Inter and intra-specific variability in arbuscular mycorrhizal fungi affects hosts and soil health

Schoen, Chaiane; Montibeler, Morgana; Costa, Murilo Dalla; Antunes, Pedro M.; Stürmer, Sidney Luiz

doi:10.1007/s13199-021-00812-1

Cited by 6 publications

(6 citation statements)

References 95 publications

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“…As an alternative to exploration types, soil exploration can be represented by hyphal morphology (e.g., hyphal length and diameter), hyphal foraging precision and density, and the dispersal of rejuvenation organs (spore density). Several studies showed that these traits relate positively to nutrient uptake and plant productivity (e.g., Sastry et al ., 2000; Chen et al ., 2016; Schoen et al ., 2021). These promising results strengthen the potential importance of exploration type abundances for host tree functions.…”

Section: Discussionmentioning

confidence: 99%

A synthesis on the role of mycorrhizal fungal traits for understanding forest tree functions

Khokon

Meier

2023

Preprint

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Nearly all tree species associate with mycorrhizal fungi, which promote their hosts in soil resource acquisition and influence the nutrient economy of the ecosystem. Yet despite the fundamentality of this symbiotic interaction, our understanding how fungal traits relate to host traits is still in its infancy. We compiled a unique mycorrhizal fungal trait database, which sets fungal traits in relation to host functions of forest trees in the categories resource acquisition, plant productivity, and carbon (C) release. Based on meta-analysis, we demonstrate current strengths and gaps of knowledge with respect to tree species and spatial coverage, and fungal trait-tree function relationships. Most studies demonstrate a positive influence of the fungal community assembly, host-symbiont interactions, and soil exploration on resource acquisition and plant production. By contrast, the fungal community assembly related negatively to root C exudation (with low certainty). The influence of mycorrhizal colonization or soil exploration on host C release remains unclear. We conclude that the fungal effect trait category 'soil exploration' and the tree response trait category 'C release' remain major avenues for future research, which should advance from lab-measurements of soft traits and increasingly focus on mycorrhizal traits with the widest importance in ecosystem functioning.

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Section: Discussionmentioning

confidence: 99%

A synthesis on the role of mycorrhizal fungal traits for understanding forest tree functions

Khokon

Meier

2023

Preprint

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“…The magnitude and direction of these effects are also highly variable within fungal orders (Marro et al, 2022), families (Arcidiacono et al, 2023;Horsch et al, 2023;Hart and Reader, 2002), genera (Dodd et al, 2000), species (interspecies variability) as well as isolates within species (intraspecies variability) (Avio et al, 2006;Koch et al, 2006Koch et al, , 2017Munkvold et al, 2004;Marro et al, 2022). A great intraspecific variability has been demonstrated by differential responses of the same host (Munkvold et al, 2004;de Novais et al, 2014;Mensah et al, 2015) or different hosts (Koch et al, 2017;Schoen et al, 2021). This was also supported by the occurrence of a high genetic variability among isolates of the same AM fungal species (Corradi and Sanders, 2006;Mathieu et al, 2018).…”

Section: Introductionmentioning

confidence: 89%

“…extent, structure, and interconnectedness of ERM). Later, a higher functional variability was detected within species than between species (de Novais et al, 2014;Schoen et al, 2021). However, Schoen et al (2021) analyzed a large collection of tropical AM fungal isolates belonging to several families (i. e. Acaulosporaceae, Entrophosphoraceae, Gigasporaceae, and Glomeraceae), while previous works studied only a small number of isolates and few AM fungal species (Avio et al, 2006;Koch et al, 2006).…”

Section: Arbuscular Mycorrhizal Fungal Functional Variabilitymentioning

confidence: 99%

“…Later, a higher functional variability was detected within species than between species (de Novais et al, 2014;Schoen et al, 2021). However, Schoen et al (2021) analyzed a large collection of tropical AM fungal isolates belonging to several families (i. e. Acaulosporaceae, Entrophosphoraceae, Gigasporaceae, and Glomeraceae), while previous works studied only a small number of isolates and few AM fungal species (Avio et al, 2006;Koch et al, 2006). In contrast, some authors did not report significant differences in anastomosis formation, ERM traits, and P plant uptake between isolates of R. irregularis and F. mosseae (De La Providencia et al, 2005;Jansa et al, 2005).…”

