Cui Bei, Vu Dinh Duy, Vu Dinh Giap, Bui Thi Tuyet Xuan, Rahman Siddiq Ur, Pham Mai Phuong, Nguyen Minh Tam, Nguyen Van Sinh, Shah Syed Noor Muhammad, Tran Viet Ha
Key Comprehensive Laboratory of Forestry, College of Forestry, Northwest A & F University, Yang Ling 712100, China.
Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
Open Life Sci. 2022 Apr 5;17(1):323-332. doi: 10.1515/biol-2022-0037. eCollection 2022.
Lecomte (Lauraceae), an economically important forest tree, is distributed in the tropical forests of central and northern Vietnam, which has been threatened in recent decades due to the destruction of its habitat and over-exploitation. The genetic diversity and population structure of the species have not been fully evaluated. We used a set of 15 microsatellites to analyze 161 adult trees from 9 different populations, representing the geographical distribution of . Ninety-two different alleles were identified. Here our results showed a low genetic diversity level with an average = 0.246 and = 0.262, and a high level of genetic differentiation ( = 0.601). The bottleneck tests indicated evidence of a reduction in the population size of the two populations (TC and CP). Additionally, all three clustering methods (Bayesian analysis, principal coordinate analysis, and Neighbor-joining tree) were identified in the two genetic groups. The Mantel test showed a significant positive correlation between genetic distance and geographic distance ( = 0.7331). This study will provide a platform for the conservation of both in and plans.
琼楠（樟科）是一种具有重要经济价值的林木，分布于越南北部和中部的热带森林中，近几十年来，由于栖息地遭到破坏和过度开发，该物种受到了威胁。其遗传多样性和种群结构尚未得到充分评估。我们使用一组15个微卫星标记对来自9个不同种群的161株成年树木进行了分析，这些种群代表了琼楠的地理分布范围。共鉴定出92个不同的等位基因。我们的研究结果显示，琼楠的遗传多样性水平较低，平均等位基因丰富度（AR）= 0.246，期望杂合度（He）= 0.262，且遗传分化程度较高（Fst = 0.601）。瓶颈效应检验表明，两个种群（TC和CP）的种群大小出现了缩减迹象。此外，三种聚类方法（贝叶斯分析、主坐标分析和邻接树）均将琼楠分为两个遗传组。Mantel检验显示，遗传距离与地理距离之间存在显著正相关（r = 0.7331）。本研究将为琼楠的原地保护和迁地保护提供一个平台。
