RESEARCH ARTICLE The first complete chloroplast genome sequences of Ulmus species by de novo sequencing: Genome comparative and taxonomic position analysis Li-Hui Zuo1,2☯, Ai-Qin Shang3☯, Shuang Zhang1,2, Xiao-Yue Yu1,2, Ya-Chao Ren1,2, Min- Sheng Yang1,2*, Jin-Mao Wang1,2* 1 Institute of Forest Biotechnology, Forestry College, Agricultural University of Hebei, Baoding, PR China, 2 Hebei Key Laboratory for Tree Genetic Resources and Forest Protection, Baoding, PR China, a1111111111 3 Horticulture College, Agricultural University of Hebei, Baoding, PR China a1111111111 a1111111111 ☯ These authors contributed equally to this work.
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[email protected] (JMW) a1111111111 * a1111111111 Abstract Elm (Ulmus) has a long history of use as a high-quality heavy hardwood famous for its resis- OPEN ACCESS tance to drought, cold, and salt. It grows in temperate, warm temperate, and subtropical Citation: Zuo L-H, Shang A-Q, Zhang S, Yu X-Y, regions. This is the first report of Ulmaceae chloroplast genomes by de novo sequencing. Ren Y-C, Yang M-S, et al. (2017) The first The Ulmus chloroplast genomes exhibited a typical quadripartite structure with two single- complete chloroplast genome sequences of Ulmus copy regions (long single copy [LSC] and short single copy [SSC] sections) separated by a species by de novo sequencing: Genome comparative and taxonomic position analysis. pair of inverted repeats (IRs). The lengths of the chloroplast genomes from five Ulmus ran- PLoS ONE 12(2): e0171264. doi:10.1371/journal. ged from 158,953 to 159,453 bp, with the largest observed in Ulmus davidiana and the pone.0171264 smallest in Ulmus laciniata.