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The complete chloroplast genome sequence of Taxodium ascendens × T. mucronatum hybrid (Cupressaceae).

ABSTRACT: Taxodium 'Zhongshanshan 401' is an important economic plant with ornamental and ecological values, and has been widely planted in southeastern China. In this study, the complete chloroplast (cp) genome of T. 'Zhongshanshan 401' was sequenced and illustrated to add the more genetic information. The entire cp genome of T. 'Zhongshanshan 401' was 132,037 bp in length with 35.3% overall GC content. The cp genome contained 120 genes, including 83 protein-coding genes, 33 tRNA genes, and four rRNA genes. Fifteen genes contain two exons and two contains three exons. Phylogenetic analysis based on whole cp genome sequences showed that T. 'Zhongshanshan 401' was more closely related to T. mucronatum.

SUBMITTER: Zhang F

PROVIDER: S-EPMC7995817 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:The species of the genus Juniperus L. play an important role in Kazakhstan forest ecosystems and one of them is Juniperus seravschanica Kom. which has been listed as a rare species in the Red Book of Kazakhstan. The distribution area of J. seravschanica extends from Central Asia (Kazakhstan, Uzbekistan, Kyrgyzstan, Tajikistan, and Turkmenistan) to northern and eastern Afghanistan, northern Pakistan, Kashmir, southeastern Iran, and Oman. J. seravschanica occurred in the southern part of Kazakhstan along with the ranges Karatau, Talas Alatau, Kyrgyz Alatau, Chu-Ili, Karzhantau, and Ugam. The distribution area of J. seravschanica is constantly decreasing due to intensive logging, forest fires, and excessive cattle grazing. The species has ecological importance in the stabilization of mountain slopes against erosion, for hydrobiological regulation, and as a significant medicinal herb. The species J. excelsa M. Bieb., J. polycarpos K.Koch (var. polycarpos and var. turcomanica R.P.Adams), and J. seravschanica are morphologically very similar with some difficulties in species identification. For a better understanding of the evolutionary relationship of these species in the Juniperus genus, it is important to obtain genetic information on the highly conserved chloroplast (cp) genome. Due to the conserved genomic structure, the cp genome nucleotide sequences are widely used in species distinguishing and reconstructing phylogenetic relationships. Unfortunately, there are no publicly available nucleotide sequences of cp genomes data for J. polycarpos (var. polycarpos and var. turcomanica), J. excelsa and J. seravschanica. We report the de novo assembly of the J. seravschanica chloroplast genome by applying next-generation sequencing technology based on Illumina NovaSeq 6000. The assembled cp genome of J. seravschanica is 127,609 bp in length and contained 118 genes, including 82 protein-coding genes, 32 transfer RNA genes, and 4 ribosomal RNA genes. In total 152 simple sequence repeats were identified in the chloroplast genome sequence of J. seravschanica. The Bioproject (PRJNA883033), Sequence Read Archive (SRR21673293), and GenBank (OL684343) data were deposited at National Center for Biotechnology Information.

Dataset Information

The complete chloroplast genome sequence of Taxodium ascendens × T. mucronatum hybrid (Cupressaceae).

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