Genetic structure of Cenococcum geophilum populations in primary successional volcanic deserts on Mount Fuji as revealed by microsatellite markers.
Genetic structure of Cenococcum geophilum populations in primary successional volcanic deserts on Mount Fuji as revealed by microsatellite markers.
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DOI：
10.1111/j.1469-8137.2004.01221.x
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发表时间：
2004-11
期刊：
影响因子：
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通讯作者：
Bingyun Wu;K. Nara;T. Hogetsu
中科院分区：
文献类型：
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作者：
Bingyun Wu;K. Nara;T. Hogetsu
用SSR标记研究了日本富士山东南坡高藤场演替早期火山沙漠中与沙柳相关的一个地球藻种群的遗传结构，以及在富士山较发达地点的另外三个与同一寄主有关的种群的遗传结构。在较发达的植被斑块和较发达的地点，地衣藻的基因丰富度往往较高，这表明随着演替的推进，基因丰富度会增加，因为随着时间的推移，可能会有新的基因类型被引入这些地点。Gotenba和Fujinomiya种群之间存在较高的基因相似性，而Gotenba和Subashiri种群之间没有很高的相似性，这表明Gotenba的地球嗜地杆菌基因是从Fujinomiya方向引入的。戈登巴种群的基因分型明显可分为两组。没有任何中间基因型表明，在这个与早期演替植被相关的嗜地梭菌种群中，没有频繁的重组。
Polymorphic simple sequence repeat (SSR) markers were used to investigate the genetic structure in a Cenococcum geophilum population associated with Salix reinii in an early successional volcanic desert at Gotenba, on the south-eastern slope of Mount Fuji in Japan, and in three other populations associated with the same host at more developed sites on the mountain, one at Fujinomiya and two at Subashiri. The genotype richness of C. geophilum tended to be higher in more developed vegetation patches as well as in more developed sites, suggesting that genotype richness increased with advanced succession because new genotypes might have been introduced into these sites over time. High genotypic similarity was observed between the Gotenba and Fujinomiya populations but not between the Gotenba and Subashiri populations, suggesting that C. geophilum genotypes in Gotenba were introduced from the direction of Fujinomiya. Genotypes in the Gotenba population were clearly distinguishable into two groups. The absence of any intermediate genotype suggests the absence of frequent recombination in this C. geophilum population associated with early successional vegetation.