Infectivity analysis of a soybean isolate of Mungbean yellow mosaic India virus by agroinoculation |
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| Authors: | Katoor S Usharani Baliji Surendranath Qazi MR Haq Varagur G Malathi |
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| Institution: | (1) Plant Virology Unit, Division of Plant Pathology, Indian Agricultural Research Institute, New Delhi, 110 012, India;(2) Department of Biosciences, Jamia Millia Islamia University, New Delhi, India |
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| Abstract: | Yellow mosaic disease (YMD) of legumes endemic to South Asia are caused by begomoviruses transmitted by whiteflies. Based on molecular characterization, two distinct viruses – Mungbean yellow mosaic India virus (MYMIV) and Mungbean yellow mosaic virus (MYMV) – were found previously to be the etiological agents of YMD in legumes. Here, host range studies with a soybean isolate of MYMIV (MYMIV-Sb]) were carried out by both whitefly transmission and agroinoculation. MYMIV-Sb] was similar to a cowpea isolate of MYMIV (MYMIV-Cp]) in its ability to infect cowpea, thus differing from blackgram (MYMIV) and mungbean (MYMIV-Mg]) isolates, which do not infect cowpea. Genomic analysis of DNA A and DNA B components of these MYMIV isolates show characteristic differences in complete DNA B nucleotide sequence correlating with host range differences. |
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| Keywords: | Begomovirus Whitefly Legume Soybean Agroinoculation |
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