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Mutual effects of nitric oxide and iron on the growth of marine algae

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Acta Oceanologica Sinica 2005年第5期24卷 100-109页

作者： liu chunying ZHANG Zhengbin CHEN Xiaorui Institute of Marine Chemistry Ocean University of China Qingdao 266003 China

Experiments on the effects of nitric oxide （NO） and iron on the growth of marine microalgae Skeletonema costatum were conducted. The results are as follows： exogenous NO could increase the growth rate of marine algae and raise the biomass remarkably under iron-deficient conditions. But it was a complicated process that the phytoplankton growth was influenced by NO and iron, which was controlled by the NO concentration, the nutrition level of the culture medium and the iron concentration, etc. Meanwhile, the iron concentration in the medium also has a direct influence on the growth and NO release capacity of the algae. Therefore, the effects of NO and iron on the growth of marine phytoplankton were mutual.

关键词： nitric oxide (NO) iron marine algae the mutual effects

Morphology and orientation evolution of Cu_(6)Sn_(5)grains on(001)Cu and(011)Cu single crystal substrates under temperature gradient

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Journal of Materials Science & Technology 2021年第36期95卷 29-39页

作者： Yuanyuan Qiao Xiaoying liu Ning Zhao Lawrence C M Wu chunying liu Haitao Ma School of Materials Science and Engineering Dalian University of TechnologyDalian 116024China Department of Materials Science and Engineering City University of Hong KongHong Kong Special Administrative RegionChina

The morphology and orientation evolution of Cu_(6)Sn_(5)grains formed on(001)Cu and(011)Cu single crystal substrates under temperature gradient(TG)were *** initial orientated prism-type Cu_(6)Sn_(5)grains transformed to non-orientated scallop-type after isothermal ***,the Cu_(6)Sn_(5)grains with strong texture were revealed on cold end single crystal Cu substrates by imposing *** Cu_(6)Sn_(5)grains on(001)Cu grew along their c-axis parallel to the substrate and finally merged into one grain to form a fully IMC joint,while those on(011)Cu presented a strong texture and merged into a few dominant Cu_(6)Sn_(5)grains showing about 30°angle with the *** merging between neighboring Cu_(6)Sn_(5)grain pair was attributed to the rapid grain growth and grain boundary ***,a model was put forward to describe the merging *** different morphology and orientation evolutions of the Cu_(6)Sn_(5)grains on single crystal and polycrystal Cu substrates were revealed based on crystallographic relationship and Cu *** method for controlling the morphology and orientation of Cu_(6)Sn_(5)grains is really benefitial to solve the reliability problems caused by anisotropy in 3 D packaging.

关键词： 3D packaging Single crystal Cu Temperature gradient Orientation Disregistry Grain boundary migration

Discovery of nitric oxide in marine ecological system and the chemical characteristics of nitric oxide

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Science China Chemistry 2006年第5期49卷 475-480页

作者： ZHANG Zhengbin XING Lei WU Zhenzhen liu chunying LIN Cai liu Liansheng Institute of Marine Chemistry Ocean University of China Qingdao 266003 China Institute of Marine Chemistry Ocean University of China Qingdao 266003 China Institute of Marine Chemistry Ocean University of China Qingdao 266003 China Institute of Marine Chemistry Ocean University of China Qingdao 266003 China Institute of Marine Chemistry Ocean University of China Qingdao 266003 China Institute of Marine Chemistry Ocean University of China Qingdao 266003 China

Nitric oxide was discovered in both the lab and the alga culture pond of Daya Bay (1―300 m3) before the growth of alga reached the maximum. The results included: (1) NO was detected before the growth of alga reached the maximum in the case of red tide alga and food alga, and the concentration of NO decreased rapidly after the growth maximum; (2) the curve between NO con-centration and time indicated that the concentration of NO in the daytime was more than that at night, and the maximal concentration of NO appeared in the midday (1―3 pm); (3) the growth of alga reached the maximum in the alga culture pond of Daya Bay in about 8―10 d, and NO was discovered in 5―7 d; (4) the measured NO concentration was 10-9 mol/L, 10-9―10-8 mol/L, and 10-8 mol/L for Haeterosigma akashiwo, mixed alga in Daya Bay and Chaetoceros Curvisetus individually; (5) the relation of illumination with NO production was discussed.

