PfmPif97-like regulated by Pfm-miR-9b-5p participates in shell formation in Pinctada fucata martensii

Autoři: Xinwei Xiong aff001;  Bingyi Xie aff001;  Zhe Zheng aff001;  Yuewen Deng aff001;  Yu Jiao aff001;  Xiaodong Du aff001
Působiště autorů: Fishery College, Guangdong Ocean University, Zhanjiang, China aff001;  Guangdong Technology Research Center for Pearl Aquaculture and Process, Guangdong Ocean University, Zhanjiang, China aff002
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
doi: 10.1371/journal.pone.0226367


Mollusk shell matrix proteins are important for the formation of organic frameworks, crystal nucleation, and crystal growth in Pinctada fucata martensii (P. f. martensii). MicroRNAs (miRNAs) are endogenous small non-coding RNAs that play important roles in many biological processes, including shell formation. In this study, we obtained the full-length sequence of Pif97-like gene in P. f. martensii (PfmPif97-like). PfmPif97-like was mainly distributed in mantle pallial and mantle edge. Correlation analysis indicated that the average shell thickness and weight showed a positive correlation with PfmPif97-like expression (P < 0.05). The inner surface of the nacreous layer and prismatic layer showed atypical growth when we knocked down the expression of PfmPif97-like by RNA interference (RNAi). We used a luciferase reporter assay to identify that miR-9b-5p of P. f. martensii (Pfm-miR-9b-5p) downregulated the expression of PfmPif97-like by interacting with the 3′-untranslated region (UTR) while we obtained the same result by injecting the Pfm-miR-9b-5p mimics in vivo. After injecting the mimics, we also observed abnormal growth in nacre layer and prismatic layer which is consistent with the result of RNAi. We proposed that PfmPif97-like regulated by Pfm-miR-9b-5p participates in shell formation of P. f. martensii. These findings provide important clues about the molecular mechanisms that regulate biomineralization in P. f. martensii.

Klíčová slova:

Larvae – MicroRNAs – Oysters – Protein sequencing – Reverse transcriptase-polymerase chain reaction – Scanning electron microscopy – Sequence motif analysis – Biomineralization


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2019 Číslo 12