Widely distributed in water environments and in soil, cyanobacteria are hosts of lysogenic or lytic bacterioviruses. A novel, probably lysogenic virus (phage) for which the name Arthronema africanum virus TR020 (Aa-TR020) is proposed, has been isolated from filamentous freshwater cyanobacterium Arthronema africanum. The virus formed turbid plaques on plate culture of A. africanum strain 1980/01 but not on other Arthronema strain and other bacterial species. The genome of Aa-TR020 is linear molecule of dsDNA, 44,805 bp in length with 216 bp long terminal repeats and with G + C content of 46%. Fifty-five genes organized on plus and minus strands were predicted there. The genome size, gene arrangement, and selected protein sequences showed relatedness to Phormidium virus Pf-WMP3 and other viruses known to infect cyanobacteria and classified in the family Podoviridae.

蓝细菌广泛分布于水环境和土壤中，是溶源性或裂解性细菌病毒的宿主。已经从丝状淡水蓝藻非洲拟南芥中分离出了一种新颖的，可能是溶原性病毒（噬菌体），其名称为非洲拟南芥病毒TR020（Aa-TR020）。该病毒在A. africanum菌株1980/01的平板培养物中形成混浊的噬菌斑，但未在其他节肢动物上形成菌株和其他细菌种类。Aa-TR020的基因组是dsDNA的线性分子，长度为44,805 bp，末端重复序列为216 bp，G + C含量为46％。在那里预测有55条正负链组织的基因。基因组大小，基因排列和选择的蛋白质序列显示关联于席藻病毒PF-WMP3和已知感染蓝藻和归类于家族其它病毒短尾噬菌体科。