Project description:Atraphaxis jrtyschensis (Polygonacae) is an endangered desert shrub endemic to China in Xinjiang province with great ecological importance for sand fixation. However, its genomic resources are still very limited. Here, we generated the first chloroplast (cp) genome of A. jrtyschensis using genome skimming sequencing. The whole cp genome is 164,192 bp and comprises 130 genes, including 83 protein-coding genes, 37 tRNA genes, 8 rRNA genes, and 2 pseudogenes (rpl23). The overall GC content of A. jrtyschensis cp genome is 37.5%. The phylogenic analysis placed A. jrtyschensis at the base of Trib Rumiceae, which contained the genera Rheum and Oxyria. This study will be useful for future researches to investigate the conservation genetics and potential applications in sand fixation of the endangered desert shrub.
Project description:Alhagi sparsifolia is a sand-resistant subshrub and food resource for camels in the desert and semi-desert areas of Central Asia. In China, this is the olny Alhagi species and it is restricted in the Northwestern region. Its complete chloroplast genome was sequenced using the Illumina Hiseq X-Ten platform. The genome lacks an inverted repeat (IR) region, containing 74 protein-coding genes, 30 tRNAs genes, and four rRNAs. The overall GC content is 43.6%. Based on the chloroplast genome sequence, a maximum-likelihood (ML) tree was constructed along with its 15 taxa, indicating that A. sparsifolia belong to the tribe Hedysareae, which nested in IRLC group of the subfamily Papilionoideae (Fabaceae).
Project description:Salix psammophila C. Wang & Chang Y. Yang is a desert plant species distributed in Northwest China. Here, we report the complete choroplast genome sequences in order to enrich its genetic resource. The total genome is 155,278 bp in length and contains a typical quadripartite structure, including a large single copy (LSC) region of 84,457 bp, a small single copy (SSC) region of 15,891 bp, and a pair of inverted repeats (IRs) of 27,465 bp. There were 130 genes in the genome, including 85 protein-coding genes, 37 tRNA genes and eight rRNA genes. The overall CG content in the plastome of S. psammophila is 36.72%. The phylogenetic tree based on 18 complete plastomes of Salicaceae support close relationships among S. psammophila, Salix taoensis, and Salix rehderiana.
Project description:Salsola abrotanoides, one of the dominant plant species of desert vegetation, adapts well to the arid, saline, and alkaline environment in the Qinghai-Tibetan Plateau. Here, we reported the complete chloroplast sequence and characters of S. abrotanoides based on the Illumina NovaSeq Platform. The chloroplast genome is 151,622 bp in length, containing a pair of inverted repeated (IR) regions of 23,701 bp, a large single copy (LSC) region of 84,658 bp, and a small single copy (SSC) region of 19,562 bp. And the chloroplast genome sequence encodes 130 genes totally, including 85 mRNA genes, 37 tRNA genes, and 8 rRNA genes. S. abrotanoides is the first species of Genus Salsola and the chloroplast sequence will provide a valuable resource for the phylogenetic studies of Chenopodiaceae.
Project description:Acacia crassicarpa (Fabaceae), a nitrogen-fixing tree species, is critically important for coastal protection in southeast China. In this study, we report the complete chloroplast genome sequence of A. crassicarpa, with a length of 176,493 bp. It contains a pair of inverted repeats (IR 39,851 bp), a large single-copy region (LSC 91,869 bp), and a small single-copy region (SSC 4,922 bp). The complete genome comprises 138 genes, including 93 protein-coding genes, 37 tRNA, and 8 rRNA genes. Our phylogenetic analysis reveals that A. crassicarpa is closely related to A. podalyriifolia and A. dealbata.
Project description:Taxillus chinensis (DC) Danser, which is a hemiparasitic shrub distributed in southern China and Southeast Asian countries, is wildly used in various traditional Chinese medicine prescriptions. In this study, the complete chloroplast genome of the T. chinensis was assembled from the whole genome Illumina sequencing data. The complete plastome is a typical quadripartite structure with a length of 121,305 bp, which contained two inverted repeats (IRs) of 22,460 bp separated by a large single-copy (LSC) and a small single copy (SSC) of 70,295 bp and 6090 bp, respectively. The plastome contains 106 genes, comprising 66 protein-coding genes, 28 tRNA genes, eight rRNA genes, and four processed pseudogenes. The overall GC content of the plastome is 37.4%, which is unevenly distributed across the whole chloroplast genome. The phylogenetic analysis shows that T. chinensis was closely related to the congeneric species T. sutchuenensis.
Project description:Scurrula notothixoides (Loranthaceae) is a hemiparasitic shrub distributed in forest margins of Southeast Asian countries. Here, we report and characterize the complete plastid genome sequence of S. notothixoides in an effort to provide genomic resources useful for the phylogenetic studies for Santalales. The complete plastome is 123,810 bp in length and contains the typical structure and gene content of angiosperm plastomes, including two inverted repeat (IR) regions of 23,101 bp, a large single copy (LSC) region of 71,448 bp and a small single copy (SSC) region of 6160 bp. The plastome contains 88 genes, consisting of 61 unique protein-coding genes, 23 unique tRNA genes and four unique rRNA genes. The overall A/T content in the plastome of S. notothixoides is 62.7%. Phylogenetic analyses were performed using the entire plastome, including spacers, introns, etc. and we recovered that S. notothixoides and Taxillus sutchuenensis was closely related. The complete plastome sequence of S. notothixoides will provide a useful resource for the phylogenetic studies for Santalales.
Project description:Butea monosperma, an importantmedicinal plantin Fabaceae, is mainly distributed in southern Asia. In this study, we reported the complete chloroplast (cp) genome of B. monosperma assembled with Illumina sequencing data. The whole cp genome of this species is 151,925 bp in length, consisting of two inverted repeat regions (IR, 25,083 bp), one large single-copy region (LSC, 83,541 bp), and one small single-copy region (SSC, 18,218 bp).A total of 128 genes were annotated for the chloroplast genome, including 83 protein-coding genes, 37 tRNAs and 8 rRNAs. Phylogenetic analysis indicated that B. monosperma was closely related to the genus Lespedeza.
Project description:Astragalus melilotoides Pall. 1776 is a perennial leguminous forage, widely distributed in northern China, with cold, drought and disease resistance characteristics. Here, we determined the complete chloroplast (cp) genome sequence of A. melilotoides. It was 123,827 bp in length and 36.97% GC content with IR loss. The cp genome contained 110 complete genes, including 76 protein-coding genes, 30 tRNA genes, and four rRNA genes. A maximum likelihood (ML) phylogenetic tree revealed that A. melilotoides was related to A. americanus, A. gummifer, A. mongholicus, A. nakaianus, A. mongholicus var. nakaianus, and A. membranaceus var. membranaceus. The cp genome analysis of A. melilotoides will provide a reference for the phylogenetic study of Astragalus in the future.
Project description:Begonia ferox C.I Peng & Yan Liu (2013) was rated as endangered according to Red List of Chinese Plants. In this study, we report the complete chloroplast genome of B. ferox. The chloroplast genome is 169,114 bp in length as the circular, with the GC content of 35.5%, composed by a large single-copy (LSC) region of 75,887 bp, a small single-copy (SSC) region of 18,105 bp, and two inverted repeat regions (IRs) of 37,561 bp in each. The genome comprises 174 encoded genes in total, including 114 protein-coding genes, eight ribosomal RNA genes, and 52 transfer RNA genes. Phylogenetic analysis indicated that B. ferox is genetically closest to B. gulongshanensis.