The mother-of-pearl martens is the main shellfish that cultivates seawater pearls in China and the world, has extremely high economic value, and is also an important scientific research material for studying biomineralization.
The team led by Researcher He Maoxian, Key Laboratory of Sustainable Utilization of Marine Biological Resources, Chinese Academy of Sciences (relying on the South China Sea Institute of Oceanography), has made good progress in the response of pearl oyster immunity and mineralization genes to changes in environmental factors in recent years Transcriptome databases of four types of pearl shells, including mother-of-pearl, mother-of-pearl, mother-of-pearl and penguin pearl shells were obtained; the comparison of cluster analysis of GO, COG and KEGG showed that the cluster distribution of these four pearl shells was basically the same, and These data can be mutually verified and complemented, which lays the foundation for the research of functional genes related to pearl oyster growth, development, immunity and pearl / shell formation.
The carbon dioxide emitted by human activities caused the pH of the ocean to decrease and the temperature to rise. The researchers took the mother-of-pearl as the object and conducted a study on the effect of low pH and high temperature on the gene expression of calcification and heat shock protein of the mother-of-pearl. It was found that low pH and the interaction between low pH and high temperature significantly affected the expression of certain calcification genes (aspein, calmodulin and nacrein), and Hsp70 was significantly affected by low pH, high temperature and their interaction. It has laid the foundation for adaptability to environmental changes.
The researchers also cloned the nuclear transcription factor (NF-κB) PfRelish, tumour necrosis factor receptor-associated factor 3 (TRAF3) and other genes, and analyzed their expression patterns under pathogenic stimulation, indicating their participation The host's immune response.
The above-mentioned research results will provide theoretical guidance and reference for the cultivation and protection of mother-of-pearl.
The above studies were published in PloS ONE (2012, 7 (3): e33679), Marine Biotechnology (2012, DOI 10.1007 / s10126-012-9484-x) and Fish & Shellfish Immunology (2012, 33: 652-658; 659- 666), which has attracted attention at home and abroad.
The research work was supported by the National Natural Science Foundation of China, the "863" project and the Knowledge Innovation Project of the Chinese Academy of Sciences.
New progress has been made in the study of functional genes of pearl oyster
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