Infested Kernel Method
Infested Kernel Method - Related Videos
10:01
Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays
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Cited by 39 •
2012
The devastation of cereal crops by seed-infecting fungi has prompted numerous research efforts to better understand plant-pathogen interactions. To study seed-fungal interactions in a laboratory setting, we developed a robust method for the quantification of fungal reproduction, biomass, and mycotoxin contamination using kernel bioassays.
05:38
A Versatile Model of Hard Tick Infestation on Laboratory Rabbits
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Cited by 22 •
2018
We have developed a simple and versatile system to feed hard ticks on laboratory rabbits. Our non-laborious protocol uses easily accessible materials and can be adjusted depending on the requirements of the various experimental settings. The method allows comfortable monitoring and/or sampling of ticks during the entire feeding period.
07:05
A Capsule-Based Model for Immature Hard Tick Stages Infestation on Laboratory Mice
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Cited by 33 •
2020
In this study, a feeding system for nymphal and larval stages of hard tick was developed using a capsule attached to laboratory mouse. The feeding capsule is made from flexible materials and remains firmly attached to the mouse for at least one week and allows comfortable monitoring of tick feeding.
05:56
Detached Leaf Assays to Simplify Gene Expression Studies in Potato During Infestation by Chewing Insect Manduca sexta
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Cited by 4 •
2019
The presented method creates natural herbivore damaged plant tissue through the application of Manduca sexta larvae to detached leaves of potato. The plant tissue is assayed for expression of six transcription factor homologs involved in early responses to insect herbivory.
05:22
Transverse Sectioning of Mature Rice (Oryza sativa L.) Kernels for Scanning Electron Microscopy Imaging Using Pipette Tips as Immobilization Support
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Cited by 1 •
2022
This protocol allows for the preparation of transverse sections of cereal seeds (e.g., rice) for the analysis of endosperm and starch granule morphology using scanning electron microscopy.
FAQs
The assay separates two related biological questions by observing both the kernel response and the target organism’s success. Affected-kernel frequency or damage indicates how susceptible the host substrate is, while development, feeding, penetration, oviposition, or microbial growth indicates how successfully the organism uses it. Considering both outcomes helps researchers avoid treating infestation level as the only measure of biological performance.
The starting inoculum or insect population and the environmental conditions are central variables. They determine how much biological pressure kernels experience and whether feeding, penetration, oviposition, development, or microbial growth can proceed. Keeping these factors defined allows differences in infestation, damage, or development to be interpreted as meaningful responses rather than uncontrolled variation in the assay.
A standardized kernel substrate gives each experimental condition a comparable host material. That consistency supports measurement of differences in susceptibility, organism performance, or treatment effectiveness across samples. Researchers can then relate observed changes to the target organism or intervention more confidently, while using affected kernels and changes in kernel quality as measurable indicators of biological impact.
The method can track several stages of interaction between an organism and a kernel, including feeding, penetration, oviposition, microbial growth, and subsequent development. These observations provide more detail than a simple presence-or-absence score. For example, researchers may distinguish kernels that are exposed from those in which the organism successfully develops or produces measurable damage.
A typical workflow begins by assigning kernels to defined experimental conditions, applying a known inoculum or insect population, and maintaining the kernels under controlled environmental conditions. After the interaction period, researchers assess affected kernels, damage, developmental success, or changes in kernel quality. The resulting measurements can then be used to compare susceptibility, organism performance, or treatment effects.
Common measurements include the number or proportion of affected kernels, the extent of kernel damage, organism developmental success, and loss of kernel quality. The appropriate endpoint depends on the biological question. Together, these measurements can show whether an organism established successfully, whether kernels resisted damage, or whether an intervention reduced infestation or protected the harvested grain.
Researchers apply the method to study host susceptibility, evaluate pest resistance, investigate pathogen interactions, and test treatments intended to reduce infestation. Its controlled kernel-based design is especially relevant to stored-product biology because it connects organism performance with damage and grain quality. The assay therefore supports both biological characterization and comparison of protective strategies for harvested grain.