The Physiological and Molecular Responses of Exogenous Selenium to Selenium Content and Fruit Quality in Walnut

作     者：Mufang Sun Xinran Hui Cuiling Tong Longyi Yuan Dejian Zhang 

作者机构：Xinyang Agriculture and Forestry UniversityXinyang464000China Tibet Plateau Walnut Industry Research InstituteYangtze UniversityCollege of Horticulture and GardeningJingzhou434025China Jingzhou Institute of TechnologyJingzhou434025China 

出 版 物：《Phyton-International Journal of Experimental Botany》 (国际实验植物学杂志（英文）)

年 卷 期：2023年第92卷第3期

页      面：851-860页

核心收录：

学科分类：0710[理学-生物学] 09[农学] 0902[农学-园艺学] 090201[农学-果树学] 

基　　金：supported by the Science and Technology Planning Project of Shannan Science and Technology Bureau of Tibet(2021Z21008) the Hubei Province‘14th Five-Year’Major Science and Technology Aid Tibet Project(SCXX-XZCG-22016) 

主　　题：Antioxidant system fruit quality mineral nutrient selenium walnut 

摘      要：To study the effect of exogenous selenium on fruit quality in walnut(Juglans regia L.),8-year-old walnut(Qingxiang)was taken as the research *** the fruit expansion stage,300 mg/L of sodium selenate,yeast selenium and sodium selenite solutions were applied on the leaf of walnut,and the selenium levels in leaves,pericarp and kernel were determined at the ripening *** fruit quality,mineral nutrient content,antioxidant enzyme activity,and related genes’expression were *** results showed that the three exogenous selenium increased the selenium levels in leaves,pericarp and kernel of *** also significantly increased fruit and kernel weights,and kernel linoleic acid,but markedly decreased kernel crude fat and saturated fatty *** spraying promoted the absorption of mineral nutrients such as potassium and zinc,but inhibited the absorption of calcium,and had no significant effect on iron and magnesium in the *** exogenous selenium increased the activities of superoxide dismutase(SOD),peroxidase(POD),ascorbate peroxidase(APX),and catalase(CAT)significantly in the *** for sodium selenate treatment significantly reduced malondialdehyde(MDA)content in the kernel,the other two selenium sources treatments had no significant effect on MDA and hydrogen peroxide(H2O2)*** also increased the expression of JrCu/Zn-SOD,Jr2-Cys POD,JrCyt-APX and JrCAT in kernel,to different *** implies that,in the walnut fruit enlargement period,the foliar spraying selenium could increase the selenium content of walnut,affect the mineral nutrient absorption,improve the antioxidant capacity and related genes’expression,and reduce the degree of peroxide,and then improve the quality of ***,yeast selenium showed the comprehensive effect of the best.