Suppressed N fixation and diazotrophs after four decades of fertilization

Microbiome, Год журнала: 2019, Номер 7(1)

Опубликована: Окт. 31, 2019

N fixation is one of the most important microbially driven ecosystem processes on Earth, allowing to enter soil from atmosphere, and regulating plant productivity. A question that remains be answered whether such a fundamental process would still in an over-fertilized world, as long-term effects fertilization associated diazotrophic communities remain tested. Here, we used 35-year experiment, investigated changes rates community response inorganic organic fertilization.It was found drastically reduced (dropped by 50%) after almost four decades fertilization. Our results further indicated functionality losses were with reductions relative abundance keystone phylogenetically clustered fixers Geobacter spp.Our work suggests might have selected against specific groups fixers. study provides solid evidence certain taxa will largely suppressed more fertilized implications for biodiversity functions.

Язык: Английский

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Spartina alterniflora invasion alters soil bacterial communities and enhances soil N2O emissions by stimulating soil denitrification in mangrove wetland

The Science of The Total Environment, Год журнала: 2018, Номер 653, С. 231 - 240

Опубликована: Окт. 21, 2018

Язык: Английский

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Organic amendments enhance soil microbial diversity, microbial functionality and crop yields: A meta-analysis

The Science of The Total Environment, Год журнала: 2022, Номер 829, С. 154627 - 154627

Опубликована: Март 17, 2022

Язык: Английский

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Biological nitrogen fixation and prospects for ecological intensification in cereal-based cropping systems

Field Crops Research, Год журнала: 2022, Номер 283, С. 108541 - 108541

Опубликована: Апрель 17, 2022

The demand for nitrogen (N) crop production increased rapidly from the middle of twentieth century and is predicted to at least double by 2050 satisfy on-going improvements in productivity major food crops such as wheat, rice maize that underpin staple diet most world's population. will need be fulfilled two main sources N supply – biological (gas) (N2) fixation (BNF) fertilizer supplied through Haber-Bosch processes. BNF provides many functional benefits agroecosystems. It a vital mechanism replenishing reservoirs soil organic improving availability support growth while also assisting efforts lower negative environmental externalities than N. In cereal-based cropping systems, legumes symbiosis with rhizobia contribute largest input; however, diazotrophs involved non-symbiotic associations plants or present free-living N2-fixers are ubiquitous provide an additional source fixed This review presents current knowledge free-living, symbiotic global cycle, examines regional estimates contributions BNF, discusses possible strategies enhance prospective benefit cereal nutrition. We conclude considering challenges introducing planta into cereals reflect on potential both conventional alternative management systems encourage ecological intensification legume production.

Язык: Английский

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Microplastics reduce soil microbial network complexity and ecological deterministic selection

Environmental Microbiology, Год журнала: 2022, Номер 24(4), С. 2157 - 2169

Опубликована: Март 1, 2022

Summary Microplastics have been proposed as emerging threats for terrestrial systems they may potentially alter the physicochemical/biophysical soil environments. Due to variety of properties microplastics and soils, microplastic‐induced effects in ecosystems are greatly manifold. Here, we studied three polymer (polyamide‐6, polyethylene, polyethylene terephthalate) on with four different types. The success patterns, interaction relationships, assembly processes bacterial communities were also studied. potential promote CO 2 emissions enhance humification. Even though did not significantly diversity composition microbial community, application decreased network complexity stability, including size, connectivity, number module keystone species. community was governed by deterministic selection (77.3%–90.9%) all treatments, while increased contribution stochastic from 9.1% control 13.6%–22.7%. neutral model results indicated most taxa present predicted region (approximately 98%), suggesting importance processes. These findings provided a fundamental insight understanding ecosystems.

