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Genes for zein subunits on maize chromosone 4

✍ Scribed by C. Soave; R. Reggiani; N. Fonzo; F. Salamini

Book ID
104787386
Publisher
Springer
Year
1982
Tongue
English
Weight
549 KB
Volume
20
Category
Article
ISSN
0006-2928

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✦ Synopsis

This paper maps nine genes coding for zein subunits on maize chromosome 4.

Six of them (Zp6h, Zpl0, Zpl4, Zpl5, Zp22) encode for subunits with a molecular weight of 22 Kd (kilodaltons), while three (Zp27, Zp28, Zp30) code 20-kd subunits. The six 22-kd related genes are not contiguous but are scattered on both chromosome arms, whereas Zp27, Zp28, and Zp30 are more tightly linked in the chromosome short arm in a segment 5 crossover units long. The organization of zein genes on chromosome 4 shows a close analogy with that of zein loci on chromosome 7. This suggests that both maize chromosomes evolved by duplication of short segments.

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