Environmental filtering governs consistent vertical zonation in sedimentary microbial communities across disconnected mountain lakes

Environmental Microbiology, Год журнала: 2024, Номер 26(3)

Опубликована: Март 1, 2024

Abstract Subsurface microorganisms make up the majority of Earth's microbial biomass, but ecological processes governing surface communities may not explain community patterns at depth because burial. Depth constrains dispersal and energy availability, when combined with geographic isolation across landscapes, influence assembly. We sequenced 16S rRNA gene bacteria archaea from 48 sediment cores 36 lakes in four disconnected mountain ranges Wyoming, USA used null models to infer assembly depth, spatial isolation, varying environments. Although we expected strong limitations these isolated settings, composition was primarily shaped by environmental selection. Communities consistently shifted domination organisms that degrade organic matter methanogenic, low‐energy adapted taxa deeper zones. Stochastic processes—like limitation—contributed differences among lakes, effects weakened selection ultimately governed subsurface biogeography.

Язык: Английский

---

Insights on the assembly processes and drivers of soil microbial communities in different depth layers in an abandoned polymetallic mining district

Journal of Hazardous Materials, Год журнала: 2023, Номер 458, С. 132043 - 132043

Опубликована: Июль 11, 2023

Язык: Английский

---

Soil depths and microhabitats shape soil and root-associated bacterial and archaeal communities more than crop rotation in wheat

Frontiers in Microbiomes, Год журнала: 2024, Номер 3

Опубликована: Фев. 5, 2024

The plethora of microorganisms inhabiting the immediate vicinity healthy root systems plays a pivotal role in facilitating optimal nutrient and water acquisition by plants. In this study, we investigated soil microbial communities associated with wheat roots within distinct microhabitats, root-affected (RA), rhizosphere (RH), rhizoplane (RP). These microhabitats were explored at five depths, our investigation focused on cultivated monoculture (WM) crop rotation (WR). Overall, there significant differences microbiota composition between WM WR, although no difference bacterial diversity was observed. Differentially abundant taxa WR observed all three emphasizing important insights localization commonly bacteria to roots. Comparing RP exhibited most dissimilar WR. Taxa that differentially microhabitats. high relative abundance belonging phylum Proteobacteria rhizoplane, such as Devosia , Pseudomonas Shinella Sphingomonas along other genera, Pedobacter ( Bacteroidota ), Agromyces Streptomyces Actinobacteriota ) highlight recruitment potentially beneficial Interestingly, these entire length roots, even depths up 120 cm. presence specific may be for coping shortages, particularly under upcoming climate scenarios, where limiting factor plant growth. This study provides valuable designing management strategies promote diverse community cropping systems, considering depth key factors. Although, time, cannot link yield reductions monocultural fields, propose some genera enhance or compared monoculture. Advanced technologies, including functional analyses culturomics, further understanding ecological roles played microbes their potential applications sustainable agriculture.

Язык: Английский

---

The Importance of Soil Microorganisms in Regulating Soil Health

Communications in Soil Science and Plant Analysis, Год журнала: 2024, Номер 55(17), С. 2636 - 2650

Опубликована: Июнь 18, 2024

Soil is an important reservoir of innumerable natural and biological resources fundamental to the sustainability life earth's functionality. The soil complex due changing biodiversity, physicochemical characteristics, disturbances, pedogenesis, which are constituent indices required for measurement its healthiness. Hence, there a need concertedly protect by consciously promoting practices behaviors that optimize priority functions in delivering ecosystem services. It further significant crop yield, hence pay more attention health. healthiness also reflection capacity support biogeochemical processes, abiotic communities, plant animal productions. However, agronomic studies, until recently, focused on use chemical indicators determining health, despite versatile ecophysiological role microorganisms formation, resource cycling, management. These phenomena expressed microbial communities form basis conversion diverse organic matters into bioutilizable plants' healthy development. This review, therefore, explored underlining mechanisms, particularly climate change-related, caused divergent properties how this impacted composition soil. Likewise, several pieces literature physical ecological services, were compared toward innovative best management improving

Язык: Английский

---

Virus ecology and 7‐year temporal dynamics across a permafrost thaw gradient

Environmental Microbiology, Год журнала: 2024, Номер 26(8)

Опубликована: Июль 1, 2024

Abstract Soil microorganisms are pivotal in the global carbon cycle, but viruses that affect them and their impact on ecosystems less understood. In this study, we explored diversity, dynamics, ecology of soil through 379 metagenomes collected annually from 2010 to 2017. These samples spanned seasonally thawed active layer a permafrost thaw gradient, which included palsa, bog, fen habitats. We identified 5051 virus operational taxonomic units (vOTUs), doubling known for site. vOTUs were largely ephemeral within habitats, suggesting turnover at vOTU level year year. While diversity varied by stage depth‐related patterns specific each habitat, communities did not significantly change over time. The abundance ratios host phylum show consistent trends across depth, or To assess potential ecosystem impacts, predicted hosts silico found linked microbial lineages involved such as methanotrophy methanogenesis. This identification Candidatus Methanoflorens, significant methane contributor. also detected variety auxiliary metabolic genes, including 24 carbon‐degrading glycoside hydrolases, six uniquely terrestrial. conclusion, these long‐term observations enhance our understanding context climate‐relevant processes provide opportunities explore role terrestrial cycling.

Язык: Английский

---