A5039977549- Plant Pathogens and Fungal Diseases
- Plant Disease Resistance and Genetics
- Plant Pathogens and Resistance
- Plant-Microbe Interactions and Immunity
- Crop Yield and Soil Fertility
- Plant Virus Research Studies
- Plant Pathogenic Bacteria Studies
- Bioenergy crop production and management
- Nematode management and characterization studies
- Plant Disease Management Techniques
- Forest Insect Ecology and Management
University of Minnesota
2022-2025
University of Minnesota System
2022-2023
Corn stunt is one of the most significant corn diseases in Neotropics, leading to severe plant stunting and substantial yield losses. Although four pathogens have been found either singly or combination infected plants Americas, spiroplasma (Spiroplasma kunkelii) predominant pathogen associated with disease U.S., due its widespread distribution Rio Grande Valley region persistent occurrence California Florida. During 2024 growing season, reports chlorosis, leaf reddening, fields Southern,...
Tar spot of corn is an emerging plant disease in the continental United States and Canada caused by fungal pathogen Phyllachora maydis Maubl. has been known to occur Mexico, Caribbean, Central South America since early mid-1900s. In 2015, it was reported for first time States. Since that time, tar spread across corn-producing areas with epidemics as recent 2021 resulting significant yield losses. Although affect over a century Americas, biology pathogen, etiology, epidemiology are not well...
Tar spot of corn is a significant and spreading disease in the continental U.S. Canada caused by obligate biotrophic fungus Phyllachora maydis. As 2023, tar had been reported 18 states one Canadian Province. The symptoms include chlorotic flecking followed formation black stromata where conidia ascospores are produced. Advancements research management for have limited need reliable method to inoculate plants enable study disease. goal this was develop induce controlled conditions.We induced...
Tar spot is a foliar disease of corn caused by Phyllachora maydis, which produces signs in the form stromata that bear conidia and ascospores. maydis cannot be cultured media; therefore, inoculum source for studying tar comprises leaves with collected from naturally infected plants. Currently, there no effective protocol to induce infection under controlled conditions. In this study, an inoculation method was assessed greenhouse growth chamber conditions test whether P. could induced on...
Tar spot of corn (Zea mays L.) is a significant disease in the United States and Canada caused by Phyllachora maydis, an obligate biotroph fungus. However, field research critical for understanding managing has been hindered need methods to inoculate with P. maydis environments. In this study, we developed demonstrated efficacy method initiate tar settings using inoculations leaves inoculum that had stored at −20°C 10 months. Stromata were observed 19 days after two experiments, stromata...
Taproot decline (TRD) of soybean ( Glycine max [L] Merr.) is an emerging disease caused by Xylaria necrophora and currently observed in the southern United States. X. infects roots, causing necrosis foliar interveinal chlorosis followed necrosis. The most recent estimates yield losses associated with this (0.57 to 1.18 million bushels) highlight its potential become a major problem for producers region. mechanism which affects foliage remains unknown, but plausible explanation that...
Abstract Objective: Tar spot is a foliar disease of corn caused by Phyllachora maydis , which produces signs in the form stromata that bear conidia and ascospores. cannot be cultured media; therefore, inoculum source for studying tar comprises leaves with collected from naturally infected plants. Currently, there no effective protocol to induce infection under controlled conditions. In this study, an inoculation method was assessed greenhouse growth chamber conditions test whether P. could...
Abstract Xylaria species are recognized globally given their common occurrence as wood-degrading saprophytes in forest ecosystems. They known for ability to produce secondary metabolites with diverse bioactivity. A few pathogens, but necrophora is the only be a pathogen of an annual crop, causing taproot decline (TRD) on soybean [ Glycine max (L) Merr.]. Recent work determined that culture filtrates produced by X. phytotoxic and likely responsible foliar symptoms disease. We demonstrate may...
Abstract Tar spot of corn ( Zea mays L.) is a significant disease in the United States and Canada caused by Phyllachora maydis , an obligate biotroph fungus. However, field research critical for understanding, managing, mitigating has been hindered need methods to inoculate with P. environments. In this study, we developed method initiate tar settings using inoculations leaves inoculum that had stored at -20 °C 10 months. Stromata were observed 19 days after inoculation (dai), spread was...