Root Exudates from Areca catechu L. Intercropping System Promote Nutrient Uptake and Sustainable Production of Piper nigrum L.
文献类型： 外文期刊
作者： Li, Zhiyuan 1 ; Zhao, Yaqi 3 ; Zu, Chao 3 ; Li, Zhigang 3 ; Zheng, Weiquan 3 ; Yu, Huan 3 ; Gao, Shengfeng 3 ; Liu, Shichao 3 ; Zhang, Baogui 4 ; Wang, Xinxin 7 ; Wang, Can 3 ; Yang, Jianfeng 3 ;
作者机构： 1.China Agr Univ, Sanya Inst, Sanya 572025, Peoples R China
2.China Agr Univ, Coll Hort, Beijing 100193, Peoples R China
3.Chinese Acad Trop Agr Sci, Spice & Beverage Res Inst, Xinglong 571533, Peoples R China
4.China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China
5.Minist Agr & Rural Affairs Peoples Republ China, Key Lab Genet Resources Utilizat Spice & Beverage, Wanning 571533, Peoples R China
6.Hainan Prov Key Lab Genet Improvement & Qual Regul, Wanning 571533, Peoples R China
7.Hebei Agr Univ, Coll Hort, Baoding 071001, Peoples R China
关键词： intercropping; root exudates; bacterial community; soil metabolites; mineral nutrients
期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）
ISSN：
年卷期： 2025 年 15 卷 2 期
页码：
收录情况： SCI
摘要： Piper nigrum-Areca catechu intercropping mitigates soil problems related to continuous P. nigrum cropping, but the exact reason for this is not clear. In this study, the intercropping system increased P. nigrum's single plant weight by 27.0-55.5% and unit yield per hectare by 5.1-33.5% in 2019-2022. Intercropping altered the metabolic profiles of root exudates from both species, with increases in flavonoids (epicatechin and 4 ',5,6,7-Tetramethoxyflavone), alkaloids (litebamine), and amino acids (proline betaine, L-homocysteic acid and L-homocysteic acid). Intercropping further increased the abundance of dominant soil bacteria, including GAL15 (354.9%) and Bacteroidota (70.4%) in the P. nigrum rhizosphere, and Firmicutes (141.8%) and WPS2 (75.3%) in the A. catechu rhizosphere. In the intercropping system, the abundance of soil flavonoids, including tangeritin, trifolirhizin, and hexamethylquercetagetin, which participated in improving nutrient absorption and plant growth, increased by 106.4 similar to 356.0%, 28.9 similar to 45.5%, and 45.2 similar to 127.1%, respectively, during the whole growing period. Overall, intercropping with A. catechu promoted carbon input to the P. nigrum soil via root exudates. This increased the diversity of P. nigrum rhizosphere beneficial bacterial communities, as well as the amounts of nutrients and plant growth-promoting secondary metabolites. Together, these effects improved nutrient uptake and utilization, thereby driving the sustainable production of P. nigrum, and ultimately achieving higher yields.
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