Abdel Wahab A M, Zahran H H
Z Allg Mikrobiol. 1979;19(10):681-5.
Salt tolerance of five rhizobia strains was examined in broth cultures. Five levels of NaCl concentration were used and the optical density was taken as a measure for the vigour of bacterial growth. Rhizobium leguminosarum and R. meliloti were tolerant to high levels of salinity and growth curves in saline broth showed a similar pattern to the control level. Rhizobium japonicum, cowpea Rhizobium, and R. trifolii were intolerant to salt and showed a strong growth retardation with increasing salt concentration. Growth was inhibited at high levels of salinity. It is suggested that rhizobia sensitivity to salts may be partly responsible to the inhibition of nitrogen fixation by legumes growing under salt stress.
在肉汤培养物中检测了五株根瘤菌菌株的耐盐性。使用了五个NaCl浓度水平，并将光密度作为细菌生长活力的度量指标。豌豆根瘤菌和苜蓿根瘤菌对高盐度具有耐受性，盐肉汤中的生长曲线与对照水平呈现相似模式。日本根瘤菌、豇豆根瘤菌和三叶草根瘤菌不耐盐，随着盐浓度增加表现出强烈的生长抑制。在高盐度水平下生长受到抑制。有人提出，根瘤菌对盐的敏感性可能部分导致了盐胁迫下生长的豆科植物固氮作用受到抑制。
