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| 1 | TiO_2-loaded activated carbon fiber:Hydrothermal synthesis,adsorption properties and photo catalytic activity under visible light irradiation显示文摘TiO_2-loaded activated carbon fibers(ACF) were prepared by a hydrothermal method.The samples were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),Fourier transform infrared(FT1R) spectrometry and UV-vis diffuse reflectance spectra(DRS).SEM images showed that the TiO_2nanoparticles were deposited on the surface of ACF,and the particle size and loading amount of TiO_2were varied by changing the initial concentration of tetrabutyl titanate(TBOT).The results of an ash experiment showed that the loading amounts of TiO_2 were 18.4%,43.3%,52.5%,75.1%,and 91.1%for initial concentrations of TBOT of 0.07,014,0.21,0.28,and 0.35 mol/L,respectively.Physical interactions played an important role in the formation of TiO_2/ACF composite fibers that absorb UV and visible light.Compared with those of ACF,improved adsorption and photocatalytic activity toward Rhodamine B(RhB)were observed for TiO_2/ACF composite fiber.The Rhodamine B could be removed efficiently by TiO_2/ACF composite fibers,and the TiO_2 loading amount had a significant effect on the photocatalytic activity of TiO_2/ACF composite fibers. | Hao Meng Wei Hou Xinxin Xu Junli Xu Xia Zhang | 2014 | Particuology2014，12，3： | 10 |
| 2 | Discriminated sgRNAs-Based SurroGate System Greatly Enhances the Screening Efficiency of Plant Base-Edited Cells显示文摘The development of CRISPR/Cas9-mediated base editing has made genomic modification more efficient. However, selection of genetically modified cells from millions of treated cells, especially plant cells, is still challenging. In this study, an efficient surrogate reporter system based on a defective hygromycin resistance gene was established in rice to enrich base-edited cells. After step-by-step optimization, the Discriminated sgRNAs-based SurroGate system (DisSUGs) was established by artificially differentiating the editing abilities of a wild-type single guide RNA (sgRNA) targeting the surrogate reporter gene and an enhanced sgRNA targeting endogenous sites. The DisSUGs enhanced the efficiency of screening base-edited cells by 3- to 5-fold for a PmCDA1-based cytosine-to-tyrosine base editor (PCBE), and 2.5- to 6.5-fold for an adenine base editor (ABE) at endogenous targets. These targets showed editing efficiencies of <25% in the conventional systems. The DisSUGs greatly enhanced the frequency of homozygous substitutions and expanded the activity window slightly for both a PCBE and an ABE. Analyses of the total number of single-nucleotide variants from whole-genome sequencing revealed that, compared with the no-enrichment PCBE strategy, the DisSUGs did not alter the frequency of genome-wide sgRNA-independent off-target mutations, but slightly increased the frequency of target-dependent off-target mutations. Collectively, the DisSUGs developed in this study greatly enhances the efficiency of screening plant base-edited cells and will be a useful system in future applications. | Wen Xu Yongxing Yang Ya Liu Guiting Kang Feipeng Wang Lu Li Xinxin Lv Si Zhao Shuang Yuan Jinling Song Ying Wu Feng Feng Xiaoqing He Chengwei Zhang Wei Song Jiuran Zhao Jinxiao Yang | 2020 | Molecular Plant2020，13，1： | 8 |
| 3 | The chromosome-level Hemerocallis citrina Borani genome provides new insights into the rutin biosynthesis and the lack of colchicine显示文摘Hemerocallis citrina Borani(huang hua cai in Chinese)is an important horticultural crop whose flower buds are widely consumed as a delicious vegetable in Asia.Here we assembled a high-quality reference genome of H.citrina using single-molecule sequencing and Hi-C technologies.The genome assembly was 3.77 Gb and consisted of 3183 contigs with a contig N50 of 2.09 Mb,which were further clustered into 11 pseudochromosomes.A larger portion(3.25 Gb or 86.20%)was annotated as a repetitive content and 54,295 protein-coding genes were annotated in the genome.Genome evolution analysis showed that H.citrina experienced a recent whole-genome duplication(WGD)event at~15.73 million years ago(Mya),which was the main factor leading to many multiple copies of orthologous genes.We used this reference genome to predict 20 genes involved in the rutin biosynthesis pathway.Moreover,our metabolomics data revealed neither colchicine nor its precursors in H.citrina,challenging the long-standing belief that this alkaloid causes poisoning by the plant.The results of our disruptive research are further substantiated by our genomic finding that H.citrina does not contain any genes involved in colchicine biosynthesis.The high-quality genome lays a solid foundation for genetic research and molecular breeding of H.citrina. | Zhixing Qing Jinghong Liu Xinxin Yi Xiubin Liu Guoan Hu Jia Lao Wei He Zihui Yang Xiaoyan Zou Mengshan Sun Peng Huang Jianguo Zeng | 2021 | Horticulture Research2021，8，1： | 6 |
