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Effect of disease on Tilapia skin, gill and pond microbiomes

ABSTRACT: Effects of reported diseased condition on tilapia (Oreochromis niloticus) skin and gill, and pond microbiomes in earthen aquaculture ponds

PROVIDER: PRJEB85247 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR14208100_1.fastq.gz	Fastqsanger.gz
	ERR14208100_2.fastq.gz	Fastqsanger.gz
	ERR14208200_1.fastq.gz	Fastqsanger.gz
	ERR14208200_2.fastq.gz	Fastqsanger.gz
	ERR14208300_1.fastq.gz	Fastqsanger.gz

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Transcriptome analysis of miRNA–mRNA interactions revealed regulation of multiple signaling pathways in genetically improved farmed tilapia (GIFT, Oreochromis niloticus) gill tissues under hypoxia stress

Project description:Dissolved oxygen (DO) is the basis of fish survival, and proper DO level is an important condition to ensure the normal growth of fish. Hypoxic environment is prone to disturb the normal breathing and metabolism of fish, which in turn affects their growth and survival. Gill tissue is the respiratory organs of fish and is in direct contact with the external environment. However, there are few reports on the molecular regulatory mechanism of genetically improved farmed tilapia (GIFT, Oreochromis niloticus) gill tissues in response to hypoxia. Here, we first examine the hypoxia-induced damage of gill tissue by hematoxylin-eosin staining, and then constructed miRNA and mRNA libraries of GIFT gill tissue at 96h of hypoxia stress by a high-throughput sequencing technology, each library has three biological replicates. Gill lamellae of GIFT showed capillary rupture and red blood cell enlargement and overflow under hypoxia stress. Transcription sequencing results showed that the clean reads of miRNA libraries were 9,627,953-13,544,660; the clean reads of mRNA libraries were 43,817,776-53,130,102. Based on the miRNA-mRNA pairs screening principles and mRNA sequencing results, we selected and verified seven differentially expressed miRNAs and their potential target genes. The sequencing results were consistent with the qRT-PCR validation results. These selected miRNA-mRNA pairs are mainly concentrated in the signaling pathways of immune response and metabolic regulation. This study provides new insights into the mechanisms of fish adaptation under hypoxic stress.

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