Department of Agronomy and Range Science, University of California, Davis, California 95616, and John Innes Institute, Colney Lane, Norwich NR4 7UH, United Kingdom.
Appl Environ Microbiol. 1984 Apr;47(4):876-8. doi: 10.1128/aem.47.4.876-878.1984.
Plasmid pIJ1008, which carries determinants for uptake hydrogenase (Hup) activity, was transferred from Rhizobium leguminosarum to Rhizobium meliloti without impairing the capacity of the latter species to form root nodules on alfalfa. The plasmid was still present in rhizobia reisolated from the root nodules of 12 different alfalfa cultivars, but only low levels of Hup activity were detected in alfalfa.
质粒 pIJ1008 携带了氢化酶(Hup)活性的摄取决定子,从根瘤菌属转移到了苜蓿根瘤菌中,而没有损害后者在紫花苜蓿上形成根瘤的能力。该质粒仍然存在于从 12 种不同紫花苜蓿品种的根瘤中重新分离的根瘤菌中,但在紫花苜蓿中只检测到低水平的 Hup 活性。