Язык: Английский

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Unboxing the black box—one step forward to understand the soil microbiome: A systematic review

Microbial Ecology, Год журнала: 2022, Номер 85(2), С. 669 - 683

Опубликована: Фев. 2, 2022

Abstract Soil is one of the most important assets planet Earth, responsible for maintaining biodiversity and managing ecosystem services both managed natural ecosystems. It encompasses large proportion microscopic biodiversity, including prokaryotes eukaryotes. microbiome critical in soil functions, but their activities have diminutive recognition few systems like desert land forest highly dependent on abiotic biotic factors pH, carbon content, structure, texture, vegetation, it can notably vary with ecosystems respective inhabitants. Thus, unboxing this black box essential to comprehend basic components adding supported services. Recent advancements field molecular microbial ecology delivered commanding tools examine genetic trove biodiversity. Objective review provide a evaluation work microbiome, especially since advent NGS techniques. The also focuses advances our understanding communities, interactions, functional capabilities along role maneuvering biogeochemical cycle while underlining tapping unprecedented metagenomics data infer ecological attributes yet undiscovered microbiome. This key research directions that could shape future applied into has led us understand difficult generalize plays substantiated shaping networks indeed vital resource sustaining functioning. Exploring will help unlocking roles various network. be resourceful exploring forecasting its impacts dealing alleviating problems rapid climate change.

Язык: Английский

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Effects of organic fertilizers on plant growth and the rhizosphere microbiome

Applied and Environmental Microbiology, Год журнала: 2024, Номер 90(2)

Опубликована: Янв. 9, 2024

Application of organic fertilizers is an important strategy for sustainable agriculture. The biological source determines their specific functional characteristics, but few studies have systematically examined these functions or assessed health risk to soil ecology. To fill this gap, we analyzed 16S rRNA gene amplicon sequencing data from 637 samples amended with plant- and animal-derived (hereafter plant animal fertilizers). Results showed that increased the diversity microbiome, while maintained stability microbial community. Microcosm experiments verified were beneficial root development carbon cycle pathways, enriched nitrogen pathways. Compared fertilizers, harbored a lower abundance factors such as antibiotic resistance genes viruses. Consequently, might be more suitable long-term application in This work provides guide fertilizer selection perspective microecology promotes agriculture.IMPORTANCEThis study valuable guidance use agricultural production microbiome ecological risk.

Язык: Английский

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Soil microbial subcommunity assembly mechanisms are highly variable and intimately linked to their ecological and functional traits

Molecular Ecology, Год журнала: 2024, Номер 33(7)

Опубликована: Фев. 29, 2024

Abstract Revealing the mechanisms underlying soil microbial community assembly is a fundamental objective in molecular ecology. However, despite increasing body of research on overall mechanisms, our understanding subcommunity for different prokaryotic and fungal taxa remains limited. Here, soils were collected from more than 100 sites across southwestern China. Based amplicon high‐throughput sequencing iCAMP analysis, we determined various taxa. The results showed that dispersal limitation homogenous selection primary drivers this region. highly variable. For instance, contribution to Crenarchaeota was 70%, but it only around 10% Actinomycetes, Gemmatimonadetes Planctomycetes. subcommunities including with higher occurrence frequencies, average relative abundance network degrees, as well wider niches tended be influenced by homogenizing drift, less affected heterogeneous limitation. also varied substantially among functional guilds. Notably, diazotrophs, nitrifiers, saprotrophs some pathogens predominantly controlled selection, while denitrifiers mainly stochastic processes such drift. These findings provide novel insights into diversity maintenance analysis pipeline holds significant value future research.

Язык: Английский

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Response of symbiotic and asymbiotic nitrogen-fixing microorganisms to nitrogen fertilizer application

Journal of Soils and Sediments, Год журнала: 2018, Номер 19(4), С. 1948 - 1958

Опубликована: Ноя. 21, 2018

Язык: Английский

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Diversity and co-occurrence network modularization of bacterial communities determine soil fertility and crop yields in arid fertigation agroecosystems

Biology and Fertility of Soils, Год журнала: 2021, Номер 57(6), С. 809 - 824

Опубликована: Июнь 17, 2021

Язык: Английский

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