A5072242671- Plant Virus Research Studies
- Plant Parasitism and Resistance
- Insect-Plant Interactions and Control
- Agricultural pest management studies
- Plant and animal studies
- Plant Disease Resistance and Genetics
- Cassava research and cyanide
- Banana Cultivation and Research
- Nematode management and characterization studies
- Plant Pathogenic Bacteria Studies
- Plant nutrient uptake and metabolism
- Mosquito-borne diseases and control
- Plant and Fungal Species Descriptions
- Plant Molecular Biology Research
- Legume Nitrogen Fixing Symbiosis
- Agronomic Practices and Intercropping Systems
- Nitrogen and Sulfur Effects on Brassica
- Plant pathogens and resistance mechanisms
- Plant responses to water stress
- Chromosomal and Genetic Variations
- Postharvest Quality and Shelf Life Management
- Cocoa and Sweet Potato Agronomy
- Agricultural Innovations and Practices
- Insect symbiosis and bacterial influences
- Genomics and Phylogenetic Studies
Université Félix Houphouët-Boigny
2020-2024
University of Cambridge
2018-2021
International Livestock Research Institute
2017-2021
RIKEN Center for Sustainable Resource Science
2013-2019
Saga University
2010-2012
The genus Striga comprises about 30 obligate root-parasitic plants, commonly known as witchweeds. In particular, S. hermonthica, asiatica and gesnerioides cause immense losses to major stable crops in sub-Saharan Africa. Most species parasitize grass (Poaceae), but has evolved dicotyledonous plants. Aspects of phylogeny, economic impact, parasitic life style molecular discoveries are briefly reviewed profile one the main biotic constraints African agriculture.Striga Lour.; Kingdom Plant;...
Striga species are parasitic weeds that seriously constrain the productivity of food staples, including cereals and legumes, in Sub-Saharan Africa Asia. In eastern central Africa, spp. infest as much 40 million hectares smallholder farmland causing total crop failure during severe infestation. As molecular mechanisms underlying resistance yet to be elucidated, we undertook a comparative metabolome study using Striga-resistant rice (Oryza sativa) cultivar 'Nipponbare' susceptible...
Cassava mosaic disease (CMD) and cassava brown streak (CBSD) are endemic threats to production, causing significant yield losses. They caused respectively by begomoviruses ipomoviruses that transmitted whiteflies infected cuttings. This study aimed monitor characterize viruses responsible for these diseases in order fill existing gaps understanding their epidemiology Côte d’Ivoire. Field surveys were conducted 2016, 2017, 2020, no CBSD symptoms observed. However, an increase CMD incidence...
Rhizoctonia solani Kuhn causes sheath blight disease in rice, and genetic resistance against it is the most desirable characteristic. Current improvement efforts are based on analysis of polygenic quantitative trait loci (QTLs), but interpretation limited by lack information changes metabolic pathways. Our previous studies linked activation glycolytic pathway to enhanced generation lignin phenylpropanoid pathway. The current investigated regulation glycolysis examining time course enzymatic...
The root hemiparasite witchweed (Striga spp.) is a devastating agricultural pest that causes losses of up to $1 billion US annually in sub-Saharan Africa. Development resistant crops one the cost-effective ways address this problem. However, molecular mechanisms underlying resistance are not well understood. To understand events upon Striga spp. infection, we conducted genome-scale RNA sequencing expression analysis using hermonthica-infected rice (Oryza sativa) roots. We found transcripts...
Bean common mosaic virus (BCMV), bean necrosis (BCMNV), and cucumber (CMV) cause serious epidemics in (Phaseolus vulgaris), a vital food security crop many low-to-medium income countries, particularly sub-Saharan Africa. Aphids transmit these viruses 'non-persistently' i.e., virions attach loosely to the insects' stylets. Viruses may manipulate aphid-host interactions enhance transmission. We used direct observation electrical penetration graph measurements see if three induced similar or...
Aphids are major vectors of plant viruses. Common bean (Phaseolus vulgaris L.) and maize (Zea mays important crops that vulnerable to aphid herbivory aphid-transmitted In East Central Africa, common is frequently intercropped by smallholder farmers provide fixed nitrogen for cultivation starch such as maize. We used a PCR-based technique identify aphids prevalent in farms next generation sequencing shotgun metagenomics examine the diversity viruses present leaf samples. Samples were...
Two closely related potyviruses, bean common mosaic virus (BCMV) and necrosis (BCMNV), are regarded as major constraints on production of (Phaseolus vulgaris L.) in Eastern Central Africa, where this crop provides a high proportion dietary protein well other nutritional, agronomic, economic benefits. Previous studies using antibody-based assays indicator plants indicated that BCMV BCMNV both prevalent fields the region but these approaches cannot distinguish between potyviruses or detect...
