Effect of decreasing temperature on the strobilation of Aurelia sp.1

• Published in: Journal of oceanology and limnology Vol. 36; no. 2; pp. 465 - 472
• Main Authors: Shi, Yan, Yu, Zhigang, Zhen, Yu, Wang, Guoshan, Wang, Xungong, Mi, Tiezhu
• Format: Journal Article
• Language: English
• Published: Heidelberg Science Press 01.03.2018; Springer Nature B.V
• Subjects: Biology; Cosmopolitan species; Down-regulation; Earth and Environmental Science; Earth Sciences; Gene expression; Growth rate; Marine invertebrates; Oceanography; Proliferation; Prophase; Retinoid X receptors; Temperature; retinoid x receptor (RxR); CL390; moon jellyfish; strobila
• ISSN: 2096-5508; 2523-3521
• DOI: 10.1007/s00343-017-6210-6

The worldwide proliferation of marine jellyfish has become a crucial ecological and social issue, and as a cosmopolitan species, Aurelia spp. have received increasing scientific attentions. In the present study, the responses of strobilation in Aurelia sp.1 to decreasing temperature were illuminated through the expression levels of the retinoid x receptor (RxR) gene and the gene encoding a secreted protein, CL390. We observed that a higher final temperature decreased the strobilation prophase and strobilation interphase periods, and the growth rate of the strobilae ratio increased with increasing CL390 gene expression. The ratio of strobilae at 12°C was highest, and the strobilae showed the higher releasing ratios at both 12°C and 16°C compared with those at 4°C and 8°C. Furthermore, more ephyrae were released at the higher final temperature. Additionally, up-regulation and down-regulation of the CL390 gene were observed in response to the four decreasing temperatures. Although the four CL390 gene transcript levels increased more significantly than the transcript levels of the RxR gene, similar trends were observed in both genes.