Species-specific Primers
Species-specific Primers - Related Videos
10:17
Laboratory Protocol for Genetic Gut Content Analyses of Aquatic Macroinvertebrates Using Group-specific rDNA Primers
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Cited by 7 •
2017
Most common gut content analyses of macroinvertebrates are visual. Requiring intense knowledge about morphological diversity of prey organisms, they miss soft bodied prey and, due to strong comminution of prey, are nearly impossible for some organisms, including amphipods. We provide detailed, novel genetic approaches for macroinvertebrate prey identification in the diet of amphipods.
06:57
Loop-mediated Isothermal Amplification (LAMP) Assays for the Species-specific Detection of Eimeria that Infect Chickens
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Cited by 10 •
2015
Diagnosis of Eimeria infection in chickens remains demanding. Parasite morphology- and host pathology-led approaches are commonly inconclusive, while molecular approaches based on PCR have proven demanding in cost and expertise. The aim of this protocol is to establish loop-mediated isothermal amplification (LAMP) as a straightforward molecular diagnostic for eimerian infection.
11:14
Primer-Free Aptamer Selection Using A Random DNA Library
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Cited by 20 •
2010
SELEX protocols comprise multiple rounds of selection, each of which require regeneration of bound ligands, which in turn require fixed primer sequences flanking the random library regions. These fixed primer sequences can interfere with the selection process (false positives and negatives). Here we present a primer-free protocol.
09:38
Assessing Species-specific Contributions To Craniofacial Development Using Quail-duck Chimeras
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Cited by 21 •
2014
This article describes a method to generate chimeric embryos that are designed to test the species-specific contributions of neural crest and/or other tissues to craniofacial development.
09:34
Development of a More Sensitive and Specific Chromogenic Agar Medium for the Detection of Vibrio parahaemolyticus and Other Vibrio Species
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Cited by 16 •
2016
Detection and isolation of clinically relevant Vibrio species require selective and differential culture media. This study evaluated the ability of a new chromogenic medium to detect and identify V. parahaemolyticus and other related species. The new medium was found to have better sensitivity and specificity than the conventional medium.
FAQs
Specificity comes from choosing primer sequences that match a DNA region unique to the target species or closely related group. During PCR, only a sufficiently complementary target provides the annealing site needed for efficient extension. This sequence-level discrimination helps distinguish related organisms when a biological sample contains more than one potential source of genetic material.
Annealing allows each primer to bind its complementary target sequence, while DNA polymerase extends the bound primer to form an amplicon. Reaction conditions must be optimized so that binding and extension favor the intended target. Poor optimization can reduce detectable amplification or weaken the distinction between the target species and closely related organisms.
They focus amplification on sequence differences that separate one organism or closely related group from another. If the primer-binding region corresponds to the intended target, PCR produces a detectable amplicon associated with that species. This targeted approach provides more precise identification than relying only on genetic material shared broadly among related organisms.
A typical workflow applies the selected primers to a sample containing genetic material, allows them to anneal to complementary target sequences during PCR, and uses DNA polymerase to extend them. Repeated amplification produces detectable amplicons when the target is present under optimized conditions. The resulting signal supports species identification or differentiation.
In infection studies, these primers can detect and differentiate pathogens while also identifying host or vector species associated with a sample. That combination helps researchers examine which organisms are present and clarify transmission patterns. The resulting specificity can strengthen diagnostic assessments and support investigations of relationships between infectious agents and their biological hosts.
Species-specific primers provide molecular information about the organisms present in a biological sample, including pathogens, hosts, or vectors. Researchers can use that information to distinguish contributors within mixed samples and relate organism identity to host–pathogen interactions. More precise identification may improve interpretation of infection studies and help connect molecular findings with transmission or immune research.