INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2023
·Vol. 24
·期 2
·1663
·
IF 5.6
Huan Jiang,Jiabao Hu,Huihui Xie,Man Zhang,Chunyang Guo,Youyi Zhang,Yaya Li,Cheng Zhang,Shanliang Xu,Danli Wang,Xiaojun Yan,Yajun Wang,Xubo Wang
The pharyngeal sac is a comparatively rare organ in the digestive tract among teleost fishes. However, our understanding of this remarkable organ in the silver pomfret (Pampus argenteus) is limited. In the present study, we examined the various morphological and histological characteristics of the pharyngeal sac using histochemical techniques and electron microscopy. The pharyngeal sac showed unique characteristics such as well-developed muscular walls, weakly keratinized epithelium, numerous goblet cells, and needle-like processes on the papillae. The porous cavity of the papillae contained numerous adipocytes and was tightly enveloped by type I collagen fibers. These structures might provide mechanical protection and excellent biomechanical properties for grinding and shredding prey. A comparison of gene expression levels between the pharyngeal sac and esophagus using RNA-seq showed that phenotype-associated genes (epithelial genes and muscle genes) were upregulated, whereas genes related to nutrient digestion and absorption were downregulated in the pharyngeal sac. These results support the role of the pharyngeal sac in shredding and predigesting food. Overall, these findings provide a clearer understanding of the pharyngeal sac morphology and explain the morphological adaptations of the digestive tract for feeding on gelatinous prey. To our knowledge, this is the first report on pharyngeal sac gene expression inP. argenteus.Keywords:Pampus argenteus;pharyngeal sac;morphology;papilla;transcriptome
研究领域:
生物学
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分子生物学
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动物学
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DOI
PubMed
高影响因子
Life-Basel
·
2023
·Vol. 13
·期 8
·1758
·
IF 3.2
Wenwen Song,Mingming Dai,Qianqian Shi,Chen Liang,Fangmeng Duan,Honghai Zhao
The potato rot nematode (Ditylenchus destructor) is one of the most destructive pests in the production of tuber crops, resulting in severely decreased yields and inferior product quality. In 2021, a great number of nematodes were detected in the roots ofMazus japonicus, a weed that is harmful to crop growth, in Qingdao, Shandong Province, China. The present study was undertaken to characterize and identify the nematodes isolated fromM. japonicusthrough morphological identification and molecular approaches. Their morphological characteristics were highly consistent with the descriptions ofD. destructorThorne, 1945. The nematodes collected fromM. japonicuswere identified asD. destructorhaplotype B using D1/D2 and sequence characterized amplified region (SCAR) primers. PCR-ITS-RFLP analysis was conducted to monitor intraspecific variations. In addition, the phylogenetic analysis of the internal transcribed spacer (ITS) demonstrated that thisD. destructorpopulation was clustered in haplotype B, supported by a 100% bootstrap value. Another assay, in whichM. japonicuswas inoculated with a mixture of the life stages ofD. destructor, was performed. This assay showed thatM. japonicusexhibited a high susceptibility toD. destructorin pots. This is the first record ofD. destructorparasitizingM. japonicusin China, and it is of great importance becauseM. japonicuscould be a potential reservoir forD. destructorin the field.Keywords:Ditylenchus destructor;Mazus japonicus;morphological characterization;molecular analysis
研究领域:
植物病理学
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线虫学
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分子生物学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhixiu Yang,Xiaoxuan Guo,Yong Chen,Lijing Gao,Ruiping Wei,Xiaomei Pan,Guomin Xiao
Despite significant advancements in the investigation of catalyst morphology in electrochemical CO 2 reduction (ECR), achieving precise control over multi-carbon (C 2+ ) products selectivity remains challenging. Thus, a sequence of catalysts with incorporation of CuO onto three-dimensional (3D) spherical CeO 2 were synthesized using a hydrothermal and calcination two-step method. The molar ratios of Cu(NO 3 ) 2 ·H 2 O to Ce(NO 3 ) 3 ·6H 2 O can manipulate morphology and oxygen vacancies (O v ) of Cu x Ce y catalysts, further influencing their product distribution in ECR . Materials characterization and electrochemical testing demonstrate that dual effects of spherical morphology and O v in the Cu x Ce y catalysts can enhance the activity and C 2 H 4 selectivity in ECR . To elaborate further on the topic, the pure CeO 2 exhibits excellent Faradaic efficiency (FE) of CH 4 with the value of 54.3 %. Cu 7 Ce 3 , among all Cu x Ce y catalysts, reaches a maximum value of 37.22 % at −1.2 V vs. RHE, possibly attributed to its highest O v concentration. More significantly, the possible reaction pathway was monitor by ATR-FTIR technique for Cu x Ce y during ECR is: CO 2 → *COOH →*CO → *CHO → *OCCOH → C 2 H 4 . The concept of dual tuning strategy by morphology and O v opens up a wide range of possibilities for the development of effective Cu-based catalysts for ECR.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 1
