Microbial metabolism influences microplastic perturbation of dissolved organic matter in agricultural soils

The ISME Journal, Год журнала: 2024, Номер 18(1)

Опубликована: Янв. 1, 2024

Abstract An estimated 258 million tons of plastic enter the soil annually. Joining persistent types microplastic (MP), there will be an increasing demand for biodegradable plastics. There are still many unknowns about pollution by either type, and one large gap is fate composition dissolved organic matter (DOM) released from MPs as well how they interact with microbiomes in agricultural systems. In this study, polyethylene MPs, photoaged to different degrees, virgin polylactic acid were added at levels incubated 100 days address knowledge gap. We find that, upon MP addition, labile components low aromaticity degraded transformed, resulting increased oxidation degree, reduced molecular diversity, changed nitrogen sulfur contents DOM. Terephthalate, acetate, oxalate, L-lactate DOM 4-nitrophenol, propanoate, nitrate major molecules available microbiomes. The bacteria involved metabolism mainly concentrated Proteobacteria, Actinobacteriota, Bacteroidota, fungi Ascomycota Basidiomycota. Our study provides in-depth understanding microbial transformation its effects evolution soils.

Язык: Английский

---

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

---

Assembly processes of abundant and rare microbial communities in orchard soil under a cover crop at different periods

Geoderma, Год журнала: 2021, Номер 406, С. 115543 - 115543

Опубликована: Окт. 21, 2021

Язык: Английский

---

Broader environmental adaptation of rare rather than abundant bacteria in reforestation succession soil

The Science of The Total Environment, Год журнала: 2022, Номер 828, С. 154364 - 154364

Опубликована: Март 12, 2022

Язык: Английский

---

Soil aggregate modulates microbial ecological adaptations and community assemblies in agricultural soils

Soil Biology and Biochemistry, Год журнала: 2022, Номер 172, С. 108769 - 108769

Опубликована: Июнь 30, 2022

Язык: Английский

---

Rare microbial communities drive ecosystem multifunctionality in acidic soils of southern China

Applied Soil Ecology, Год журнала: 2023, Номер 189, С. 104895 - 104895

Опубликована: Апрель 7, 2023

Язык: Английский

---

Qu-omics elucidates the formation and spatio-temporal differentiation mechanism underlying the microecology of high temperature Daqu

Food Chemistry, Год журнала: 2023, Номер 438, С. 137988 - 137988

Опубликована: Ноя. 14, 2023

Язык: Английский

---

Dynamic microbial community composition, co-occurrence pattern and assembly in rhizosphere and bulk soils along a coniferous plantation chronosequence

CATENA, Год журнала: 2023, Номер 223, С. 106914 - 106914

Опубликована: Янв. 6, 2023

Язык: Английский

---

Bioaugmented Daqu-induced variation in community succession rate strengthens the interaction and metabolic function of microbiota during strong-flavor Baijiu fermentation

LWT, Год журнала: 2023, Номер 182, С. 114806 - 114806

Опубликована: Апрель 27, 2023

Bioaugmented Daqu based on functional strains/microbiota inoculating improved the quality and yield of Baijiu, but underlying mechanism remains unclear due to lack ecological insights into complex dynamic process. Hence, three kinds were compared for fermentation, physicochemical parameters, community succession flavor profile in fermented grains (Zaopei). Compared with traditional Daqu, both two bioaugmented namely space fortified sustained higher biodiversity by delaying bacterial accelerating that fungal one, Lactobacillus Pichia biomarkers rate. Ecological analysis indicated communities was more sensitive environmental which lactic acid closely related its assembly pattern niche breadth. In addition, contributed achieving “ethyl hexanoate-increasing” lactate-decreasing”, could be attributed enhanced interspecies interactions relieving survival pressure producers, such as Kroppenstedtia, Saccharopolyspora, Kazachstania. These results elucidate regulating metabolism highlight vital role rate, will guide directional regulation Baijiu fermentation future.

Язык: Английский

---

Assembly processes of bacterial and fungal communities in metal(loid)s smelter soil

Journal of Hazardous Materials, Год журнала: 2023, Номер 451, С. 131153 - 131153

Опубликована: Март 6, 2023

Язык: Английский

---