Comprehensive evaluation of biosynthesis, accumulation, regulation of folate and vitamin C in waxy maize (Zea mays L. var. ceratina) with kernel development
文献类型： 外文期刊
作者： Shan, Qi-Ji 1 ; Liu, Jian-Hua 3 ; Li, Wu 3 ; Wang, Hong 1 ; Hu, Xiao-Dan 1 ; Li, Tong 5 ; Hu, Jian-Guang 3 ; Guo, Xin-Bo; 1 ;
作者机构： 1.South China Univ Technol, Sch Food Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China
2.Overseas Expertise Intro Ctr Discipline Innovat F, Ctr 111, Guangzhou 510640, Guangdong, Peoples R China
3.Guangdong Acad Agr Sci, Crop Res Inst, Guangzhou 510640, Guangdong, Peoples R China
4.Key Lab Crops Genet Improvement Guangdong Prov, Guangzhou 510640, Guangdong, Peoples R China
5.Cornell Univ, Dept Food Sci, Stocking Hall, Ithaca, NY 14853 USA
关键词： Zea mays L. var. ceratina; Kernel development; Folate; Vitamin C; Biosynthesis
期刊名称：JOURNAL OF CEREAL SCIENCE （ 影响因子：3.616； 五年影响因子：3.891 ）
ISSN： 0733-5210
年卷期： 2019 年 87 卷
页码：
收录情况： SCI
摘要： Waxy maize presents a series of changes during kernel development. In this study, contents and gene expression profiles of folate and vitamin C during kernel development of waxy maize were explored. Six inbreds, three colors of kernels, four developing periods and two planting seasons in the same experimental fields were analyzed. We found that contents of folate and vitamin C declined overall through four development periods in both seasons, while the manners of gene expression varied, responding to different weather conditions. Key genes in synthetic pathways of folate and vitamin C corresponded to the variation of their contents. GTP cyclohydrolase (GTPCH) played an important role in the biosynthesis of folate and vitamin C during kernel development. Another key gene, dehydroascorbate reductase (DHAR), was associated with the dynamic balance of vitamin C pool in responding to weather. Considering the contents and gene expression of folate and vitamin C, results indicated that appropriate conditions (temperature, humidity, rainfall and radiation) could facilitate the kernel development of waxy maize. Furthermore, coordinate regulation might happen between the biosynthesis of folate and vitamin C. This study promoted a better understanding of the reason for choosing kernels from midlate period of development in waxy maize harvest.
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