Radiation-sensitive mutants of T4D. II. T4y: genetic characterization |
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| Authors: | J M Boyle |
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| Affiliation: | 1. Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture of the People''s Republic of China, Nanjing Agricultural University, Nanjing, 210095, PR China;2. Zhongshan Biological Breeding Laboratory (ZSBBL), Nanjing Agricultural University, Nanjing, 210095, PR China;3. National Innovation Platform for Soybean Breeding and Industry-Education Integration, Nanjing Agricultural University, Nanjing, 210095, PR China;4. State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, PR China;5. National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, PR China;6. Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, PR China;7. Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, PR China;8. College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China;1. Natural Resources Institute, University of Greenwich, Chatham Maritime, Kent, ME4 4TB, UK;2. International Institute of Tropical Agriculture (IITA), Oyo Road, PMB 5320, Ibadan, Nigeria;3. National Root Crops Research Institute, Km 8 Ikot Ekpene Road, PMB 7006, Umudike, Nigeria;1. Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom;2. Section of Paediatric Infectious Disease, Department of Infectious Disease, Imperial College London, London, United Kingdom;3. Wolfson College, University of Cambridge, Cambridge, United Kingdom;4. Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom;1. Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan;2. Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda, Hyogo 669-1330, Japan;3. Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo 670-8524, Japan;4. The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka 565-0871, Japan;5. Department of Developmental Medicine, Research Institute, Osaka Women''s and Children''s Hospital, Izumi-shi, Osaka 594-1101, Japan |
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| Abstract: | A complementation system for radiation-sensitive phage mutants is described. The mutants v, x and y are shown to belong to three distinct cistrons having the wild-type allele dominant in each case. The UV-survival curves of the phenotypes of these cistrons are distinct, with sensitivities, relative to the mutant phage sensitivities, of 1.6, 3.2 and 6.8% for v, y and x respectively.Mapping experiments show the 3 mutations to be unlinked.The UV-survival properties of the double mutants vx, vy and xy are compared, and the results strongly support the hypothesis that x and y form a class of radiation-sensitive mutants which function in a manner different from v. Some possible functions of x and y are discussed. |
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