数字农科院2.0

Phosphorus Functional Genes Control Rice Yield via Microbial Biomass Phosphorus and Plant Phosphorus Uptake in a Rice-Oilseed Rape Rotation System Compared with a Rice-Wheat Rotation System

文献类型： 外文期刊

作者： Zhang, Qingyue;Yu, Weijia;Li, Min;Cheng, Wenlong;Huai, Shengchang;Jin, Yuwen;Li, Guihua;Wu, Ji;Lu, Changai

作者机构：

关键词： rice-oilseed rape rotation;rice-wheat rotation;microbial biomass phosphorus;P functional genes;soil phosphorus bioavailability;rice yield

期刊名称： AGRONOMY-BASEL

ISSN：

年卷期： 2025 年 15 卷 4 期

页码：

收录情况： SCIE（2025版）

摘要： Crop rotation and microbial driving force significantly influence soil phosphorus (P) bioavailability and crop yield. However, differences in underlying microbial mechanisms in rotations remain unclear. We examined rice yield, P uptake, soil and microbial P contents, enzyme activity, and P functional genes over six years (2016-2022) to elucidate microbial mechanisms driving rice yield in rice-wheat (RW) and rice-oilseed rape (RO) rotations. RO significantly increased rice yield and plant P uptake by 9.17% and 20.70%, respectively, compared to RW. Soil total (TP) and available (AP) P contents were significantly lower (4.83% and 18.31%, respectively) under RO than RW, whereas microbial biomass phosphorus (MBP) and acid phosphatase activity (EP) were greater (39.40% and 128.45%, respectively). PICRUSt2 results revealed that RO increased phoA phoB (alkaline phosphatase), phnX (phosphonoacetaldehyde hydrolase [EC:3.11.1.1]), gcd (Quinoprotein glucose dehydrogenase [EC:1.1.5.2]), and ppaC (manganese-dependent inorganic pyrophosphatase) and decreased phnD (phosphonate transport system substrate-binding protein), ugpE (sn-glycerol 3-phosphate transport system permease protein), ugpA (sn-glycerol 3-phosphate transport system permease protein), and phnO ((aminoalkyl)phosphonate N-acetyltransferase [EC:2.3.1.280]) abundance. Random forest analysis showed that ppaC, phnD, gcd, and phnX were important for rice yield and plant P uptake. Partial least squares analysis revealed that RO indirectly increased rice yield by influencing MBP and affecting plant P uptake through P functional genes. Overall, RO improves rice yield and P bioavailability by altering P functional genes (ppaC, phnD, gcd, and phnX), providing new perspectives on crop-microorganism interactions and resource use efficiency.

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