Evaluation of Biosynthesis, Accumulation and Antioxidant Activityof Vitamin E in Sweet Corn (Zea mays L.) during Kernel Development
文献类型: 外文期刊
作者: Xie, Lihua 1 ; Yu, Yongtao 2 ; Mao, Jihua 2 ; Liu, Haiying 1 ; Hu, Jian Guang 2 ; Li, Tong 4 ; Guo, Xinbo 1 ; Liu, Rui Ha 1 ;
作者机构: 1.South China Univ Technol, Sch Food Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China
2.Guangdong Acad Agr Sci, Crop Res Inst, Guangzhou 510640, Guangdong, Peoples R China
3.Key Lab Crops Genet Improvement Guangdong Prov, Guangzhou 510640, Guangdong, Peoples R China
4.Cornell Univ, Dept Food Sci, Stocking Hall, Ithaca, NY 14853 USA
关键词: sweet corn;vitamin E;gene expression;antioxidant activity;kernel development
期刊名称:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ( 影响因子:5.923; 五年影响因子:6.132 )
ISSN: 1422-0067
年卷期: 2017 年 18 卷 12 期
页码:
收录情况: SCI
摘要: Sweet corn kernels were used in this research to study the dynamics of vitamin E, by evaluatingthe expression levels of genes involved in vitamin E synthesis, the accumulation of vitamin E, and the antioxidant activity during the different stage of kernel development. Results showed that expression levels of ZmHPT and ZmTC genes increased, whereas ZmTMT gene dramatically decreased during kernel development. The contents of all the types of vitamin E in sweet corn had a significant upward increase during kernel development, and reached the highest level at 30 days after pollination (DAP). Amongst the eight isomers of vitamin E, the content of gamma-tocotrienol was the highest, and increased by 14.9 folds, followed by gamma-tocopherolwith an increase of 22 folds, and thecontents of isomers gamma-tocopherol, alpha-tocotrienol, delta-tocopherol, delta-tocotrienol, and beta-tocopherol were also followed during kernel development. The antioxidant activity of sweet corn during kernel development was increased, and was up to 101.8 +/- 22.3 mu mol of alpha-tocopherol equivlent/100 g in fresh weight (FW) at 30 DAP. There was a positive correlation between vitamin E contents and antioxidant activity in sweet corn during the kernel development, and a negative correlation between the expressions of ZmTMT gene and vitamin E contents. These results revealed the relations amongst the content of vitamin E isomers and the gene expression, vitamin E accumulation, and antioxidant activity. The study can provide a harvesting strategy for vitamin E bio-fortification in sweet corn.
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