Hammond J, Reinsel M D, Maroon-Lango C J
U.S. Department of Agriculture, Agricultural Research Service, U.S. National Arboretum, Floral and Nursery Plants Research Unit, Beltsville, Maryland 20705, USA.
Arch Virol. 2006 Mar;151(3):477-93. doi: 10.1007/s00705-005-0646-2. Epub 2005 Oct 7.
A potexvirus was isolated from creeping phlox (Phlox stolonifera) plants from a commercial nursery in Pennsylvania. The virus was serologically related to clover yellow mosaic virus, plantain virus X, potato virus X, and potato aucuba mosaic virus, and was most closely related to papaya mosaic virus (PapMV). The sequence of a PCR fragment obtained with potexvirus group-specific primers was distinct from that of PapMV; the coat protein (CP) gene and 3' untranslated region (UTR) were closely related to Alternanthera mosaic virus (AltMV), previously reported only from Australia. The host range was similar to that of the Australian isolate (AltMV-Au), and the phlox isolate reacted strongly with antiserum to AltMV-Au. The full sequence of the phlox isolate was more closely related to PapMV throughout the genome than to any potexvirus other than AltMV-Au, for which only the CP and 3'UTR sequences are available. The phlox isolate was therefore named AltMV-PA (for Pennsylvania), and the full 6607 nt sequence is presented(1). Additional AltMV isolates from creeping phlox (AltMV-BR and AltMV-SP) and trailing portulaca (Portulaca grandiflora; AltMV-Po) were also isolated, suggesting that AltMV may be widespread, and may have been mis-diagnosed in the past as PapMV. AltMV has the potential to spread to other ornamental crops.
从宾夕法尼亚州一家商业苗圃的匍匐福禄考（Phlox stolonifera）植株中分离出一种马铃薯X病毒属病毒。该病毒在血清学上与三叶草黄花叶病毒、车前草病毒X、马铃薯X病毒和马铃薯奥古巴花叶病毒相关，且与番木瓜花叶病毒（PapMV）关系最为密切。用马铃薯X病毒属特异性引物获得的PCR片段序列与PapMV不同；其外壳蛋白（CP）基因和3'非翻译区（UTR）与Alternanthera花叶病毒（AltMV）密切相关，此前仅在澳大利亚有报道。其寄主范围与澳大利亚分离株（AltMV-Au）相似，福禄考分离株与抗AltMV-Au血清反应强烈。在整个基因组中，福禄考分离株的全序列与PapMV的关系比与除AltMV-Au以外的任何马铃薯X病毒属病毒的关系更密切，而对于AltMV-Au仅有CP和3'UTR序列可用。因此，福禄考分离株被命名为AltMV-PA（代表宾夕法尼亚州），并给出了完整的6607 nt序列(1)。还从匍匐福禄考（AltMV-BR和AltMV-SP）和垂枝马齿苋（Portulaca grandiflora；AltMV-Po）中分离出了其他AltMV分离株，这表明AltMV可能广泛存在，且过去可能被误诊为PapMV。AltMV有可能传播到其他观赏作物。