关键词： marine ecological system, the detection of nitric oxide, red tide alga, the chemical characteristics of nitric oxide production.

Distributions and Relationships of CO_2,O_2,and Dimethylsulfide in the Changjiang(Yangtze) Estuary and Its Adjacent Waters in Summer

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Journal of Ocean University of China 2018年第2期17卷 320-334页

作者： WU Xi TAN Tingting liu chunying LI Tie liu Xiaoshou YANG Guipeng Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education Ocean University of China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology College of Marine Life Sciences Ocean University of China

The distributions and relationships of O_2, CO_2, and dimethylsulfide (DMS) in the Changjiang (Yangtze) Estuary and its adjacent waters were investigated in June 2014. In surface water, mean O_2 saturation level, partial pressure of CO_2 (pCO_2), and DMS concentrations (and ranges) were 110% (89%–167%), 374μatm (91–640 μatm), and 8.53 nmol L^(-1) (1.10–27.50 nmol L^(-1)), respectively. The sea-to-air fluxes (and ranges) of DMS and CO_2 were 8.24 μmol m^(-2)d^(-1) (0.26–62.77 μmol m^(-2)d^(-1)), and -4.7 mmol m^(-2)d^(-1) (-110.8-31.7 mmol m^(-2)d^(-1)), respectively. Dissolved O_2 was oversaturated, DMS concentrations were relatively high, and this region served as a sink of atmospheric CO_2. The pCO_2 was significantly and negatively correlated with the O_2 saturation level, while the DMS concentration showed different positive relationships with the O_2 saturation level in different water masses. In vertical profiles, a hypoxic zone existed below 20 m at a longitude of 123?E. The stratification of temperature and salinity caused by the Taiwan Warm Current suppressed seawater exchange between upper and lower layers, resulting in the formation of a hypoxic zone. Oxidative de-composition of organic detritus carried by the Changjiang River Diluted Water (CRDW) consumed abundant O_2 and produced additional CO_2. The DMS concentrations decreased because of low phytoplankton biomass in the hypoxic zone. Strong correlations ap-peared between the O_2 saturation level, pCO_2 and DMS concentrations in vertical profiles. Our results strongly suggested that CRDW played an important role in the distributions and relationships of O_2, CO_2, and DMS.

关键词： O2 partial pressure of CO2(pCO2) dimethylsulfide(DMS) Changjiang Estuary distribution relationship

Comprehensive analyses of the proteome and ubiquitome revealed mechanism of high temperature accelerating petal abscission in tree peony

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Horticultural Plant Journal 2024年第1期10卷 205-222页

作者： chunying liu Ziqi liu Yanchao Yuan Yuxi Zhang Yifu Fang Junqiang Chen Shupeng Gai Key Laboratory of Plant Biotechnology in Shandong Province College of Life SciencesQingdao Agricultural UniversityQingdaoShandong 266109China Shandong Academy of Forestry JinanShandong 250014China

