Alternative splicing of a barley gene results in an excess-tillering and semi-dwarf mutant
文献类型： 外文期刊
作者： Hua, Wei 1 ; Tan, Cong 2 ; Xie, Jingzhong 3 ; Zhu, Jinghuan 1 ; Shang, Yi 1 ; Yang, Jianming 1 ; Zhang, Xiao-Qi 2 ; Wu, X 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Hangzhou 310021, Zhejiang, Peoples R China
2.Murdoch Univ, Western Barley Genet Alliance, Murdoch, WA 6150, Australia
3.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Cell & Chromosome Engn, Beijing 100101, Peoples R China
4.Dept Primary Ind & Reg Dev, 3 Baron Hay Court, South Perth, WA 6151, Australia
5.Yangtze Univ, Hubei Collaborat Innovat Ctr Grain Ind, Jingzhou 434025, Hubei, Peoples R China
期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）
ISSN： 0040-5752
年卷期： 2020 年 133 卷 1 期
页码：
收录情况： SCI
摘要： Key message An excess-tillering semi-dwarf gene Hvhtd was identified from an EMS-induced mutant in barley and alternative splicing results in excess-tillering semi-dwarf traits. Tillering and plant height are important traits determining plant architecture and grain production in cereal crops. This study identified an excess-tillering semi-dwarf mutant (htd) from an EMS-treated barley population. Genetic analysis of the F-1, F-2, and F-2:3 populations showed that a single recessive gene controlled the excess-tillering semi-dwarf in htd. Using BSR-Seq and gene mapping, the Hvhtd gene was delimited within a 1.8 Mb interval on chromosome 2HL. Alignment of the RNA-Seq data with the functional genes in the interval identified a gene HORVU2Hr1G098820 with alternative splicing between exon2 and exon3 in the mutant, due to a G to A single-nucleotide substitution at the exon and intron junction. An independent mutant with a similar phenotype confirmed the result, with alternative splicing between exon3 and exon4. In both cases, the alternative splicing resulted in a non-functional protein. And the gene HORVU2Hr1G098820 encodes a trypsin family protein and may be involved in the IAA signaling pathway and differs from the mechanism of Green Revolution genes in the gibberellic acid metabolic pathway.
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