• MLN Screening facility, Naivasha, Kenya - 2016
  • MLN Screening facility, Naivasha, Kenya -2019
  • IMIC Partners participating in MLN field day - 2019
  • Global Leadership team - Limagrain seeds company visiting MLN screening facility - 2019
  • Dr.BÄNZIGER, Marianne and the team visit to MLN Screening facility, Naivasha, Kenya
  • MLN Diagnostics & Mgt and MLN Epidemiology projects meeting, Nairobi, Kenya -2019
  • EAC-CIMMYT meeting on MLN in Nairobi, Kenya, 2018

Latest Updates

  • How a disease without borders was contained

    Experts reflect on the successful efforts to limit the spread of maize lethal necrosis across eastern and southern Africa. By Joshua Masinde November 25, 2019 It’s been eight years since maize lethal necrosis (MLN) was first reported on the African continent. When it appeared in Kenya’s Bomet County in 2011, a sense of panic swept across the maize sector. Experts quickly realized that all maize varieties on the market were susceptible to this viral disease, which could wipe out entire maize fields. Dr.-Suresh-L-M-helping-NARS-partners-to-undergo-training-on-disease-diagnosis-using-immunostrip-in-Ambo-PC-Yasabu-Simret-CIMMYT Spearheaded by the International Maize and Wheat Improvement Center (CIMMYT), a rapid regional response involving national agriculture research systems (NARS), national plant protection organizations and seed sector partners was set up. The response involved multiple approaches: rigorous surveillance, epidemiology research, disease management across the seed value chain, and screening and fast-tracking of the MLN-tolerant maize breeding program. Now, CIMMYT and its partners are reflecting on the tremendous impact of transboundary ...

  • Refresher training course on MLN Diagnosis at - Dar es Salaam, Tanzania

    Francis Mwatuni: Tanzania is an important country in his project and largely depends on Maize as a food crop. Due to its geographical position, Tanzania acts as a bridge in the MLN spread to countries in southern Africa where maize is a staple food crop. Tanzania has not had a comprehensive MLN surveillance to determine the status of the disease since the inception of the MLN Diagnostics and Management Project in Oct 2015.  The training was done on 6th February 2017 at the Plant Health Services offices in Dar es Salaam, Tanzania. A total of 13 MLN surveillance team members were trained of which 8 were males and 5 females were trained. However, since the team did not carry out the activity in 2017 as planned due to internal logistical issued, they requested for the refresher training which was executed in late March this year. Figure 1. Refresher training on MLN ...

  • Rwanda MLN Surveillance team training on MLN field and seed surveillance using appropriate surveillance and diagnostics tools, 24th May 2019 at Musanze Rwanda

    Dr. Suresh,L.M. and Francis Mwatuni : The National Plant Protection Organization of Rwanda in the Rwanda Agricultural Board(RAB) under the guidance of the Rwanda MLN Taskforce organized a second Training on Diagnostics and surveillance on 24th May 2019 at Musanze. The first training was done in the same venue on 12th June of 2018. A total of 42 participants attended the training of which 15 were females while 27 were males. These trainees were extension officers, researchers, seed certification officers, and seed production officers form several seed companies in Rwanda. Figure 1. Group photo of the trainees, Musanze Rwanda Training content included; Use of the ODK MLN Survey tool and the digital surveillance protocolField surveys and sampling techniquesSample preparation and testing using the MCMV immunostripsStorage of samples and shipment for confirmatory lab tests Anne Wangui is helping trainees to diagnose MCMV using immunostrip Trainees collecting the leaf samples for MCMV diagnosis This training equipped the trainees ...

  • CIMMYT Scientists presenting progress on MLN at 14th International Plant Viruses Epidemiology (PVE) Symposium, Seoul Korea ( 13th – 17th May 2019)

    Delegates participating in technical session during the International conference Dr. Suresh,L.M. and Francis Mwatuni : The IPVE2019 symposium had a total of 123 participants from 33 countries. The symposium consisted of 12 important keynote speeches, 53 oral presentations, and 60 poster presentations. This year’s IPVE symposium lectures and presentation provided very valuable research information regarding recent plant virus epidemiology from all corners of the world. Dr. Suresh, L.M. presented on the topic "Tackling Maize Lethal Necrosis (MLN), a complex disease in Eastern Africa" Abstract : Maize (Zea mays L.) is the most important cereal crop in sub-Saharan Africa (SSA), covering over 35 million ha, largely in smallholder farming systems that produce over 70 million metric tons (MMT) of grain. Maize Lethal Necrosis (MLN) disease first appeared in Kenya in 2011, and became a major threat to maize production in eastern Africa in subsequent years. In eastern Africa, MLN is caused mainly by synergistic ...

  • Disease without borders: what we learnt from our fight against Maize Lethal Necrosis (MLN)

    Masinde, Joshua (CIMMYT), Francis Mwatuni (CIMMYT) and Dr. Suresh,L.M. (CIMMYT ) : Experts from research, plant health and seed sector organizations from eastern and southern Africa gathered in Nairobi on October 15-17, 2019, to reflect on the tremendous impact and lessons learned from the multi-pronged, transboundary coalition to contain the maize lethal necrosis (MLN) disease across the region. They called for continued efforts to fight this devastating viral disease and prepare African nations for future plant health threats. It’s eight years since the maize lethal necrosis (MLN) disease was first reported on the African continent, in Kenya’s Bomet County in 2011. At the time, a sense of panic swept across the maize sector as this viral disease could wipe out maize fields with experts quickly realizing that all maize varieties on the market were susceptible to MLN. Spearheaded by the International Maize and Wheat Improvement Center (CIMMYT), a rapid regional response involving national ...

  • Screening cycle for deadly MLN virus set to begin in Kenya during January 2020

    By Dr. Suresh,L.M. : The maize lethal necrosis (MLN) artificial inoculation screening site in Naivasha, Kenya will begin its phenotyping (screening/ indexing) cycle of 2020 at the begining of January, 2020 and in other four intervals, interested organizations from both the private and public sectors are invited to send maize germplasm for screening. In 2013, the International Maize and Wheat Improvement Center (CIMMYT) and the Kenya Agricultural & Livestock Research Organization (KALRO) jointly established the MLN screening facility at the KALRO Naivasha research station in Kenya’s Rift Valley with support from the Bill & Melinda Gates Foundation and the Syngenta Foundation for Sustainable Agriculture. MLN was first discovered in Kenya in 2011 and quickly spread to other parts of eastern Africa; the disease causes premature plant death and unfilled, poorly formed maize cobs, and can lead to up to 100 percent yield loss in farmers’ fields. CIMMYT and partners are dedicated to stopping the spread of this deadly maize disease by ...