Summary
Revertant derivates (bz-m4 to Bz′ 1 and Bz′ 7) of the bz-m4 sh mutant allele were investigated for their UDP-Glucose: flavonoid 3-O-glucosyltransferase (UFGT) activity in the subaleurone endosperm layer of developing kernels. The UFGT activity profile during development in Bz′ 1 subaleurone endosperm is partly the same as that of the bz-m4 mutant. This result is interpreted as supportive evidence for the occurence of gene fusion in the original bz-m4 sh mutant allele, causing the alteration in time and place of activity of the structurally unaltered UFGT in bz-m4 kernels. The possibility that regulating sequences of the sh gene are fused with the structural sequences of the Bz gene is discussed.
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Gerats, A.G.M., Groot, S.P.C., Peterson, P.A. et al. Regulation of UFGT activity in the bz-m4 allele of Zea mays: A possible case of gene fusion. Mol Gen Genet 190, 1–4 (1983). https://doi.org/10.1007/BF00330316
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DOI: https://doi.org/10.1007/BF00330316