmission of this trait. Transmission rates of Mu activity were high in both sexes, but this rate was higher and less variable for the female. Backcrossing with active Mu plants restored Mu activity lost by outcrossing or selfing. Mu1 elements were hypermethylated in Mu-inactive plants, regardless of lineage. These results ran counter to predictions based on previously published data.
Publication Name: Genetics
Subject: Biological sciences
ISSN: 0016-6731
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Adjacent sequences influence DNA repair accompanying transposon excision in maize
Article Abstract:
Transposon footprints are rearrangements of DNA sequences caused by the flanking of mobile elements. An analysis of a corn gene responsible for expressing waxiness revealed that the development of transposon footprints followed a definite arrangement within the sites where they excise. It is suggested that the definitive arrangement of transposon footprints result from the flanking sequences of transposons during DNA repair processes.
Publication Name: Genetics
Subject: Biological sciences
ISSN: 0016-6731
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Alteration of soil rhizosphere communities following genetic transformation of white spruce. In vivo monitoring of obligate biotrophic pathogen growth by kinetic PCR
- Abstracts: Rabaptin-5 is a direct effector of the small GTPase Rab5 in endocytic membrane fusion. Caveolin-stabilized membrane domains as multifunction transport and sorting devices in endocytic membrane traffic
- Abstracts: Structure of the Y chromosomal Su(ste) locus in Drosophila melanogaster and evidence for localized recombination among repeats
- Abstracts: Transposable element distributions in Drosophila. The evolution of duplicate glyceraldehyde-3-phosphate dehydrogenase genes in Drosophila