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首页> 外文期刊>Ecological research >Canopy tree species and openness affect foliar endophytic fungal communities of understory seedlings
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Canopy tree species and openness affect foliar endophytic fungal communities of understory seedlings

机译：冠层树种和开放度影响林下幼苗叶片内生真菌的群落

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There is growing evidence demonstrating the diversity of foliar endophytic fungi and their ecological roles in the survival of tree seedlings. However, the factors that shape fungal communities in tree seedlings within natural forest ecosystems remain poorly understood. Here, we evaluated the composition of foliar endophytic fungi growing in current-year seedlings of Cornus controversa and Prunus grayana in a cool temperate deciduous forest through a seed-sowing experiment and fungal isolation. The composition of endophytic fungi was affected by canopy tree species, canopy openness, and time after germination. In total, 27 and 22 fungal taxa were isolated from C. controversa and P. grayana seedlings, respectively. The dominant fungal taxa in both seedling species were Colletotorichum spp., and their isolation frequencies were higher under C. controversa canopies than under P. grayana canopies; the frequencies also increased with time after germination. These results suggest that overstory tree species strongly influences the endophytic fungal communities of understory seedlings.
机译：越来越多的证据表明叶内生真菌的多样性及其在树苗存活中的生态作用。但是，影响自然森林生态系统中树木幼苗中真菌群落的因素仍然知之甚少。在这里，我们通过种子播种实验和真菌分离评估了在凉爽的温带落叶林中山茱con和灰李当年幼苗中生长的叶片内生真菌的组成。内生真菌的组成受冠层树种，冠层开放度和发芽后时间的影响。总共分别从C. controversa和P. grayana幼苗中分离出27和22个真菌类群。两种幼苗中的优势真菌类群均为炭疽菌，在C. controversa林冠下的隔离频率高于P. grayana林冠下的隔离频率。发芽后频率也随时间增加。这些结果表明，过高的树种强烈地影响了低层幼苗的内生真菌群落。

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