Plant functional group influences arbuscular mycorrhizal fungal abundance and hyphal contribution to soil CO2 efflux in temperate grasslands

Gui, Weiyang; Ren, Haiyan; Li, Nan; Zhang, Yingjun; Cobb, Adam B.; Wilson, Gail W. T.; Sun, Xiao; Hu, Jian; Xiao, Yan; Zhang, Fengge; Yang, Gaowen

doi:10.1007/s11104-018-3789-0

Cited by 14 publications

(9 citation statements)

References 69 publications

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“…In the grassland studied here, the dicotyledonous hosts supported a larger diversity of AMF families, with only taxa from the Claroideoglomeraceae family being more frequent in grass roots. This matches well the previously described higher reliance of grassland forbs on the retrieval of soil nutrients via the absorptive surfaces of AMF hyphae (Unger et al ., ), and the higher reported investment of C resources by forbs into AMF symbionts (Gui et al ., ). We found a similar pattern for AMF taxonomic and phylogenetic diversity, as discussed in the following section.…”

Section: Discussionmentioning

confidence: 97%

“…Published studies have explored the differences in AMF communities that can be explained by the functional traits of plant hosts (Chagnon et al, 2013;L opez-Garc ıa et al, 2017;Neuenkamp et al, 2018). Trait differences are often summarized by the classification of hosts into functional groups (Dassen et al, 2017;Gui et al, 2018). Some studies identify differences of AMF communities between dicotyledonous herbs (which we henceforth call forbs) and grasses (Albarrac ın Orio et al, 2016;Gui et al, 2018), but are mostly based on ad hoc sampling of species present across a range of environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Trait differences are often summarized by the classification of hosts into functional groups (Dassen et al, 2017;Gui et al, 2018). Some studies identify differences of AMF communities between dicotyledonous herbs (which we henceforth call forbs) and grasses (Albarrac ın Orio et al, 2016;Gui et al, 2018), but are mostly based on ad hoc sampling of species present across a range of environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

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Contrasting effects of host identity, plant community, and local species pool on the composition and colonization levels of arbuscular mycorrhizal fungal community in a temperate grassland

et al. 2019

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Summary Arbuscular mycorrhizal fungi (AMFs) are important plant symbionts, but we know little about the effects of plant taxonomic identity or functional group on the AMF community composition. To examine the effects of the surrounding plant community, of the host, and of the AMF pool on the AMF community in plant roots, we manipulated plant community composition in a long‐term field experiment. Within four types of manipulated grassland plots, seedlings of eight grassland plant species were planted for 12 wk, and AMFs in their roots were quantified. Additionally, we characterized the AMF community of individual plots (as their AMF pool) and quantified plot abiotic conditions. The largest determinant of AMF community composition was the pool of available AMFs, varying at metre scale due to changing soil conditions. The second strongest predictor was the host functional group. The differences between grasses and dicotyledonous forbs in AMF community variation and diversity were much larger than the differences among species within those groups. High cover of forbs in the surrounding plant community had a strong positive effect on AMF colonization intensity in grass hosts. Using a manipulative field experiment enabled us to demonstrate direct causal effects of plant host and surrounding vegetation.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contrasting effects of host identity, plant community, and local species pool on the composition and colonization levels of arbuscular mycorrhizal fungal community in a temperate grassland

et al. 2019

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“…At each quadrat, the cover of each species was estimated using the projection method, and the height of each species was measured with a ruler. The species were assigned to plant functional groups according to their belonging to specific life forms (shrub, annual herb, or perennial herb) [24], carbon metabolic pathway (C3 and C4) [25], classification groups (forbs, Asteraceae, Fabaceae, Cyperaceae, or Poaceae) [26], and nutritive value groups (poisonous herb, weed, or forage grass) [27]. The aboveground biomass (AGB) was measured after harvesting, while all tissues of each species were clipped to ground level and stored in a separate envelope.…”

Section: Data Sampling and Measurementsmentioning

confidence: 99%

Effects of Grazing Exclusion on Biomass Growth and Species Diversity among Various Grassland Types of the Tibetan Plateau

Wang

Fan

et al. 2019

Sustainability

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Livestock grazing is an important determinant of species diversity and plant growth. Overgrazing is identified as one of the most important disturbances resulting in grassland degradation. Although many restoration practices have been implemented, grazing exclusion is one of the most effective methods to restore degraded grasslands. We explored the impact of five years of grazing exclusion on plant growth and species diversity in four types of grasslands: temperate steppe (TS), swamp meadow (SM), alpine steppe (AS), and alpine meadow (AM). Our results showed that grazing exclusion increased plant height, coverage, biomass, and species diversity in all four grasslands. The aboveground biomass in AM (180.8%), TS (117.3%), and SW (105.9%) increased significantly more than AS (10.1%). Grazing exclusion in AM had the greatest effect on proportion of palatable species, and the increase in palatable species in AM was higher than that of the other grassland types significantly. Species diversity increased significantly within the enclosure in SM (23.9%) and AM (20.8%). Our results indicate that grazing exclusion is an effective management strategy to restore degraded grasslands and it works best in alpine meadow. This study contributes to the growing theoretical basis for grassland management strategies and has a significant effect on sustainable development for grassland resources and pastoral areas.

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“…This differentiation can, to some extent, be explained by the variation in functional traits of plant hosts (Chagnon et al ., 2013; López‐Garcia et al ., 2017). Such functional variation often is simplified by assigning plant hosts into functional groups, with the recognition of dicotyledonous herbs (henceforth called forbs) and grasses (Dassen et al ., 2017; Gui et al ., 2018) being the most common for temperate grasslands and explaining an important part of AMF community variation (Davison et al ., 2020; Šmilauer et al ., 2020a). However, our understanding of AM symbiosis cannot rely just on the functional properties of plant hosts.…”

Section: Introductionmentioning

confidence: 99%

Host age and surrounding vegetation affect the community and colonization rates of arbuscular mycorrhizal fungi in a temperate grassland

et al. 2021

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Summary Arbuscular mycorrhizal fungi (AMF) are important symbionts for the majority of terrestrial vascular plants, yet the drivers of the compositional variation in AMF communities need to be better understood. What effects does the ontogenetic stage of host plants have and do these effects differ between plant functional groups? Are the AMF communities modified by the properties of surrounding vegetation, such as the proportion of different functional groups or nonmycorrhizal plants ? We addressed these questions in a temperate grassland and studied AMF communities using next‐generation sequencing and light microscopy, evaluating their composition, taxonomic, phylogenetic and functional diversity, functional traits and root colonization levels. We found important differences between AMF communities and their diversity between seedlings and adults which are larger than the differences among host species or between functional groups. The proportion of nonmycorrhizal plants in the surrounding affected AMF community composition and increased its richness. Our results highlight the need for further investigating the existence of a common mycelial networks. The decision to use seedlings for experimental work can affect the results more than the chosen host species.

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Plant functional group influences arbuscular mycorrhizal fungal abundance and hyphal contribution to soil CO2 efflux in temperate grasslands

Cited by 14 publications

References 69 publications

Contrasting effects of host identity, plant community, and local species pool on the composition and colonization levels of arbuscular mycorrhizal fungal community in a temperate grassland

Contrasting effects of host identity, plant community, and local species pool on the composition and colonization levels of arbuscular mycorrhizal fungal community in a temperate grassland

Effects of Grazing Exclusion on Biomass Growth and Species Diversity among Various Grassland Types of the Tibetan Plateau

Host age and surrounding vegetation affect the community and colonization rates of arbuscular mycorrhizal fungi in a temperate grassland

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