Transcriptome analysis of scyphozoan jellyfish Rhopilema esculentum from polyp to medusa identifies potential genes regulating strobilation

文献类型： 外文期刊

第一作者： Ge, Jianlong

作者： Ge, Jianlong;Liu, Changlin;Tan, Jie;Bian, Li;Chen, Siqing;Ge, Jianlong;Liu, Changlin;Tan, Jie;Bian, Li;Chen, Siqing

作者机构：

关键词： Rhopilema esculentum; Scyphozoan jellyfish; Strobilation; Transcriptome

期刊名称：DEVELOPMENT GENES AND EVOLUTION （ 影响因子：0.9； 五年影响因子：2.395 ）

ISSN： 0949-944X

年卷期： 2018 年 228 卷 6 期

页码：

收录情况： SCI

摘要： Strobilation is a unique asexual reproduction mode of scyphozoan jellyfish, through which benthic polyp develops into pelagic medusa. It is an orderly metamorphosis process triggered by environmental signals. However, the knowledges of molecular mechanisms under the drastic morphological and physiological changes are still limited. In this study, the transcriptomes from polyps to juvenile medusae at different stages were characterized by RNA-seq in scyphozoan jellyfish Rhopilema esculentum. Among 96,076 de novo assembled unigenes, 7090 differentially expressed genes (DEGs) were identified during the developmental stages. The co-expression pattern analysis of DEGs yielded 15 clusters with different expression patterns. Among them, a cluster with 388 unigenes was related to strobila. In this specific cluster, the GO terms related to sequence-specific DNA binding transcription factor activity and sequence-specific DNA binding were significantly enriched. Transcription factors, including segmentation protein even-skipped-like, segmentation polarity protein engrailed-like, homeobox proteins Otx-like, Twist-like and Cnox2-Pc-like, as well as genes such as RxR-like and Dmrtf-like, were identified to be potentially involved in strobilation. Their expression patterns and the other 11 TFs/genes involved in strobilation were confirmed with qRT-PCR methods. The present study pointed out the role of transcription factors in strobilation and produced a list of novel candidate genes for further studies. It could provide valuable information for understanding the molecular mechanisms of jellyfish strobilation.

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