A nine-base pair deletion distinguishes two En/Spm transposon alleles in maize: their genetic activity and molecular description
2008
Menssen, A., Iowa State University, Ames, Iowa (USA). Department of Agronomy | Peterson, P.A., Iowa State University, Ames, Iowa (USA). Department of Agronomy
Two En/Spm-transposable element alleles of the A1 locus in maize (Zea mays) are described. One of the alleles is al-m (papu), (Peterson, 1961). The distinctive phenotype of this allele is characterized with pale and purple sectoring amidst large areas of no sectoring. The other allele, al-m (Au), appears full colored but is heavily mutating and expresses large colorless areas. These two alleles differ in the frequency of derivative products. A molecular description is provided in an attempt to explain these differences in phenotypes and derivative products. A nine-base-pair deficiency in Exon 2 of the A1 locus of the al-m (papu) allele originated following the origin of this allele and this deficiency is likely responsible for the differential phenotypes. The possible origin of this nine-base-pair deletion is discussed.
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