黄胸鹀近期种群数量急剧下降后的基因组状况

Genomic status of yellow-breasted bunting following recent rapid population decline.

作者信息

Wang Pengcheng, Hou Rong, Wu Yang, Zhang Zhengwang, Que Pinjia, Chen Peng

机构信息

Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, P. R. China.

Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu, 610081, P. R. China.

出版信息

iScience. 2022 Jun 2;25(7):104501. doi: 10.1016/j.isci.2022.104501. eCollection 2022 Jul 15.

DOI:10.1016/j.isci.2022.104501

PMID:35733787

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9207672/

Abstract

Global biodiversity is facing serious threats. However, knowledge of the genomic consequences of recent rapid population declines of wild organisms is limited. Do populations experiencing recent rapid population decline have the same genomic status as wild populations that experience long-term declines? Yellow-breasted Bunting () is a critically endangered species that has been experiencing a recent rapid population decline. To answer the question, we assembled and annotated the whole genome of Yellow-breasted Bunting. Furthermore, we found high genetic diversity, low linkage disequilibrium, and low proportion of long runs of homozygosity in Yellow-breasted Bunting, suggesting that the populations following recent rapid declines have different genomic statuses from the population that experienced long-term population decline.

摘要

全球生物多样性正面临严重威胁。然而，对于野生生物近期种群数量迅速下降的基因组后果的了解却很有限。近期经历种群数量迅速下降的种群，其基因组状态与经历长期下降的野生种群相同吗？黄胸鹀（学名：Emberiza aureola）是一种极度濒危物种，其种群数量近期一直在迅速下降。为了回答这个问题，我们组装并注释了黄胸鹀的全基因组。此外，我们发现黄胸鹀具有高遗传多样性、低连锁不平衡以及低纯合子长片段比例，这表明近期经历种群数量迅速下降后的种群，其基因组状态与经历长期种群数量下降的种群不同。