New telomere clones and sequences added to the published rice genome sequence data
Telomeres, which are important for chromosome maintenance, are composed of long, repetitive DNA associated with a variety of telomere-binding proteins.
Recent efforts in RGP to map and sequence the rice telomere clones by screening of the AGI (Arizona Genomics Institute) fosmid library have made significant contribution in understanding the structure and composition of rice chromosomal ends.
A total of 8 clones containing telomere repeated sequences have been mapped to the chromosome ends of chr1S, 2S, 2L, 6L, 7S, 7L, 8S and 9S.
Among them, 7 telomere sequences have been incorporated in the IRGSP Build 4.0 pseudomolecules (Plant Journal 46:206-217, 2006; TAG 113: 419-428, 2006).
In addition, 6 new fosmid clones, which also contain telomere tandem-repeats, have been sequenced and mapped to the chromosomal ends of chr3S, 3L, 4S, 4L, 5S and 10S.
Consequently, 14 of the 24 chromosomal ends of the rice genome are now partially sequenced.
The telomere clones with the corresponding genomic sequences can be accessed in public databases with the following accession number:
(April 1, 2007)
For further details, please contact T. Matsumoto (mat@nias.affrc.go.jp) or J. Wu (jzwu@nias.affrc.go.jp).
last updated 2007.4.2
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