Construction and characterization of a bacterial artificial chromosome library for the A-genome of cotton (G. arboreum L.).
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.
Hu
Yan
Y
National Key Laboratory of Crop Genetics & Germplasm Enhancement, Cotton Research Institute, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
Lu
Yamin
Y
Ma
Dan
D
Guo
Wangzhen
W
Zhang
Tianzhen
T
D001709:Biotechnology / Q000379:methods*; D022202:Chromosomes, Artificial, Bacterial / Q000235:genetics*; D015723:Gene Library; D018745:Genome, Plant / Q000235:genetics*; D003368:Gossypium / Q000235:genetics*; D016133:Polymerase Chain Reaction
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