Population genetics and dynamics of the black truffle in a man-made truffle field
Population genetics and dynamics of the black truffle in a man-made truffle field
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DOI：
10.1046/j.1365-2540.2001.00855.x
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发表时间：
2001-04-01
期刊：
影响因子：
3.8
通讯作者：
Raymond, M
中科院分区：
文献类型：
--
作者：
Bertault, G;Roussett, F;Raymond, M
利用微卫星标记和RAPD标记对黑松露在人工培养的黑松露种群的定殖动态进行了研究。块菌领域是由三个树种和菌丝体接种物的三个不同的起源，并进行了监测的前三年的块菌生产。我们发现遗传多样性水平很低。仅在树间水平检测到距离隔离。这可以解释为本地殖民化周围的每棵树促进了树根系统的存在。在更大的空间尺度的欧洲范围内，没有隔离的距离证实了冰川作用对遗传变异的影响，其次是快速的后冰川期人口扩张的假设。此外，收获的块菌的遗传变异的解释接种起源，也不是树种。我们的研究质疑人工接种真菌菌丝体的树根系统的真实的影响。
The colonization dynamics of the black truffle in an artificial field were assessed through analyses of microsatellite and RAPD markers. The truffle field was composed of three tree species and mycelial inoculum of three different origins, and was monitored for the first three years of truffle production. We found very low levels of genetic diversity. Isolation by distance was detected only at the between-tree level. This could be interpreted as local colonization around each tree facilitated by the presence of the tree root system. At the larger spatial scale of the European range, the absence of isolation by distance corroborates the hypothesis of an impact of glaciation on genetic variation, followed by rapid postglaciation demographic expansion. In addition, genetic variation of harvested truffles was explained by neither inoculation origin, nor tree species. Our study questions the real impact of manmade inoculation of tree root systems with fungal mycelia.