Analysis of the transcriptome data in Litopenaeus vannamei reveals the immune basis and predicts the hub regulation-genes in response to high-pH stress

• Published in: PLOS ONE
• Main Authors: Huang, Wen, Li, Hongmei, Cheng, Chuhang, Ren, Chunhua, Chen, Ting, Jiang, Xiao, Cheng, Kaimin, Luo, Peng, Hu, Chaoqun
• Format: Report
• Language: English
• Published: PUBLIC LIBRARY SCIENCE 2018
• Subjects: Science & Technology - Other Topics; Multidisciplinary Sciences; GLUTATHIONE-S-TRANSFERASE; CRUSTACEAN BRINE SHRIMP; JUVENILE WHITE SHRIMP; RNA-SEQ; MOLECULAR CHARACTERIZATION; SEAWATER ACIDIFICATION; VIBRIO-ALGINOLYTICUS; OCEAN ACIDIFICATION; HIGH-TEMPERATURE; SALINITY; Alf; Pacific; Ocean acidification
• Online Access: http://ir.gig.ac.cn/handle/344008/40762; https://doi.org/10.1371/journal.pone.0207771

Soil salinization. erodes the farmlands and poses a serious threat to human life, reuse of the saline-alkali lands as cultivated resources becomes increasingly prominent. Pacific white shrimp (Litopenaeus vannamei) is an important farmed aquatic species for the development and utilization of the saline-alkali areas. However, little is known about the adaptation mechanism of this species in terms of high-pH stress. In the present study, a transcriptome analysis on the gill tissues of L. vannamei in response to high-pH stress (pH 9.3 +/- 0.1) was conducted. After analyzing, the cyclic nucleotide gated channel-Ca2+ (CNGC-Ca2+) and patched 1 (Ptc1) were detected as the majority annotated components in the cAMP signaling pathway (KO04024), indicating that the CNGC-Ca2+ and Ptc1 might be the candidate components for transducing and maintaining the high-pH stress signals, respectively. The immunoglobulin superfamily (IgSF), heat shock protein (HSP), glutathione s-transferase (GST), prophenoloxidase/phenoloxidase (proPO/PO), superoxide dismutase (SOD), antilipopolysaccharide factor (ALF) and lipoprotein were discovered as the major transcribed immune factors in response to high-pH stress. To further detect hub regulation-genes, protein-protein interaction (PPI) networks were constructed; the genes/proteins "Polymerase (RNA) II (DNA directed) polypeptide A" (POLR2A), "Histone acetyltransferase p300" (EP300) and "Heat shock 70kDa protein 8 '' (HSPA8) were suggested as the top three hub regulation-genes in response to acute high-pH stress; the genes/proteins "Heat shock 70kDa protein 4 '' (HSPA4), "FBJ murine osteosarcoma viral oncogene homolog" (FOS) and "Nucleoporin 54kDa" (NUP54) were proposed as the top three hub regulation-genes involved in adapting endurance high-pH stress; the protein-interactions of "EP300-HSPA8" and "HSPA4-NUP54" were detected as the most important biological interactions in response to the high-pH stress; and the HSP70 family genes might play essential roles in the adaptation of the high-pH stress environment in L. vannamei. These findings provide the first insight into the molecular and immune basis of L. vannamei in terms of high-pH environments, and the construction of a PPI network might improve our understanding in revealing the hub regulation-genes in response to abiotic stress in shrimp species and might be beneficial for further studies.