Paau A S, Bloch C B, Brill W J
J Bacteriol. 1980 Sep;143(3):1480-90. doi: 10.1128/jb.143.3.1480-1490.1980.
Nitrogen-fixing bacteroids are degraded during nodule senescence. This is in contrast to recent implications that viable bacteroids can be released into soil from legume nodules. Rhizobia originating from persistent infection threads in senescing nodule plant cells seem to be the source of viable cells required for perpetuation of the Rhizobium spp. population in the soil. Our conclusions were derived from electron microscopic examination of stages of development and senescence of alfalfa root nodules.
固氮类菌体在根瘤衰老过程中会被降解。这与最近关于活的类菌体可从豆科植物根瘤释放到土壤中的观点形成了对比。源自衰老根瘤植物细胞中持续感染丝的根瘤菌似乎是土壤中根瘤菌种群延续所需活细胞的来源。我们的结论来自于对苜蓿根瘤发育和衰老阶段的电子显微镜检查。
