Plant Communities Rather than Soil Properties Structure Arbuscular Mycorrhizal Fungal Communities along Primary Succession on a Mine Spoil.
Plant Communities Rather than Soil Properties Structure Arbuscular Mycorrhizal Fungal Communities along Primary Succession on a Mine Spoil.
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DOI：
10.3389/fmicb.2017.00719
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发表时间：
2017
影响因子：
5.2
通讯作者：
Rydlová J
中科院分区：
文献类型：
--
作者：
Krüger C;Kohout P;Janoušková M;Püschel D;Frouz J;Rydlová J
初级演替过程中丛枝菌根真菌（AMF）群落聚集的研究迄今很少。因此，在生态系统发展过程中，哪些驱动AMF群落组成的因素是重要的，目前尚不清楚。我们在一个大型废土堆上解决了这个问题，在不同的管理下，它提供了不同演替阶段的场地马赛克。我们选择了24个年龄分别为12年、20年、30年和50年的地点，包括植被自发发育的地点和桤木人工林开垦的地点。在每个样地，我们每年两次取样多年生根茎草（禾本科）根，测定AMF根定植和多样性（使用454测序），测定土壤化学性质和植物群落组成。AMF类群丰富度不受立地年龄的影响，但AMF组成的变化沿时间序列增加。AMF群落不受土壤化学的影响，但与相邻植物群落的组成有关。在4个演替阶段，样地的植物群落结构比AMF群落更明显。结果表明，植物群落演替对不同因子有响应。AMF群落似乎受生物而非非生物因素的影响，并随演替年龄而分化。
Arbuscular mycorrhizal fungal (AMF) community assembly during primary succession has so far received little attention. It remains therefore unclear, which of the factors, driving AMF community composition, are important during ecosystem development. We addressed this question on a large spoil heap, which provides a mosaic of sites in different successional stages under different managements. We selected 24 sites of c. 12, 20, 30, or 50 years in age, including sites with spontaneously developing vegetation and sites reclaimed by alder plantations. On each site, we sampled twice a year roots of the perennial rhizomatous grass Calamagrostis epigejos (Poaceae) to determine AMF root colonization and diversity (using 454-sequencing), determined the soil chemical properties and composition of plant communities. AMF taxa richness was unaffected by site age, but AMF composition variation increased along the chronosequences. AMF communities were unaffected by soil chemistry, but related to the composition of neighboring plant communities of the sampled C. epigejos plants. In contrast, the plant communities of the sites were more distinctively structured than the AMF communities along the four successional stages. We conclude that AMF and plant community successions respond to different factors. AMF communities seem to be influenced by biotic rather than by abiotic factors and to diverge with successional age.