Potential Effects of Microplastic on Arbuscular Mycorrhizal Fungi

Frontiers in Plant Science, Journal Year: 2021, Volume and Issue: 12

Published: Feb. 1, 2021

Microplastics (MPs) are ubiquitously found in terrestrial ecosystems and increasingly recognized as a factor of global change (GCF). Current research shows that MP can alter plant growth, soil inherent properties, the composition activity microbial communities. However, knowledge about how microplastic affects arbuscular mycorrhizal fungi (AMF) is scarce. For plants it has been shown both increase decrease aboveground biomass reduce root diameter, which could indirectly cause AMF abundance activity. One main direct effects reduction bulk density, translates to an altered pore structure water transport. Moreover, especially fibers have considerable impacts on structure, namely size distribution stability aggregates. Therefore, alters number parameters determine habitat space conditions for AMF. We expect this will influence functions mediated by AMF, such aggregation, nutrient discuss deal with other GCFs context sustainable food production. The co-occurrence several GCFs, e.g., elevated temperature, drought, pesticides, modify impact Furthermore, ubiquitous presence also relates earth system processes, net primary production (NPP), carbon nitrogen cycling, involve key organisms. future research, we outline experiments should be prioritized.

Language: Английский

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HT-SIP: a semi-automated stable isotope probing pipeline identifies cross-kingdom interactions in the hyphosphere of arbuscular mycorrhizal fungi

Microbiome, Journal Year: 2022, Volume and Issue: 10(1)

Published: Nov. 25, 2022

Linking the identity of wild microbes with their ecophysiological traits and environmental functions is a key ambition for microbial ecologists. Of many techniques that strive this goal, Stable-isotope probing-SIP-remains among most comprehensive studying whole communities in situ. In DNA-SIP, actively growing microorganisms take up an isotopically heavy substrate build heavier DNA, which can be partitioned by density into multiple fractions sequenced. However, SIP relatively low throughput requires significant hands-on labor. We designed tested semi-automated, high-throughput (HT-SIP) pipeline to support well-replicated, temporally resolved amplicon metagenomics experiments. applied soil microhabitat ecological importance-the hyphosphere zone surrounding arbuscular mycorrhizal fungal (AMF) hyphae. AMF form symbiotic relationships plant species play roles terrestrial nutrient carbon cycling.

Language: Английский

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Potential Roles of Soil Microorganisms in Regulating the Effect of Soil Nutrient Heterogeneity on Plant Performance

Microorganisms, Journal Year: 2022, Volume and Issue: 10(12), P. 2399 - 2399

Published: Dec. 3, 2022

The spatially heterogeneous distribution of soil nutrients is ubiquitous in terrestrial ecosystems and has been shown to promote the performance plant communities, influence species coexistence, alter ecosystem nutrient dynamics. Plants interact with diverse microbial communities that lead an interdependent relationship (e.g., symbioses), driving community productivity, belowground biodiversity, functioning. However, potential role regulating effect heterogeneity on growth little studied. Here, we highlight ecological importance microorganisms discuss acquisition mechanisms soil. We also examine evolutionary advantages via a environment. Lastly, three-way interaction among plants, heterogeneity, propose areas for future research priorities. By clarifying shaping performance, present study enhances current understanding dynamics context patchily distributed nutrients.

Language: Английский

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Plant-associated fungi support bacterial resilience following water limitation

The ISME Journal, Journal Year: 2022, Volume and Issue: 16(12), P. 2752 - 2762

Published: Sept. 9, 2022

Abstract Drought disrupts soil microbial activity and many biogeochemical processes. Although plant-associated fungi can support plant performance nutrient cycling during drought, their effects on nearby drought-exposed communities are not well resolved. We used H218O quantitative stable isotope probing (qSIP) 16S rRNA gene profiling to investigate bacterial community dynamics following water limitation in the hyphospheres of two distinct fungal lineages (Rhizophagus irregularis Serendipita bescii) grown with bioenergy model grass Panicum hallii. In uninoculated soil, a history resulted significantly lower growth potential efficiency, as diversity actively growing community. contrast, both had protective effect hyphosphere exposed limitation: potential, were suppressed by soils inoculated either fungus. Despite similar at level, did elicit different taxon-specific responses, was greater R. compared S. bescii-inoculated soils. Several taxa that responded positively inocula belong considered drought susceptible. Overall, qSIP highlighted treatment structure less pronounced using traditional profiling. Together, these results indicate fungal–bacterial synergies may resilience moisture limitation.

Language: Английский

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Arbuscular mycorrhizal fungi and Streptomyces: brothers in arms to shape the structure and function of the hyphosphere microbiome in the early stage of interaction

Microbiome, Journal Year: 2024, Volume and Issue: 12(1)

Published: May 9, 2024

Abstract Background Fungi and bacteria coexist in a wide variety of environments, their interactions are now recognized as the norm most agroecosystems. These microbial communities harbor keystone taxa, which facilitate connectivity between fungal bacterial communities, influencing composition functions. The roots plants associated with arbuscular mycorrhizal (AM) fungi, develop dense networks hyphae soil. surface these (called hyphosphere) is region where multiple can occur, e.g., exchanging or responding to each other’s metabolites. However, presence importance taxa AM hyphosphere remain largely unknown. Results Here, we used vitro pot cultivation systems fungi investigate whether certain were able shape growing potentially improved fitness host. Based on various soil leachates, synthetic found that under organic phosphorus (P) conditions, could selectively recruit enhanced P nutrition competed less P-mobilizing bacteria. Specifically, observed privileged interaction isolate Streptomyces sp. D1 genus Rhizophagus , (1) carbon compounds exuded by fungus acquired bacterium mineralize (2) culturable community residing was part regulated D1, primarily inhibiting weak P-mineralizing ability, thereby enhancing acquire P. Conclusions This work highlights multi-functionality fungal-bacteria bacterial-bacterial at hyphal fungi.

Language: Английский

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