Melon yellow spot virus: an emerging disease of cucurbits in Asia
Melon yellow spot virus (Tospovirus, MYSV) was first identified in 1992 in Japan causing spotted wilt symptoms and a severe chlorosis on melon crops (EPPO RS 2000/158). It was also found that MYSV is transmitted by Thrips palmi (EPPO A1 List) in a persistent manner. In addition to melons (Cucumis melo), diseases caused by MYSV have been observed on cucumbers (Cucumis sativus), watermelon (Citrullus lanatus) and balsam pear (Momordica charantia). MYSV has also been detected in several weed species commonly occurring around cucumber greenhouses (e.g. Acalypha australis, Capsella bursa-pastoris, Conyza canadensis, Conyza sumatrensis, Gnaphalium purpureum, Lamium amplexicaule, Oxalis corniculata, Sonchus oleraceus, Stellaria media, Stellaria neglecta, Veronica persica). At present, MYSV is considered to be one of the most serious threats to cucumber production in Japan. When infection occurs early in the season, yield losses of 30 to 60% have been observed. In addition to Japan, MYSV has been reported during the last decade on cucurbitaceous crops in Taiwan (2006), Thailand (2008), and China (2009, Hainan and Guangxi provinces).
Chao CH, Chen TC, Kang YC, Li JT, Huang LH, Yeh SD (2010) Characterization of Melon yellow spot virus infecting cucumber (Cucumis sativus L.) in Taiwan. Plant Pathology Bulletin 19, 41-52.
Chen TC, Lu, YY, Cheng YH, Chang CA, Yeh SD (2008) Melon yellow spot virus in watermelon: a ﬁrst record from Taiwan. Plant Pathology 57, p 765.
Chiemsombat P, Gajanandana O, Warin N, Hongprayoon R, Bhunchoth A, Pongsapich, P (2008) Biological and molecular characterization of tospoviruses in Thailand. Archives of Virology 153(3), 571-577 (abst.).
Gu QS, ;Wu HJ, Chen HY, Zhang XJ, Wu MZ, Wang DM, Peng B, ;KongXY, Liu JT (2012) Melon yellow spot virus identified in China for the first time. New Disease Reports 25, 7. http://www.ndrs.org.uk/article.php?id=025007
Kato K, Hanada K, Kameya-Iwaki M (2000) Melon yellow spot virus: a distinct species of the genus Tospovirus isolated from melon. Phytopathology 90(4), 422-426.
Peng JC, Yeh SD, Huang LH, Li HH, Cheng YF, Chen TC (2011) Emerging threat of thrips-borne Melon yellow spot virus on melon and watermelon in Taiwan. European Journal of Plant Pathology 130(2), 205-214.
Takeuchi S, Shimomoto Y, Ishikawa K (2009) First report of Melon yellow spot virus infecting balsam pear (Momordica charantia L.) in Japan. Journal of General Plant Pathology 75(2), 154-156.
Yamasaki S, Okazaki S, Okuda M (2012) Temporal and spatial dispersal of Melon yellow spot virus in cucumber greenhouses and evaluation of weeds as infection sources. European Journal of Plant Pathology 132(2), 139-177.