Wheat and faba bean intercropping changes phenolic acids from roots to rhizosphere

被引:1
作者
Xiao, Jingxiu [1 ]
Zhu, Ying-An [2 ]
Yin, Xinhua [3 ]
Tang, Li [1 ]
Zheng, Yi [1 ,4 ]
机构
[1] Yunnan Agr Univ, Coll Resources & Environm, Kunming, Yunnan, Peoples R China
[2] Yunnan Agr Univ, Coll Hort & Landscape, Kunming, Yunnan, Peoples R China
[3] Univ Tennessee, Dept Plant Sci, Jackson, TN USA
[4] Yunnan Open Univ, Kunming 650223, Peoples R China
基金
中国国家自然科学基金;
关键词
Exudation rate; Phenolic acids; Rhizodeposition; Root exudations; Wheat and faba bean intercropping; CUCUMBER SEEDLING GROWTH; EXUDATION; L; ALLELOCHEMICALS; ALLELOPATHY; COLLECTION; EFFICIENCY; SYSTEM; YIELD;
D O I
10.1016/j.chnaes.2021.10.002
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
The changed phenolic acids (PAs) allelochemicals exuded by the roots induced by interspecific interactions is related to intercropping alleviates soil-borne disease. However, the presence of PAs in roots and root exudations and their rhizodeposition under intercropping are still unclear. Hydroponic and soil experiments of wheat, faba bean, and wheat intercropped with faba bean were conducted, and the major compositions and contents of PAs in roots, root exudations, and rhizospheric soil were determined. The results showed that rho-hydroxybenzoic, vanillic, and syringic acids were the major components of PAs in roots, root exudations, and rhizospheric soil in a wheat and faba bean intercropping system. The compositions and percentages of PAs in roots of faba bean were altered when faba bean intercropped with wheat. The total exudation rate of PAs in root exudations was decreased by 30%-60% under the wheat and faba bean intercropping (W//F) system as compared to mono-cropped faba bean (MF). rho-hydroxybenzoic acid was identified in the root exudation of both MF and mono-cropped wheat (MW), but not detected in the intercropping on 60 days after transplanting. Vanillic acid was only detected in the root exudation of MF on 30 days after transplanting. The rhizodepostion of vanillic and cumaric acid were decreased at both branching and pod setting stages in W//F as compared to MF. In conclusion, interspecific interaction changed the compositions and contents of PAs in faba bean roots and root exudations. W//F constrained vanillic acid exuded by roots and decreased vanillic and coumaric acid rhizodeposition by faba bean, which provides insight into root-soil interactions in the intercropping systems.
引用
收藏
页码:89 / 98
页数:10
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