文章基本信息

标题：Mutants That Produce Nitrogenase in the Presence of Ammonia
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作者：Joyce K. Gordon ; Winston J. Brill
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1972
卷号：69
期号：12
页码：3501-3503
DOI：10.1073/pnas.69.12.3501
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Mutants of Azotobacter vinelandii that fix N2 in the presence of excess NH4+ have been isolated. A mutant that was unable to synthesize component I and component II of nitrogenase was spontaneously reverted to the N2-fixing phenotype. Of 21 revertants picked, 7 revertants were not as sensitive as the wild type to repression. A derepressed mutant is as sensitive as the wild type to growth inhibition by 2-methylalanine in the presence of glucose.
关键词：soil fertility ; Azotobacter vinelandii ; pleiotropic-negative ; 2-methylalanine ; derepressed