Author(s): M. R. Ara*, M. M. H. Masud and A. M. Akanda

*Corresponding author; Email:


A study was conducted to identify if viruses infecting weeds act as alternate host. In all five different viruses namely TPVV(Tomato Purple Vein Virus), CMV-Y (Cucumber Mosaic Virus-Y ), OYVCMV (Okra Yellow Vein clearing Mosaic Virus), MYMV (Mungbean Yellow Mosaic Virus), TYLCV (Tomato Yellow Leaf Curl Virus) were identified as the  causal virus/possible causal viruses from  virus disease like symptoms developed under natural condition on six weed species Blumea laceracera (Kremahan), Salamum torvum (Soushumber), Jussiaea suffruticosa (Wing Water Primrose),  Physalis heterophylla (Ground cherry),  Ageratum conyzoides (Goat weed), Synedrella nodiflora (Babadoton lalaki) growing at Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur, campus. The viruses were identified on the basis of symptomatological study and inoculation test.  It was observed that MYMV caused Yellow Mosaic of Blumea laceracera, while TYLCV caused leaf distortion mosaic of Solarium tarvum, mosaic of Physalis heterophylla, yellow mosaic of Synedrella nodiflora, mosaic of Ageratun conyzoides. OYVCMV was diagnosed as the causal agent of vein chlorosis of Synedrella nodiflora . It was found that TPVV caused yellow vein mosaic of Jussiaea suffruticosa. All the viruses so far identified were member of Gminivirus group except CMV-Y, which belong to Comovirus group.

Keywords: Virus, weed, Alternate host.

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