Diversity of arbuscular mycorrhiza fungi in rhizosphere soil and roots in Vetiveria zizanioides plantation chronosequence in coal gangue heaps

Gu, Tianyue; Mao, Yuanyuan; Chen, Chao; Yong, Wang; Qi, Lu; Wang, Huaqiu; Cheng, Wei

doi:10.1007/s13199-022-00829-0

Cited by 5 publications

(5 citation statements)

References 68 publications

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“…2 ). These results are consistent with most previous findings [ 7 , 9 , 32 , 33 ]. By contrast, the non-significant difference reported by Djotan et al [ 10 ] between the root and surrounding soil AMF communities associated with Cj may be a result of the small sample size and/or sampling season.…”

Section: Discussionsupporting

confidence: 94%

Paired Root-Soil Samples and Metabarcoding Reveal Taxon-Based Colonization Strategies in Arbuscular Mycorrhizal Fungi Communities in Japanese Cedar and Cypress Stands

2023

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Arbuscular mycorrhizal fungi (AMF) in the roots and soil surrounding their hosts are typically independently investigated and little is known of the relationships between the communities of the two compartments. We simultaneously collected root and surrounding soil samples from Cryptomeria japonica (Cj) and Chamaecyparis obtusa (Co) at three environmentally different sites. Based on molecular and morphological analyses, we characterized their associated AMF communities. Cj was more densely colonized than Co and that root colonization intensity was significantly correlated with soil AMF diversity. The communities comprised 15 AMF genera dominated by Glomus and Paraglomus and 1443 operational taxonomic units (OTUs) of which 1067 and 1170 were in roots and soil, respectively. AMF communities were significantly different among sites, and the root AMF communities were significantly different from those of soil at each site. The root and soil AMF communities responded differently to soil pH. At the genus level, Glomus and Acaulospora were abundant in roots while Paraglomus and Redeckera were abundant in soil. Our findings suggest that AMF colonizing roots are protected from environmental stresses in soil. However, the root-soil-abundant taxa have adapted to both environments and represent a model AMF symbiont. This evidence of strategic exploitation of the rhizosphere by AMF supports prior hypotheses and provides insights into community ecology.

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Section: Discussionsupporting

confidence: 94%

Paired Root-Soil Samples and Metabarcoding Reveal Taxon-Based Colonization Strategies in Arbuscular Mycorrhizal Fungi Communities in Japanese Cedar and Cypress Stands

2023

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“…Our findings support a report that both stochastic and deterministic processes determine the dynamics of the AMF community (Dumbrell et al 2010 ). Previous studies of AMF communities in the two habitats can be divided into two groups based on their findings regarding OTU richness in roots vs. soils: in one, the roots had higher OTU richness than the soil (Wang et al 2015 ; Berruti et al 2017 ; Mahmoudi et al 2019 ; Djotan et al 2023 ), while in the other, the soil had higher OTU richness than the roots (Xu et al 2017 ; Faggioli et al 2019 ; Gu et al 2022 ; Djotan et al 2022 ; Faghihinia et al 2022 ). These studies were carried out in different systems and cannot reveal the dynamics of OTU richness in or between the roots and soils of host plants.…”

Section: Discussionmentioning

confidence: 99%

“…Arbuscular mycorrhizal fungi (AMF) live simultaneously inside and outside of host plant roots to enable functional mycorrhizal symbiosis. In some studies of AMF in plants, the roots had higher operational taxonomic unit (OTU) richness than the soil (Wang et al 2015 ; Berruti et al 2017 ; Mahmoudi et al 2019 ) or vice versa (Xu et al 2017 ; Faggioli et al 2019 ; Gu et al 2022 ; Faghihinia et al 2022 ). These previous studies provide insights into the OTU richness of AMF communities in roots and soil but cannot further our understanding of AMF community dynamics in the roots and surrounding soils of host plants, particularly because most were single-sampling studies carried out independently in different environments using different methodologies.…”

Section: Introductionmentioning

confidence: 99%

Year-round dynamics of arbuscular mycorrhizal fungi communities in the roots and surrounding soils of Cryptomeria japonica

