Yoboué Aya Ange Naté, Kouakou Bekanvié S M, Pita Justin S, N'Zué Boni, Amoakon William J-L, Kouassi Kan Modeste, Vanié-Léabo Linda Patricia L, Kouassi Nazaire K, Sorho Fatogoma, Zouzou Michel
UPR de Physiologie et Pathologie Végétales, Laboratoire de Biotechnologie, Agriculture et Valorisation des Ressources Biologiques, UFR Biosciences, Université Félix Houphouët-Boigny (UFHB), Abidjan, Côte d'Ivoire.
The Regional Center of Excellence, Central and West African Virus Epidemiology (WAVE) for Transboundary Plant Pathogens, Pôle Scientifique et d'Innovation, Bingerville, Université Félix Houphouët-Boigny (UFHB), Abidjan, Côte d'Ivoire.
Front Plant Sci. 2025 Feb 26;16:1448189. doi: 10.3389/fpls.2025.1448189. eCollection 2025.
Cassava ( Crantz) plays a significant role in the livelihoods of people in Africa, particularly in Côte d'Ivoire. However, its production is threatened by begomoviruses which cause huge yield losses. Some weeds and food crops intercropped with cassava act as reservoirs, thereby facilitating the sustenance and propagation of Cassava mosaic begomoviruses (CMBs), along with other begomoviruses. To effectively manage these diseases, it is imperative to enhance our understanding of the various hosts of cassava viruses in Côte d'Ivoire. Thus, a comprehensive nationwide survey was conducted in 2017 in cassava fields across Côte d'Ivoire, and molecular analyses were performed on the samples collected. The results obtained from this survey indicated that 65 plant species belonging to 31 families were potential alternative hosts for CMBs in Côte d'Ivoire. The molecular analyses revealed that four species, , , , and exhibited differential affinities for both African cassava mosaic virus and East African cassava mosaic Cameroon virus. Additionally, other begomoviruses and new alphasatellites were identified. Soybean chlorotic blotch virus was isolated from while West African Asystasia virus 1, West African Asystasia virus 2, and a new Asystasia yellow mosaic alphasatellite were isolated from which appears to be a plant species that could favor the emergence of new viral species harmful to cassava cultivation. This study offers insights that will inform the development of more effective control methods for sustainable cassava production in Côte d'Ivoire.
木薯（Crantz）在非洲人民的生计中发挥着重要作用，尤其是在科特迪瓦。然而，其产量受到菜豆金色花叶病毒属病毒的威胁，这些病毒会导致巨大的产量损失。一些与木薯间作的杂草和粮食作物充当了病毒宿主，从而促进了木薯花叶菜豆金色花叶病毒（CMB）以及其他菜豆金色花叶病毒的存活和传播。为了有效管理这些病害，必须加强我们对科特迪瓦木薯病毒各种宿主的了解。因此，2017年在科特迪瓦全国范围内对木薯田进行了全面调查，并对采集的样本进行了分子分析。本次调查结果表明，科特迪瓦31个科的65种植物可能是CMB的替代宿主。分子分析显示，四种植物，即[此处原文缺失植物名称]、[此处原文缺失植物名称]、[此处原文缺失植物名称]和[此处原文缺失植物名称]，对非洲木薯花叶病毒和东非木薯花叶喀麦隆病毒均表现出不同的亲和力。此外，还鉴定出了其他菜豆金色花叶病毒和新的α卫星病毒。从[此处原文缺失植物名称]中分离出了大豆褪绿斑点病毒，而从[此处原文缺失植物名称]中分离出了西非赤苞花病毒1、西非赤苞花病毒2和一种新的赤苞花黄色花叶α卫星病毒，[此处原文缺失植物名称]似乎是一种可能有利于对木薯种植有害的新病毒种类出现的植物。这项研究提供了相关见解，将为科特迪瓦可持续木薯生产开发更有效的控制方法提供参考。
