<br>颗粒状细菌接种剂改变根际微生物组和土壤团聚体分级，从而影响磷组分和玉米生长,Science of the Total Environment

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颗粒状细菌接种剂改变根际微生物组和土壤团聚体分级，从而影响磷组分和玉米生长
Science of the Total Environment ( IF 8.2 ) Pub Date : 2023-12-16 , DOI: 10.1016/j.scitotenv.2023.169371
Xiaofan Xie ₁ , Yang Liu ₁ , Gaofeng Chen ₂ , Andéole Niyongabo Turatsinze ₁ , Liang Yue ₃ , Ailing Ye ₁ , Qin Zhou ₁ , Yun Wang ₄ , Meilan Zhang ₅ , Yubao Zhang ₁ , Zhongping Li ₆ , Lam-Son Phan Tran ₇ , Ruoyu Wang ₁

Affiliation

Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Gansu Shangnong Biotechnology Co. Ltd, Baiyin 730900, China.
Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China.
Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; General Station of Gansu Cultivated Land Quality Construction and Protection, Lanzhou 730020, China.
Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China.
Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA.

通过施用生物接种剂可以缓解碱性钙质土壤中磷（P）固定对作物生产的限制。然而，细菌接种剂对此过程的影响仍知之甚少。在这里，进行了一项实地研究，以研究高浓度、经济有效的缓释颗粒细菌接种剂（GBI）对玉米（L.）植物生长的影响。此外，我们还探讨了 GBI 对根际土壤团聚体理化性质、根际土壤 P 分数和团聚体内微生物群落的影响。结果表明，施用 GBI 后植物生长和磷吸收显着改善。 GBI的应用显着增强了大团聚体中的AP、基因丰度、碱性磷酸酶活性、无机磷组分和有机磷组分。此外，GBI 影响土壤团聚体分馏，导致真菌和细菌群落的组成发生重大变化。值得注意的是，参与 P-循环的关键微生物类群，例如和，在用 GBI 处理的植物根际土壤中表现出富集。总体而言，我们的研究提供了关于 GBI 应用对碱性钙质土壤团聚体中微生物分布和 P 分数的影响的宝贵见解，这对于促进根系健康发育和最佳作物生长潜力至关重要。后续研究工作应深入探索不同GBIs和特定团聚体类型对不同土壤剖面的P分数和群落组成的影响。

"点击查看英文标题和摘要"

Granular bacterial inoculant alters the rhizosphere microbiome and soil aggregate fractionation to affect phosphorus fractions and maize growth

The constraint of phosphorus (P) fixation on crop production in alkaline calcareous soils can be alleviated by applying bioinoculants. However, the impact of bacterial inoculants on this process remains inadequately understood. Here, a field study was conducted to investigate the effect of a high-concentration, cost-effective, and slow-release granular bacterial inoculant (GBI) on maize ( L.) plant growth. Additionally, we explored the effects of GBI on rhizosphere soil aggregate physicochemical properties, rhizosphere soil P fraction, and microbial communities within aggregates. The outcomes showed a considerable improvement in plant growth and P uptake upon application of the GBI. The application of GBI significantly enhanced the AP, gene abundance, alkaline phosphatase activity, inorganic P fractions, and organic P fractions in large macroaggregates. Furthermore, GBI impacted soil aggregate fractionation, leading to substantial alterations in the composition of fungal and bacterial communities. Notably, key microbial taxa involved in P-cycling, such as and , exhibited enrichment in the rhizosphere soil of plants treated with GBI. Overall, our study provides valuable insight into the impact of GBI application on microbial distributions and P fractions within aggregates of alkaline calcareous soils, crucial for fostering healthy root development and optimal crop growth potential. Subsequent research endeavors should delve into exploring the effects of diverse GBIs and specific aggregate types on P fraction and community composition across various soil profiles.

更新日期：2023-12-16

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