Djotan,

Matsushita,

Fukuda

2024

Mycorrhiza

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Arbuscular mycorrhizal fungi (AMF) live simultaneously inside and outside of host plant roots for a functional mycorrhizal symbiosis. Still, the year-round dynamics and relationships between soil properties and AMF communities of trees in forest ecosystems remain unclear. We collected paired root and soil samples of the same Cryptomeria japonica trees at two forest sites (five trees at each site) every 2 months over a year. Total DNA was extracted from roots and soil separately and soil physicochemical properties were measured. With Illumina’s next-generation amplicon sequencing targeting the small subunit of fungal ribosomal DNA, we clarified seasonal dynamics of soil properties and AMF communities. Soil pH and total phosphorus showed significant seasonality while total carbon, nitrogen, and C/N did not. Only pH was a good predictor of the composition and dynamics of the AMF community. The total AMF community (roots + soil) showed significant seasonality because of variation from May to September. Root and soil AMF communities were steady year-round, however, with similar species richness but contained significantly different AMF assemblages in any sampling month. Despite the weak seasonality in the communities, the top two dominant OTUs showed significant but different shifts between roots and soils across seasons with strong antagonistic relationships. In conclusion, few dominant AMF taxa are dynamically shifting between the roots and soils of C. japonica to respond to seasonal and phenological variations in their microhabitats. AMF inhabiting forest ecosystems may have high environmental plasticity to sustain a functional symbiosis regardless of seasonal variations that occur in the soil.

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“…In agreement with our prediction that AM and EM fungal community composition in the mixture would shift due to changes in soil physicochemical properties and litter quality. Previous studies demonstrate that the identities of mixed species are determinant of AMF community in rhizosphere soil ( Mummey and Rillig, 2006 ; Turrini et al, 2016 ; Ji et al, 2021 ) and changes in soil properties result in shifts in mycorrhizal fungal communities ( Avis et al, 2003 ; Roy et al, 2017 ; Chen et al, 2018 ; Lu et al, 2020 ; Gu et al, 2022 ). We found strikingly differences in the AMF communities between M-AL and P-A stands, as well as in the EMF communities between M-AS and P-S stands ( Figure 2 ).…”

Section: Discussionmentioning

confidence: 99%

Mixed conifer-broadleaf trees on arbuscular mycorrhizal and ectomycorrhizal communities in rhizosphere soil of different plantation stands in the temperate zone, Northeast China

Zhang

Wang²,

Xu³

et al. 2022

Front. Microbiol.

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In comparison with ectomycorrhizal (EM) tree species, arbuscular mycorrhizal (AM) trees have different litter quality and nitrogen cycle modes, which may affect mycorrhizal colonization and the community composition and diversity. However, available studies addressing the mycorrhizal fungal colonization rate, diversity and community composition in mixed forest stands composed of AM and EM trees are rare. In the present study, we assessed litter quality, soil physicochemical properties and correlated them with mycorrhizal community characteristics in rhizosphere soils of monoculture and mixture plantation stands of AM tree species (Fraxinus mandschurica Rupr.) and EM tree species (Larix gmelinii Rupr., Picea koraiensis Nakai) in Northeast China. We hypothesized that (1) the effect of mixture pattern on mycorrhizal colonization rate and diversity would change with tree species, (2) the effect of mixture pattern on mycorrhizal community composition would be less pronounced in comparison with that of tree species. We found that mixture did not change AMF colonization rate regardless of mixture identity, whereas mixture and tree species exerted significant effects on EMF colonization rate. For AMF community, both M-AS (Fraxinus mandschurica Rupr. and Picea koraiensis Nakai) and M-AL (Fraxinus mandschurica Rupr. and Larix gmelinii Rupr.) mixtures significantly increased Pielou index and Simpson index, whereas only M-AS significantly increased Sobs. For EMF community, mixture significantly affected examined diversity indices except for Chao1. Mixture significantly shifted AMF and EMF community, and the magnitude was tree species dependent. The dominant genera in AMF and EMF communities in plantation stands were Glomus and Tomentella, respectively. The EnvFit analysis showed that the determinant factors of EMF community are soil moisture, pH, nitrate nitrogen content, dissolved organic nitrogen content, soil organic matter content, soil organic carbon/total nitrogen and litter carbon/total nitrogen. In conclusion, mixed conifer-broadleaf trees significantly changed soil physicochemical properties, litter quality as well as mycorrhizal fungi community diversity and composition.

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Diversity of arbuscular mycorrhiza fungi in rhizosphere soil and roots in Vetiveria zizanioides plantation chronosequence in coal gangue heaps

Cited by 5 publications

References 68 publications

Paired Root-Soil Samples and Metabarcoding Reveal Taxon-Based Colonization Strategies in Arbuscular Mycorrhizal Fungi Communities in Japanese Cedar and Cypress Stands

Paired Root-Soil Samples and Metabarcoding Reveal Taxon-Based Colonization Strategies in Arbuscular Mycorrhizal Fungi Communities in Japanese Cedar and Cypress Stands

Year-round dynamics of arbuscular mycorrhizal fungi communities in the roots and surrounding soils of Cryptomeria japonica

Mixed conifer-broadleaf trees on arbuscular mycorrhizal and ectomycorrhizal communities in rhizosphere soil of different plantation stands in the temperate zone, Northeast China

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