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Journal Article 2017-11-01

Autor: Wosula, Everlyne N. Chen, W. Fei, Z. Legg, J.P.

Bemisia tabaci threatens production of cassava in Africa through vectoring viruses that cause cassava mosaic disease (CMD) and cassava brown streak disease (CBSD). B. tabaci sampled from cassava in eight countries in Africa were genotyped using NextRAD sequencing, and their phylogeny and populati...

Enlace original: https://cgspace.cgiar.org/handle/10568/89949

Investigación en Agricultura
DNA
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Wosula, Everlyne N. ,  Chen, W. ,  Fei, Z. ,  Legg, J.P. ,  [Unravelling the genetic diversity among cassava Bemisia tabaci whiteflies using NextRAD Sequencing] ,  Unravelling the genetic diversity among cassava Bemisia tabaci whiteflies using NextRAD Sequencing
Journal Article 2017

Autor: Boni, S.B. Rugumamu, C.P. Gerling, D. Nokoe, K.S. Legg, J.P.

The sweetpotato whitefly, Bemisia tabaci (Gennadius) is the vector of the cassava mosaic geminiviruses (CMGs) that cause cassava mosaic disease (CMD). Synergistic interactions between B. tabaci and CMGs have been hypothesized as a cause of whitefly “super-abundance,” which has been a key factor b...

Enlace original: https://cgspace.cgiar.org/handle/10568/88248

Investigación en Agricultura
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Boni, S.B. ,  Rugumamu, C.P. ,  Gerling, D. ,  Nokoe, K.S. ,  Legg, J.P. ,  [Interactions Between Cassava Mosaic Geminiviruses and Their Vector, Bemisia tabaci (Hemiptera: Aleyrodidae)] ,  Interactions Between Cassava Mosaic Geminiviruses and Their Vector, Bemisia tabaci (Hemiptera: Aleyrodidae)
Journal Article 1998

Autor: Legg, J.P. Raya, M.

A survey was carried out of African cassava mosaic geminivirus and cassava brown streak virus diseases (ACMD and CBSD) in Tanzania. ACMD occurred throughout the country at low to moderate incidences in the fifteen different regions surveyed (1- 64%). The incidence was generally higher along the c...

Enlace original: https://cgspace.cgiar.org/handle/10568/96058

Investigación en Agricultura
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Legg, J.P. ,  Raya, M. ,  [Survey of cassava virus diseases in Tanzania] ,  Survey of cassava virus diseases in Tanzania
Journal Article 2019-06

Autor: Carvajal-Yepes, M. Cardwell, K. Nelson, A. Garrett, K.A. Giovani, B. Saunders, D.G.O. Kamoun, S. Legg, J.P. Verdier, Valérie Lessel, J. Neher, R.A. Day, R. Pardey, P. Gullino, M.L. Records, A.R. Bextine, B. Leach, J.E. Staiger, S. Tohme, Joseph M.

To satisfy a growing demand for food, global agricultural production must increase by 70% by 2050. However, pests and crop diseases put global food supplies at risk. Worldwide, yield losses caused by pests and diseases are estimated to average 21.5% in wheat, 30.0% in rice, 22.6% in maize, 17.2% ...

Enlace original: https://cgspace.cgiar.org/handle/10568/102422

Investigación en Agricultura
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Carvajal-Yepes, M. ,  Cardwell, K. ,  Nelson, A. ,  Garrett, K.A. ,  Giovani, B. ,  Saunders, D.G.O. ,  Kamoun, S. ,  Legg, J.P. ,  Verdier, Valérie ,  Lessel, J. ,  Neher, R.A. ,  Day, R. ,  Pardey, P. ,  Gullino, M.L. ,  Records, A.R. ,  Bextine, B. ,  Leach, J.E. ,  Staiger, S. ,  Tohme, Joseph M. ,  [A global surveillance system for crop diseases: global preparedness minimizes the risk to food supplies] ,  A global surveillance system for crop diseases: global preparedness minimizes the risk to food supplies
Journal Article 2003

Autor: Dixon, Alfred G.O. Bandyopadhyay, Ranajit Coyne, D.L. Ferguson, M. Ferris, R.S.B. Hanna, R. Hughes, J. Ingelbrecht, I. Legg, J.P. Mahungu, N.M. Manyong, Victor M. Mowbray, D. Neuenschwander, P. Whyte, J. Hartmann, P. Ortiz, R.

Cassava(Manihot esculenta), a root crop originating in Tropical America, has been called Africa’s food insurance but vital as that is, it has the potential to be much more. Already, cassava provides more than half of the dietary calories for over 200 million people in sub-Saharan Africa (about ha...

