Assessment of agronomic parameters and gene expression profiling of flax (Linum usitatissimum L.) upon treatment with brassinosteroid and its biosynthetic inhibitor
文献类型： 外文期刊
作者： Yuan, Hongmei 1 ; Ning, Kun 2 ; Guo, Wendong 3 ; Tao, Lei 4 ; Yu, Ying 1 ; Zhao, Lijuan 5 ; Wu, Ying 4 ; Zhang, Liguo 1 ; Wu 1 ;
作者机构： 1.Heilongjiang Acad Agr Sci, Inst Ind Crops, Harbin 150086, Heilongjiang, Peoples R China
2.Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China
3.Heilongjiang Acad Sci, Inst Nat Resources & Ecol, Harbin 150040, Heilongjiang, Peoples R China
4.Northeast Forestry Univ, Coll Life Sci, Harbin 150040, Heilongjiang, Peoples R China
5.Heilongjiang Acad Agr Sci, Crop Breeding Inst, Harbin 150086, Heilongjiang, Peoples R China
关键词： Flax; Brassinosteroid; Brassinazole; Agronomic parameters; Digital gene expression profile; Differentially expressed genes
期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）
ISSN： 0926-6690
年卷期： 2019 年 128 卷
页码：
收录情况： SCI
摘要： Phytohormones are key regulators of plant growth and development. The plant hormone brassinosteroid (BR) is known to modulate many plant physiological processes via unknown molecular mechanisms. Here, BR and its biosynthetic inhibitor brassinazole (Brz) were studied in flax (Linum usitatissimwn L.). Agronomic parameters were measured after spraying various concentrations of BR and Brz onto leaves during rapid growth and budding stages. Using Solexa/fllumina digital gene expression methodology to generate gene expression profiles, a total number of 3163 differentially expressed genes (DEGs) were identified in flax stem tissues treated with BR or Brz for 12 h during the budding stage. A stronger positive effect was exerted on plant agronomic parameters by Brz than BR, with 466, 2135, and 562 DEGs identified from pairwise comparisons of BR vs control check (CK), Brz vs CK, and Brz vs BR, respectively. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis assigned 817 DEGs to 237 biological pathways. DEGs related to cellulose and lignin biosynthesis, flax cell development, transcription factors, and phytohormones were up-regulated upon Brz treatment compared with CK. These results deepen the understanding of molecular mechanisms of plant hormone responses in flax, and provide new insights toward improving fiber yield and quality for flax.
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