Forest tree growth is linked to mycorrhizal fungal composition and function across Europe.
Forest tree growth is linked to mycorrhizal fungal composition and function across Europe.
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DOI：
10.1038/s41396-021-01159-7
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发表时间：
2022-05
期刊：
影响因子：
--
通讯作者：
Averill C
中科院分区：
文献类型：
--
作者：
Anthony MA;Crowther TW;van der Linde S;Suz LM;Bidartondo MI;Cox F;Schaub M;Rautio P;Ferretti M;Vesterdal L;De Vos B;Dettwiler M;Eickenscheidt N;Schmitz A;Meesenburg H;Andreae H;Jacob F;Dietrich HP;Waldner P;Gessler A;Frey B;Schramm O;van den Bulk P;Hensen A;Averill C
大多数树木与外生菌根真菌（EMF）形成共生关系，影响对限制生长的土壤资源的获取。围隔实验一再表明，电磁场物种对植物发育的影响不同，但这些影响是否涟漪影响整个森林的生长仍然未知。在这里，我们测试了EMF组成和功能基因相对于树木生长的知名驱动因素的变化的影响，通过将成对的分子EMF调查与15个欧洲国家的高分辨率森林资源清查数据相结合。我们发现，电动势组成与树木生长速度的三倍差异，即使在控制树木生长的主要非生物驱动因素。快速树木生长与EMF社区窝藏高无机，但低有机氮的收购基因比例和EMF形成接触与中距离边缘勘探类型。这些研究结果表明，电动势组成是一个强大的生物指标的潜在驱动力的树木生长和/或森林电动势社区的变化导致树木生长的差异。虽然现在确定因果关系或方向性可能还为时过早，但我们的研究是第一个将森林微生物组关键组成部分内的精细尺度变化与大陆尺度的生态系统功能联系起来的研究之一。
Most trees form symbioses with ectomycorrhizal fungi (EMF) which influence access to growth-limiting soil resources. Mesocosm experiments repeatedly show that EMF species differentially affect plant development, yet whether these effects ripple up to influence the growth of entire forests remains unknown. Here we tested the effects of EMF composition and functional genes relative to variation in well-known drivers of tree growth by combining paired molecular EMF surveys with high-resolution forest inventory data across 15 European countries. We show that EMF composition was linked to a three-fold difference in tree growth rate even when controlling for the primary abiotic drivers of tree growth. Fast tree growth was associated with EMF communities harboring high inorganic but low organic nitrogen acquisition gene proportions and EMF which form contact versus medium-distance fringe exploration types. These findings suggest that EMF composition is a strong bio-indicator of underlying drivers of tree growth and/or that variation of forest EMF communities causes differences in tree growth. While it may be too early to assign causality or directionality, our study is one of the first to link fine-scale variation within a key component of the forest microbiome to ecosystem functioning at a continental scale.
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