The complete chloroplast genome of Cycas Szechuanensis, an extremely endangered species. Issue 2 (3rd July 2018)

• Record Type: Journal Article
• Authors: Wang, Yaling; Wang, Zefu; Zhang, Lei; Yang, Xiaoyue
• Is Part Of: Mitochondrial DNA. Volume 3:Issue 2(2018)
• Page Start: 974
• Page End: 975
• Publication Date: 2018-07-03
• Subjects: Complete chloroplast genome -- Cycas szechuanensis -- phylogenetic analysis; Mitochondrial DNA -- Periodicals; 572.869
• DOI: 10.1080/23802359.2018.1507635
• Languages: English
• ISSNs: 2380-2359

Abstract

Abstract: In this study, we determined the complete chloroplast genome of Cycas szechuanensis (Cycadaceae, Cycas ) using the Illumina sequencing data. The genome is 162, 083 bp in length, including a pair of inverted repeats (IRs) of 25, 003 bp each, which are separated by a large single-copy region (LSC) and a small single-copy region (SSC) with the size of 88, 970 and 23, 108 bp, respectively. The genome comprises 131 encoded genes in total, including 86 protein-coding genes (82 PCG species), 8 ribosomal RNA genes (4 rRNA species), and 37 transfer RNA genes (30 tRNA species). The overall GC content of the C. szechuanensis chloroplast genome is 39.42%, while the LSC, SSC, and IRs occupy 38.70, 42.03 and 36.52%, respectively. Based on complete chloroplast genome sequences from 13 species, we reconstructed the phylogenetic relationship of the 13 species and found that C. szechuanensis is closely related to C. debaoensis .