Combined Analysis of the Leaf Metabolome, Lipidome, and Candidate Gene Function: Insights into Genotypic Variation in Phosphorus Utilization Efficiency in Stylosanthes guianensis
文献类型： 外文期刊
作者： Lv, Jinhui 1 ; Wu, Yuanhang 4 ; Huang, Rui 3 ; Xu, Ranran 1 ; Zhang, Jianyu 1 ; Liu, Yu 1 ; Luo, Lijuan 1 ; Liu, Guodao 1 ; Liu, Pandao 1 ;
作者机构： 1.Hainan Univ, Sch Trop Agr & Forestry, Haikou 572025, Peoples R China
2.Hainan Univ, Sanya Inst Breeding & Multiplicat, Sanya 570228, Peoples R China
3.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Haikou 571101, Peoples R China
4.Hubei Univ Sci & Technol, Sch Nucl Technol & Chem Biol, Xianning 437100, Peoples R China
关键词：
phosphorus utilization efficiency; membrane lipid remodeling; purple acid phosphatase;
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.2； 五年影响因子：6.4 ）
ISSN： 0021-8561
年卷期： 2025 年 73 卷 4 期
页码：
收录情况： SCI
摘要： Stylo (Stylosanthes guianensis) exhibits excellent tolerance to low-phosphate (Pi) availability, but the underlying mechanisms responsible for improving the phosphorus (P) utilization efficiency (PUE) remain unclear. This study employed metabolomics, lipidomics, and gene expression analyses to investigate the differential responses to low-Pi stress between the high-PUE genotype CF047827 and the cultivar Reyan No. 2. Results showed that CF047827 had higher expression levels of membrane lipid remodeling-related genes in its leaves compared to Reyan No. 2 under low-Pi conditions. This was accompanied by greater phospholipid degradation and non-P-containing lipid biosynthesis in the leaves of CF047827. Furthermore, the purple acid phosphatase gene SgPAP27a, which is more highly expressed in the leaves of CF047827 than in Reyan No. 2 under low-Pi conditions, was identified and functionally characterized. Its role in promoting phospholipid degradation and enhancing PUE was confirmed through heterologous expression in Arabidopsis. These findings provide insights and identify potential candidate genes for breeding high-PUE crop cultivars.
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