Long‐term Camellia oleifera cultivation influences the assembly process of soil bacteria in different soil aggregate particles

Abstract

Understanding the mechanisms that govern microbial community assembly across a soil-plant continuum is crucial for predicting the responses of ecosystems to environmental changes. However, the impact of the health status of plants on microbial assemblies across these continuums remains poorly understood. In this study, we investigated the stochastic and deterministic processes associated with different aggregate particles and Camellia oleifera growth stages (sapling, maturity, and degeneration periods). The composition of bacterial communities in C. oleifera soil was significantly affected by cultivation length and aggregate size, and cultivation length plays a more important role in the regulation of bacterial composition. The assembly processes of the bacterial community were dominated by deterministic processes in soil aggregates at different growth stages. Soil structurality determined soil α-diversity and β-diversity to a greater extent than soil nutrient content. This study provides a comprehensive understanding of the evolutionary mechanisms of soil bacterial community in different soil aggregates and C. oleifera plantation lengths and highlights the significance of soil physical properties to mediate soil microbial community composition and abundance.

Response of bacterial community structure and diversity to different fertilization regimes in the rhizosphere soil of Camellia oleifera

“…Continuous application of organic and inorganic fertilizers could promote the bacterial diversity in the C. oleifera rhizosphere. Different treatments promote the richness of eutrophic bacteria and inhibit the richness of hypotrophic bacteria (Lijun et al, 2022). In this research, PCoA revealed that bacterial community composition had significant differences among the six fertilization treatments.…”

Riparian Vegetation Conversion to an Oil Tea Plantation: Impacts on Small Mammals at the Community, Population, and Individual Level

“…A meta-analysis of 125 works of literature found that a tea (Camellia sinensis) monoculture plantation can cause a decline in biodiversity, while traditional rustic tea agroecosystems have the potential to support a greater amount of wildlife [20]. Previous studies have demonstrated that an oil tea plantation influences the community assembly of soil microorganisms [21,22], while its impact on local fauna remains poorly understood. In particular, seed-caching rodents have been identified as crucial contributors to the seed fate of oil tea plants, playing a key role in shaping their regeneration process [17,23].…”