green microalga offers many environmentally friendly applications, including wastewater treatment, biofertilizers, animal feed, and biofuel production. Different strains of have unique properties that may suit one application but not another. There is a need to distinguish between the many available strains of to choose the one that best fits the application. Consequently, our research goal was to develop strain-specific simple sequence repeat (SSR) markers to differentiate between the different strains. Seventeen markers spanning ten out of the twelve chromosomes of the genome were developed and validated on eight different strains from culture collections and our lab, and were then analyzed by fragment analysis. The results demonstrate the potential of these polymorphic markers to detect the genetic differences between the strains of , and to serve as useful tools for the intra-species population genetic analysis and conservation genetics studies of .
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http://dx.doi.org/10.4014/jmb.2404.04024 | DOI Listing |
bioRxiv
February 2025
Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA.
Motivation: Longitudinal pathogen genotyping data from individual hosts can uncover strain-specific infection dynamics and their relationships to disease and intervention, especially in the malaria field. An important use case involves distinguishing newly incident from pre-existing (persistent) strains, but implementation faces statistical challenges relating to individual samples containing multiple strains, strains sharing alleles, and markers dropping out stochastically during the genotyping process. Current approaches to distinguish new versus persistent strains therefore rely primarily on simple rules that consider only the time since alleles were last observed.
View Article and Find Full Text PDFAntibodies (Basel)
January 2025
Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.
The elicitation of broadly neutralizing antibodies (bnAbs) is a major goal of vaccine design for highly mutable pathogens, such as influenza, HIV, and coronavirus. Although many rational vaccine design strategies for eliciting bnAbs have been devised, their efficacies need to be evaluated in preclinical animal models and in clinical trials. To improve outcomes for such vaccines, it would be useful to develop methods that can predict vaccine efficacies against arbitrary pathogen variants.
View Article and Find Full Text PDFFood Res Int
January 2025
Department of Food and Nutrition, University of Helsinki, Anges Sjöbergin katu 2, Helsinki 00790, Finland.
Climate change has introduced new challenges to food safety by altering the occurrence and distribution of fungi leading to increased mycotoxin contamination in crops. Among these mycotoxins, aflatoxin B1 (AFB1) stands out as a potent carcinogen, posing significant health risks to consumers. Methods for AFB1 decontamination have been intensively investigated and lactic acid bacteria (LAB) have gained increasing interest for their potential in AFB1 detoxification.
View Article and Find Full Text PDFmSystems
January 2025
Ghent University, Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Gent, Belgium.
Influenza Other Respir Viruses
October 2024
Division of Viral Products, Laboratory of DNA Viruses, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA.
Background: The potency of inactivated and recombinant influenza vaccines is measured using the single-radial immunodiffusion (SRID) assay. The strain-specific antigen and antibody potency reagents required for the assay are prepared and distributed by regulatory agencies to ensure vaccine standardization, but timely reagent production is always challenging. This poses unique concerns for rapid pandemic responses.
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