A new virus infecting peanut
Unusual symptoms of chlorotic ringspot, chlorotic line pattern and mottling on an Erictoides hybrid found in a germplasm collection of USDA in Oklahoma led to the identification of a new virus of peanut (Arachis hypogaea) called peanut chlorotic ringspot virus (PCRV). The virus was isolated, characterized and found different from other peanut viruses such as peanut mottle potyvirus, peanut stunt cucumovirus, tomato spotted wilt tospovirus, peanut stripe potyvirus. The virus was mecanically transmitted to fourteen peanut cultivars causing identical symptoms to those originally observed on the Erictoides hybrid. The virus can also systemically infect pea (Pisum sativum cv. Little Marvel), bean (Phaseolus vulgaris cv. Topcrop) and lupin (Lupinus albus cv. Tiftwhite) where it respectively causes mosaic and very few chlorotic rings; necrotic local lesions; severe malformation and remarkable reduction in leaflet area. In these experiments, it was found that the virus did not infect Vigna unguiculata (cowpea) and Glycine max (soybean). In electronic microscopy, peanut chlorotic ringspot virus appeared as long flexible filamentous particles ranging in length from 750-850 nm.
Sources
Wagih, E.E.; Melouk, H.A., Sherwood, J.L. (1994) Peanut chlorotic ringspot virus (PCRV), a newly discovered virus infecting peanut (Arachis hypogaea).
Journal of Phytopathology, 140 (2), 133-144.