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Complete chloroplast genomes and comparative analyses of Hippeastrum 'milady', Hippeastrum albertii and Hippeastrum reticulatum (Amaryllidaceae)

文献类型： 外文期刊

作者： Liu, Xiao-fei 1 ; Sun, Ying-bo 1 ; Zhu, Gen-fa 1 ; Huang, Li-li 1 ; Yu, Bo 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Environm Hort Inst, Guangzhou, Guangdong, Peoples R China

2.Minist Agr, Key Lab Urban Agr South China, Guangdong Key Lab Ornamental Plant Germplasm Inno, Guangzhou, Peoples R China

期刊名称：PLOS ONE （ 影响因子：3.7； 五年影响因子：3.8 ）

ISSN： 1932-6203

年卷期： 2022 年 17 卷 8 期

页码：

收录情况： SCI

摘要： Hippeastrum is a genus of ornamental plants with large, brightly colored flowers. Due to the very high seed-setting rate of the hybridization of Hippeastrum, the large population of hybrid progeny and the existence of superparent inheritance, it is difficult to trace the origin of the varieties collected from the market during breeding. In this study, we analyzed the chloroplast genomes of Hippeastrum 'Milady', H. alberti, and H. reticulatum using the Illumina NovaSeq sequencing platform and generated full-length sequences of 158,067, 158,067, and 158,522 bp, respectively. All three genomes had the typical tetrad structure. The large single copy, small single copy, and inverted repeat regions of H. reticulatum were observed to be respectively 277, 138, and 20 bp longer than the corresponding regions of H. 'Milady' and H. alberti. The results of comparative analysis of simple sequence repeats (SSRs), Ka/Ks ratios, codon preferences, and complete sequences of chloroplasts of these three taxa and 14 other plant species were as follows. First, the chloroplast genomes of H. 'Milady', H. alberti, and H. reticulatum contain 209, 209, and 211 SSR sites, respectively, most of which (123, 123, and 122, respectively) are single nucleotide repeats. Second, leucine, arginine, and serine are the most frequently used amino acids in the three chloroplast genomes. Third, H. 'Milady', H. alberti, and H. reticulatum are more closely related to Lycoris and Narcissus than to Allium and Agapanthus. Our results will provide information on the study of origins or relatedness of native species, and the identification of cultivars.

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