Dunleavy J M, Urs N V
J Virol. 1973 Jul;12(1):188-93. doi: 10.1128/JVI.12.1.188-193.1973.
A phage, SBX-1, and its bacterial host, Xanthomonas sp. 1, were isolated consistently from roots, internal portions of stems, and leaves of soybean plants. Phage titer in leaves was highly variable. It was very low in seedlings, reached a maximum of 10(4) PFU/ml of sap after 11 weeks of plant growth and again dropped to very low levels. We isolated SBX-1 from plants of all 45 varieties studied, but not consistently from some. Plants of some varieties also carried Xanthomonas sp. 2, which was resistant to infection by SBX-1. The SBX-1 particle has a polyhedral head containing DNA of density 1.709. It has an edge-to-edge diameter of 80 nm and a tail length of 112 nm. The tail has a base plate and spikes. This is the first report of the extensive and continuous occurrence of a phage and its host bacterium in plants.
一种噬菌体SBX - 1及其细菌宿主黄单胞菌属1，一直从大豆植株的根、茎内部和叶片中分离得到。叶片中的噬菌体滴度变化很大。在幼苗中滴度非常低，在植株生长11周后，汁液中的滴度最高达到10(4) PFU/ml，之后又降至非常低的水平。我们从所研究的45个品种的植株中都分离到了SBX - 1，但在一些品种中分离并不稳定。一些品种的植株还携带黄单胞菌属2，该菌对SBX - 1的感染具有抗性。SBX - 1颗粒有一个多面体头部，包含密度为1.709的DNA。它的边到边直径为80 nm，尾部长度为112 nm。尾部有基板和尾刺。这是关于噬菌体及其宿主细菌在植物中广泛且持续存在的首次报道。