Multiple mycotoxins were tested in milled rice samples (n = 200) from traders at different milling points within the Mwea Irrigation Scheme Kenya. Traders provided names of cultivar, village where paddy was cultivated, sampling locality, miller, and month harvest between 2018 2019. Aflatoxin, citrinin, fumonisin, ochratoxin A, diacetoxyscirpenol, T2, HT2, sterigmatocystin analyzed using ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). Deoxynivalenol...
Surveys were conducted in 2016 and 2017 across the main cassava-growing regions of Burkina Faso to assess status cassava mosaic disease (CMD) determine virus strains causing disease, using field observation phylogenetic analysis. CMD incidence varied between years but was lowest Hauts-Bassins (6.0%, 5.4%, 2017) highest Centre-Sud (18.5%, 2016) Boucle du Mouhoun (51.7%, 2017). The severity found Est region (2.0) for both Sud-Ouest (3.3, (2.8, infection primarily associated with contaminated...
Cassava plays a key role in the food security and economy of Cameroon, but its production is constrained by cassava mosaic disease (CMD). However, comprehensive surveys CMD Cameroon have been lacking. This study aimed at evaluating current status whitefly vector. Field were conducted 2020 using sampling, diagnostics data storage protocol that has harmonized across 10 West Central African countries for ease comparison. Thirty plants per field assessed severity, abundance source infection....
Cassava mosaic disease (CMD) and cassava brown streak (CBSD) are endemic threats to production. To fill the existing gaps in understanding of epidemiology these diseases Côte d’Ivoire, nationwide field surveys were conducted 2016, 2017 2020. The leaf samples collected analysed by PCR. CBSD was not detected all fields visited. However, an increase CMD incidence observed from 45.95% 2016 51.37% 2020 while severity remained moderate over years with a mean value 2.29. Low whiteflies number...
Abstract Striga spp. are obligate root hemiparasites that constrain cereal production in sub-Saharan Africa. Although purple witchweed [ hermonthica (Delile) Benth.] and Asiatic asiatica (L.) Kuntze] infect all crops, maize ( Zea mays L.) is particularly vulnerable to their infestations. A sustainable control strategy for would be breed crops with host-based resistance as part of an integrated management plan. In maize, the open-pollinated variety Kakamega -tolerant population year 1994...
The domestic goat (Capra hircus) is an important livestock species with a geographic range spanning all continents, including arid and semi-arid regions of Africa Asia. Nubian ibex nubiana), wild relative the inhabiting hot deserts Northern Arabian Peninsula, well-adapted to challenging environments in characterized by intense solar radiation, thermal extremes, scarce water resources. economic importance C. hircus breeds, as well current trends global warming, highlights need understand...
Bean common mosaic virus (BCMV), bean necrosis (BCMNV), and cucumber (CMV) are important pathogens of ( Phaseolus vulgaris ), a crop vital for food security in sub-Saharan Africa. These viruses vectored by aphids non-persistently, with virions bound loosely to stylet receptors. also manipulate aphid-mediated transmission altering host properties. Virus-induced effects on host-aphid interactions were investigated using choice test (migration) assays, olfactometry, analysis insect-perceivable...
Cassava adaptation to climate change and its resistance diseases are essential prerequisites for achieving food security in sub-Saharan Africa. The accessions collected from farmers’ fields very important because they can provide new sources of genetic variability that achieve this goal. In study, a panel 184 Burkina Faso was genotyped using 36 single nucleotide polymorphism (SNP) markers. markers presented with more than 6% missing data were removed the dataset remaining 34 166 retained...
Abstract Cassava production in Ivory Coast is hampered by cassava mosaic disease (CMD), which caused several begomovirus species. To increase and conserve genetic resources, the Centre National de Recherche Agronomique (CNRA) maintains a germplasm collection of 610 accessions various origins, kept open fields Bouaké Man. We carried out an epidemiological assessment molecular characterization viruses infecting CNRA germplasm. The field Man was less affected CMD (incidence 49.78%, severity...
Banana is a climacteric fruit whose ripening once initiated irreversible and proceeds very fast making the fruits highly perishable. Application of various post-harvest technologies has been shown to slow down process in such as banana. One these hexanal, naturally occurring compound that delays banana without compromising quality. As molecular mechanisms underlying mode action hexanal delaying are yet be elucidated, we undertook comparative transcriptomic analysis using treated with either...
High-throughput sequence analysis revealed the complete genome of a novel, hitherto uncharacterized strain Chickpea chlorotic dwarf virus (CpCDV) from tomato plants in Kenya. The shared its highest nucleotide similarity (88.7%) with two CpCDV isolates Burkina Faso.