A5060438597- Climate change impacts on agriculture
- Plant Pathogens and Fungal Diseases
- Plant Disease Resistance and Genetics
- Fungal and yeast genetics research
- Plant-Microbe Interactions and Immunity
- Plant Physiology and Cultivation Studies
- Fungal Plant Pathogen Control
- Plant Pathogens and Resistance
- Wheat and Barley Genetics and Pathology
- Horticultural and Viticultural Research
- Mycotoxins in Agriculture and Food
- Agriculture, Soil, Plant Science
- Smart Agriculture and AI
- Genetic Mapping and Diversity in Plants and Animals
- Microbial Natural Products and Biosynthesis
- Mycorrhizal Fungi and Plant Interactions
- Climate variability and models
- Lichen and fungal ecology
- Plant Pathogenic Bacteria Studies
- Postharvest Quality and Shelf Life Management
- Agricultural risk and resilience
- Rice Cultivation and Yield Improvement
- Spectroscopy and Chemometric Analyses
- Microbial infections and disease research
- Plant responses to elevated CO2
Seoul National University
2021-2025
APEC Climate Center
2015-2021
Virginia Tech
2006-2009
At the site of microbial infections, significant influx immune effector cells and necrosis tissue by invading pathogen generate hypoxic microenvironments in which both host must survive. Currently, whether hypoxia adaptation is an important virulence attribute opportunistic pathogenic molds unknown. Here we report characterization a sterol-regulatory element binding protein, SrbA, mold, Aspergillus fumigatus. Loss SrbA results mutant strain fungus that incapable growth environment...
Summary Alternaria brassicicola is an important, necrotrophic fungal pathogen that causes black spot disease on Brassicas. In order to study pathogenicity mechanisms, gene deletion mutants were generated for 21 putative regulatory genes including kinases and transcription factors subjectively selected from the annotated A. genome. Except Ste12, of SNF1 kinase, XlnR, CreA homologues control cell wall‐degrading enzyme production did not significantly affect virulence in contrast other...
The fungal genus Alternaria is comprised of many saprophytic and endophytic species, but most well known as containing notoriously destructive plant pathogens. There are over 4,000 Alternaria/host associations recorded in the USDA Fungal Host Index ranking 10th among nearly 2,000 genera based on total number host records. While few species appear to have a sexual stage their life cycles, majority lack sexuality altogether. Many pathogenic prolific toxin producers, which facilitates...
Depudecin, an eleven-carbon linear polyketide made by the pathogenic fungus Alternaria brassicicola, is inhibitor of histone deacetylase (HDAC). A chemically unrelated HDAC inhibitor, HC toxin, was earlier shown to be a major virulence factor in interaction between Cochliobolus carbonum and its host, maize. In order test whether depudecin also for A. we identified genes biosynthesis created depudecin-minus mutants. The gene cluster contains six (DEP1 DEP6), which are predicted encode...
A bacterial pathogen, Pseudomonas syringae pv. actinidiae (Psa), is a causal agent of kiwifruit canker worldwide. Psa biovar 3 (Psa3) was first detected in 2011 at an orchard Dodeok-myeon, Goheunggun, Jeonnam Province Korea. In this study, we present the results epidemiological study regarding Psa3 occurrence on orchards Korea for period 2013 to 2015. Since detection 2011, there no further case reported by 2013. However, rapidly spreading 33 2014; except three Sacheonsi, Gyeongnam Province,...
Postharvest (detached) and in planta (attached) fruits of pepper plants, Capsicum annuum cv. Jejujaerae (susceptible) baccatum PBC80 (resistant), inoculated with the anthracnose pathogen Colletotrichum gloeosporioides were examined using light, confocal laser scanning, electron microscopy to compare cytological differences between compatible incompatible interactions. In nonwound inoculation postharvest fruit, resistant tissues showed a significant increase thickness cuticle layer compared...
