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Yam leaves were collected during surveys of major yam producing agro-ecological zones (AEZs) in Ghana (n = 628) and Togo (n = 218) respectively, in 2005. Leaf tissues were tested for Cucumber mosaic virus (CMV), Dioscorea mottle virus (DMoV), Yam mild mosaic virus (YMMV), Yam mosaic virus (YMV) a...


Eni, A.O.Hughes, Jacqueline d'ArrosAsiedu, RobertRey, M.E.C.[Survey of the incidence and distribution of viruses infecting yam (Dioscorea spp.) in Ghana and Togo]Survey of the incidence and distribution of viruses infecting yam (Dioscorea spp.) in Ghana and Togo

Surveys were conducted in 2004 and 2005 to determine the incidence and distribution of viruses infecting yams in fourmajor yam-producing agro-ecological zones in Benin. Yam leaves collected from 69 fields and one experimental screen house were indexed for Cucumber mosaic virus (CMV), Dioscorea mo...


Eni, A.O.Hughes, Jacqueline d'ArrosRey, M.E.C.[Survey of the incidence and distribution of five viruses infecting yams in the major yam producing zones in Benin]Survey of the incidence and distribution of five viruses infecting yams in the major yam producing zones in Benin

A Nigerian isolate of Yam mosaic virus (YMV), genus Potyvirus from Dioscorea rotundata leaves was used to mechanically inoculate Nicotiana benthamiana (propagation host) plants from which the virus was purified. A hybridoma cell line secreting a monoclonal antibody (Mab) against YMV was produced ...


Njukeng, A.P.Ariri, G.I.Hughes, Jacqueline d'ArrosAgindoran, B.O.Mignouna, H.D.Thottappilly, G.[A sensitive TAS-ELISA for the detection of some West African isolates of yam mosaic virus in Dioscorea spp.]A sensitive TAS-ELISA for the detection of some West African isolates of yam mosaic virus in Dioscorea spp.

Cassava mosaic disease (CMD) caused by African cassava mosaic virus (ACMV) and East African cassava mosaic Cameroon virus (EACMCV) is the major constraint to cassava production in Nigeria. Sequences of the DNA-A component of ACMV and EACMCV isolates from leguminous plant species (Senna occidental...


Alabi, O.J.Ogbe, F.O.Bandyopadhyay, RanajitKumar, P.L.Dixon, Alfred G.O.Hughes, Jacqueline d'ArrosNaidu, R.A.[Alternate hosts of African cassava mosaic virus and East African cassava mosaic Cameroon virus in Nigeria]Alternate hosts of African cassava mosaic virus and East African cassava mosaic Cameroon virus in Nigeria

A virus, 750 /I > 18 nm, was isolated from Centrosema pubescens from Nigeria, causing leaf malformation, mosaic and mottling on the plant. When inoculated on to various test plants, it failed to produce necrotic or chlorotic lesions on Chenopodium amaranticolor, but symptoms of mottling were obs...


Odedara, O.O.Hughes, Jacqueline d'ArrosTarawali, Shirley A.Odebode, A.C.Winter, S.[Characterisation of a potyvirus from Centrosema pubescens Benth]Characterisation of a potyvirus from Centrosema pubescens Benth

Virus diseases of herbaceous legumes have been relatively little studied even though the legumes play an important role in the maintenance of soil fertility and pest/disease management as well as providing fodder in sub-Saharan Africa. Leaf samples exhibiting virus-like symptoms from nine herbace...


Hughes, Jacqueline d'ArrosTarawali, Shirley A.[Viruses of herbacious legumes in the moist savannah of West Africa]Viruses of herbacious legumes in the moist savannah of West Africa

Streak disease of banana and plantain caused by banana streak virus (BSV) was first reported in the Ivory Coast in 1974 and occurs in at least 16 countries in Africa. Based on genomic characteristics, BSV has been shown to be a member of genus Badnavirus. Efficient and reliable diagnostic methods...


Dahal, G.Hughes, Jacqueline d'ArrosLockhart, B.E.L.[Status of banana streak disease in Africa: problems and future research needs]Status of banana streak disease in Africa: problems and future research needs

The study was conducted to determine whether likely global climatic uncertainty in the future will pose substantive risk to small-scale vegetable producers in Africa, and to consider whether climate change threatens the development and sustainability of improved vegetable horticultural systems in...


Keatinge, J.D.H.Ledesma, D.R.Hughes, Jacqueline d'ArrosKeatinge, Fergus J.D.Hauser, S.Traoré, P.C.S.[How future climatic uncertainty and biotic stressors might influence the sustainability of African vegetable production]How future climatic uncertainty and biotic stressors might influence the sustainability of African vegetable production

Wassmann, ReinerSander, Bjoern OleYadav, SudhirBouman, BasSingleton, GrantStuart, AlexanderHellin, JonathanJohnson, DavidHughes, Jacqueline d'ArrosButterbach-Bahl, KlausKiese, RalfKraus, DavidJanz, BaldurLinquist, BruceGaihre, Yam KantaChirinda, NgonidzasheWollenberg, Eva K.[New records of very high nitrous oxide fluxes from rice cannot be generalized for water management and climate impacts]New records of very high nitrous oxide fluxes from rice cannot be generalized for water management and climate impacts

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