Section: Arbuscular Mycorrhizal Fungal Functional Variabilitymentioning

confidence: 99%

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Arbuscular Mycorrhizal Fungi Originated from Soils with a Fertility Gradient Highlight a Strong Intraspecies Functional Variability

Marrassini,

Ercoli,

Kuramae

et al. 2023

Preprint

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“…On the other hand, the difficulties of molecular genetic identification of AMF by rDNA regions are linked to the fact that the concepts of "organism" or "species" are not fully applicable to AMF [40] because AMF contain nuclei of different origins in their hyphae and spores (heterokaryosis), i.e., essentially one fungus contains a set of polymorphic genotypes, and since the diversity of rDNA evaluates the analysis of genetic diversity, it more correct a definition that one AM fungus have a set of different ribotypes. Considering the community of nuclei within the arbuscular mycorrhiza in the studied STP, it is appropriate as a peculiar pan-genome, rapidly changing due to horizontal gene transfer [89][90][91]. It is also known that AMF can form anastomoses [92] and, accordingly, the exchange of genetic material.…”

Section: Applicability Of Molecular Genetic Identification Of Amf In ...mentioning

confidence: 99%

Diversity of Arbuscular Mycorrhizal Fungi in Distinct Ecosystems of the North Caucasus, a Temperate Biodiversity Hotspot

Yurkov,

Kryukov,

Gorbunova

et al. 2023

JoF

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Background: Investigations that are focused on arbuscular mycorrhizal fungus (AMF) biodiversity is still limited. The analysis of the AMF taxa in the North Caucasus, a temperate biodiversity hotspot, used to be limited to the genus level. This study aimed to define the AMF biodiversity at the species level in the North Caucasus biotopes. Methods: The molecular genetic identification of fungi was carried out with ITS1 and ITS2 regions as barcodes via sequencing using Illumina MiSeq, the analysis of phylogenetic trees for individual genera, and searches for operational taxonomic units (OTUs) with identification at the species level. Sequences from MaarjAM and NCBI GenBank were used as references. Results: We analyzed >10 million reads in soil samples for three biotopes to estimate fungal biodiversity. Briefly, 50 AMF species belonging to 20 genera were registered. The total number of the AM fungus OTUs for the “Subalpine Meadow” biotope was 171/131, that for “Forest” was 117/60, and that for “River Valley” was 296/221 based on ITS1/ITS2 data. The total number of the AM fungus species (except for virtual taxa) for the “Subalpine Meadow” biotope was 24/19, that for “Forest” was 22/13, and that for “River Valley” was 28/24 based on ITS1/ITS2 data. Greater AMF diversity, as well as number of OTUs and species, in comparison with that of forest biotopes, characterized valley biotopes (disturbed ecosystems; grasslands). The correlation coefficient between “Percentage of annual plants” and “Glomeromycota total reads” r = 0.76 and 0.81 for ITS1 and ITS2, respectively, and the correlation coefficient between “Percentage of annual plants” and “OTUs number (for total species)” was r = 0.67 and 0.77 for ITS1 and ITS2, respectively. Conclusion: High AMF biodiversity for the river valley can be associated with a higher percentage of annual plants in these biotopes and the active development of restorative successional processes.

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Inter and intra-specific variability in arbuscular mycorrhizal fungi affects hosts and soil health

Cited by 6 publications

References 95 publications

A synthesis on the role of mycorrhizal fungal traits for understanding forest tree functions

A synthesis on the role of mycorrhizal fungal traits for understanding forest tree functions

Arbuscular Mycorrhizal Fungi Originated from Soils with a Fertility Gradient Highlight a Strong Intraspecies Functional Variability

Diversity of Arbuscular Mycorrhizal Fungi in Distinct Ecosystems of the North Caucasus, a Temperate Biodiversity Hotspot

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