Journal of Tropical Oceanography ›› 2022, Vol. 41 ›› Issue (5): 180-188.doi: 10.11978/2021095CSTR: 32234.14.2021095

• Marine Biology • Previous Articles     Next Articles

Differential responses of allometric individuals to immune stimuli in Pinctada fucata martensii

XU Hanzhi1,2(), ZHANG Hua1, XIONG Panpan1,2, HE Maoxian1()   

  1. 1. CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2021-07-27 Revised:2021-12-31 Online:2022-09-10 Published:2022-01-12
  • Contact: HE Maoxian E-mail:xuhz1995@163.com;hmx2@scsio.ac.cn
  • Supported by:
    National Shellfish Industry Technology System Project(CARS-49);National Natural Science Foundation of China(42006106);Natural Science Foundation of Guangdong Province(2020A1515011434);Science and Technology Program of Guangdong Province(2020B1212060058)

Abstract:

In this study, we investigated the immune performance of allometric individuals of the pearl oyster, Pinctada fucata martensii, compared the expression of immune-related genes (CuZn-SOD1, CuZn-SDO2, LAMP1, JRL, and Rab7) and changes in the activities of three immune enzymes (SOD, AKP and CAT) in large and small individuals after immune stimulation, and analyzed the differential response of allometric individuals to immune stimulation. The results showed that the immune-related genes and immune enzymes all responded to the immune stimuli. The relative expression levels of LAMP1, CuZn-SOD1 and CuZn-SOD2 genes and the changes of CAT and AKP activities were higher in small individuals than those in large individuals, while the relative expression levels of JRL and Rab7 genes and the changes of SOD activity were lower than those in large individuals. The basal expression of the JRL gene was much higher in the small individuals than that in the large ones, which may result in a smaller variation. These results indicated that the small individuals were more responsive to external stresses and had stronger immune response ability.

Key words: Pinctada fucata martensii, allometric individuals, immune stimulation, gene expression, enzyme activity

CLC Number: 

  • P735.54