·213
·
IF 4.967
Jihua Duan,Guichang Jiang
Novel physically crosslinked polyurethane (PUII), based on isophorone diisocyanates, was prepared by a conventional two-step method. The chemical structures of the PUII were characterized by fourier transform infrared (FTIR), proton nuclear magnetic resonance (1H NMR), gel permeation chromatography (GPC), scanning electron microscopy (SEM) and DSC. The PUII hydrogels were subjected to solvent-induced self-assembly in THF + water to construct a variety of morphologies. The self-assembly morphology of the PUII was observed by scanning electron microscopy (SEM). The PUII films with different amounts (0.2%, 0.4%, 0.6%, 0.8%, 1.0%) of 1,3,5-Tris(2-hydroxyethyl)hexahydro-1,3,5-triazine (TNO) were challenged withEscherichia coli,Staphylococcus aureus,Bacillus subtilisandGray mold. The results showed that when a small amount of antibacterial agent were added, the antibacterial effect of films on Botrytis cinerea was more obvious. The mechanical evaluation shows that the antimicrobial polyurethane films exhibit good mechanical properties.Keywords:polyurethanes;morphology;electron microscopy;self-assembly
研究领域:
材料科学
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生物学
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DOI
PubMed
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2019
·Vol. 38
·期 1
·9-16
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IF 2.804
Man Shou-Kuo,Wang Xiao,Zheng Jin-Wen,An Ze-Sheng
Polymerization-induced self-assembly (PISA) is an efficient and versatile method to afford polymeric nano-objects with polymorphic morphologies. Compared to dispersion PISA syntheses based on soluble monomers, the vast majority of emulsion PISA formulations using insoluble monomers leads to kinetically-trapped spheres. Herein, we present aqueous emulsion PISA formulations generating worms and vesicles besides spheres. Two monomers with different butyl groups, n -butyl ( n BHMA) and tert -butyl ( t BHMA) α -hydroxymethyl acrylate, and thus possessing different water solubilities were synthesized via Baylis-Hillman reaction. Photoinitiated aqueous emulsion polymerizations of n BHMA and t BHMA employing poly(ethylene glycol) macromolecular chain transfer agents (macro-CTAs, PEG 45 -CTA, and PEG 113 -CTA) at 40 °C were systematically investigated to evaluate the effect of monomer structure and solubility on the morphology of the generated block copolymer nano-objects. Higher order morphologies including worms and vesicles were readily accessed for t BHMA, which has a higher water solubility than that of n BHMA. This study proves that plasticization of the core-forming block by water plays a key role in enhancing chain mobility required for morphological transition in emulsion PISA.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
Materials Today Nano
·
2021
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IF 8.109
C. Zeng,K. Wang,L. Pan,B. Li,J. Li,L. Zhou,W. Zhang,C. Liang,H. Pan
Green synthesis of nanocarbons from greenhouse gas CO 2 has been achieved by introducing lithium hydride into CO 2 system. However, the role of lithium hydride in determining the morphology and microstructure of nanocarbons is not revealed. Herein, the morphology and porosity of nanocarbons are found to be related to particle sizes of LiH. Gas blowing velocities of H 2 and CO 2 , increased with the decreasing particle size of LiH, and their distribution are revealed to the most important factors for the morphology and porosity of nanocarbons. The understanding of the roles of lithium hydride in green synthesis of nanocarbons may shed light on the design and large-scale synthesis of nanomaterials with desired morphology and microstructure.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
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2016
·
IF 1.86
Zhenrong Jia,Ying Wei,Xiaofeng Wang,Siwei Hu,Kai Yao,Fan Li
Herein, the liquid crystal molecule, 3,6-bis(5-(4-hexyl-phenyl)-2-thienyl)-2,5-bis(2-ethylhexyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (DPP-TP6), is introduced into P3HT/ZnO to control the morphology of the hybrid system. Induced by the self-assembly behavior of DPP-TP6 upon thermal treatment at the mesomorphase temperature, the dispersion of ZnO nanocrystals is effectively improved and the crystallinity and ordering of the P3HT is also enhanced, which provides more interfacial area for exciton dissociation and efficient path for carrier transport. On such basis, the power conversion efficiency of P3HT/ZnO hybrid solar cells is improved mainly due to the increase of J sc .
