Abstract
Mapping of low or single-copy sequences on plant chromosomes has proven difficult because of very low frequency of signal detection. Rice BAC library is being used widely in rice genome research due to its distinctive advantages over other library systems. In this study, two biotin-labeled rice BAC clones closely linked to a rice blast resistance, green leafhopper resistance and tungro spherical virus resistance gene,Pi-5(t), Glh, RTSV, werein situ hybridized to rice chromosomes. They were located on the long arm and short arm of chromosome 4 with FL value of 40% and 100% respectively. The frequency of signal detection reached 46.8% and 59.2%. The signal location were consistent with the selective marker on rice saturated molecular map. The results demonstrated the advantages to locate BAC clones to chromosomes byin situ hybridization and will facilitate the rice low or single-copy gene location by using the BAC library.
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Supported by the National Natural Science Foundation of China and the Doctorate Vesting Point Foundation of the Education Department of the People's Republic of China
Yan Huimin: born in 1964, Lecturer
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Huimin, Y., Yunchun, S., Lijia, L. et al. Physical location of the ricePi-5(t), Glh andRTSV genes by ISH of BAC clones. Wuhan Univ. J. Nat. Sci. 3, 226–230 (1998). https://doi.org/10.1007/BF02827558
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DOI: https://doi.org/10.1007/BF02827558