Nitrogen deposition and precipitation induced phylogenetic clustering of arbuscular mycorrhizal fungal communities

Chen, Yongliang; Xu, Zhiling; Xu, Tianle; Veresoglou, Stavros D.; Yang, Gaowen; Chen, Baodong

doi:10.1016/j.soilbio.2017.08.024

Cited by 94 publications

(76 citation statements)

References 64 publications

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“…Firstly, the two genera, Glomus and Glaroiseoglomus , dominated in the AM fungal community (Figure a; Table S2). This result is in agreement with previous studies in temperate grasslands (Chen et al., , ; Kim et al., ; Li et al., ). No significant differences in the relative abundance of two dominant genera between ambient N and N‐addition plots were observed, irrespective of S. krylovii or A. frigida (Figure a).…”

Section: Discussionsupporting

confidence: 94%

Arbuscular mycorrhizal fungal communities associated with two dominant species differ in their responses to long‐term nitrogen addition in temperate grasslands

Zheng

et al. 2018

Functional Ecology

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Arbuscular mycorrhizal (AM) fungi are important components of grassland ecosystems and are sensitive to enhanced atmospheric nitrogen (N) deposition. Enhanced N deposition has been widely reported to reduce species richness and alter species composition across different types of grasslands world‐wide. Despite extensive studies on effects of N deposition on AM fungal communities of grasslands, few studies have specifically focused on effects of N deposition on AM fungi associated with dominant species in grasslands. We investigated long‐term (12‐year) effects of N addition (80 kg ha−1 year−1) on AM fungal community richness in roots and rhizosphere biomass of two dominant plant species (forb Artemisia frigida and grass Stipa krylovii) in temperate steppes of northern China. We found that AM fungi associated with the two dominant plant species differed in their responses to N addition. Nitrogen addition led to a significant reduction in AM fungal richness colonized in roots, and biomass in the rhizosphere of A. frigida, while N addition had little impacts on AM fungi colonized in roots and rhizosphere of S. krylovii. Nitrogen addition significantly reduced AM fungal colonization in roots and AM fungal spore density in the rhizosphere soils of A. frigida. In contrast, N addition had no effect on AM fungal colonization in roots and spore density in the rhizosphere of S. krylovii. Nitrogen addition markedly suppressed photosynthetic rates in A. frigida due to excessive foliar accumulation of manganese. The N‐induced reduction in photosynthetic rates reduced allocation of C into roots in A. frigida, leading to a lower root/shoot ratio, and suppression of AM fungal community associated with A. frigida. The inhibition of AM fungi would render A. frigida less competitive in terms of acquisition of mineral nutrients in soils, thus contributing to its loss in the steppe community under conditions of elevated N deposition. These findings provide a mechanistic explanation for N‐evoked differential responses of AM fungal communities associated with A. frigida and S. krylovii by linking soil properties and host plants to AM fungal communities. A http://onlinelibrary.wiley.com/doi/10.1111/1365-2435.13081/suppinfo is available for this article.

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Section: Discussionsupporting

confidence: 94%

Arbuscular mycorrhizal fungal communities associated with two dominant species differ in their responses to long‐term nitrogen addition in temperate grasslands

Zheng

et al. 2018

Functional Ecology

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“…; Chen et al . ), and the southern sites experienced much higher nitrogen deposition load than the Swedish sites (France: 12.09 kg ha −1 , Germany: 15.10 kg ha −1 versus Sweden: 5.28 kg ha −1 ). Thus, northern Swedish soil may have contained less soil pathogens and more mycorrhizal fungi, which may have enhanced seedling emergence.…”

Section: Discussionmentioning

confidence: 95%

Plant–soil feedbacks of forest understorey plants transplanted in nonlocal soils along a latitudinal gradient

Frenne

Wasof

et al. 2019

Plant Biol J

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Climate change is driving movements of many plants beyond, as well as within, their current distributional ranges. Even migrant plants moving within their current range may experience different plant-soil feedbacks (PSF) because of divergent nonlocal biotic soil conditions. Yet, our understanding to what extent soil biotic conditions can affect the performance of within-range migrant plants is still very limited.

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“…d), even though plant species richness declined with N enrichment. These results do not support other studies showing a decline in AM fungal richness with increasing soil N availability (Egerton‐Warburton & Allen, ; Camenzind et al ., ; Chen et al ., ; Williams et al ., ) and positive relationships between AM fungal and plant species richness (Landis et al ., ; Liu et al ., ; Hiiesalu et al ., ). However, our findings are in line with a study in another alpine meadow on the Tibetan Plateau, where addition (1.5–7.5 g N m −2 yr −1 ) of different N forms (ammonium, nitrate or combined) generally increased AM fungal diversity in the soil (Zheng et al ., ).…”

Section: Discussionmentioning

confidence: 99%

“…Theoretical models predict that AM fungal community structure and function should be very sensitive to changes in carbon, N and P stoichiometry (Johnson, 2010). Numerous field studies have shown that increased N availability can reduce the abundance and diversity of AM fungal communities (Egerton-Warburton & Allen, 2000;van Diepen et al, 2010;Camenzind et al, 2014;Chen et al, 2017;Williams et al, 2017), but neutral or even positive effects have also been observed in some cases (e.g. Egerton-Warburton et al, 2007;van Diepen et al, 2011;Zheng et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of arbuscular mycorrhizal fungal community structure and functioning along a nitrogen enrichment gradient in an alpine meadow ecosystem

et al. 2018

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Nitrogen (N) availability is increasing dramatically in many ecosystems, but the influence of elevated N on the functioning of arbuscular mycorrhizal (AM) fungi in natural ecosystems is not well understood. We measured AM fungal community structure and mycorrhizal function simultaneously across an experimental N addition gradient in an alpine meadow that is limited by N but not by phosphorus (P). AM fungal communities at both whole-plant-community (mixed roots) and single-plant-species (Elymus nutans roots) scales were described using pyro-sequencing, and the mycorrhizal functioning was quantified using a mycorrhizal-suppression treatment in the field (whole-plant-community scale) and a glasshouse inoculation experiment (single-plant-species scale). Nitrogen enrichment progressively reduced AM fungal abundance, changed AM fungal community composition, and shifted mycorrhizal functioning towards parasitism at both whole-plant-community and E. nutans scales. N-induced shifts in AM fungal community composition were tightly linked to soil N availability and/or plant species richness, whereas the shifts in mycorrhizal function were associated with the communities of specific AM fungal lineages. The observed changes in both AM fungal community structure and functioning across an N enrichment gradient highlight that N enrichment of ecosystems that are not P-limited can induce parasitic mycorrhizal functioning and influence plant community structure and ecosystem sustainability.

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Nitrogen deposition and precipitation induced phylogenetic clustering of arbuscular mycorrhizal fungal communities

Cited by 94 publications

References 64 publications

Arbuscular mycorrhizal fungal communities associated with two dominant species differ in their responses to long‐term nitrogen addition in temperate grasslands

Arbuscular mycorrhizal fungal communities associated with two dominant species differ in their responses to long‐term nitrogen addition in temperate grasslands

Plant–soil feedbacks of forest understorey plants transplanted in nonlocal soils along a latitudinal gradient

Dynamics of arbuscular mycorrhizal fungal community structure and functioning along a nitrogen enrichment gradient in an alpine meadow ecosystem

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