The regulation of intracellular levels reactive oxygen species (ROS) is critical for developmental differentiation and virulence many pathogenic fungi. In this report we demonstrate that a novel transmembrane protein, TmpL, necessary ROS tolerance to external ROS, required infection plants by the necrotroph Alternaria brassicicola mammals human pathogen Aspergillus fumigatus. both fungi, tmpL encodes predicted hybrid membrane protein containing an AMP-binding domain, six putative domains,...
Alternaria brassicicola causes black spot disease of cultivated Brassicas and has been used consistently as a necro-trophic fungal pathogen for studies with Arabidopsis. In A. brassicicola, mutant generation the most rate-limiting step functional analysis individual genes due to low efficiency both transformation targeted integration. To improve gene disruption well expedite construct production, we short linear minimal elements, an antibiotic resistance selectable marker gene, 250-...
SUMMARY Alternaria brassicicola is a necrotrophic pathogen causing black spot disease on virtually all cultivated Brassica crops worldwide. In many plant pathosystems fungal secondary metabolites derived from non-ribosomal peptide synthetases (NPSs) are phytotoxic virulence factors or antibiotics thought to be important for niche competition with other micro-organisms. However, of the functions NPS genes and their products largely unknown. this study, we investigated function one A. genes,...
Fusarium head blight (FHB), caused by graminearum species complex, is one of the most destructive plant diseases affecting wheat and barley globally. However, effective management methods remain elusive because limited availability resistant cultivars. Accordingly, systematic surveillance key strategies, allowing for prompt responses to emerging outbreaks supporting establishment preventive guidelines future occurrences. FHB severity in southern region Republic Korea 2024 following an...
Cucumber powdery mildew, caused by <i>Podosphaera xanthii</i>, can lead to significant yield losses in greenhouse cultivation. A calendar-based fungicide spray program is commonly employed farmers, often leading excessive spraying irrespective of disease conduciveness under certain weather conditions. Therefore, a model that predict the onset symptoms for determining when start first applications during season needed. This study developed forecasting model, which uses growing...
As the climate changes, increasing variations in environmental factors directly influence crop cultivation at different magnitudes over a broad range of local communities worldwide. result, there is an urgent need to develop impact assessments and adaptation strategies for use local, rather than national or global, levels. In this study, we predicted future frost damage kiwifruit Jeonnam province, Korea, as case study assessment change. This included series models that integrated both...
Fusarium head blight (FHB) of wheat, mainly caused by graminearum Schwabe, is an emerging threat to wheat production in Korea under a changing climate. The disease occurrence and accumulation associated trichothecene mycotoxins kernels strongly coincide with warm wet environments during flowering. Recently, the International Panel for Climate Change released 6th Coupled Model Intercomparison Project (CMIP6) climate change scenarios shared socioeconomic pathways (SSPs). In this study, we...
To predict rice blast, many machine learning methods have been proposed. As the quality and quantity of input data are essential for techniques, this study develops three artificial neural network (ANN)-based blast prediction models by combining two ANN models, feed-forward (FFNN) long short-term memory, with diverse datasets, compares their performance. The Blast_Weathe memory r_FFNN model had highest recall score (66.3%) prediction. This requires types data: occurrence last 3 years weather...
Early warning services for crop diseases are valuable when they provide timely forecasts that farmers can utilize to inform their disease management decisions. In South Korea, collaborative controls unmanned aerial vehicles commonly performed most rice paddies. However, such could benefit from seasonal early warnings with a lead time of few months. As first step establish service using climate forecasts, we developed the EPIRICE Daily Risk Model blast by extracting and modifying core...
Sudden outbreaks of crop pests (insect and diseases) are increasing in Korea due to climate change globalization. To prevent such outbreaks, it is necessary predict control pest occurrences advance. Crop have been predicted through process-based or statistical modeling; however, the limitations these models, which rely solely on historically acquired domain knowledge data, become increasingly prominent owing rapidly changing agricultural ecosystems. overcome limitations, artificial neural...
Phasmatodea, commonly known as stick insects, are recognized noteworthy pests globally, impacting agriculture and forest ecosystems. Among them, the outbreak of