

FOLLOWUS
1.School of Life Sciences, Huzhou University, Huzhou 313000, China
2.Jiangsu Shufeng Prawn Breeding Co., Ltd., Gaoyou 225654, China
yujiongying@outlook.com
yishaokui@foxmail.com
Received:24 September 2024,
Accepted:09 January 2025,
Online First:14 May 2025,
Published:01 January 2026
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ZHENG Xingyu,CAI Miaoying,SHEN Qi,et al.Transcriptomic dynamics in the hepatopancreas of Macrobrachium rosenbergii during thermal elimination of infection with Decapod Iridescent Virus 1[J].Journal of Oceanology and Limnology,2026,44(01):445-459.
ZHENG Xingyu,CAI Miaoying,SHEN Qi,et al.Transcriptomic dynamics in the hepatopancreas of Macrobrachium rosenbergii during thermal elimination of infection with Decapod Iridescent Virus 1[J].Journal of Oceanology and Limnology,2026,44(01):445-459. DOI: 10.1007/s00343-025-4256-4.
Decapod Iridescent Virus 1 (DIV1) is a recently discovered virus recognized for its high infectivity in
Macrobrachium
rosenbergii
. A thermal treatment was performed on DIV1-infected
M
.
rosenbergii
and the therapeutic efficacy was evaluated. In the DIV1 challenge experiment
the mortality rate in the challenged group was found to be 2.6 times greater than that in the control group
with the vir
al load in deceased individuals exceeding 5.41×10
7
copies/μg-DNA. The thermal treatment (TT) was administered at 36 °C for a duration of 16 d
followed by a temperature restoration (TR) period at 26 °C for 3 d. On the first day at 36 °C
an average viral concentration of 5.34×10 copies/μg-DNA
was detected in the survived individuals. RNA-seq analysis showed a significant upregulation of genes related to the lysosome pathway
including sialin-like isoform x2 (
slc17a5
)
beta-galactosidase-1-like protein 2 (
glb1
)
putative glucosylceramidase 3 (
gba
)
sphingomyelin phosphodiesterase-like isoform x2 (
smpd1
)
beta-hexosaminidase subunit alpha-like (
hexa_b
) and legumain-like protein (
lgmn
)
following a transient suppression period induced by thermal stress. Upon reaching 36 °C
the activation of heat shock protein 70 (
hsp70
) and heat shock protein 90 (
hsp90a
) was observed. Concomitantly
genes that implicated in energy production critical for DIV1 replication
such as hexokinase (
hk
) and microsomal glutathione s-transferase 3-like isoform x2 (
gst
)
were inhibited. These results collectively suggest that TT/TR treatments eliminated DIV1 in
M
.
rosenbergii
by activating the organism’s innate immune response and suppressing virus replication. This study provides a theoretical basis for utilizing thermal therapy in the management of viral infections in
M
.
rosenbergii
breeding programs
thereby facilitating the development of new strains resistant to DIV1.
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