Peanut green mosaic virus — a member of the potato virus Y group infecting groundnut (Arachis hypogaea) in India |
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| Authors: | P. SREENIVASULU ,N. IIZUKA &dagger ,R. RAJESHWARI,D. V. R. REDDY,M. V. NAYUDU |
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| Affiliation: | Groundnut Improvement Programme, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru P. O. Andhra Pradesh 502 324, India;*Department of Botany, S. V. University, Tirupati-517 502, Andhra Pradesh, India.;†Visiting Scientist from Tropical Agriculture Research Centre. |
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| Abstract: | A virus, now named peanut green mosaic virus (PGMV), was isolated from groundnut (Arachis hypogaea) in India and identified as a member of the potato virus Y group by electron microscopy, aphid transmission, and its chemical properties. It was sap transmissible to 16 species of the Leguminosae, Solanaceae, Chenopodiaceae, Aizoaceae and Pedaliaceae; Phaseolus vulgaris was a good local lesion host. PGMV remained infective in buffered groundnut leaf sap at dilutions of 10-3 after 3 to 4 days at 25 °C, or heating for 10 min to 55 °C but not 60 °C. PGMV was transmitted in the non-persistent manner by Aphis gossypii and Myzus persicae but was not seed-borne. Purified virus preparations contained flexuous filamentous particles c. 750 nm long which sedimented as a single component with a sedimentation coefficient (S°20w) of 171S, and contained a single polypeptide (mol. wt 34 500 daltons) and one nucleic acid species (mol. wt 3.25 × 106 daltons). PGMV is serologically unrelated to peanut mottle virus (PMV) and other viruses infecting leguminous crops. Infected leaves contained cylindrical, cytoplasmic inclusions. |
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