Molecular identification of a new begomovirus associated with mosaic disease of Jatropha curcas L. in Nigeria

Abstract

We report the complete nucleotide sequence of DNA-A of a begomovirus naturally infecting Jatropha curcas L. in Nigeria. Symptoms observed on infected plants were severe mosaic, mottling and blistering of leaves. The virus, which we provisionally name "jatropha mosaic Nigeria virus" (JMNV), has a monopartite genome of 2,779 to 2,789 nucleotides. Pairwise comparisons of DNA-A sequences showed that JMNV had maximum nucleotide sequence identity (72%) with a strain of tomato yellow leaf curl virus. Since there are widespread infections of jatropha in Nigeria showing similar symptoms as those investigated in the present study, JMNV may represent a significant threat to a promising bioenergy crop.

Effects of awareness program for controlling mosaic disease in Jatropha curcas plantations

“…We now reformulate the model (6) to incorporate the effects of awareness programs that is repeatedly performed at time instants separated by constant time intervals. Let us assume that through the action of mass media, the portion of aware population increases by a fixed amount w every time in which the advertisement is made.…”

“…Different population densities of system(6) as a function of time and parameter values are given inTable I,ˇD 0.15 Â D 0.015. [Colour figure can be viewed at wileyonlinelibrary.com] Population densities of system (6) for various growth rate of population motivated through awareness programs.…”

Characterization of a novel begomovirus associated with yellow mosaic disease of three ornamental species of Jatropha grown in India

“…The occurrence of begomoviruses has been noted on J. curcas and J. gossypifolia species worldwide (Aswatha-Narayana et al, 2006Tewari et al, 2007;Raj et al, 2008;Gao et al, 2010;Ramkat et al, 2011a,b;Snehi et al, 2011aSnehi et al, ,b, 2012Appiah et al, 2012;Kashina et al, 2013;Srivastava et al, 2014b). African cassava mosaic virus (syn.…”

The Current Status of New Emerging Begomovirus Diseases on Jatropha Species from India

“…Two strains of African cassava mosaic virus on J. curcas from Kenya were reported [16,17]. Recently mosaic Nigeria virus on J. curcas from Nigeria [18] and Jatropha mosaic virus-[Jamaica: Spanish Town: 2004] on J. gossypifolia [19] reported from Jamaika.…”