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Comparative Study
. 2004 Dec 7;271 Suppl 6(Suppl 6):S482-4.
doi: 10.1098/rsbl.2004.0228.

Evidence for 'cross-talk' between A and B chromosomes of rye

Teresa Ribeiro  1 , Bruno Pires, Margarida Delgado, Wanda Viegas, Neil Jones, Leonor Morais-Cecílio
Affiliations
Comparative Study

Evidence for 'cross-talk' between A and B chromosomes of rye

Teresa Ribeiro et al. Proc Biol Sci. .

Abstract

Spontaneous DNA insertions from supernumerary B chromosomes (Bs) into the standard A chromosome complement were detected in rye (Secale cereale L.), using fluorescent in situ hybridization (FISH) analysis with the D1100 B-specific sequence probe. The insertions were seen in individuals derived from plants possessing deleted Bs, characterized in this study by not having the B-specific sequences that are normally found at the distal part of the long arm of the standard rye B. This result supports the case for the spontaneous introgression of B-specific DNA into the A chromosome genome, and it indicates that 'cross-talking' between A and B chromosomes may occur in wild populations.

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References

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