Enlace original: https://cgspace.cgiar.org/handle/10568/96342

Investigación en Agricultura
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Dixon, Alfred G.O. ,  Bandyopadhyay, Ranajit ,  Coyne, D.L. ,  Ferguson, M. ,  Ferris, R.S.B. ,  Hanna, R. ,  Hughes, J. ,  Ingelbrecht, I. ,  Legg, J.P. ,  Mahungu, N.M. ,  Manyong, Victor M. ,  Mowbray, D. ,  Neuenschwander, P. ,  Whyte, J. ,  Hartmann, P. ,  Ortiz, R. ,  [Cassava: from poor farmers crop to pacesetter of African rural development] ,  Cassava: from poor farmers crop to pacesetter of African rural development
Journal Article 2004-11

Autor: Legg, J.P. Fauquet, Claude M.

Cassava mosaic disease (CMD) caused by cassava mosaic geminiviruses (CMGs) (Geminiviridae:Begomovirus) is undoubtedly the most important constraint to the production of cassava in Africa at the outset of the 21st century. Although the disease was recorded for the first time in the latter part of ...

Enlace original: https://cgspace.cgiar.org/handle/10568/96414

Investigación en Agricultura
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Legg, J.P. ,  Fauquet, Claude M. ,  [Cassava mosaic geminiviruses in Africa] ,  Cassava mosaic geminiviruses in Africa
Journal Article 2017

Autor: Legg, J.P. Ndalahwa, M. Yabeja, J. Ndyetabula, I. Bouwmeester, H.J. Shirima, R. Mtunda, K.

Cassava viruses are the major biotic constraint to cassava production in Africa. Community-wide action to manage them has not been attempted since a successful cassava mosaic disease control programme in the 1930s/40 s in Uganda. A pilot initiative to investigate the effectiveness of community ph...

Enlace original: https://cgspace.cgiar.org/handle/10568/88010

Investigación en Agricultura
GIS
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Legg, J.P. ,  Ndalahwa, M. ,  Yabeja, J. ,  Ndyetabula, I. ,  Bouwmeester, H.J. ,  Shirima, R. ,  Mtunda, K. ,  [Community phytosanitation to manage cassava brown streak disease] ,  Community phytosanitation to manage cassava brown streak disease
Journal Article 2015-09-15

Autor: Mulenga, R. Miano, D. Chikoti, Patrick Chiza Ndunguru, J. Legg, J.P. Alabi, O.J.

Cassava mosaic disease (CMD) is a major constraint to sustainable production of cassava (Manihot esculenta Crantz) in Zambia and other sub-Saharan African countries. During a survey conducted between April and May 2014 in six (Western, Northwestern, Northern, Luapula, Lusaka, and Eastern) provinc...

Enlace original: https://cgspace.cgiar.org/handle/10568/76377

Investigación en Agricultura
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Mulenga, R. ,  Miano, D. ,  Chikoti, Patrick Chiza ,  Ndunguru, J. ,  Legg, J.P. ,  Alabi, O.J. ,  [First report of East African cassava mosaic Malawi virus in plants affected by cassava mosaic disease in Zambia] ,  First report of East African cassava mosaic Malawi virus in plants affected by cassava mosaic disease in Zambia
Journal Article 2012-01

Autor: Abarshi, M.M. Mohammed, I. Jeremiah, S.C. Legg, J.P. Kumar, P.L. Hillocks, R.J. Maruthi, M.N.

Uniplex and multiplex reverse transcription-polymerase chain reaction (RT-PCR) protocols were developed for the detection of cassava brown streak viruses (CBSVs) in single and mixed infections with cassava mosaic begomoviruses (CMBs) in a tropical crop plant, cassava (Manihot esculenta). CMBs con...

Enlace original: https://cgspace.cgiar.org/handle/10568/77415

Investigación en Agricultura
RNA
DNA
Enlace permanente
Abarshi, M.M. ,  Mohammed, I. ,  Jeremiah, S.C. ,  Legg, J.P. ,  Kumar, P.L. ,  Hillocks, R.J. ,  Maruthi, M.N. ,  [Multiplex RTPCR assays for the simultaneous detection of both RNA and DNA viruses infecting cassava and the common occurrence of mixed infections by two cassava brown streak viruses in East Africa] ,  Multiplex RTPCR assays for the simultaneous detection of both RNA and DNA viruses infecting cassava and the common occurrence of mixed infections by two cassava brown streak viruses in East Africa
Journal Article 2014

Autor: Lapidot, M. Legg, J.P. Wintermantel, William M. Polston, J.E.

Whiteflies are a key pest of crops in open-field production throughout the tropics andsubtropics. This is due in large part to the long and diverse list of devastating plantviruses transmitted by these vectors. Open-field production provides many challengesto manage these viruses and in many case...

Enlace original: https://cgspace.cgiar.org/handle/10568/76099

Investigación en Agricultura
Enlace permanente
Lapidot, M. ,  Legg, J.P. ,  Wintermantel, William M. ,  Polston, J.E. ,  [Management of whitefly transmitted viruses in openfield production systems] ,  Management of whitefly transmitted viruses in openfield production systems

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