Journal of Tropical Oceanography ›› 2021, Vol. 40 ›› Issue (2): 83-89.doi: 10.11978/2020050CSTR: 32234.14.2020050

• Marine Biology • Previous Articles     Next Articles

Preliminary study on immunity function of aquaporin AQP4 in the pearl oyster Pinctada fucata martensii

PAN Xiaolan1,2(), LIU Huiru1,2, XU Meng1,2, XU Hanzhi1,2, ZHANG Hua1, HE Maoxian1()   

  1. 1. CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Applied Marine Biology, Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2020-05-22 Revised:2020-08-16 Online:2021-03-10 Published:2020-08-31
  • Contact: HE Maoxian E-mail:panxiaolan17@mails.ucas.edu.cn;hmx2@scsio.ac.cn
  • Supported by:
    Earmarked Fund for Modern Agro-industry Technology Research System(CARS-49);Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences(ISEE2018PY03);Shellfish and Large Algae Industry Innovation Team Project of Guangdong Province, China(2019KJ146);Science and Technology Planning Project of Guangdong Province, China(2017B0303014052)

Abstract:

To identify the immunity function of Aquaporin of Pinctada fucata martensii (PfAQP4), the mRNA expression patterns of PfAQP4 and immune-related genes were detected by qPCR after immunostimulation and RNA interference. The results showed that the mRNA expression of PfAQP4 in the mantle was significantly up-regulated at 24 h (p < 0.05), while that in the digestive gland was significantly down-regulated at 12 h, and increased at 24 h, 36 h and 48 h after LPS injection (p < 0.05). After poly (I : C) injection, the expression of PfAQP4 was significantly up-regulated in the mantle at 36 h and 48 h (p < 0.05), and up-regulated at 48 h in the digestive gland (p < 0.05). When PfAQP4 was knocked down by RNA interference, the mRNA expression of CuZn-SOD in the mantle was significantly down-regulated (p < 0.05); a significant positive correlation of expression level between CuZn-SOD and PfAQP4 was found (r = 0.818, p < 0.001). We showed that PfAQP4 plays an important role in the immune response of P. f. martensii, which provide new data for the innate immunity of P. f. martensii.

Key words: Pinctada fucata martensii, aquaporin 4, immunoregulation, RNA interference, gene expression

CLC Number: 

  • P735.4