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Updated: Aug 13, 2026

Lateral Root Inducible System in Arabidopsis and Maize
Published on: January 15, 2016
The Sec-1 locus on the short arm of chromosome 1R of rye (Secale cereale)
B C Clarke1, Y Mukai, R Appels
1C.S.I.R.O. Division of Plant Industry, P.O. Box 1600, A.C.T. 2601, Australia.
Abstract:
This paper describes a detailed sequence analysis of the omega-secalin gene array at the Sec-1 locus on the short arm of chromosome 1 of rye. The analysis shows that the genes are separated by 8 kb of spacer sequence and that the gene/spacer units are arranged in a head to tail fashion. The boundaries of the array are identified, and a fragment containing the majority of the genes in the array is separated by PFG analysis. The sequence data of one 9.2 kb gene unit have been determined, and because of the similarity of the gene units within the array these data provide a detailed sequence analysis of 140 kb of the Sec-1 locus. Fluorescence in situ hybridization, using lambda clones isolated for the structural analysis, identifies the position of the array on the rye chromosomes relative to the 5S rRNA genes.
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