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Transcriptome Analysis of Two Flax Varieties at Different Developmental Stages Reveals Significant Differential Expression of Genes Related to Stem Fiber Development

文献类型： 外文期刊

作者： Yu, Ying 1 ; Yuan, Hongmei 1 ; Zhao, Dongsheng 1 ; Yao, Yubo 1 ; Zhou, Fei 1 ; Cheng, Lili 1 ; Huang, Wengong 1 ; Zhang, 1 ;

作者机构： 1.Heilongjiang Acad Agr Sci, Inst Ind Crops, 368 Xuefu Rd, Harbin, Heilongjiang, Peoples R China

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

关键词： Flax; fiber; differentially expressed genes; transcriptome; qRT-PCR; stem

期刊名称：JOURNAL OF NATURAL FIBERS （ 2020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： Flax stem bast fiber, a natural raw material used to make textiles, possesses poor heat and dye resistance, excessive stiffness and low elasticity. To improve fiber quality and quantity, flax fiber development-related differentially expressed genes (DEGs) were identified using RNA-seq of middle stems of Agatha and White Flower varieties during the rapid growth period and mature green stage. There were 300 and 486 DEGs at two developmental stages between the two varieties, respectively. Comparisons of DEGs between developmental stages yielded 2504 DEGs for Agatha and 2986 DEGs for White Flower. Of these, 710 and 1182 DEGs were solely expressed in Agatha and White Flower, respectively. For both varieties, the plant circadian rhythm pathway yielded most DEGs, highlighting circadian rhythm regulation was important during flax fiber development. Notably, 59 transcription factors were uniquely expressed in Agatha, 73 in White Flower and 94 in both varieties. Expression of 15 cellulose synthase A genes in both varieties varied significantly between developmental stages. Expression patterns of eight DEGs measured using qRT-PCR confirmed RNA-seq results. Thus, several interesting genes described here warrant future molecular mechanistic studies to learn their roles in fiber formation toward improving flax fiber quality through molecular breeding.

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