| 4 | A review of cadmium sorption mechanisms on soil mineral surfaces revealed from synchrotron-based X-ray absorption fine structure spectroscopy:Implications for soil remediation显示文摘The sorption of cadmium(Cd) is one of the most important chemical processes in soil, affecting its fate and mobility in both soil and water and ultimately controlling its bioavailability. In order to fundamentally understand the sorption/desorption of Cd in soil systems, X-ray absorption fine structure spectroscopy(XAFS) has been applied in numerous studies to provide molecular-level information that can be used to characterize the surface adsorption and precipitation reactions that Cd can undergo. This information greatly improves our current knowledge of the possible chemical reactions of Cd in soil. This paper critically reviews the mechanisms of Cd sorption/desorption at the mineral-water interface based on XAFS studies performed over the past twenty years. An introduction to the basic concepts of sorption processes is provided, followed by a detailed interpretation of XAFS theory and experimental data collection and processing,ending finally with a discussion of the atomic/molecular-scale Cd sorption mechanisms that occur at the soil mineral-water interface. Particular emphasis is placed on literature that discusses Cd adsorption and speciation when associated with iron, manganese, and aluminum oxides and aluminosilicate minerals.Multiple sorption mechanisms by which Cd is sorbed by these minerals have been found, spanning from outer-sphere to inner-sphere to surface precipitation,depending on mineral type, surface loading, and pH. In addition, the application of complementary techniques(e.g.,113 Cd nuclear magnetic resonance(NMR) and molecular dynamics simulation) for probing Cd sorption mechanisms is discussed. This review can help to develop appropriate strategies for the environmental remediation of Cd-contaminated soils. | Xinxin MO Matthew G.SIEBECKER Wenxian GOU Ling LI Wei LI | 2021 | Pedosphere2021，31，1： | 5 |
| 5 | Thermal Radiative Properties of Xonotlite Insulation Material显示文摘This paper presents experimental results of thermal radiative properties of xonotlite-type calcium silicate insulation material. Transmittance spectra were first taken using Fourier transform infrared spectrometer (FTIR) for the samples with ρ =234 kg/m3. Specific extinction coefficient spectra were then obtained by applying Beer’s law. Finally, by using the diffusion approximation, the specific Rossland mean extinction coefficients and radiative thermal conductivities were obtained for various temperatures. The results show that the specific spectral extinction coefficient of xonotlite is larger than 7 m2/kg in the whole measured spectra, and diffusion approximation equation is a reasonable description of radiative heat transfer in xonotlite insulation material. The specific Rossland mean extinction coefficient of xonotlite has a maximum value at 400 K and the radiative thermal conductivity is almost proportional to the cube of temperature. | Xinxin ZHANG Gaosheng WEI Fan YU | 2005 | Journal of Thermal Science2005，14，3： | 5 |
| 6 | Effective Thermal Conductivity Analysis of Xonotlite-aerogel Composite Insulation Material显示文摘A 3-dimensional unit cell model is developed for analyzing effective thermal conductivity of xonotlite-aerogelcomposite insulation material based on its microstructure features. Effective thermal conductivity comparisonsbetween xonotlite-type calcium silicate and aerogel as well as xonotlite-aerogel composite insulation material arepresented. It is shown that the density of xonotlite-type calcium silicate is the key factor affecting the effectivethermal conductivity of xonotlite-aerogel composite insulation material, and the density of aerogel has little influence.The effective thermal conductivity can be lowered greatly by composite of the two materials at an elevatedtemperature. | Gaosheng WEI Xinxin ZHANG Fan YU | 2009 | Journal of Thermal Science2009，18，2： | 5 |
