期刊
CHROMOSOMA
卷 118, 期 5, 页码 607-616出版社
SPRINGER
DOI: 10.1007/s00412-009-0222-8
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资金
- IPK (Gatersleben) [HO1779/10-1]
B chromosomes (Bs) are dispensable components of the genomes of numerous species. To test whether the transcriptome of a host is influenced by Bs, we looked for differences in expression in response to additional Bs. Comparative complementary DNA amplified fragment length polymorphism experiments resulted in the identification of 16 putative B-chromosome-associated transcripts. This comprises 0.7% of the total transcript number and indicates a low activity of Bs. We also provide evidence that B chromosome influences in trans the transcription of A chromosome sequences. The B-specific transcribed sequences B1334, B8149, and B2465 belong to high-copy families with similarity to mobile elements. For all analyzed B-chromosome-derived transcripts, similar A chromosome-encoded sequences were found which supports an A-derived origin of rye B chromosomes.
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