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De novo Assembly and Transcriptome Analysis of Cultivated Strawberry (Fragaria x ananassa) Receptacles under Freezing Stress

文献类型： 外文期刊

作者： Chen, Xiaodong 1 ; Zhao, Mizhen 1 ; Pang, Fuhua 1 ; Wang, Jing 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Jiangsu Key Lab Hort Crop Genet Improvement, Inst Pomol, Nanjing, Jiangsu, Peoples R China

关键词： Freezing stress; Low temperatures; Receptacle tissue; Strawberry (Fragaria x ananassa); Transcriptome

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2018 年 20 卷 7 期

页码：

收录情况： SCI

摘要： The octoploid strawberry (Fragaria x ananassa) is an important species cultivated and consumed around the world for its excellent flavour and nutritional value. Strawberry floral organs are very sensitive to low-temperature stress, which often leads to economic loss. In the current study RNA-Seq method was used to understand the strawberry receptacle response to freezing stress. The results indicated that out of 356,807,838 clean reads obtained from six libraries, 42,365 unigenes were generated through assembling them in a de novo method. These unigenes were further annotated in Pfam, KEGG, Swissprot, String, and NR database. A total of 528 differentially expressed genes were identified in our research. Among these genes, 428 genes were upregulated and 100 genes were downregulated by freezing stress. The GO classification and KEGG enrichment analysis showed that the most highly represented pathways were environmental adaptation and carbohydrate metabolism. Moreover, we identified 3 CBF/DREB transcription factor genes and 1 COR gene in up-regulated DEGs. This analysis reveals the global transcriptomic response of strawberry receptacles to freezing stress and may help to understand the molecular mechanisms involved in freezing stress tolerance in strawberry receptacles. (C) 2018 Friends Science Publishers

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