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Management of geminiviruses is a worldwide challenge because of the widespread distribution of economically important diseases caused by these viruses. Regardless of the type of agriculture, management is most effective with an integrated pest management (IPM) approach that involves measures befo...


Rojas, M.R.Macedo, M.A.Maliano, M.R.Soto-Aguilar, M.Souza, J.O.Briddon, R.W.Kenyon, L.Bustamante, R.F.R.Zerbini, F.M.Adkins, S.Legg, J.P.Kvarnheden, A.Wintermantel, William M.Sudarshana, M.R.Peterschmitt, M.Lapidot, M.Martin, D.P.Moriones, E.Inoue-Nagata, A.K.Gilbertson, R.L.[World management of geminiviruses]World management of geminiviruses

Mulimbi, W.Phemba, X.Assumani, B.Kasereka, P.Muyisa, S.Ugentho, H.Reeder, R.Legg, J.P.Laurenson, L.Weekes, R.Thom, F.E.F.[First report of Ugandan cassava brown streak virus on cassava in Democratic Republic of Congo]First report of Ugandan cassava brown streak virus on cassava in Democratic Republic of Congo

Cassava mosaic begomoviruses (CMBs) cause cassava mosaic disease (CMD) across Africa and the Indian subcontinent. Like all members of the geminivirus family, CMBs have small, circular single-stranded DNA genomes. We report here the discovery of two novel DNA sequences, designated SEGS-1 and SEGS-...

Cassava mosaic begomoviruses (CMBs) cause cassava mosaic disease (CMD) across Africa and the Indian subcontinent. Like all members of the geminivirus family, CMBs have small, circular single-stranded DNA genomes. We report here the discovery of two novel DNA sequences, designated SEGS-1 and SEGS-...


Ndunguru, JosephLeón, Leandro deDoyle, Catherine D.Sseruwagi, PeterPlata, GermanLegg, J.P.Thompson, GrahamTohme, Joseph M.Aveling, TheresaAscencio Ibáñez, Jose T.Hanley Bowdoin, Linda[Two Novel DNAs that enhance symptoms and overcome CMD2 resistance to cassava mosaic disease]Two Novel DNAs that enhance symptoms and overcome CMD2 resistance to cassava mosaic disease

Cassava 'brown streak' disease (CBSD) is an economically important constraint in important cassava-growing areas of East, Central and Southern Africa. In addition to causing a dry necrotic rot in the tuberous roots of infected plants, which can render them inedible, CBSD depresses yields through ...


Legg, J.P.Kumar, P.L.Kanju, E.[Cassava brown streak]Cassava brown streak

Cassava brown streak disease (CBSD) is arguably the most dangerous current threat to cassava, which is Africa's most important food security crop. CBSD is caused by two RNA viruses: Cassava brown streak virus (CBSV) and Ugandan cassava brown streak virus (UCBSV). The roles of the whitefly Bemisia...


Maruthi, M.N.Jeremiah, S.C.Mohammed, I.U.Legg, J.P.[The role of the whitefly, Bemisia tabaci (Gennadius), and farmer practices in the spread of cassava brown streak ipomoviruses]The role of the whitefly, Bemisia tabaci (Gennadius), and farmer practices in the spread of cassava brown streak ipomoviruses

The Ipomovirus genus in the family Potyviridae contains five species: Sweet potato mild mottle virus (SPMMV), Squash vein yellowing virus (SqVYV), Cucumber vein yellowing virus (CVYV), Cassava brown streak virus (CBSV), and Ugandan cassava brown streak virus (UCBSV). Sequencing and analysis of To...


Webb, S.E.Adkins, S.Maruthi, M.N.Legg, J.P.[Ipomoviruses]Ipomoviruses

Cassava mosaic disease (CMD) seriously affects cassava yields in Africa. This study compared the spatial distribution of CMD using three independent surveys in Rwanda and Burundi. Geostatistical techniques were used to interpolate the pointbased surveys and predict the spatial distributions of di...


Bouwmeester, H.J.Heuvelink, Gerard B.M.Legg, J.P.Stoorvogel, J.J.[Comparison of disease patterns assessed by three independent surveys of cassava mosaic virus disease in Rwanda and Burundi]Comparison of disease patterns assessed by three independent surveys of cassava mosaic virus disease in Rwanda and Burundi

Cassava is a vital crop in Africa and represents the main food crop in Central African Republic (CAR). CAR has recently faced large reductions in cassava yields that have led to a surge in market prices. To better understand the causes of the reduction in yield, we identified biotic constraints t...


Zinga, I.Chiroleu, F.Legg, J.P.Lefeuvre, P.Komba, E.Semballa, S.Yandia, S.P.Mandakombo, N.Reynaud, B.Lett, J.[Epidemiological assessment of cassava mosaic disease in Central African Republic reveals the importance of mixed viral infection and poor health of plant cuttings]Epidemiological assessment of cassava mosaic disease in Central African Republic reveals the importance of mixed viral infection and poor health of plant cuttings

Hernández Nopsa, J.F.Xing, Y.Andrade-Piedra, J.L.Beed, Fen D.Blomme, GuyCarvajal Yepes, MónicaCoyne, D.L.Forbes, G.Kreuze, J.F.Kroschel, J.Kumar, L.Legg, J.P.Parker, M.Schulte-Geldermann, ElmarGarrett, K.A.[Invasion and saturation risk of pathogens and pests based on global cropland connectivity: the case of banana, cassava, potato, sweet potato, and yam]Invasion and saturation risk of pathogens and pests based on global cropland connectivity: the case of banana, cassava, potato, sweet potato, and yam

Biotic constraints cause major crop losses and, hence, food insecurity in sub-Saharan Africa. This study documented the popularity, production constraints, pests and diseases, farmers’ perceptions on the severity of biotic constraints and the impact of related crop losses on household food securi...


Okonya, J.Ocimati, W.Nduwayezu, A.Kantungeko, D.Niko, N.Blomme, GuyLegg, J.P.Kroschel, J.[Farmer reported pest and disease impacts on root, tuber, and banana crops and livelihoods in Rwanda and Burundi.]Farmer reported pest and disease impacts on root, tuber, and banana crops and livelihoods in Rwanda and Burundi.

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