| 7 | Metal-support interactions in designing noble metal-based catalysts for electrochemical CO_(2) reduction: Recent advances and future perspectives显示文摘Electrochemical CO_(2) reduction reaction (CO_(2) RR) offers a practical solution to current global greenhouse effect by converting excessive CO_(2) into value-added chemicals or fuels. Noble metal-based nanomaterials have been considered as efficient catalysts for the CO_(2) RR owing to their high catalytic activity, long-term stability and superior selectivity to targeted products. On the other hand, they are usually loaded on different support materials in order to minimize their usage and maximize the utilization because of high price and limited reserve. The strong metal-support interaction (MSI) between the metal and substrate plays an important role in affecting the CO_(2) RR performance. In this review, we mainly focus on different types of support materials (e.g., oxides, carbons, ligands, alloys and metal carbides) interacting with noble metal as electrocatalysts for CO_(2) RR. Moreover, the positive effects about MSI for boosting the CO_(2) RR performance via regulating the adsorption strength, electronic structure, coordination environment and binding energy are presented. Lastly, emerging challenges and future opportunities on noble metal electrocatalysts with strong MSI are discussed. | Zhao Li Rui Wu Lei Zhao Pingbo Li Xinxin Wei Junjie Wang Jun Song Chen Tierui Zhang | 2021 | Nano Research2021，14，11： | 4 |
| 8 | Novel application of bergapten and quercetin with anti-bacterial,osteogenesis-potentiating,and anti-inflammation tri-effects显示文摘The bacteria-mediated inflammatory conditions adversely affect the osseointegration process of endosseous implants,which can even lead to implant malfunction or failure.Local drug delivery has been designed to exert anti-inflammatory and antibacterial activities,but whether this strategy has an effect on the compromised osseointegration under inflammation has rarely been studied.The present study focused on the osteoinductive efficacy of two known phytoestrogens[bergapten(BP)and quercetin(QE)]on implant sites under multiple bacteria-infected conditions in situ.Furthermore,the gene expression profiles of rat bone mesenchymal stem cells(rBMSCs)treated with BP and QE in the presence of Porphyromonas gingivalis-derived lipopolysaccharide were identified.The results showed that both drugs,especially QE,had significant potentiating effects on promoting osteogenic differentiation of rBMSCs,resisting multiple pathogens,and reducing inflammatory activity.Meanwhile,RNA sequencing analysis highlighted the enriched gene ontology terms and the differentially expressed genes(Vps25,Il1r2,Csf3,Efemp1,and Ccl20)that might play essential roles in regulating the above tri-effects,which provided the basis for the drug delivery system to be used as a novel therapeutic strategy for integrating peri-implant health.Overall,our study confirmed that QE appeared to outperform BP in osteogenesis and bacterial killing but not in anti-inflammation.Moreover,both drugs possess favorable tri-effects and can serve as the pivotal agents for the drug delivery system to boost osseointegration at inflammatory implant sites. | Jianxu Wei Xiaomeng Zhang Yuan Li Xinxin Ding Yi Zhang Xue Jiang Hongchang Lai Junyu Shi | 2021 | Acta Biochimica et Biophysica Sinica2021，53，6： | 4 |
| 9 | Sphingosine-1-phosphate,a novel TREM2 ligand,promotes microglial phagocytosis to protect against ischemic brain injury显示文摘The mechanism of sphingosine-1-phosphate(S1P)-mediated phagocytosis remains unknown.Here,we found that S1P or FTY720(an analog of S1P)promoted microglial phagocytosis in stroke independent of S1PRs.First,we used computer simulation of molecular docking to predict that S1P might be a ligand for triggering receptor expressed on myeloid cells 2(TREM2).Next,microscale thermophoresis(MST),surface plasmon resonance(SPR)and liquid chromatography–tandem mass spectrometry(LC–MS/MS)were performed to reveal that S1P was a novel TREM2 ligand.Then,we confirmed the pro-phagocytosis of S1P targeting in Trem2-Dap12 transfected CHO cells and TREM2 knockdown microglia.Point mutation analysis showed that D104 was the critical binding residue.Trem2^(−/−)mice were used to demonstrate the role of S1P-induced phagocytosis targeting on TREM2 in protecting against ischemic brain injury.Finally,further studies revealed that apolipoprotein E(APOE)loaded with S1P was released by microglia and bound to apoptotic neurons via LDL receptor related protein 1B(LRP1B)and thereby induced microglia to phagocytose apoptotic neurons.Overall,the present work reveals for the first time that S1P acts as a novel endogenous ligand of TREM2 to effectively promote microglial phagocytosis.Our findings provide a new lead compound for developing immunomodulator targeting on TREM2. | Tengfei Xue Juan Ji Yuqin Sun Xinxin Huang Zhenyu Cai Jin Yang Wei Guo Ruobing Guo Hong Cheng Xiulan Sun | 2022 | Acta Pharmaceutica Sinica B2022，12，4： | 3 |
