Trophic interactions as determinants of the arbuscular mycorrhizal fungal community with cascading plant-promoting consequences.
Trophic interactions as determinants of the arbuscular mycorrhizal fungal community with cascading plant-promoting consequences.
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营养相互作用作为丛枝菌根真菌群落的决定因素，具有级联植物促进作用
DOI：
10.1186/s40168-020-00918-6
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发表时间：
2020-10-02
期刊：
影响因子：
15.5
通讯作者：
Sun B
中科院分区：
文献类型：
--
作者：
Jiang Y;Luan L;Hu K;Liu M;Chen Z;Geisen S;Chen X;Li H;Xu Q;Bonkowski M;Sun B
背景土壤真菌群落是由复杂多样的真菌群落组成的，其中包括从植物病原菌到互利共生菌的功能多样的物种。后者是为植物提供磷（P）的丛枝菌根真菌（AMF）。虽然植物宿主和非生物参数是已知的结构AMF社区，它仍然在很大程度上是未知的更高的营养水平的生物，包括原生生物和线虫，影响AMF丰度和社区composition.ResultsHere，我们探讨了AMF，食真菌原生生物和线虫，可以部分反映营养相互作用之间的连接，并将这些根际磷动态和植物性能在长期施肥设置。结果表明，有机肥的添加增加了AMF的生物量和食菌线虫的密度，并调整了AMF，食菌原生动物和线虫的群落结构。我们检测到较高丰度的AMF消化优势食真菌线虫Aesthenchoides和Aesthenchusin高有机肥处理相比，无有机肥和低有机肥处理。结构方程模型结合网络分析表明，食菌原生动物和线虫的捕食刺激AMF生物量和修改AMF群落组成。菌根-真菌相互作用催化AMF的殖民化和表达水平的P转运蛋白基因ZMPht 1; 6在玉米根，从而导致在增强plant productivity.ConclusionsOur study highlights the importance of preduction as a key element in shaping the composition and enhancing the biomass of AMF，leading to increased plant performance.因此，我们阐明了AMF、食菌原生生物和线虫之间复杂相互作用的新生物学机制，这些相互作用推动了磷的吸收和植物的性能。视频摘要
BackgroundThe soil mycobiome is composed of a complex and diverse fungal community, which includes functionally diverse species ranging from plant pathogens to mutualists. Among the latter are arbuscular mycorrhizal fungi (AMF) that provide phosphorous (P) to plants. While plant hosts and abiotic parameters are known to structure AMF communities, it remains largely unknown how higher trophic level organisms, including protists and nematodes, affect AMF abundance and community composition.ResultsHere, we explored the connections between AMF, fungivorous protists and nematodes that could partly reflect trophic interactions, and linked those to rhizosphere P dynamics and plant performance in a long-term manure application setting. Our results revealed that manure addition increased AMF biomass and the density of fungivorous nematodes, and tailored the community structures of AMF, fungivorous protists, and nematodes. We detected a higher abundance of AMF digested by the dominant fungivorous nematodesAphelenchoidesandAphelenchusin high manure treatments compared to no manure and low manure treatments. Structural equation modeling combined with network analysis suggested that predation by fungivorous protists and nematodes stimulated AMF biomass and modified the AMF community composition. The mycorrhizal-fungivore interactions catalyzed AMF colonization and expression levels of the P transporter geneZMPht1;6in maize roots, which resulted in enhanced plant productivity.ConclusionsOur study highlights the importance of predation as a key element in shaping the composition and enhancing the biomass of AMF, leading to increased plant performance. As such, we clarify novel biological mechanism of the complex interactions between AMF, fungivorous protists, and nematodes in driving P absorption and plant performance.Video Abstract
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影响因子：
9.7
作者：
Ekelund, F
通讯作者：
Ekelund, F
影响因子：
4.3
作者：
Faust K;Sathirapongsasuti JF;Izard J;Segata N;Gevers D;Raes J;Huttenhower C
通讯作者：
Huttenhower C
影响因子：
4.8
作者：
Clark, JS
通讯作者：
Clark, JS
影响因子：
9.7
作者：
Geisen, Stefan
通讯作者：
Geisen, Stefan
影响因子：
2.2
作者：
Foissner, W
通讯作者：
Foissner, W