Soil phosphorus partitioning and bacterial communities vary with prolonged Camellia oleifera cultivation
- 1Key Laboratory of Soil and Water Conservation and Desertification Combating in Hunan Province, College of Forestry, Central South University of Forestry and Technology , ,
- 2National Engineering Laboratory of Applied Technology for Forestry & Ecology in Southern China, Central South University of Forestry and Technology , ,
Abstract
Introduction: Camellia oleifera (C. oleifera) is a valuable plant whose seeds produce tea seed oil, with potential applications in food, cosmetics, and agriculture. In the allitic soils of southern China, the complexity of soil phosphorus (P) fractions and influencing factors significantly restricts plant growth, especially for C. oleifera.
Methods: This study examined soil samples from C. oleifera. plantations with cultivation periods of 2, 10, and 40 years, focusing on variations in P bioavailability among different soil aggregate sizes and the underlying regulatory mechanisms.
Results: Soil P availability and its fractions changed significantly with cultivation period and aggregate size. Generally, as the cultivation period extended, soil available P (AP) declined by approximately 78.3%, while the root P accumulation factor increased by 657.91%, 687.01%, and 283.16% in large macroaggregates (LM), small macroaggregates (SM), and microaggregates (Mi), respectively. Maximum P adsorption capacity was highest in SM in the 2-year plantation but shifted to the Mi fraction in the 10- and 40-year plantations. Iron-bound phosphorus (Fe-P) was the predominant inorganic P fraction and showed a consistent distribution pattern across aggregate sizes. With increasing cultivation time, calcium-bound phosphorus (Ca-P) and occluded phosphorus (O-P) decreased, whereas aluminum-bound phosphorus (Al-P) increased in larger aggregates. AP and P fractions were negatively associated with bulk soil organic matter (SOM) content, while individual P fractions showed contrasting relationships with non-hydrophilic and hydrophilic SOM functional groups. Additionally, O-P, Al-P and Fe-P were positively correlated with bacterial ɑ-diversity in LM but negatively correlated in SM and Mi. Specific bacterial taxa were associated with different P forms.
Discussion: Overall, the results show that aggregate specific P partitioning, SOM composition, P adsorption characteristics and bacterial community patterns are closely associated with soil P availability during prolonged C. oleifera. cultivation.
Related
- Environment-dependent responses of soil physicochemical properties, microbial communities and functional gene profiles to protected and open-field cultivation of Stropharia rugosoannulata
- Identification of bacterial communities, structure, and dynamics during cattle and poultry manure composting
- Responses of soil characteristics and bacterial communities to agricultural irrigation with different treatment levels of wastewater
- Divergent successional responses and environmental drivers of soil bacterial and fungal communities in subalpine forests of the Eastern Qilian Mountains
- Rotation system reshapes soil profile environmental gradients to reorganize bacterial communities and decouple potential nitrogen cycling functions
BibTeX
@article{lu2026soil,
title = {{Soil phosphorus partitioning and bacterial communities vary with prolonged Camellia oleifera cultivation}},
author = {Yukun Lu and Zipei Luo and Jing Yang and Lichao Wu and Sheng Lu},
journal = {Frontiers in microbiology},
year = {2026},
month = sep,
doi = {10.3389/fmicb.2026.1944090},
url = {https://europepmc.org/article/PMC/PMC13661960},
note = {CC BY},
}
RIS
TY - JOUR
TI - Soil phosphorus partitioning and bacterial communities vary with prolonged Camellia oleifera cultivation
AU - Yukun Lu
AU - Zipei Luo
AU - Jing Yang
AU - Lichao Wu
AU - Sheng Lu
PY - 2026
DA - 2026/09/30
JO - Frontiers in microbiology
DO - 10.3389/fmicb.2026.1944090
UR - https://europepmc.org/article/PMC/PMC13661960
AB - Introduction: Camellia oleifera (C. oleifera) is a valuable plant whose seeds produce tea seed oil, with potential applications in food, cosmetics, and agriculture. In the allitic soils of southern China, the complexity of soil phosphorus (P) fractions and influencing factors significantly restricts plant growth, especially for C. oleifera. Methods: This study examined soil samples from C. oleifera. plantations with cultivation periods of 2, 10, and 40 years, focusing on variations in P bioavailability among different soil aggregate sizes and the underlying regulatory mechanisms. Results: Soil P availability and its fractions changed significantly with cultivation period and aggregate size. Generally, as the cultivation period extended, soil available P (AP) declined by approximately 78.3%, while the root P accumulation factor increased by 657.91%, 687.01%, and 283.16% in large macroaggregates (LM), small macroaggregates (SM), and microaggregates (Mi), respectively. Maximum P adsorption capacity was highest in SM in the 2-year plantation but shifted to the Mi fraction in the 10- and 40-year plantations. Iron-bound phosphorus (Fe-P) was the predominant inorganic P fraction and showed a consistent distribution pattern across aggregate sizes. With increasing cultivation time, calcium-bound phosphorus (Ca-P) and occluded phosphorus (O-P) decreased, whereas aluminum-bound phosphorus (Al-P) increased in larger aggregates. AP and P fractions were negatively associated with bulk soil organic matter (SOM) content, while individual P fractions showed contrasting relationships with non-hydrophilic and hydrophilic SOM functional groups. Additionally, O-P, Al-P and Fe-P were positively correlated with bacterial ɑ-diversity in LM but negatively correlated in SM and Mi. Specific bacterial taxa were associated with different P forms. Discussion: Overall, the results show that aggregate specific P partitioning, SOM composition, P adsorption characteristics and bacterial community patterns are closely associated with soil P availability during prolonged C. oleifera. cultivation.
SN - 1664-302X
ER -