研究领域:
材料科学
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光伏技术
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纳米技术
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产品关联
DOI
高影响因子
Foods
·
2022
·Vol. 11
·期 22
·3741
·
IF 5.561
Ying Sun,Yang Yang,Lili Zheng,Xiaoyan Zheng,Dao Xiao,Shenwan Wang,Zhengke Zhang,Binling Ai,Zhanwu Sheng
Ultrasonic treatment combined with resveratrol modification was used to improve banana starch’s solubility, thermal stability, and digestion resistance. The solubility and freeze-thaw stability of the modified starch complex significantly increased. The oil-absorption capacity increased by 20.52%, and the gelatinization temperatures increased from 64.10–73.92 °C to 70.77–75.83 °C. The storage modulus (G′) and loss modulus (G″) increased after ultrasound and resveratrol treatment, and the proportion of viscosity was increased after composition with resveratrol. Additionally, the in vitro digestibility decreased from 44.12% to 40.25%. The modified complexes had release-control ability for resveratrol. X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy demonstrated that complex structures became more compact and organized, whereas crystalline patterns were unchanged. Scanning electron microscopy (SEM) showed that the resveratrol modification caused physical change on the granular surface by creating pores and fissures. The findings can help develop antioxidant functional foods using banana starch.Keywords:starch modification;thermal stability;rheological properties;crystallinity;morphology
研究领域:
食品科学
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生物化学
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DOI
PubMed
高影响因子
Agronomy-Basel
·
2023
·Vol. 13
·期 2
·554
·
IF 3.7
Hongli Chang,Weihong Ji,Yule Xie,Shujun He,Zhenfeng Xie,Fengjie Sun
The morphological characteristics of metamorphosis in stamens ofAnemone barbulataTurcz. were investigated using morphological and histological analyses. The results showed that stamens were transformed into either white sepaloid organs or more frequently green leaflike structures with successive variations. The extreme metamorphic stamen was represented as a three-lobed leaflike structure with a long stalk, highly consistent with the morphological characters of the normal leaves of the plant. It was hypothesized that the connective and two pollen sacs of the anther were transformed into the three lobes of the metamorphosed stamen, respectively. The depression and circinate stages were identified as the important and necessary processes in the transformation of stamens from axial to foliar organs, suggesting probably the alternative evolutionary process of the formation of anthers derived from foliar organs. The morphological traces of leaf, sepal, and carpel observed in the metamorphosed stamens suggested the homeotic transformations among these organs. The foliar stage in the ancestral stamens of angiosperms was reflected ontogenically in the metamorphosed stamens ofA. barbulata. Our findings of a series of metamorphic stamens probably represent the morphological evidence to support the hypothesis that the flowers of angiosperms were derived from metamorphic leaves with the progressive development mode in the evolution of floral organs.Keywords:Anemone barbulata;Ranunculaceae;metamorphosis;stamen;homeosis;progressive development
研究领域:
植物学
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进化生物学
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DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Wei Han,Li Zhong,Jixiang Zhang,Yifang Li,Nian Li,Zhenyang Wang,Jun Zhao
With the booming development of nanotechnology, an increasing number of nanomaterials and engineering strategies are being used to explore the effective inhibition of ice crystals, thereby reducing ice damage to biological samples and improving the efficiency of cryopreservation. However, the ice-inhibiting effect of nanomaterial shapes and their corresponding photothermal behavior have rarely been studied in depth in cell cryopreservation applications. Here, molybdenum disulfide (MoS2) nanomaterials with different morphologies [nanosheets (NSs), nanoflowers (FLs), and nanomicrospheres (MSs)] were controllably synthesized by a hydrothermal method to profile the influence of MoS2 morphology on ice suppression and rapid rewarming. The prepared MoS2 nanomaterials exhibited excellent capabilities for regulating the nucleation temperature and recrystallization size of ice crystals, which varied with morphology (MSs > FLs > NSs). Unique surface morphology, more functional groups on the surface that could form hydrogen bonds with ice/water molecules, and the adsorption-inhibition mechanism contributed to the excellent ice regulation performance. Surprisingly, the photothermal effect of MoS2 MSs was also the best as the temperature could sharply rise from 24 to 82 °C under 808 nm laser irradiation for 1 min. Finally, using MoS2 MSs as a cryoprotectant (CPA) to cryopreserve A549 cells, a cell survival rate of 85.3% was still achieved even when MoS2 MSs replaced 90% of dimethyl sulfoxide in the CPA solution. Our work is the first to correlate the shape variations of nanomaterials with their regulation of ice crystal behavior during the freezing-thawing process and photothermal properties, synergistically improving the efficiency of cell cryopreservation. This study provides guidance for the practical design of nanomaterials for collaborative deicing.
