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一个基因组导向的气候弹性战略在美国栗子恢复种群的气候弹性

Alexander M Sandercock¹, Jared W Westbrook², Qian Zhang³

¹Genetics, Bioinformatics, and Computational Biology, Virginia Tech, Blacksburg, VA 24060.

Proceedings of the National Academy of Sciences of the United States of America

|July 16, 2024

概括

保护美国栗子 (Castanea dentata) 需要捕捉其适应性遗传多样性. 基因组分析确定了三个种子区,建议每区21-29棵树进行现场保护,以帮助恢复工作.

科学领域:

森林遗传学森林遗传学
保护生物学保护生物学
植物病理学植物病理学

背景情况:

美国栗子 (Castanea dentata) 是由于栗子病 (Cryphonectria parasitica) 功能性灭绝的.
现有的抗病耐药的美国栗子是通过杂交和基因工程开发的.
恢复物种需要纳入适应性基因组多样性,以实现广泛的气候弹性.

研究的目的:

为野生适应性遗传变异的现场保护制定采样建议.
评估在繁殖计划中捕获的野生适应性多样性的程度.
为了指导对抗疫苗的栗子家族的重新引入地点的选择.

主要方法:

在384个野生美国栗子芽的全基因组重新排序.
基因型-环境关联分析以确定适应性等位基因频率.
对269棵逆交繁殖计划树进行基因组分析.

主要成果:

美国栗子的范围可以根据适应性等位基频率分为三个不同的种子区.
据估计,每个种植区需要21到29棵树才能有效地进行现场保护.
繁殖计划已经部分捕获了野生适应性多样性,有可能针对性地重新引入.

结论:

基因组洞察力为抗疫美国栗子提供了ex situ生殖质保护和育种计划.
该策略针对特定的环境,并帮助恢复危树种的规划.
这项研究为保护和恢复其他受威胁的树木种群提供了蓝图.

关键词:

繁殖计划繁殖计划景观基因组学是景观的基因组学.收回回收回收的恢复温带森林温带森林温带森林整个基因组的测序.

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