Salix arbutifolia is a riparian dioecious tree species that is of conservation concern in Japan because of its highly restricted distribution. Eighteen polymorphic loci of dinucleotide microsatellites were isolated and characterized. Among these, estimates of the expected heterozygosity ranged from 0.350 to 0.879. Cross-species amplification was successful at 9-13 loci among six Salix species and at three loci in one Populus species.
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Characterization of the complete chloroplast genome and development of molecular markers of Salix.
Sci Rep
November 2024
Jiangsu Academy of Forestry, Nanjing, China.
Article Synopsis
- Salix is an important tree species in China with ecological and economic benefits, particularly in phytoremediation, as it can absorb heavy metals; five ornamental species were sequenced for this study.
- The research involved high-throughput sequencing to analyze the chloroplast genomes of these Salix species, focusing on gene composition, structural characteristics, and identifying potential molecular markers for better classification and identification.
- Results showed high similarity in chloroplast sequences among the species, along with unique simple repeat sequences, highlighting key variations in specific genome regions that could serve as valuable molecular markers for further research on Salix.
Gap-free X and Y chromosome assemblies of Salix arbutifolia reveal an evolutionary change from male to female heterogamety in willows, without a change in the position of the sex-determining locus.
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Eastern China Conservation Centre for Wild Endangered Plant Resources, Shanghai Chenshan Botanical Garden, Shanghai, 201602, China.
In the Vetrix clade of Salix, a genus of woody flowering plants, sex determination involves chromosome 15, but an XY system has changed to a ZW system. We studied the detailed genetic changes involved. We used genome sequencing, with chromosome conformation capture (Hi-C) and PacBio HiFi reads to assemble chromosome level gap-free X and Y of Salix arbutifolia, and distinguished the haplotypes in the 15X- and 15Y-linked regions, to study the evolutionary history of the sex-linked regions (SLRs).
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State Key Laboratory of Tree Genetics and Breeding, Jiangsu Key Laboratory for Poplar Germplasm Enhancement and Variety Improvement, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China.
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Department of Integrative Biology, University of California, Berkeley, CA, USA.
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