A5065365045- Plant-Microbe Interactions and Immunity
- Mycotoxins in Agriculture and Food
- Plant Pathogens and Fungal Diseases
- Plant Diversity and Evolution
- Cassava research and cyanide
- Sesquiterpenes and Asteraceae Studies
- Plant Virus Research Studies
- Plant Molecular Biology Research
- Botanical Research and Applications
- Nematode management and characterization studies
- Plant Reproductive Biology
- Botanical Research and Chemistry
- Plant and animal studies
- Plant nutrient uptake and metabolism
- Botany and Plant Ecology Studies
- Plant Genetic and Mutation Studies
- Plant Parasitism and Resistance
Donald Danforth Plant Science Center
2025
National Center for Agricultural Utilization Research
2020-2023
Agricultural Research Service
2020-2023
Oberlin College
2017-2022
Summary The evolution of l ‐ DOPA 4,5‐dioxygenase activity, encoded by the gene DODA , was a key step in origin betalain biosynthesis Caryophyllales. We previously proposed that activity evolved via single Caryophyllales‐specific neofunctionalisation event within lineage. However, this has not been confirmed and lineage exhibits numerous duplication events, whose evolutionary significance is unclear. To address this, we functionally characterised 23 distinct proteins for from four...
Fusarium graminearum causes head blight (FHB) on wheat and barley contaminates grains with various mycotoxins that are toxic to humans animals. Deoxynivalenol (DON), a type B trichothecene, is an essential virulence factor required for F. spread within head. Recently, novel A trichothecenes NX-2 NX-3 (NX) have been found in graminearum. NX lack keto group at the C8 position. To determine if play role similar of DON during infection, deletion mutants TRI5, first gene trichothecene...
Abstract Cassava brown streak disease (CBSD) is caused by cassava viruses (CBSVs) from the family Potyviridae . Potyvirid viral genome-linked protein (VPg) recruitment of host eukaryotic translation initiation factor 4E (eIF4E) proteins a critical step in life cycle. CBSV VPg interacts with all five eIF4E-family members. Simultaneously knocking out eIF4E- genes nCBP-1 and nCBP-2 , cultivar 60444, strongly reduces CBSD root symptoms titer but does not result complete resistance, likely due to...
Fusarium graminearum causes head blight (FHB) on wheat, barley, and other grains. During infection, F. produces deoxynivalenol (DON), which contaminates grain functions as a virulence factor to promote FHB spread throughout the wheat head. secretes hundreds of putative effectors, can interfere with plant immunity disease development. However, function most these effectors remains unknown. In this study, we investigated expression profiles 23 effector-coding genes during early stage...
Fusarium graminearum is one of the primary causal agents head blight (FHB) on wheat and barley. FHB reduces grain yield contaminates with various mycotoxins, including deoxynivalenol (DON). DON acts as a virulence factor to promote fungus passing rachis node spreading throughout but not Reactive oxygen species (ROS) are earliest defense responses during plant pathogen interactions. However, complex roles ROS development remain unclear. We investigated immune in triggered by chitin, major...
PREMISE OF THE STUDY: Gypsum endemism in plants (gypsophily) is common on gypsum outcrops worldwide, but little known about the functional ecology of Chihuahuan Desert gypsophiles. We investigated whether leaf chemistry gypsophile lineages from northern are similar to leaves related nonendemic (gypsovag) species relative their soil chemistry. expected widely distributed gypsophiles (hypothesized be older gypsum) would have distinct narrowly distributed, relatively younger endemic and...
Fusarium graminearum, the causal agent of head blight (FHB), produces trichothecenes including deoxynivalenol (DON), nivalenol (NIV), and 3,7,15-trihydroxy-12,13-epoxytrichothec-9-ene (NX-3). These toxins contaminate grains cause profound health problems in humans animals. To explore exploiting a fungal self-protection mechanism plants, we examined ability F. graminearum trichothecene 3-O-acetyltransferase (FgTri101) to detoxify several key produced by graminearum: DON, 15-ADON, NX-3, NIV....
ABSTRACT Plants develop throughout their lives: seeds become seedlings that mature and form fruits seeds. Although the underlying mechanisms drive these developmental phase transitions have been well elucidated for shoots, extent to which they affect root is less clear. However, anatomy does change as some plants mature; meristems enlarge radial thickening occurs. Here, in Arabidopsis thaliana, we show overexpressing miR156A, a gene promotes juvenile phase, increased density of system, even...
Phylogenetic analyses, biogeography, morphology, and ecology confirm that Helenium scaposum is a distinct species belonging to genus Helenium. Within Helenium, it appears H. most closely related members of sect. Leptopoda. The morphological resemblance drummondii, pinnatifidum, vernale justifies further study better understand relationships among these species.