JOURNAL ARTICLE

Construction and characterization of a bacterial artificial chromosome library for the A-genome of cotton (G. arboreum L.)

Yan Hu, Yamin Lu, Dan Ma, Wangzhen Guo, Tianzhen Zhang
Journal of Biomedicine & Biotechnology 2010, 2010
20827418
A bacterial artificial chromosome (BAC) library for the A-genome of cotton has been constructed from the leaves of G. arboreum L cv. Jianglinzhongmian. It is used as elite A-genome germplasm resources in the present cotton breeding program and has been used to build a genetic reference map of cotton. The BAC library consists of 123,648 clones stored in 322 384-well plates. Statistical analysis of a set of 103 randomly selected BAC clones indicated that each clone has an average insert length of 100.2 kb per plasmid, with a range of 30 to 190 kb. Theoretically, this represents 7.2 haploid genome equivalents based on an A-genome size of 1697 Mb. The BAC library has been arranged in column pools and superpools allowing screening with various PCR-based markers. In the future, the A-genome cotton BAC library will serve as both a giant gene resource and a valuable tool for map-based gene isolation, physical mapping and comparative genome analysis.

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