Publications by authors named "Hongkuan Zhang"

The formation of broodstock gametes is closely linked to the yield and quality in aquaculture production, yet molecular mechanisms underlying this process remain insufficiently understood. The noble scallop Chlamys nobilis, an economically significant dioecious bivalve species, serves as an excellent model for studying gametogenesis. In this study, the adult scallops with testis at different developmental stage were chosen for histological examination and transcriptome analysis to dig genes related gonad development.

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Article Synopsis
  • * Analysis of gene structure and evolutionary relationships shows that these MKK genes are highly conserved among bivalves and are significantly expressed in tissues related to immunity.
  • * The findings indicate that these CnMKK genes respond strongly to temperature stress and Vibrio parahaemolyticus infection, highlighting their importance in bivalve immunity against biotic and abiotic challenges.
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In bivalve, development of female gonad is accompanied with accumulating lipids which provided energy resource for non-feeding larvae development. As the major transcriptional regulators of lipid metabolism, Srebps play pivotal role in lipid homeostasis during oogenesis. However, little work was conducted on Srebps function in bivalves.

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  • Gap junctions, essential for cell signaling and immune responses, are formed by connexins in vertebrates and innexins in invertebrates; this study focused on identifying GJ genes in the noble scallop Chlamys nobilis.
  • The research found 14 GJ genes in C. nobilis, revealing that these proteins are primarily hydrophilic and closely related to invertebrate proteins, with 10 conserved motifs similar to those in other bivalves.
  • Furthermore, expression analysis indicated that GJ genes are significantly affected by low temperature stress, highlighting their important role in the scallop's adaptation to environmental changes.
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  • The cytochrome P450 (CYP) gene superfamily is crucial for various physiological processes, but its specific roles in gonad development of the Pacific oyster (Crassostrea gigas) are largely unknown.
  • This study identified 116 CgCYP genes and analyzed their expression patterns, revealing significant variations in molecular weights and amino acid lengths, as well as 26 cis-acting elements associated with these genes.
  • Over-expression of 69 CgCYP genes during early gonad development suggests their importance, especially those like CgCYP1 and CgCYP15, which show higher expression in female gonads, indicating a key role in female reproductive development.
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As ectothermic invertebrates, mollusks are regarded as good environmental indicator species for determining the adverse effects of climate change on marine organisms. In the present study, the effects of cold stress on the tissue structure, antioxidant activity, and expression levels of genes were evaluated in the warm-water noble scallop Chlamys nobilis by simulating natural seawater cooled down during winter from 17 °C to 14 °C, 12 °C, 10 °C, and 9 °C. Firstly, the gill was severely damaged at 10 °C and 9 °C, indicating that it could be used as a visually indicative organ for monitoring cold stress.

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Sound in indoor spaces forms a complex wavefield due to multiple scattering encountered by the sound. Indoor acoustic communication involving multiple sources and receivers thus inevitably suffers from cross-talks. Here, we demonstrate the isolation of acoustic communication channels in a room by wavefield shaping using acoustic reconfigurable metasurfaces (ARMs) controlled by optimization protocols based on communication theories.

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  • Elastomers are crucial in both traditional industries and emerging tech fields, but they often suffer damage from electricity, heat, and force during use.
  • There's a need for new elastomer materials that maintain strong mechanical properties while being self-healing and environmentally friendly, despite challenges achieving this balance.
  • A new type of elastomer, made from carbon hydrazide and polydimethylsiloxane, shows impressive self-healing efficiency, high stretchability, and recyclability, making it a promising material for applications like flexible strain sensors.
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STAT (signal transducer and activator of the transcription) proteins, are a group of highly conserved transcription factors and fundamental components of the JAK-STAT signaling pathway. They play crucial roles in a variety of biological processes, such as immunity, proliferation, differentiation, and growth. However, little information is known regarding their role in gonad development and sex determination in mollusks.

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Doublesex and Mab-3-related transcription factor (Dmrt) is a type of transcription factor with a zinc-finger DM structural domain, which plays a significant role in sex determination and differentiation in animals. Although Dmrt has been reported in many vertebrates and invertebrates, it has rarely been studied in bivalves. In this study, a total of three members of the Dmrt gene family were identified and characterized in Crassostrea gigas, and all these CgDmrt genes contained a conserved DM domain.

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High stocking density has been regarded as an adverse factor in bivalve aquaculture. However, its subsequent molecular response to pathogenic bacteria has been little studied. In order to study the question, a novel MyD88 was first cloned using adult noble scallops Chlamys nobilis (CnMyD88), and its tissue distribution was investigated.

