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In order to explore the chloroplast genome characteristics of Sophora flavescens and the phylogenetic relationship of the genus, this study used high-throughput sequencing technology to sequence and functionally annotate the chloroplast genome of Sophora flavescens. The results showed that the full length 154 165 bp of Sophora flavescens chloroplast genome showed a typical four-stage structure. The chloroplast genome contains 123 genes, including 77 protein-coding genes, 38 tRNA genes and 8 rRNA genes. Sequence analysis revealed 104 SSR loci, most of which consisted of A and T. In addition, the chloroplast genome codon preference is weak, and the coding region is biased towards the use of A and T bases. A comparative analysis of two different regions of Sophora flavescens chloroplast genome revealed four differential genes. Based on the maximum likelihood method (ML) for phylogenetic analysis of Sophora flavescens and 16 other leguminous, it was found that the relationship between Sophora flavescens and the genus Sophora alopecuroides is the closest. This study provides an important theoretical basis for the genetic variation, breeding and phylogenetic analysis of Sophora flavescens, and has certain reference value.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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