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首页> 外文期刊>International Journal of Medicinal Mushrooms >High Genetic Diversity in Wild Culinary-Medicinal Wood Ear Mushroom, Auricularia polytricha (Mont.) Sacc., in Tropical China Revealed by ISSR Analysis
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High Genetic Diversity in Wild Culinary-Medicinal Wood Ear Mushroom, Auricularia polytricha (Mont.) Sacc., in Tropical China Revealed by ISSR Analysis

机译：ISSR分析揭示了中国热带野生药用木耳菇（Auricularia polytricha（Mont。）Sacc。）的高遗传多样性

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摘要

The genetic diversity of 40 wild Auricularia polytricha strains within ten natural populations in tropical China and five cultivated strains were analyzed by using twelve inter-simple sequence repeat (ISSR) primers. At the species level, the percentage of polymorphic loci (P) = 99.8%, the effective number of alleles (N-e) = 1.3569, Nei's gene diversity (H) = 0.2398, Shannon information index (I) = 0.3896, and total genetic diversity (H-t) = 0.2346 indicate a high level of genetic diversity in wild A. polytricha. At the population level of the wild fungus, P = 43.51%, N-e = 1.2675, H = 0.1702, I = 0.2504. However, the genetic diversity of cultivated strains was the lowest of all populations (N-e = 1.1584, H = 0.0940, I = 0.1440). A moderate degree of genetic differentiation (G(st) = 0.347) among the sampled wild populations was detected based on Nei's gene diversity analysis, suggesting that 65.3% of variation existed within this population. The high genetic variation level within wild populations may mostly result from a low level of gene flow (N-m = 0.9408) and random genetic drift.
机译：通过使用十二个简单序列重复（ISSR）引物分析了中国热带十个自然种群中的40个野生虎耳野生菌株和五个栽培菌株的遗传多样性。在物种一级，多态性位点（P）的百分比= 99.8％，等位基因的有效数量（Ne）= 1.3569，Nei的基因多样性（H）= 0.2398，Shannon信息指数（I）= 0.3896，总遗传多样性（Ht）= 0.2346表明野生曲霉具有较高的遗传多样性。在野生真菌的种群水平上，P = 43.51％，N-e = 1.2675，H = 0.1702，I = 0.2504。然而，栽培菌株的遗传多样性是所有种群中最低的（N-e = 1.1584，H = 0.0940，I = 0.1440）。根据Nei的基因多样性分析，在抽样的野生种群中检测到中等程度的遗传分化（G（st）= 0.347），这表明该种群中存在65.3％的变异。野生种群中较高的遗传变异水平可能主要是由于基因流动水平低（N-m = 0.9408）和随机遗传漂移造成的。

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