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What you need to know about Tropical Race 4

TR4 Global Network - An initiative of the World Banana Forum










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    Project
    Building Regional Surveillance, Prevention and Management Capacities to Combat the Possible Spread of Fusarium Wilt Caused by Fusariumoxysporumf.sp.cubense Tropical Race 4 Fungus (FOC TR4) - TCP/RLA/3724 2022
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    Bananas are the world's fourth most important staple food and an important consumption and export item in RLC, a region that is home to six of the world's top ten exporters and three of the world's top producers Banana Fusarium Wilt, caused by the fungus Fusarium oxysporum f sp cubense Foc is one of the most destructive banana and plantain diseases worldwide and a serious threat to the RLC region Tropical Race 4 Foc TR 4 has caused severe losses in southeast Asian countries with serious repercussions for smallholders, workers and the banana value chain It is estimated that without consistent and coordinated action between and among countries, this pest could affect more than 1 6 million ha by 2040 The Foc TR 4 can be spread by infested plant materials, spores and soil particles attached to agricultural tools, shoes, vehicles and other means Irrigation and water drainage, particularly flooding, plays a critical role in its spread Controlling its spread requires the strengthening of country prevention and surveillance systems, but also a commitment to international coordination in order to develop and implement collective protection strategies There is therefore a need to i formulate a regional action plan for Foc TR 4 prevention, surveillance and eventual response ii) develop and adopt national action plans for Foc TR 4 response, surveillance and prevention and iii) build capacities to contribute to Foc TR 4 prevention, response and surveillance, as essential elements for ownership and sustainability of all these actions.
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    Brochure, flyer, fact-sheet
    Preventing the spread and introduction of Banana Fusarium Tropical race 4 (TR4)
    TR4 Global Network - An initiative of the World Banana Forum
    2020
    Preventing the spread and introduction of Banana Fusarium Tropical race 4 (TR4) disease is a summary of a more extensive guide for travellers, targeting occasional and regular travellers to or from banana and plantain production areas. The quick guide aims to raise awareness and provide direction on preventing the spread of the highly virulent pathogen known as Tropical Race 4 (TR4. The document opens with a brief historical background on the banana fusarium wilt disease that have affected banana and plantain plants over several decades. Today, TR4 threatens almost all banana and plantain producers, posing the greatest risks to countries producing Cavendish bananas in monoculture plantations in Asia, Australia, Africa, the Near East, Latin America and the Caribbean. Once established in a banana or plantain plantation, the fungus can survive in the soil and in alternative host plants for decades. Finally, the quick guide offers recommendations: for regular and occasional travellers and local or international visitors; for farmers, professionals, technicians and employees visiting disease-free banana and plantain farms in areas where TR4 infestation has been recorded; and additional recommendations for visiting farms infested with TR4 for obligatory and work-related reasons.
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    Brochure, flyer, fact-sheet
    Ce que vous devez savoir sur la Race tropical 4
    Réseau mondial sur la TR4. Une initiative du Forum mondial de la banane
    2020
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    Le dépliant intitulé Ce que vous devez savoir sur la Race tropical 4 vise à informer le grand public en lui fournissant des informations de base sur la souche tropicale 4 (TR4). Le message sous-jacent est que des mesures peuvent effectivement être prises pour aider à prévenir la propagation du champignon et que les parties prenantes de l'ensemble du secteur de la banane agissent de toute urgence et de manière concertée. Le Fusarium souche tropicale 4 (TR4) est une souche du champignon du sol, Fusarium oxysporum f. sp cubense dont les spores peuvent rester en dormance dans le sol jusqu'à ce qu'une plante sensible soit à proximité. Ces spores infectent la plante par les racines et occupent les vaisseaux du xylème du bananier ou du bananier plantain, bloquant la circulation de l'eau et des nutriments. Les fongicides ne peuvent pas sauver les plantes déjà infectées par le TR4, et les spores du champignon persistent dans le sol pendant des décennies. Par conséquent, l'approche la plus immédiate pour lutter contre le TR4 est la prévention de sa propagation dans les zones indemnes et le confinement lorsqu'il est détecté. À long terme, la diversification des cultures et une meilleure utilisation des ressources génétiques disponibles sont essentielles pour renforcer la résistance à la maladie. Les innovations agroécologiques seront de plus en plus importantes pour produire des variétés moins sensibles au TR4.

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