Soil phosphorus form affects the advantages that arbuscular mycorrhizal fungi confer on the invasive plant species, Solidago canadensis, over its congener.
Soil phosphorus form affects the advantages that arbuscular mycorrhizal fungi confer on the invasive plant species, Solidago canadensis, over its congener.
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DOI：
10.3389/fmicb.2023.1160631
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发表时间：
2023
影响因子：
5.2
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中科院分区：
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植物与丛枝菌根真菌（AMF）之间的相互作用强烈地受到土壤磷（P）有效性的影响。然而，磷形态如何影响根际AMF多样性，群落组成，以及与本地和入侵植物相关的共现网络，以及这些变化是否反过来影响外来物种的入侵性仍不清楚。在这项工作中，我们进行了温室实验，入侵物种加拿大一枝黄花和它的本地同源S。研究不同形态的磷如何改变AMF群落，并评估这些变化如何与S. canadensis相对于S.向下延伸。植物经受五种不同的P处理：不添加P（对照）、简单无机P（磷酸二氢钠，NaP）、复合无机P（羟基磷灰石，CaP）、简单有机P（腺苷一磷酸，AMP）和复合有机P（肌醇六磷酸，PA）。总的来说，入侵S. canadensis比原生S. decurrens在所有P处理，这种生长优势得到加强时，这些物种生长在CaP和AMP处理。两个一枝黄花物种窝藏不同的AMF群落，土壤磷处理显着改变AMF群落组成。特别是，在AMF多样性、群落组成、拓扑特征和共生网络的关键分类群方面，S。canadensis和S.当土壤磷的优势形态发生变化时，下延物被放大。尽管AMF α多样性、群落结构、共现网络组成与植物表现之间存在显著相关性，但我们发现AMF α多样性和共现网络的关键类群是影响植物生长和入侵S.土壤磷处理之间的差异。这些结果表明，AMF可以赋予入侵植物更大的优势，比本地同源物，这取决于在土壤中的P的形式，并强调多AMF性状在植物入侵的重要作用。
Interactions between plants and arbuscular mycorrhizal fungi (AMF) are strongly affected by soil phosphorus (P) availability. However, how P forms impact rhizosphere AMF diversity, community composition, and the co-occurrence network associated with native and invasive plants, and whether these changes in turn influence the invasiveness of alien species remain unclear. In this work, we performed a greenhouse experiment with the invasive species Solidago canadensis and its native congener S. decurrens to investigate how different forms of P altered the AMF community and evaluate how these changes were linked with the growth advantage of S. canadensis relative to S. decurrens. Plants were subjected to five different P treatments: no P addition (control), simple inorganic P (sodium dihydrogen phosphate, NaP), complex inorganic P (hydroxyapatite, CaP), simple organic P (adenosine monophosphate, AMP) and complex organic P (myo-inositol hexakisphosphate, PA). Overall, invasive S. canadensis grew larger than native S. decurrens across all P treatments, and this growth advantage was strengthened when these species were grown in CaP and AMP treatments. The two Solidago species harbored divergent AMF communities, and soil P treatments significantly shifted AMF community composition. In particular, the differences in AMF diversity, community composition, topological features and keystone taxa of the co-occurrence networks between S. canadensis and S. decurrens were amplified when the dominant form of soil P was altered. Despite significant correlations between AMF alpha diversity, community structure, co-occurrence network composition and plant performance, we found that alpha diversity and keystone taxa of the AMF co-occurrence networks were the primary factors influencing plant growth and the growth advantage of invasive S. canadensis between soil P treatments. These results suggest that AMF could confer invasive plants with greater advantages over native congeners, depending on the forms of P in the soil, and emphasize the important roles of multiple AMF traits in plant invasion.