72886必赢欢迎光临王珊珊博士将在我院作学术讲座，欢迎广大师生届时前往。

题目：Biofortification of iron content by regulating a NAC transcription factor in maize

时间：2023年12月19日16时20分

地点：实训楼A205

内容简介：

lron (Fe) deficiency remains widespread among people in developing countries. To help solve this problem, breeders have been attempting to develop maize cultivars with high yields and high Fe concentrations in the kernels. We conducted a genome-wide association study and identified a gene,ZmNAC78(NAM/ATAF/CUC DOMAIN TRANSCRIPTION FACTOR 78), that regulates Fe concentrations in maize kernels. We cultivated maize varieties with both high yield and high Fe concentrations in their kernels by using a molecular marker developed from a 42-base pair insertion or deletion (indel) in the promoter ofZmNAC78.ZmNAC78expression is enriched in the basal endosperm transfer layer of kernels, and the ZmNAC78 protein directly regulates messenger RNA abundance of Fe transporters. Our results thus provide an approach to develop maize varieties with Fe-enriched kernels.