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首页> 外文期刊>Journal of genetics >Genetic diversity and population structure of endangered Aquilaria malaccensis revealed potential for future conservation
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Genetic diversity and population structure of endangered Aquilaria malaccensis revealed potential for future conservation

机译：濒危马尾沉香的遗传多样性和种群结构揭示了其未来保存潜力

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摘要

The endangered Aquilaria malaccensis, is an important plant with high economic values. Characterization of genetic diversity and population structure is receiving tremendous attention for effective conservation of genetic resources. Considering important repositories of biological diversity, the genetic relationships of 127 A. malaccensis accessions from 10 home gardens of three states of northeast India were assessed using amplified fragment length polymorphism (AFLP). Of the 1153 fragments amplified with four AFLP primer combinations, 916 (79.4%) were found to be polymorphic. Polymorphic information content (PIC) and marker index (MI) of each primer combination correlate significantly with the number of genotypes resolved. Overall, a high genetic diversity (avg. 71.85%) was recorded. Further, high gene flow (N-m: 3.37), low genetic differentiation (F-ST: 0.069) and high within population genetic variation (93%) suggests that most of the genetic diversity is restricted within population. Neighbour joining (NJ), principal coordinate analysis (PCoA) and Bayesian-based STRUCTURE grouped all the accessions in two clusters with significant intermixing between populations, therefore, revealed that two genetically distinct gene pools are operating in the A. malaccensis populations cultivated in home gardens. Based on the various diversity inferences, five diverse populations (JOH, FN, HLF, DHM and ITN) were identified, which can be potentially exploited to develop conservation strategies for A. malaccensis.
机译：濒临灭绝的沉香，是具有高经济价值的重要植物。遗传多样性和种群结构的特征正在受到有效保护遗传资源的极大关注。考虑到重要的生物多样性资源库，使用扩增片段长度多态性（AFLP）评估了印度东北三州10个家庭花园中127种马六甲曲霉种的遗传关系。用四种AFLP引物组合扩增的1153个片段中，有916个（79.4％）是多态的。每种引物组合的多态信息含量（PIC）和标记指数（MI）与解析的基因型数量显着相关。总体而言，记录到的遗传多样性很高（平均为71.85％）。此外，高基因流量（N-m：3.37），低遗传分化（F-ST：0.069）和群体内遗传变异高（93％）表明，大多数遗传多样性都局限于群体内。邻居加入（NJ），主坐标分析（PCoA）和基于贝叶斯的结构将所有种分为两个簇，种群之间存在显着混合，因此，揭示了两个遗传上不同的基因库正在家养的马六甲种群中运行。花园。根据各种多样性的推论，确定了五个不同的种群（JOH，FN，HLF，DHM和ITN），可以将其潜在地用于开发马六酸拟南芥的保护策略。

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