Identification of microRNAs involved in astaxanthin accumulation responding to high light and high sodium acetate (NaAC) stresses in Haematococcus pluvialis
文献类型： 外文期刊
作者： Wang, Xiaodong 1 ; Miao, Xuexia 2 ; Chen, Gao 3 ; Cui, Yulin 4 ; Sun, Fengjie 6 ; Fan, Jianhua 5 ; Gao, Zhengquan 1 ; Men 1 ;
作者机构： 1.Shandong Univ Technol, Sch Life Sci, Zibo 255049, Peoples R China
2.Chinese Acad Sci, China Natl Ctr Bioinformat, Beijing Inst Genom, Key Lab Genom & Precis Med, Beijing 100101, Peoples R China
3.Shandong Acad Agr Sci, Biotechnol Res Ctr, Shandong Prov Key Lab Genet Improvement, Ecol & Physiol Crops, Jinan 250100, Peoples R China
4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resource Utilizat, Yantai 264003, Peoples R China
5.East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China
6.Georgia Gwinnett Coll, Sch Sci & Technol, 1000 Univ Ctr Lane, Lawrenceville, GA 30043 USA
关键词： MicroRNAs; Astaxanthin; Deep sequencing; High light stress; Sodium acetate stress; Transcriptome
期刊名称：ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS （ 影响因子：4.008； 五年影响因子：4.555 ）
ISSN： 2211-9264
年卷期： 2021 年 54 卷
页码：
收录情况： SCI
摘要： The growth and astaxanthin production of unicellular Haematococcus pluvialis is affected by both the high light and sodium acetate (NaAC) stresses. There are sparse on studies of the regulatory pathways of microRNAs (miRNAs) and their target genes in response to high light and NaAC stresses in H. pluvialis. In this study, transcriptomic analysis was used to identify the key target genes of miRNA regulation under both high light and NaAC stresses. A total of 434 (including 29 novel) miRNAs were identified, which were mainly enriched in metal ion binding and transport, and involved in basic metabolic pathways, such as pyruvate metabolism, ubiquitin mediated proteolysis, and oxidative phosphorylation. A total of 115 (out of 434) miRNAs were detected in response to high light and NaAC stresses. A total of 83 and 46 miRNAs significantly expressed under high light and NaAC stresses were considered as high light and NaAC stress responsive miRNAs, respectively. 14 miRNAs responded to both high light and NaAC stresses. Some miRNAs that regulate differentially expressed target genes had been identified. In the high light treatment group, 38 regulatory pairs were identified. In NaAc treatment group, 40 regulatory pairs were identified. These results shed light on the regulatory mechanisms of miRNAs responding to high light and NaAC stresses in H. pluvialis, further providing support for understanding the molecular mechanisms of miRNA regulation involved in astaxanthin synthesis in H. pluvialis.
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