期刊
ECOLOGY AND EVOLUTION
卷 11, 期 4, 页码 1729-1740出版社
WILEY
DOI: 10.1002/ece3.7163
关键词
flow cytometry; genome size variation; hybridization; Quercus
资金
- Jiangsu Innovation Engineering Fund [KYCX18_0989]
- Nanjing Forestry University Excellent Doctoral Thesis Fund [2171700124]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- National Natural Science Foundation in China [31370666, 31770699]
- Forestry Innovation Project of Jiangsu [LYSX[2016]49]
The study on four closely related oak species in Zijinshan, China, explored the variability of genome size within and among the species, as well as hybridization events, showing adaptation to the environment. The evolution of genome size in hybrid species was identified as expansion, with hybridization between sections possibly influenced by habitat disturbance. This research enhances understanding of Quercus evolution and aids in establishing guidelines for oak tree ecological protection.
The Quercus species serve as a powerful model for studying introgression in relation to species boundaries and adaptive processes. Coexistence of distant relatives, or lack of coexistence of closely relative oak species, introgression may play a role. In the current study, four closely related oak species were found in Zijinshan, China. We generated a comprehensive genome size (GS) database for 120 individuals of four species using flow cytometry-based approaches. We examined GS variability within and among the species and hybridization events among the four species. The mean GSs of Q. acutissima, Q. variabilis, Q. fabri, and Q. serrata var. brevipetiolata were estimated to be 1.87, 1.92, 1.97, and 1.97 pg, respectively. The intraspecific and interspecific variations of GS observed among the four oak species indicated adaptation to the environment. Hybridization occurred both within and between the sections. A hybrid offspring was produced from Q. fabri and Q. variabilis, which belonged to different sections. The GS evolutionary pattern for hybrid species was expansion. Hybridization between the sections may be affected by habitat disturbance. This study increases our understanding of the evolution of GS in Quercus and will help establish guidelines for the ecological protection of oak trees.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据