期刊
PLANTS-BASEL
卷 12, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/plants12071517
关键词
strawberry tree; Arbutus unedo L; plant germplasm collection; genome assembly; SSR markers; SNP markers; SNP-CAPS markers; RAPD markers; ISSR markers; plant molecular fingerprints; plant genetic relationships
The strawberry tree is a main component of the Mediterranean flora and has been used in traditional medicine. It is also a fruit used to produce preserves and liquors. Recently, a breeding program for the strawberry tree was established, and genetic variability and relationships among 50 selected accessions were studied using next-generation sequencing and molecular markers.
The strawberry tree (Arbutus unedo L.), an evergreen bush to small tree of the Ericaceae family, is a main component of the natural flora of the Mediterranean basin that also grows profusely through the Iberian Peninsula, southwestern France, and Ireland. The small edible red fruits are usually used to produce preserves, jams, and liquors, as the Portuguese aguardente de medronho. The leaves and fruits have been used for a long time in traditional medicine, and their bioactive compounds are presently the subject of intense research. A strawberry tree germplasm collection was recently established by the company Corte Velada (Odiaxere, Portugal). A set of 50 germplasm accessions was selected for a breeding program. A next-generation sequencing project was performed, resulting in the establishment of the first strawberry tree genome assembly and further identification of 500 SSR and 500 SNP loci. Individual molecular fingerprints for the unequivocal identification of the selected 50 accessions were established based on 71 markers alleles amplified by 4 SSR and 9 SNP markers. The same species-specific markers alleles combined with 61 random amplified markers amplified by 5 RAPD and 5 ISSR primers were used to assess the genetic variability and genetic relationships among the selected accessions.
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