In this study, DNA markers were developed for discrimination of strawberry ( × L.) cultivars based on retrotransposon insertion polymorphisms. We performed a comprehensive genomic search to identify retrotransposon insertion sites and subsequently selected one retrotransposon family, designated CL3, which provided reliable discrimination among strawberry cultivars. Through analyses of 75 strawberry cultivars, we developed eight cultivar-specific markers based on CL3 retrotransposon insertion sites. Used in combination with 10 additional polymorphic markers, we differentiated 35 strawberry cultivars commonly cultivated in Japan. In addition, we demonstrated that the retrotransposon-based markers were effective for PCR detection of DNA extracted from processed food materials, whereas a SSR marker was ineffective. These results indicated that the retrotransposon-based markers are useful for cultivar discrimination for processed food products, such as jams, in which DNA may be fragmented or degraded.
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http://dx.doi.org/10.1270/jsbbs.19116 | DOI Listing |
Genes Genet Syst
January 2025
Faculty of Science, Hokkaido University.
In our study, we aimed to identify new mutants resulting from ONSEN transposition in Arabidopsis thaliana by subjecting nrpd1 mutants to heat stress. We isolated a mutant with a significantly elongated hypocotyl, named "Long hypocotyl in ONSEN inserted line 1" (HYO1). This phenotype was heritable, with progeny consistently displaying longer hypocotyls than the wild type.
View Article and Find Full Text PDFGenes Dev
December 2024
Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5T 3H7, Canada;
The nucleolus is a major subnuclear compartment where ribosomal DNA (rDNA) is transcribed and ribosomes are assembled. In addition, recent studies have shown that the nucleolus is a dynamic organizer of chromatin architecture that modulates developmental gene expression. rDNA gene units are assembled into arrays located in the p-arms of five human acrocentric chromosomes.
View Article and Find Full Text PDFGenome Biol
January 2025
College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058, China.
Background: Fruit acidity and color are important quality attributes in peaches. Although there are some exceptions, blood-fleshed peaches typically have a sour taste. However, little is known about the genetic variations linking organic acid and color regulation in peaches.
View Article and Find Full Text PDFEMBO Rep
January 2025
Myeloid Therapeutics Inc., Cambridge, MA, 02139, USA.
To address a wide range of genetic diseases, genome editing tools that can achieve targeted delivery of large genes without causing double-strand breaks (DSBs) or requiring DNA templates are necessary. Here, we introduce CRISPR-Enabled Autonomous Transposable Element (CREATE), a genome editing system that combines the programmability and precision of CRISPR/Cas9 with the RNA-mediated gene insertion capabilities of the human LINE-1 (L1) element. CREATE employs a modified L1 mRNA to carry a payload gene, and a Cas9 nickase to facilitate targeted editing by L1-mediated reverse transcription and integration without relying on DSBs or DNA templates.
View Article and Find Full Text PDFMol Ecol Resour
January 2025
School of Life Sciences, Anhui University, Hefei, Anhui, China.
Emberiza buntings (Aves: Emberizidae) exhibit extensive diversity and rapid diversification within the Old World, particularly in the eastern Palearctic, making them valuable models for studying rapid radiation among sympatric species. Despite their ecological and morphological diversity, there remains a significant gap in understanding the genomic underpinnings driving their rapid speciation. To fill this gap, we assembled high-quality chromosome-level genomes of five representative Emberiza species (E.
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