Cyclophilin D (referred to as HsCypD) was obtained from the freshwater pearl mussel (Hyriopsis schlegelii). The full-length cDNA was 2 671 bp, encoding a protein consisting of 367 amino acids. HsCypD was determined to be a hydrophilic intracellular protein with 10 phosphorylation sites and four tetratricopeptide repeat (TPR) domains, but no signal peptide. The core sequence region YKGCIFHRIIKDF...

Oceanic uptake of anthropogenic carbon dioxide results in decrease in seawater pH and increase in temperature. In this study, we demonstrated the synergistic effects of elevated seawater temperature and declined seawater pH on gene expression patterns of aspein, calmodulin, nacrein, she-7-F10 and hsp70 in the pearl oyster Pinctada fucata. Under 'business-as-usual' scenarios, four treatments wer...

Three large and robust shells of freshwater pearl mussel (Margaritifera margaritifera) from Lapland were studied. Internal shell-growth increments, showing annual periodicity, provided information about the ontogenetic age and growth of the mussels. Increment widths generally ranged between 0.4 mm and 30 μm and showed exponential growth trends. Moreover, it was shown that the increment series o...

Plastic waste in the oceans is a growing concern due to its size diversity, ubiquitous nature and impact on both marine organisms ecosystems. While threatened by this plastic litter, aquaculture industries also represent one of major sources. In French Polynesia, black-lip pearl oyster (Pinctada margaritifera) farming no exception. Wild spat collection has been described as source pollution bec...

MicroRNAs (miRNAs) are noncoding RNA molecules that function as negative regulators of target genes. In our previous research, 258 pm-miRNAs were identified in Pinctada martensii by Solexa deep sequencing. Pm-miR-2305 was one of the identified pm-miRNAs with a potential function in biomineralization. In the present study, the precursor of pm-miR-2305 was predicted with 96 bp, containing a chara...