A5032978805- Plant Pathogens and Fungal Diseases
- Powdery Mildew Fungal Diseases
- Horticultural and Viticultural Research
- Cocoa and Sweet Potato Agronomy
- Plant-Microbe Interactions and Immunity
- Banana Cultivation and Research
- Plant Pathogens and Resistance
- Plant Parasitism and Resistance
- Cassava research and cyanide
- Plant Pathogenic Bacteria Studies
- Agricultural Innovations and Practices
- Insect Pest Control Strategies
- Natural Antidiabetic Agents Studies
- Phytochemicals and Antioxidant Activities
- Legume Nitrogen Fixing Symbiosis
- Plant Virus Research Studies
- Insect Utilization and Effects
- Plant Growth Enhancement Techniques
- Seed and Plant Biochemistry
- Genomics and Phylogenetic Studies
- Chemical synthesis and alkaloids
- Glycosylation and Glycoproteins Research
- Allelopathy and phytotoxic interactions
- Studies on Chitinases and Chitosanases
- African Botany and Ecology Studies
University of Florida
2023-2025
Plant (United States)
2024
Université de Sherbrooke
2016-2023
Agriculture and Agri-Food Canada
2020-2022
Technology Centre Prague
2016-2017
Disaster plant pathology addresses how natural and human-driven disasters impact diseases the requirements for smart management solutions. Local to global drivers of disease change in response disasters, often creating environments more conducive disease. Most have indirect effects on health through factors such as disrupted supply chains damaged infrastructure. There is also potential direct from pathogen or vector dispersal due floods, hurricanes, human migration driven by war. Pulse...
Vascular plants are commonly colonized by endophytic actinobacteria. However, very little is known about the relationship between these microorganisms and cacao fruits. In order to determine physiological taxonomic relationships members of this community, actinobacteria were isolated from fruits seeds. Among 49 isolates recovered, 11 morphologically distinct selected for further characterization. Sequencing 16S rRNA gene allowed partition into three phylogenetic clades. Most belonged...
Natural and human-driven disasters are a significant challenge to the sustainable production of food security crops in Great Lakes region Africa. A relevant research gap is effect climate change on distribution pathogens pests this region. We evaluated current geographic risk four - banana, cassava, potato, sweetpotato region, potential future under change. First, cropland connectivity analysis identified locations likely important spread establishment crop-specific for each crop, with...
The taxonomy of an actinobacterial strain, designated JJY4T, was established using a polyphasic approach. JJY4T isolated from the rhizosphere Chromolaena odorata in Yaoundé (Cameroon) during project for selection biological control agents. Strain exhibited antimicrobial activities against bacteria, fungi, and oomycetes. also traits plant growth-promoting rhizobacteria such as solubilization inorganic phosphate, production siderophores indole-3-acetic acid, 1-aminocyclopropane-1-carboxylate...
The aim of this study was to determine the allelopathic effects Azadirachta indica oil and aqueous extracts Tithonia diversifolia Thevetia peruviana on growth stimulation metabolites involved in tomato plant resistance. Randomized blocks within a shaded area, different treatments prepared at 10% 15% (v/v w/v) water were subsequently applied tomatoes seeds monitor effect germination, leaves resilience plants. result showed that stressful conditions all significantly inhibit (p T. promotes...
Downy mildew caused by Plasmopara viticola is a devastating disease of grapes. Four formae speciales have been identified in the pathogen, with P. f. sp. aestivalis and riparia responsible for epidemics eastern Canada. The objective this study was to evaluate effect temperature on zoospore release from sporangia aggressiveness these two speciales. determined incubation time estimating per cent empty sporangia. assessed grape variety 'Vidal' using leaf disc assay; incidence, latency,...
La présente étude analyse au moyen d’une enquête réalisée auprès de 167 maraîchers bas-fonds marécageux la ville Yaoundé (Cameroun) quelques aspects l’utilisation des pesticides synthèse et perception extraits plantes sauvages dans lutte contre les ravageurs maladies cultures. L’analyse descriptive données montre que 85% enquêté n’ont pas été formés en agriculture, 59% reçu conseils sur synthèse. Par ailleurs, seuls 29% d’entre eux ont fait études universitaires. En conséquence, même s’ils...
Priming with natural compounds is an interesting alternative for sustainable agriculture to explore the molecular mechanisms associated management of diseases caused by soil borne pathogens. The aim this work was evaluate effect amendment bio-oyster shell on stimulation cocoa plant defense systems against P. megakarya in nursery. For purpose, potential stimulate evaluated at 1% W/W under greenhouse conditions. After amendment, agronomic growth parameters and were analyzed. degree expression...
Priming by natural compounds is an interesting alternative for sustainable agriculture to explore the molecular mechanisms associated with management of diseases caused soil borne pathogens. The aim this work was evaluate effect amendment bio-oyster shell on stimulation cocoa plant defense systems against P. megakarya in nursery. For purpose, potential stimulate evaluated at 1% W/W under greenhouse conditions. After amendment, agronomic parameters growth and were analysed. degree expression...
There is evidence of five clades Plasmopara viticola in the world. Only two clades, riparia and aestivalis, have been identified as responsible for downy mildew epidemics Quebec, Canada. It was reported 2021 that caused by clade start 2 or 3 weeks before those aestivalis more aggressive than riparia. The objective this work to study competition between P. (A) (B) compare aggressiveness both mono- coinfection situations. Suspensions sporangia from with six percentage combinations (AB 100-0;...
Abstract Context Informal seed trade can exacerbate crop disease epidemics. Potato production across Ethiopia is threatened by the spread of seedborne pests and pathogens, particularly bacterial wilt, caused Ralstonia solanacearum Species Complex (RSSC). The RSSC commonly dispersed through informal potato, with potential to move long distances among trading countries. Efficient testing programs formal systems reduce risk expansion in a country’s potato cropping system. Objective In this...
Abstract Cameroon and Ethiopia face humanitarian crises that disrupt the production of key food security crops like banana plantain, cassava, potato, sweetpotato. In this study, we address seed degeneration in these crops, reduction planting material quality due to accumulation pathogens pests. We consider context crises, with goal developing an ongoing ‘national plant health risk analysis’, case inform decisions about mitigating degeneration. analyzed cropland density maps applied network...
The susceptibility of commonly grown grapevine cultivars in the province Quebec to Plasmopara viticola (Berk. & M.A. Curtis) Berl. De Toni clades riparia and aestivalis was compared. relationship between anatomic (density size stomata type leaf hairs) genetic composition (percentages Vitis vinifera L., Michx. Michx.) factors their two investigated. were classified according each clade. aggressiveness clade positively correlated with negatively hairs. However, density, estimated...
This study aimed to determine the effect of 10 and 15% concentrations Azadirachta indica oil (v/v) Tithonia diversifolia Thevetia peruviana liquid manure (w/v) on some key characteristics tomato fruits. For this purpose, extracts were sprayed plants every two weeks until fruits harvested. The results show that T. mash had most significant positive impact (p < 0.05) size, weight, ability protect DNA from denaturation. Indeed, compared harvested untreated plants, treatment increased surface...