研究领域:
材料科学
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生物技术
·
纳米医学
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DOI
高影响因子
ULTRASONICS SONOCHEMISTRY
·
2019
·
IF 7.279
Wenhan Yang,Xiangli Kong,Yuxue Zheng,Weixuan Sun,Shiguo Chen,Donghong Liu,Huiling Zhang,Haitian Fang,Jinhu Tian,Xingqian Ye
To further investigate how controlled ultrasound treatments affect the morphology, physical property and fine structure of rice starch granules, the starch suspended in water was treated with different ultrasonic power levels (150, 300, 450 and 600 W) at 25 °C for 20 min. XRD, FT-IR and Raman spectroscopy were performed to characterise the long-range and short-range ordered structure of starch granules. Results indicated that ultrasound slightly destroyed the amorphous region of starch granules, while the A-type crystalline pattern remained unchanged. The result of chain length distributions showed that the fine structure of rice starch was not significantly changed by ultrasound treatment. SEM and particle size distribution demonstrated that ultrasound induced fissures and pores on the granule surface and elevated the homogeneity of granules, with minimum effect on the granule size . In addition, the thermal and pasting properties of rice starch were also measured by DSC and RVA. Results showed that after ultrasound treatments, the peak and breakdown viscosity increased, while the peak time, pasting temperature and gelatinisation enthalpy decreased. Overall, controlled ultrasound treatments dominantly modified the morphology and physical property of rice starch rather than the fine structure, providing additional information for the application of ultrasound on starch modification.
研究领域:
食品科学
·
生物化学
✓ 已验证
DOI
PubMed
高影响因子
LANGMUIR
·
2020
·
IF 3.557
Xuelian Gou,Zhiguang Guo
How to prepare multifunctional surfaces with high nucleation density and fast droplet removal during droplet condensation remains a challenge. It is believed that a water droplet on a superhydrophobic surface (SHS) in the Cassie state is inclined to convert to the Wenzel state under high-pressure or high-humidity conditions, which results in the pinning effect. Hence, it is necessary to form thermodynamically stable lubricant-infused surfaces (LISs) to be applied in water condensation, especially under extreme working conditions. In this work, CuO LISs with two different morphologies (chrysanthemum-like and dandelion-like structures) in the slippery state were prepared and the effect of surface morphology on water harvesting behavior was investigated. The results indicated that dandelion-like CuO consisting of nanoneedles exhibited inferior water harvesting behavior compared to chrysanthemum-like CuO consisting of nanolamellas due to worse lubricating oil loss. Furthermore, the strong intermolecular forces between the perfluoropolyether (PFPE) lubricating oil and perfluorodecanethiol (PFDT)-modified coating resulted in a durable lubricating layer, which exhibited favorable anti-icing, anticorrosion, and liquid repellency even under strong acid and alkali conditions, high shear force rate up to 7000 rpm, and long-time ultraviolet light irradiation for 12 h. This work paves the path for efficient droplet nucleation and removal, which has potential in water harvesting in arid regions and water condensation for power generation.
研究领域:
材料科学
·
表面工程
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）