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基于简单重复序列区间(ISSR)遗传标记对[物种名称未给出,推测为某种生物,这里用“[物种名称]”表示]的遗传多样性评估。

Assessment of genetic diversity in L. based on inter simple sequence repeat (ISSR) genetic marker.

作者信息

Monfared Mohammad Asadi, Samsampour Davood, Sharifi-Sirchi Gholam Reza, Sadeghi Fatemeh

机构信息

Department of Horticultural Sciences, Faculty of Agriculture, University of Hormozgan, Iran.

出版信息

J Genet Eng Biotechnol. 2018 Dec;16(2):661-667. doi: 10.1016/j.jgeb.2018.04.005. Epub 2018 May 3.

Abstract

Studies on the genetic variation in marginal populations and differentiation between them are essential for assessment of best gene conservation strategies and sampling schemes. In this study, ISSR markers were used to establish the level of genetic relationships and polymorphism 50 genotypes of collected from 6 different regions of Hormozgan province. The ISSR analysis with 9 anchored primers also generated 105 scorable loci, of which 85 were polymorphic (80.95%). Parameters of genetic diversity and its partitioning were calculated. The genetic analysis demonstrated that maintain relatively high genetic diversity (PIC was 0.63, Na was 1.27 and Ho and He were 0.15 and 0.17 respectively). The coefficient of genetic differentiation among populations based on FST equaled 0.20. Genetic identities between population's pairs were high (mean I = 0.88). These values are high as compared with other widespread congener species. Cluster analysis based on the Unweighted Pair Group Method with Arithmetic Averages (UPGMA) revealed 3 main clusters for the ISSR data. The levels of genetic diversity maintained within populations of indicate that an appropriate sampling design for ex situ safeguarding should capture the majority of genetic diversity found within these taxa to help ensure the long term viability of this species. Furthermore, it could be inferred that ISSR markers are suitable tools for the evaluation of genetic diversity and relationships within the .

摘要

对边缘种群的遗传变异及其间的分化进行研究,对于评估最佳基因保护策略和采样方案至关重要。在本研究中,利用ISSR标记来确定从霍尔木兹甘省6个不同地区收集的50个基因型之间的遗传关系水平和多态性。使用9个锚定引物进行的ISSR分析还产生了105个可评分位点,其中85个具有多态性(80.95%)。计算了遗传多样性参数及其分配情况。遗传分析表明,[物种名称]保持着相对较高的遗传多样性(PIC为0.63,Na为1.27,Ho和He分别为0.15和0.17)。基于FST的种群间遗传分化系数等于0.20。种群对之间的遗传同一性较高(平均I = 0.88)。与其他广泛分布的同属物种相比,这些值较高。基于算术平均数的非加权配对组方法(UPGMA)的聚类分析揭示了ISSR数据的3个主要聚类。[物种名称]种群内保持的遗传多样性水平表明,对于迁地保护而言,合适的采样设计应涵盖这些分类群中发现的大部分遗传多样性,以帮助确保该物种的长期生存能力。此外,可以推断ISSR标记是评估[物种名称]内遗传多样性和关系的合适工具。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/015e/6353762/8eda02e4161f/gr1.jpg

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