| 10 | Divergence, evolution and adaptation in ray-finned fish genomes显示文摘With the rapid development of next-generation sequencing technologies and bioinformatics, over 50 ray-finned fish genomes by far have been sequenced with high quality. The genomic work provides abundant genetic resources for deep understanding of divergence, evolution and adaptation in the fish genomes. They are also instructive for identification of candidate genes for functional verification, molecular breeding, and development of novel marine drugs. As an example of other omics data, the Fish-T1 K project generated a big database of fish transcriptomes to integrate with these published fish genomes for potential applications. In this review, we highlight the above-mentioned recent investigations and core topics on the ray-finned fish genome research, with a main goal to obtain a deeper understanding of fish biology for theoretical and practical applications. | Chao Bian Yu Huang Jia Li Xinxin You Yunhai Yi Wei Ge Qiong Shi | 2019 | Science China(Life Sciences)2019，62，8： | 3 |
| 11 | Diversity of Sex Types and Seasonal Sexual Plasticity in a Cucumber Germplasm Collection显示文摘The sex type of a cucumber plant is determined by the proportion of male, female and hermaphrodite flowers that it bears and is an important factor that affects fruit yield. In this paper, the sex types and seasonal sexual stabilities of 322 accessions of cucumber germplasm were identified. This germplasm collection displayed a great variety of sex types. We used an updated 10-type sex classification system based on the flower types present and the proportion of nodes with pistillate flowers(PNPF). The PNPF ranges of all the accessions were 2.12%–100% in spring and 0–100% in autumn. A total of 81.37% of the accessions had PNPFs of 10%–50% in spring, but most(84.78%) accessions were reduced to 0–20% PNPF in autumn. The range of reduction of PNPF from spring to autumn was 0–67.91%. In other words, most of the germplasm was normal monoecious(31.68%) or subandroecious(62.73%) in spring, but 94.10% of the accessions were subandroecious in autumn. According to the statistical evaluation of the difference in PNPFs between the two seasons, each accession could be classified into one of three groups: seasonally stable, seasonally sensitive and highly seasonally sensitive, accounting for 10.56%, 20.50% and 68.94% of the accessions, respectively. With a few exceptions, the seasonal PNPF differences were positively correlated with the PNPFs in a given season for most accessions. These results provided useful information and materials for sex expression mechanism research and for breeding cucumbers with high and stable yields. | DOU Xinxin SHEN Di ZHANG Xiaohui CHENG Jiaqi LI Sigeng SONG Jiangping WANG Haiping ZHANG Wei LI Xixiang | 2015 | Horticultural Plant Journal2015，1，2： | 3 |
| 12 | Numerical analysis of enhanced mixing in a Gallay tote blender显示文摘 | Xinxin Ren Guangzheng Zhou Ji xu Lijie Cui Wei Ge | 2016 | Particuology2016，14，6： | 3 |
| 13 | EasySVM: A visual analysis approach for open-box support vector machines显示文摘Support vector machines(SVMs) are supervised learning models traditionally employed for classification and regression analysis. In classification analysis, a set of training data is chosen, and each instance in the training data is assigned a categorical class. An SVM then constructs a model based on a separating plane that maximizes the margin between different classes. Despite being one of the most popular classification models because of its strong performance empirically, understanding the knowledge captured in an SVM remains difficult. SVMs are typically applied in a black-box manner where the details of parameter tuning, training, and even the final constructed model are hidden from the users. This is natural since these details are often complex and difficult to understand without proper visualization tools. However, such an approach often brings about various problems including trial-and-error tuning and suspicious users who are forced to trust these models blindly.The contribution of this paper is a visual analysis approach for building SVMs in an open-box manner.Our goal is to improve an analyst's understanding of the SVM modeling process through a suite of visualization techniques that allow users to have full interactive visual control over the entire SVM training process.Our visual exploration tools have been developed to enable intuitive parameter tuning, training datamanipulation, and rule extraction as part of the SVM training process. To demonstrate the efficacy of our approach, we conduct a case study using a real-world robot control dataset. | Yuxin Ma Wei Chen Xiaohong Ma Jiayi Xu Xinxin Huang Ross Maciejewski Anthony K.H.Tung | 2017 | Computational Visual Media2017，3，2： | 2 |
