

FOLLOWUS
1.Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao 266003, China
2.Lianyungang Marine and Fishery Development Promotion Center, Lianyungang 222000, China
3.Norwegian Institute for Water Research (NIVA), Bergen 5006, Norway
shanhongwei@ouc.edu.cn
Received:01 December 2024,
Online First:27 February 2025,
Published:01 November 2025
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LI Wenheng,LI Changjian,WANG Fang,et al.Regulation of ammonia stress adaptation in ,Penaeus ,vannamei gills: responses of endoplasmic reticulum stress and Ca,2+ homeostasis[J].Journal of Oceanology and Limnology,2025,43(06):1951-1961.
LI Wenheng,LI Changjian,WANG Fang,et al.Regulation of ammonia stress adaptation in ,Penaeus ,vannamei gills: responses of endoplasmic reticulum stress and Ca,2+ homeostasis[J].Journal of Oceanology and Limnology,2025,43(06):1951-1961. DOI: 10.1007/s00343-025-4279-x.
Endoplasmic reticulum (ER) stress and Ca
2+
homeostasis play important roles in the environmental adaptation of aquatic animals. To elucidate the response and correlation of ER stress and Ca
2+
homeostasis in the gills of
Penaeus
vannamei
under ammonia stress
we investigated the expression levels of genes related to ER stress and Ca
2+
homeostasis in the gills of
P
.
vannamei
exposed to 0- (control)
3.8-
7.6-
and 11.3-mg/L total ammonia nitrogen for 96 h. Results show that the relative gene expression levels of the ER stress indicators
Bip
eiF2α
ATF4
IRE1
and
XBP1s
were higher in the stress groups than in the control group at 12 and 48 h
reaching the maximum at 48 h (
P<
0.05). However
at 96 h
the levels of these indicators were lower in the 7.6- and 11.3-mg/L groups than in the control group. The relative expression levels of
SERCA
RyR
MCU
and
Letm
were significantly higher in the stress groups than in the control group at 12
24
and 48 h (
P<
0.05)
and the expression levels were positively correlated with the ammonia stress concentration. At 96 h
the expression levels of
SERCA
in the stress groups were lower than that in the control group
whereas the expression levels of
RyR
in the stress groups were significantly higher than that in the control group (
P<
0.05). The relative expression levels of
MCU
were not significantly different fr
om those in the control group. The relative expression levels of
IP
3
R
in the 7.6- and 11.3-mg/L groups were significantly lower than that in the control group during the ammonia stress period (
P<
0.05). Pearson’s correlation analysis showed significant correlations among NH
3
-N levels
the expression of ER stress indicator genes
and the expression of genes related to the regulation of Ca
2+
homeostasis. The above results indicate that ammonia stress could induce ER stress
and consequently changed the mitochondrial and ER Ca
2+
homeostasis in the gills of
P
.
vannamei
which contribute to its adaptive mechanisms under adverse environmental conditions.
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