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Transcriptional profiling of Auricularia cornea in selenium accumulation

文献类型： 外文期刊

作者： Li, Xiaolin 1 ; Yan, Lijuan 2 ; Li, Qiang 3 ; Tan, Hao 1 ; Zhou, Jie 1 ; Miao, Renyun 1 ; Ye, Lei 1 ; Peng, Weihong 1 ; Zhan 1 ;

作者机构： 1.Sichuan Acad Agr Sci, Soil & Fertilizer Inst, Chengdu 610066, Sichuan, Peoples R China

2.Friedrich Schiller Univ Jena, Inst Biodivers, Chair Aquat Geomicrobiol, D-07743 Jena, Germany

3.Sichuan Acad Agr Sci, Res Ctr Edible Fungi, Chengdu 610066, Sichuan, Peoples R China

4.Sichuan Univ, Coll Life Sci, Chengdu 610065, Sichuan, Peoples R China

5.Sichuan Agr Univ, Coll Resources, Dept Microbiol, Chengdu 611130, Sichuan, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2019 年 9 卷

页码：

收录情况： SCI

摘要： Auricularia cornea is a widely cultivated edible fungus with substantial nutritive value. This study aimed to enrich the multifunctional bionutrient element selenium in A. cornea to improve its quality and explore the accumulation of selenium in the fungus using high-throughput RNA-Seq technology. In general, the treatment group with a 100 mu g/g supply of selenium outperformed the other treatment groups in terms of high yield, rich crude polysaccharides and a high total selenium concentration. Additional evidences demonstrated the budding and mature phases were two typical growth stages of A. cornea and were important for the accumulation of selenium. Therefore, the budding and mature phase tissues of A. cornea in the treatment group with a 100 mu g/g supply of selenium were used for transcriptome analysis and compared to those of a control group that lacked additional selenium. A total of 2.56 x 105 unigenes from A. cornea transcriptome were assembled and annotated to five frequently used databases including NR, GO, KEGG, egg NOG and SwissProt. GO and KEGG pathway analysis revealed that genes involved in metabolic process and translation were up-expressed at the budding stage in response to selenium supplementation, including amino acid metabolism, lipid metabolism, ribosome. In addition, the differential gene expression patterns of A. cornea suggested that the up-expressed genes were more likely to be detected at the budding stage than at the mature stage. These results provide insights into the transcriptional response of A. cornea to selenium accumulation.

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