Tree peony(Paeonia suffruticosa Andrews)is a well-known ornamental plant with high economic value,but the short fluorescence is a key obstacle to its ornamental value and industry *** temperature accelerates flower senescence and abscission,but the associated mechanisms are poorly *** this study,the tandem mass tag(TMT)proteome and label-free quantitative ubiquitome from tree peony cut flowers treated with 20℃for 0 h(RT0),20℃or 28℃for 60 h(RT60 or HT60)were examined based on morphological observation,***,6970 proteins and 1545 lysine ubiquitinated(Kub)sites in 844 proteins were *** residues(such as glutamate and aspartate)neighboring the Kub sites were in preference,and 36.01%of the Kub sites were located on the protein *** differentially expressed proteins(DEPs)and Kub-DEPs in HT60 vs RT60 were mainly enriched in ribosomal protein,protein biosynthesis,secondary metabolites biosynthesis,flavonoid metabolism,carbohydrate catabolism,and auxin biosynthesis and signaling revealed by GO and KEGG analysis,accompanying the increase of endogenous abscisic acid(ABA)accumulation and decrease of endogenous indoleacetic acid(IAA)***,the expression patterns of six enzymes(SAMS,ACO,YUC,CHS,ANS and PFK)putatively with Kub modifications were analyzed by proteome and real-time quantitative *** cell-free degradation assays showed PsSAMS and PsACO proteins could be degraded via the 26 S proteasome system in tree peony ***,a working model was proposed for the acceleration of flower senescence and abscission by high *** summary,all results contributed to understanding the mechanism of flower senescence induced by high temperature and prolonging fluorescence in tree peony.

关键词： Tree peony Proteome Ubiquitome High temperature Flower senescence

Study on patterns and chemical features of NO effect on marine phytoplankton growth

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Science China Chemistry 2005年第4期48卷 376-384页

作者： ZHANG Zhengbin LIN Cai liu chunying XING Lei WU Zhenzhen SUN Feng Institute of Marine Chemistry Ocean University of ChinaQingdao 266003China Institute of Marine ChemistryOcean University of ChinaQingdao 266003China Institute of Marine ChemistryOcean University of ChinaQingdao 266003China Institute of Marine ChemistryOcean University of ChinaQingdao 266003China Institute of Marine ChemistryOcean University of ChinaQingdao 266003China Institute of Marine ChemistryOcean University of ChinaQingdao 266003China

This article discusses the patterns of NO effect on marine phytoplankton growth from chemical *** experimental results of four algae,which are Platymonas hal-golandica ***,Platymonas subcordiformis,Skeletonema costatum and Nitzschia closterium farma minutissima,are as follows:(i) In f/2 medium or f/50 medium,the growth of these four algae was obviously promoted or inhibited when nitric oxide of different concentrations was added once or twice each day during the cultivation;(ii) The NO effects on the growth of marine phytoplankton are in normal *** phytoplankton has different optimum NO concentration,which is consistent with the influence of NO on the growth of high plants;(iii) The effect of NO on Platymonas halgolandica ***,which is a food alga,is different from that on the red tide algae Skeletonema costatum and Nitzschia closterium farma *** authors put forward a new opinion that every alga has its own NO threshold *** the above results may provide new clues to understand the formation of red tide.

关键词： nitric oxide (NO), marine phytoplankton (red tide algae and food algae), optimum NO concentration, NO threshold concentration, influencing patterns.

Sqh is involved in the regulation of Ci stability in Hh signaling pathway

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Journal of Molecular Cell Biology 2015年第6期7卷 584-587页

作者： chunying liu Yue Xiong Jing Feng Lei Zhang Yun Zhao State Key Laboratory of Cell Biology Innovation Center for Cell Signaling NetworkInstitute of Biochemistry and Cell BiologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200031China School of Life Science and Technology ShanghaiTech UniversityShanghai 200031China

Dear Editor,Hedgehog(Hh)pathway is widely involved in cell growth and differentiation during both vertebrate and invertebrate *** of Hh pathway couldcausevarioushumandiseases,including birth defects and *** Drosophila,Cubitus interruptus(Ci),the homologue of mammal Glioblastomas(Gli),is a key transcription factor of Hh *** activity andstabilityofCi/Gliare regulatedbyHhconcentration,and further precisely induce downstream gene *** studies have suggested that in the absence of Hh,full-length CiFL(Ci155)is partially degraded into the repressor form CiR(Ci75),which blocks downstream gene expressions(Chen and Jiang,2013),through Cul1-Slimb-based E3 ligase-mediated proteolysis(Aza-Blanc et al.,1997;Jia et al.,2002;Price and Kalderon,2002)。

关键词： diseases stability absence

PsRGL1 negatively regulates chilling- and gibberellin-induced dormancy release by PsF-box1-mediated targeting for proteolytic degradation in tree peony

