Transcriptomics analysis of hulless barley during grain development with a focus on starch biosynthesis

文献类型： 外文期刊

第一作者： Zeng, Xingquan

作者： Zeng, Xingquan;Wang, Yulin;Xu, Qijun;Wei, Zexiu;Yuan, Hongjun;Nyima, Tashi;Tang, Yawei;Zeng, Xingquan;Wang, Yulin;Xu, Qijun;Wei, Zexiu;Yuan, Hongjun;Nyima, Tashi;Tang, Yawei;Zeng, Xingquan;Wang, Yulin;Bai, Lijun;Xu, Qijun;Wei, Zexiu;Yuan, Hongjun

作者机构：

关键词： Hulless barley;Comparative transcriptome approach;Differentially expressed genes (DEGs);Starch synthesis-related genes (SSRGs)

期刊名称：FUNCTIONAL & INTEGRATIVE GENOMICS （ 影响因子：3.41； 五年影响因子：3.616 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Hulless barley, with its unique nutritional value and potential health benefits, has increasingly attracted attentions in recent years. However, the transcription dynamics during hulless barley grain development is not well understood. In the present study, we investigated the transcriptome changes during barley grain development using Illumina paired-end RNA-sequencing. Two datasets of the developing grain transcriptomes from two barley landraces with the differential seed starch synthesis traits were generated, and comparative transcriptome approach in both genotypes was performed. The results showed that 38 differentially expressed genes (DEGs) were found co-modulated in both genotypes during the barley grain development. Of those, the proteins encoded by most of those DGEs were found, such as alpha-amylase-related proteins, lipid-transfer protein, homeodomain leucine zipper (HD-Zip), NUCLEAR FACTOR-Y, subunit B (NF-YBs), as well as MYB transcription factors. More interestingly, two genes Hvulgare_GLEAN_10012370 and Hvulgare_GLEAN_10021199 encoding SuSy, AGPase (Hvulgare_GLEAN_10033640 and Hvulgare_GLEAN_10056301), as well as SBE2b (Hvulgare_GLEAN_10018352) were found to significantly contribute to the regulatory mechanism during grain development in both genotypes. Moreover, six co-expression modules associated with specific biological processes or pathways (M1 to M6) were identified by consensus co-expression network. Significantly enriched pathways of those module genes showed difference in both genotypes. These results will expand our understanding of the complex molecular mechanism of starch synthesis during barley grain development.

分类号： Q78`Q3

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