Planting Chinese milk vetch with phosphate-solubilizing bacteria inoculation enhances phosphorus turnover by altering the structure of the phoD-harboring bacteria community
文献类型： 外文期刊
作者： Chang, Danna 1 ; Song, Yarong 2 ; Liang, Hai 3 ; Liu, Rui 4 ; Cai, Cheng 1 ; Lv, Shuailei 1 ; Liao, Yulin 5 ; Nie, Jun 5 ; Duan, Tingyu 2 ; Cao, Weidong 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arid & Semiarid A, Beijing 100081, Peoples R China
2.Lanzhou Univ, State Key Lab Herbage Improvement & Grassland Agro, Key Lab Grassland Livestock Ind Innovat, Minist Agr & Rural Affairs,Coll Pastoral Agr Sci &, Lanzhou 730020, Peoples R China
3.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Jiangsu, Peoples R China
4.Gansu Agr Univ, Coll Agron, State Key Lab Arid Land Crop Sci, Lanzhou 730070, Peoples R China
5.Hunan Acad Agr Sci, Soil & Fertilizer Inst Hunan Prov, Changsha 410125, Peoples R China
关键词： Chinese milk vetch; Phosphate solubilizing bacteria; Soil phosphorus turnover; Alkaline phosphatase-harboring bacteria
期刊名称：EUROPEAN JOURNAL OF SOIL BIOLOGY （ 影响因子：3.3； 五年影响因子：4.1 ）
ISSN： 1164-5563
年卷期： 2024 年 123 卷
页码：
收录情况： SCI
摘要： This study aimed to reveal how planting Chinese milk vetch (CMV) as green manure in combination with phosphate-solubilizing bacteria-based biofertilizer can enhance phosphorus (P) utilization in CMV-rice crop rotations. The pot experiment included two factors: the presence of Acinetobacter calcoaceticus (ACC) inoculation, and the variety of CMV (six varieties), resulting in 12 treatments. The experiment lasted for 190 d and soil and plants were analyzed thereafter. ACC inoculation increased the average shoot dry weight by 37.1 % and P uptake by 73.9 % of CMV, and increased the average content of soil labile P by 9.2 %; decreased the average content of moderately labile P by 6.9 % and stable P by 5.4 %, compared to control. ACC inoculation increased the average concentrations of acetic acid, gluconic acid, oxalic acid, citric acid, acid phosphatase and alkaline phosphatase. Structural equation model showed that organic acid and phosphatase correlated with soil labile and moderately labile P pools. The average abundance and diversity of the alkaline phosphatase gene (phoD) and the proportion of dominant species in the mineralization of organic P (Streptomycetaceae) increased under ACC inoculation. Thus, planting CMV with ACC inoculation increased the average concentrations of organic acid and alkaline phosphatase, activating insoluble inorganic P and organic P. However, their combination enhanced the average abundance and altered the structure of the phoD-harboring bacteria community, which in turn promoted organic P mineralization. Planting Chinese milk vetch with Acinetobacter calcoaceticus inoculation can effectively utilize P in paddy soil, which can enhance P availability for subsequent rice crops.
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