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Horticulture Research 2023年第5期10卷 49-60页

作者： Linqiang Gao Demei Niu Tianyu Chi Yanchao Yuan chunying liu Shupeng Gai Yuxi Zhang College of Life Sciences Qingdao Agricultural UniversityQingdao 266109China University Key Laboratory of Plant Biotechnology in Shandong Province Qingdao 266109China

Tree peony bud endodormancy is a common survival strategy similar to many perennial woody plants in winter,and the activation of the GA signaling pathway is the key to breaking *** signal transduction is involved in many physiological *** the GA-GID1-DELLA regulatory module is conserved in many plants,it has a set of specific components that add complexity to the GA response *** proteins are key switches in GA ***,there is an urgent need to identify the key DELLA proteins involved in tree peony bud dormancy *** this study,the prolonged chilling increased the content of endogenously active ***1 among three DELLA proteins was significantly downregulated during chilling-and exogenous GA3-induced bud dormancy release by cell-free degradation assay,and a high level of polyubiquitination was *** PsRGL1 accelerated bud dormancy release by increasing the expression of the genes associated with dormancy release,including PsCYCD,PsEBB1,PsEBB3,PsBG6,and *** F-box protein family members responded to chilling and GA3 treatments,resulting in PsF-box1 *** two-hybrid and BiFC assays indicated that only PsF-box1 could bind to PsRGL1,and the binding site was in the C-terminal ***-box1 overexpression promoted dormancy release and upregulated the expression of the dormancy-related *** addition,yeast two-hybrid and pull-down assays showed that PsF-box1 also interacted with PsSKP1 to form an E3 ubiquitin *** findings enriched the molecular mechanism of the GA signaling pathway during dormancy release,and enhanced the understanding of tree peony bud endodormancy.

关键词： release tree breaking

Broad-spectrum and powerful neutralization of bacterial toxins by erythroliposomes with the help of macrophage uptake and degradation

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Acta Pharmaceutica Sinica B 2022年第11期12卷 4235-4248页

作者： chunying liu Shuangrong Ruan Ying He Xuejing Li Yuefei Zhu Honglan Wang Hanwei Huang Zhiqing Pang School of Pharmacy Fudan UniversityKey Laboratory of Smart Drug DeliveryMinistry of EducationShanghai 201203China The Institute for Biomedical Engineering&Nano Science Tongji University School of MedicineShanghai 200092China Department of Biomedical Engineering Columbia UniversityNew YorkNY 10027USA Institute of Hematology Union HospitalTongji Medical CollegeHuazhong University of Science&TechnologyWuhan 430022China

Anti virulence strategy has been considered as one of the most promising approaches to combat drug-rcesistant bacterial ***-forming toxins(PFTs)are the largest class of bacterial toxins,inficting their virulence ffect through creating pores on the cell ***,curent solutions for eliminating PFTs are mostly designed based on their molecular structure,requiring customized design for different *** the present study,we employed erythroliposome(denoted as RM-PL),a biomimetic platform constructed by artificial lipid membranes and natural erythrocyle membranes,to necutralize different hemolytic PFTs regardless of their molecular *** tested with model PFTs,including a-hemolysin,listeriolysin O,and streptolysin O,RM-PL could completely inhibit toxin-induced hemolysis in a concentration-dependent *** vivo studies further confirmed that *** eficiently neuralize various toxins and save animals'lives without causing damage to 0rgans or *** addition,we explored the underlying mechanisms of this efficient detoxification ability and found that it was mainly macrophages in the spleen and the liver that took up RM-PL-absorbed toxins through a variety of endocytosis pathways and digested them in *** summary,the biomimetic RM-PL presented a promising system for broad-spectrum and powerful toxin neutralization with a mech-anism of lysosome-mediaed loxin degradation.

关键词： Eythroliposome Broad-spectrum detoxifcation Hybrid nanovesicle Pore-forming toxins Macrophage uptake Red blood cell membrane Atificial lipid membrane