Abstract

Nannoglottis ravida is an extremely endangered species in the Qinghai-Tibet Plateau. Based on the second-generation high-throughput genome sequencing, we assembled the plastome of this species. The length of the total plastome is 152,324 bp with a typical quadripartite structure including a large single-copy region of 83,708 bp, a small single-copy region of 29,882 bp and two reverse repeat regions of 19,367 bp respectively. A total of 131 genes were annotated including 85 protein-coding genes (PCG), 36 tRNA genes, 8 rRNA genes and 2 pseudogenes. The constructed phylogenetic tree with other species of two tribes Senecioneae and Astereae based on plastomes suggests that N. ravida has a close relationship with the Astereae, but diverged early from this tribe.

摘要

Nannoglottis ravida是青藏高原极度濒危的物种。基于第二代高通量基因组测序，我们组装了该物种的质体。整个质体组的长度为152,324 bp，具有典型的四方结构，包括一个大的单拷贝区域83,708 bp，一个小的单拷贝区域29,882 bp和两个反向重复区域19,367 bp。总共注释了131个基因，包括85个蛋白质编码基因（PCG），36个tRNA基因，8个rRNA基因和2个假基因。与其他物种基于plastomes两个部落千里光和紫菀族的构建系统发育树显示，N. ravida与紫菀族有着密切的关系，但是从这个部落早期分歧。