Plant Defense Screening
Plant Defense Screening - Related Videos
12:43
Electroantennographic Bioassay as a Screening Tool for Host Plant Volatiles
0 Views •
Cited by 14 •
2012
A method to rapidly screen host plant volatiles by measurement of the electrophysiological response of adult navel orangeworm (Amyelois transitella) antennae to single components and blends via electroantennographic analysis is demonstrated.
02:12
Co-Infiltration Assay for Screening Pathogen Effectors that Suppress Plant RNA Silencing
0 Views •
2026
Source: Shi, J., et al. Screening and Identification of RNA Silencing Suppressors from Secreted Effectors of Plant Pathogens. J. Vis. Exp. (2020)This video demonstrates a co-infiltration assay for identifying pathogen effector proteins that suppress RNA silencing in Nicotiana benthamiana 16c. A fluorescent reporter and a candidate effector gene are delivered into plant leaves via Agrobacterium. Normally, RNA silencing degrades reporter transcripts, reducing fluorescence. Suppressor effectors...
11:50
Bacterial Leaf Infiltration Assay for Fine Characterization of Plant Defense Responses using the Arabidopsis thaliana-Pseudomonas syringae Pathosystem
0 Views •
Cited by 47 •
2015
Quantification of pathogen growth is a powerful tool to characterize various Arabidopsis thaliana (hereafter: Arabidopsis) immune responses. The method described here presents an optimized syringe infiltration assay to quantify the Pseudomonas syringae pv. maculicola ES4326 growth in adult Arabidopsis leaves.
13:37
Generation of Composite Plants in Medicago truncatula used for Nodulation Assays
0 Views •
Cited by 7 •
2011
We demonstrate how hairy root composite plants can be used to study plant-rhizobium interactions and nodulation in the difficult-to-transform species Medicago truncatula.
10:22
Transmitting Plant Viruses Using Whiteflies
0 Views •
Cited by 41 •
2013
Improving our understanding of and our ability to manage many of the insect-transmitted plant viruses requires the use of the vector. Insect transmission of plant viruses is a tritrophic interaction, and as such requires the manipulation of insects, virus, and plant. Vectors must be reared in large numbers and manipulated in such a way as to insure high rates of transmission to test plants. The basics of rearing and manipulating the whitefly, Bemisa tabaci (Hemiptera: Aleyrodidae), a vector of...
FAQs
Plant defense screening can distinguish protective traits by linking a defined stressor to measurable plant outcomes. A line that shows fewer disease symptoms, reduced pathogen growth, or less tissue damage under the same conditions demonstrates a different response pattern from a more affected line. Comparing these patterns helps connect visible performance with plant defense.
Genetically distinct plants provide the variation needed to compare defense responses across lines or tissues. When researchers expose these materials to the same defined stressor under controlled conditions, differences in disease symptoms, pathogen growth, tissue damage, or defense-related changes can be associated with protective traits. This comparison supports evaluation of candidate genes and robust breeding lines.
Useful measurements include disease symptoms, pathogen growth, tissue damage, and other defense-related changes. Together, these outcomes provide complementary evidence: symptoms and tissue damage describe the plant's condition, pathogen growth indicates how well the threat persists, and defense-related changes reveal physiological responses. Comparing these measurements helps researchers interpret resistance patterns rather than relying on a single observation.
A typical assay begins by selecting genetically distinct plants or plant tissues and defining the stressor to be evaluated. Researchers then expose the material under controlled conditions and compare responses using consistent observations, such as disease symptoms, pathogen growth, tissue damage, or defense-related changes. Standardized conditions make results more reliable when candidate lines, genes, or treatments are compared.
Researchers can use these screens when they need an efficient comparison of candidate genes, treatments, or breeding lines against a defined threat. By measuring responses across materials under controlled conditions, the assay helps identify protective traits and select plants with stronger resilience. The resulting comparisons can guide further studies of plant immunity and crop improvement.
In biology, these assays provide a controlled way to investigate plant immunity and host-microbe interactions while examining how plants respond to pathogens, herbivores, or environmental threats. Their results can identify robust varieties and clarify defense-related traits. This information supports sustainable crop protection by guiding selection and research toward plants that better withstand damaging stresses.