Transcriptomics of developing grains reveals putative candidate genes for grain zinc and iron in bread wheat cultivar Zincol-2016
文献类型： 外文期刊
作者： Naseer, Samar 1 ; Sun, Mengjing 2 ; Bibi, Bushra 3 ; Qayyum, Humaira 1 ; Khan, Muhammad Ramzan 3 ; Hao, Chenyang 2 ; Zhang, Xueyong 2 ; Hao, Yuanfeng 2 ; Rasheed, Awais 1 ; He, Zhonghu 2 ;
作者机构： 1.Quaid I Azam Univ, Dept Plant Sci, Islamabad 45320, Pakistan
2.Chinese Acad Agr Sci CAAS, Inst Crop Sci, State Key Lab Crop Gene Resources & Breeding, 12 Zhongguancun South St, Beijing 100081, Peoples R China
3.Natl Inst Genom & Appl Biotechnol NIGAB, Natl Agr Res Ctr NARC, Islamabad 45500, Pakistan
4.Allama Iqbal Open Univ, Dept Biol, Islamabad 44000, Pakistan
关键词： Wheat; RNAseq; Zn/Fe homeostasis; SNPs
期刊名称：JOURNAL OF CEREAL SCIENCE （ 影响因子：3.9； 五年影响因子：4.2 ）
ISSN： 0733-5210
年卷期： 2024 年 118 卷
页码：
收录情况： SCI
摘要： A high grain zinc wheat cultivar, Zincol-2016, was released in Pakistan to mitigate mineral malnutrition. Here, we used RNAseq based approach to reveal transcriptional landscape of its developing grains, and to identify genetic variants in zinc (Zn) and iron (Fe) homeostasis genes. Differential gene expression analysis identified 8370 differentially expressed genes (DEGs) over the course of grain filling. The profiling of 265 Fe/Zn homeostasis genes revealed the homeologs of TaNAS9 , TaFER1, TaNAAT2 , TaDMAS, TaZIFL5-A , TaZIFL5-D , TaZIP14-B , TaNRAMP3 , TaVIT1, TaPRI2-D , TabZIPF1-7B , TabZIPF1-7D , TabZIPF2-5A , and TabZIPF2-5B had increased expression in Zincol-2016 relative to other cultivars from expVIP database. The variant calling identified 358 SNPs and 34 InDels in the Fe/Zn homeostasis genes. Two of those SNPs in TaZIP14-B ( TraesCS3B02G140400 ), and TaNAAT2-B ( TraesCS1B02G300600 ), were associated with grain zinc and iron concentrations (GZnC and GFeC) in a diverse panel of 145 wheat cultivars. The Zincol-type alleles of both genes significantly increased GZnC and GFeC by 7.3 -8.6% and 5.9 -6.3%, respectively. In addition, 8 SNPs causing missense mutation and 2 InDels causing frameshift mutation were found unique to Zincol. The present study forms a basis for understanding the genetic basis of high GZnC and GFeC in Zincol-2016 and can help efforts to biofortify other wheat varieties.
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