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Dielectric polyimides (PIs) are ubiquitous as insulation in electrical power systems and electronic devices. Generally, dynamic polyimide is required to solve irreversible failure processes of electrical or mechanical damage, for example, under high temperature, pressure, and field strength. The challenge lies in the design of the molecular structure of rigid polyimide to achieve dynamic reversibility.

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Carotenoids are natural pigments that provide many health benefits to living organisms. Although terrestrial plants are the major dietary source of carotenoids for humans, aquatic animals (especially fish and shellfish) are equally important because they are rich in certain important carotenoids lacking in fruits and vegetables. Although extensive research has focused on exploring the carotenoid content and composition in fish and shellfish, this information is poorly organized.

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At present no adequate annotation guidelines exists for incident report learning. This study aims at utilizing multiple quantitative and qualitative evidence to validate annotation guidelines for incident reporting of medication errors. Through multiple approaches via annotator training, annotation performance evaluation, exit surveys, and user and expert interviews, a mixed methods explanatory sequential design was utilized to collect 2-stage evidence for validation.

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Article Synopsis
  • Carotenoids are essential for living organisms, but animals like scallops cannot produce them and must acquire them from their diet.
  • A gene identified in noble scallops encodes a protein called StAR3, which is involved in carotenoid accumulation, with higher expression levels found in golden scallops compared to brown scallops.
  • The study revealed that StAR3 is a carotenoid-binding protein, and suppressing its expression leads to a significant decrease in carotenoid levels, highlighting its crucial role in carotenoid transport within scallops.
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The driving factors of climate change, especially ocean acidification (OA), have many detrimental impacts on marine bivalves. Hybridization is one of the important methods to improve environmental tolerance of animals and plants. In this study, we explored the feasibility of intraspecific hybridization as an OA mitigation strategy in noble scallop Chlamys nobilis (ecologically and economically important bivalve species).

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Omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA) are essential fatty acids for the growth, development and survival of virtually all organisms. There is increasing evidence that anthropogenic climate change has a direct and indirect impact on the availability of natural n-3 LC-PUFA. However, this information is fragmented and not well organized.

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Modern technological advances allow for the study of systems with additional synthetic dimensions. Higher-order topological insulators in topological states of matters have been pursued in lower physical dimensions by exploiting synthetic dimensions with phase transitions. While synthetic dimensions can be rendered in the photonics and cold atomic gases, little to no work has been succeeded in acoustics because acoustic wave-guides cannot be weakly coupled in a continuous fashion.

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Omega-3 Long-chain polyunsaturated fatty acids (n-3 LC-PUFA) are beneficial to human health. Since the industrial revolution, with the tremendous increase of human population, the supply of natural n-3 LC-PUFA is far lower than the nutritional need of n-3 LC-PUFA. Therefore, a new alternative source of natural n-3 LC-PUFA is urgently needed to reduce the supply and demand gap of n-3 LC-PUFA.

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This review focus on the current knowledge of non-coding RNAs (ncRNAs) in molluscs. In this review, we provide an overview of long ncRNAs (lncRNA), microRNAs (miRNA) and piwi-interacting RNAs (piRNA), followed by evidence for the regulation of ncRNAs in variety of biological process in molluscs, including development, biomineralization and innate immune response. This review advances our understanding on the roles of ncRNAs in molluscs and suggest the future direction to fully understand the epigenetic regulatory network of molluscs.

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Noble scallop Chlamys nobilis is an important marine bivalve that has been extensively cultured in the south coast of China since the 1980s. Unfortunately, since the late 1990s, the farmed scallops often suffered from regional mass mortality, which results in enormous economic losses to farmers and industries. In 2017, another mass mortality event occurred in Nan'ao Island, Shantou, China.

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Knots and links have been conjectured to play a fundamental role in a wide range of scientific fields. Recently, tying isolated vortex knots in the complex optical field has been realized. However, how to construct the acoustic vortex knot is still an unknown problem.

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Glutathione S-transferases (GSTs) play important roles in immunity by protecting organisms against the damage of reactive oxygen species (ROS). In this study, a pi-class GST cDNA sequence was first cloned from noble scallop Chlamys nobilis (named CnGSTp). The full length cDNA of CnGSTp was 922 bp, encoding a cytosolic protein of 202 amino acids residues, with predicted molecular masses of 23.

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High stocking densities have been shown to have adverse effects on the physiology of bivalves. The noble scallop Chlamys nobilis is one of the most important cultured shellfish in Southern China. However, the effects of scallop stocking density on its immunity is not well understood.

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Marine bacteria produce many bioactive compounds, including carotenoids. However, the quality of bacterium carotenoids is relatively unknown. Therefore, in this study, a novel carotenoids-producing bacterium Brevundimonas scallop Zheng & Liu was isolated from Chlamys nobilis.

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