Preprint Article Version 4 Preserved in Portico This version is not peer-reviewed

The Draft Genome Assembly of the Critically Endangered Nyssa yunnanensis, a Plant Species with Extremely Small Populations Endemic to Yunnan Province, China

Version 1 : Received: 22 May 2020 / Approved: 26 May 2020 / Online: 26 May 2020 (03:58:56 CEST)
Version 2 : Received: 27 May 2020 / Approved: 28 May 2020 / Online: 28 May 2020 (02:51:13 CEST)
Version 3 : Received: 29 May 2020 / Approved: 31 May 2020 / Online: 31 May 2020 (16:52:43 CEST)
Version 4 : Received: 14 August 2020 / Approved: 20 August 2020 / Online: 20 August 2020 (04:20:16 CEST)

How to cite: Mu, W.; Wei, J.; Yang, T.; Fan, Y.; Cheng, L.; Yang, J.; Mu, R.; Liu, J.; Zhao, J.; Sun, W.; Xu, X.; Liu, X.; Drmanac, R.; Liu, H. The Draft Genome Assembly of the Critically Endangered Nyssa yunnanensis, a Plant Species with Extremely Small Populations Endemic to Yunnan Province, China. Preprints 2020, 2020050417 (doi: 10.20944/preprints202005.0417.v4). Mu, W.; Wei, J.; Yang, T.; Fan, Y.; Cheng, L.; Yang, J.; Mu, R.; Liu, J.; Zhao, J.; Sun, W.; Xu, X.; Liu, X.; Drmanac, R.; Liu, H. The Draft Genome Assembly of the Critically Endangered Nyssa yunnanensis, a Plant Species with Extremely Small Populations Endemic to Yunnan Province, China. Preprints 2020, 2020050417 (doi: 10.20944/preprints202005.0417.v4).

Abstract

Nyssa yunnanensis is a deciduous tree species in the family Nyssaceae within the order Cornales. As only eight individual trees and two populations have been recorded in China’s Yunnan province, this species has been listed among China’s national Class I protection species since 1999 and also among 120 PSESP (Plant Species with Extremely Small Populations) in the Implementation Plan of Rescuing and Conserving China’s Plant Species with Extremely Small Populations(PSESP) (2011-2-15). Here, we present the draft genome assembly of N. yunnanensis. Using 10X Genomics linked-reads sequencing data, we carried out the de novo assembly and annotation analysis. The N. yunnanensis genome assembly is 1475 Mb in length, containing 288,519 scaffolds with a scaffold N50 length of 985.59 kb. Within the assembled genome, 799.51 Mb was identified as repetitive elements, accounting for 54.24% of the sequenced genome, and a total of 39,803 protein-coding genes were predicted. With the genomic characteristics of N. yunnanensis available, our study might facilitate future conservation biology studies to help protect this extremely threatened tree species.

Subject Areas

Nyssa yunnanensis; PSESP; genome

Comments (1)

Comment 1
Received: 20 August 2020
Commenter: Weixue Mu
Commenter's Conflict of Interests: Author
Comment: Revised after review, final version of the manuscript.
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