Soil Microbial Dynamics in Tea Plantations

Soil microbial dynamics in tea plantations underpin the productivity, quality and sustainability of one of the world’s most economically important crops. In tea gardens, interactions between plant roots and soil microbiota regulate nutrient cycling, soil structure and disease suppression. Management practices such as fertiliser regimes, organic amendments, intercropping and biochar application profoundly influence microbial community composition, functional gene abundance and soil pH. These changes in turn affect carbon and nitrogen transformations, soil respiration and the expression of tea quality-related compounds. Understanding the drivers of microbial diversity and network interactions is essential for optimising agronomic practices, enhancing carbon sequestration and mitigating soil degradation in tea-growing regions globally.

Research from Nature Portfolio

Recent work has examined rhizospheric bacterial communities associated with ancient wild tea along elevational gradients. Illumina sequencing revealed that Proteobacteria, Acidobacteria and Actinobacteria dominate across elevations, with the highest α-diversity at lower altitudes. Phylogenetic clustering analyses indicated non-random community assembly, and co-occurrence networks were simpler at mid-elevations. Soil ammonium nitrogen emerged as the principal driver of bacterial distribution, highlighting the key role of nutrient availability in structuring rhizosphere microbiomes of tea plants under diverse environmental conditions.

Soil Microbial Dynamics in Tea Plantations publication trend

The graph below shows the total number of articles in soil microbial dynamics in tea plantations across all publications each year (not limited to Nature Index journals).

Technical terms

Rhizosphere: The narrow zone of soil directly influenced by root exudates and associated microbial communities.

Soil respiration: The release of carbon dioxide from soil due to root and microbial metabolic activity.

Co-occurrence network: A graphical model representing statistical associations among microbial taxa, indicating potential interactions.

Root exudates: Organic compounds secreted by plant roots that modulate soil chemistry and microbial behaviour.

Soil acidification: The process by which soil pH declines, often as a result of intensive fertiliser use or organic acid accumulation.

References

1. Change of rhizospheric bacterial community of the ancient wild tea along elevational gradients in Ailao mountain, China. Scientific Reports (2020).
2. Divergent effects of biochar amendment and replacing mineral fertilizer with manure on soil respiration in a subtropical tea plantation. Biochar (2023).
3. Leguminous green manure intercropping changes the soil microbial community and increases soil nutrients and key quality components of tea leaves. Horticulture Research (2024).
4. Differential responses of the rhizosphere microbiome structure and soil metabolites in tea (Camellia sinensis) upon application of cow manure. BMC Microbiology (2022).