Transcriptome and Proteome Analysis Revealed the Influence of High-Molecular-Weight Glutenin Subunits (HMW-GSs) Deficiency on Expression of Storage Substances and the Potential Regulatory Mechanism of HMW-GSs
文献类型: 外文期刊
作者: Zhao, Yun 1 ; Zhao, Jie 1 ; Hu, Mengyun 1 ; Sun, Lijing 1 ; Liu, Qian 1 ; Zhang, Yelun 1 ; Li, Qianying 1 ; Wang, Peinan 1 ; Ma, Wujun 2 ; Li, Hui 1 ; Gao, Huimin 4 ; Zhang, Yingjun 1 ;
作者机构: 1.Hebei Acad Agr & Forestry Sci, Inst Cereal & Oil Crops, Lab Crop Genet & Breeding Hebei, Shijiazhuang 050035, Peoples R China
2.Qingdao Agr Univ, Coll Agron, Qingdao 266109, Peoples R China
3.Murdoch Univ, Food Futures Inst, Coll Sci Hlth Engn & Educ, Perth 6150, Australia
4.Hebei Acad Agr & Forestry Sci, Inst Cash Crops, Shijiazhuang 050051, Peoples R China
关键词: wheat; HMW-GSs; seed storage substances; regulation mechanism; candidate genes
期刊名称:FOODS ( 影响因子:5.2; 五年影响因子:5.5 )
ISSN:
年卷期: 2023 年 12 卷 2 期
页码:
收录情况: SCI
摘要: The processing quality of wheat is affected by seed storage substances, such as protein and starch. High-molecular-weight glutenin subunits (HMW-GSs) are the major components of wheat seed storage proteins (SSPs); they are also key determinators of wheat end-use quality. However, the effects of HMW-GSs absence on the expression of other storage substances and the regulation mechanism of HMW-GSs are still limited. Previously, a wheat transgenic line LH-11 with complete deletions of HMW-GSs was obtained through introducing an exogenous gene Glu-1E(b)x to the wild-type cultivar Bobwhite by transgenic approach. In this study, comparative seed transcriptomics and proteomics of transgenic and non-transgenic lines at different seed developmental stages were carried out to explore the changes in genes and proteins and the underlying regulatory mechanism. Results revealed that a number of genes, including genes related to SSPs, carbohydrates metabolism, amino acids metabolism, transcription, translation, and protein process were differentially enriched. Seed storage proteins displayed differential expression patterns between the transgenic and non-transgenic line, a major rise in the expression levels of gliadins were observed at 21 and 28 days post anthesis (DPA) in the transgenic line. Changes in expressions of low-molecular-weight glutenins (LMW-GSs), avenin-like proteins (ALPs), lipid transfer proteins (LTPs), and protease inhibitors (PIs) were also observed. In addition, genes related to carbohydrate metabolism were differentially expressed, which probably leads to a difference in starch component and deposition. A list of gene categories participating in the accumulation of SSPs was proposed according to the transcriptome and proteome data. Six genes from the MYB and eight genes from the NAC transcription families are likely important regulators of HMW-GSs accumulation. This study will provide data support for understanding the regulatory network of wheat storage substances. The screened candidate genes can lay a foundation for further research on the regulation mechanism of HMW-GSs.
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