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Expression Characteristics Analysis of CesA/Csl genes in Flax During the Fast Growing Stage

文献类型: 外文期刊

作者: Yuan, Hongmei 1 ; Guo, Wendong 2 ; Zhao, Lijuan 1 ; Yu, Ying 3 ; Chen, Si 1 ; Cheng, Lili 1 ; Kang, Qinghua 1 ; Song, Xix 1 ;

作者机构: 1.Heilongjiang Acad Agr Sci, Room 501,Chuangxin Bldg,368 Xuefu Rd, Harbin, Peoples R China

2.Heilongjiang Acad Sci, Inst Nat Resources & Ecol, Harbin, Peoples R China

3.Guizhou Univ Tradit Chinese Med, Sch Basic Med, Guiyang, Peoples R China

4.Northeast Forestry Univ, Coll Life Sci, Harbin, Peoples R China

关键词: Flax; CesA; Csl; expression pattern; protein-protein interaction network; secondary cell wall

期刊名称:JOURNAL OF NATURAL FIBERS ( 影响因子:5.323; 五年影响因子:4.183 )

ISSN: 1544-0478

年卷期:

页码:

收录情况: SCI

摘要: Expression characteristics of predicted CesA/Csl genes of fiber flax variety 'Diana' were investigated using RNA-seq data obtained during the fast-growing stage. First, flax stem anatomic analysis revealed differing developmental processes from bottom to top, with middle and lower stem fiber cells exhibiting significantly thickened cell walls. Moreover, stem cellulose/hemicellulose content exhibited positional biases, with a top-to-bottom increase in cellulose content and bottom-to-top increase in hemicellulose content observed. Most CesA/Csl genes were predominantly expressed in stems, roots, and less in leaves. The correlations between the expression levels of CesA/Csl genes and the contents of cellulose and hemicellulose were analyzed. The expression levels of LuCesA4, LuCesA8A and LuCesA8B genes showed significantly positive correlations with cellulose content (P < 0.05), while expression levels of two LuCesA3, three LuCesA6, two LuCslA2, and four LuCslC genes revealed significantly positive correlations with hemicellulose content (P < 0.05). CesA/Csl protein interaction network analysis revealed five transcription factors (TFs) that had high protein-protein interaction (PPI) scores with CesA/Csl proteins: LuNAC10 (Lus10015392), LuNAC12 (Lus10001664), LuNAM (Lus10017915), LuMyb42 (Lus10038913), LuMyb46 (Lus10027369). Therefore, these TFs may play critical regulatory roles in cellulose/hemicellulose synthesis. This study provides a theoretical foundation for investigating flax fiber cell wall synthesis and regulatory mechanisms.

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