| 14 | Significant difference between sirolimus and paclitaxel nanoparticles in antiproliferation effect in normoxia and hypoxia: The basis of better selection of atherosclerosis treatment显示文摘Compared with paclitaxel,sirolimus has been more used in the treatment of vascular restenosis gradually as an anti-proliferative drug,but few basic studies have elucidated its mechanism.The anti-proliferative effects of sirolimus or paclitaxel have been demonstrated by numerous studies under normoxia,but few studies have been achieved focusing hypoxia.In this study,porcine carotid artery injury model and classical cobalt chloride hypoxia cell model were established.Sirolimus nanoparticles(SRM-NPs),paclitaxel nanoparticles(PTX-NPs)and blank nanoparticles(Blank-NPs)were prepared respectively.The effect of RPM-NPs on the degree of stenosis,proliferative index and the expression of PCNA after 28 days of porcine carotid artery injury model was evaluated.Compared with saline group and SRM groups,SRM-NPs group suppressed vascular stenosis,proliferative index and the expression of PCNA(P<0.01 and P<0.05).Endothelial cell(EC)and smooth muscle cell(SMC)were pre-treated with cobaltous chloride,followed by SRM-NPs,PTX-NPs,Blank-NPs or PBS control treating,the effects on cell proliferation,HIF-1 expression and glycolysis were detected.SRM-NPs could inhibit EC and SMC proliferation under hypoxia,while PTX-NPs couldn't(P<0.001).Significant differences between sirolimus and paclitaxel NPs in anti-proliferation effect under normoxia and hypoxia may due to the different inhibitory effects on HIF-1αexpression and glycolysis.In conclusion,these results suggest that sirolimus can inhibit the proliferation of hypoxic cells more effectively than paclitaxel.These observations may provide a basis for understanding clinical vascular stenosis therapeutic differences between rapamycin and paclitaxel. | Youlu Chen Yong Zeng Xiaowei Zhu Lifu Miao Xiaoyu Liang Jianwei Duan Huiyang Li Xinxin Tian Liyun Pang Yongxiang Wei Jing Yang | 2021 | Bioactive Materials2021，6，3： | 2 |
| 15 | Human embryonic stem cells contribute to embryonic and extraembryonic lineages in mouse embryos upon inhibition of apoptosis显示文摘 | Wei Li Baoyang Hu XuepengWang Tianda Li Tongtong Cui Dawei Yu Chao Liu Liyuan Jiang Guihai Feng Lei wang Rui Fu Xinxin Zhang Jie Hao Yukai Wang Liu Wang Qi Zhou | 2018 | Cell Research2018，28，1： | 2 |
| 16 | Numerical investigation of airborne transmission of respiratory infections on the subway platform显示文摘Underground subway platforms are among the world’s busiest public transportation systems,but the airborne transmission mechanism of respiratory infections on these platforms has been rarely studied.Here,computational fluid dynamics(CFD)modeling is used to investigate the airflow patterns and infection risks in an island platform under two common ventilation modes:Mode 1-both sides have air inlets and outlets;Mode 2-air inlets are present at the two sides and outlets are present in the middle.Under the investigated scenario,airflow structure is characterized by the ventilation jet and human thermal plumes.Their interaction with the infector’s breathing jet imposes the front passenger under the highest exposure risk by short-range airborne route,with intake fractions up to 2.57%(oral breathing)or 0.63%(nasal breathing)under Mode 1;oral breathing of the infector may impose higher risks for the front passenger compared with nasal breathing.Pathogen are efficiently diluted as they travel further,in particular to adjacent crowds.The maximum and median value of intake fractions of passengers in adjacent crowds are respectively 0.093%and 0.016%(oral breathing),and 0.073%and 0.014%(nasal breathing)under Mode 1.Compared with Mode 1,the 2nd mode minimizes the interaction of ventilation jet and breathing jet,where the maximum intake fraction is only 0.34%,and the median value in the same crowd and other crowds are reduced by 23–63%.Combining published quanta generation rate data of COVID-19 and influenza infectors,the predicted maximum and median infection risks for passengers in the same crowds are respectively 1.46%–40.23%and 0.038%–1.67%during the 3–10 min waiting period,which are more sensitive to ventilation rate and exposure time compared with return air.This study can provide practical guidance for the prevention of respiratory infections in subway platforms. | Jianjian Wei Sirui Zhu Feiwu He Qianfang Guo Xinxin Huang Jianxiang Yu Lirong Zou Tao Jin Jie Wu | 2022 | Geoscience Frontiers2022，13，6： | 2 |
| 17 | Thermal conductivity measurements on xonotlite-type calcium silicate by the transient hot-strip method显示文摘The experimental results of the thermal conductivities of xonotlite-type calcium silicate insulation materials were pre-sented at different temperatures and pressures. Two appropriative surroundings, i.e. an elevated temperature surrounding from ambi-ent temperature to 1450 K and a vacuum surrounding from atmosphere pressure to 10-3 Pa, were designed for the transient hot-strip (THS) method. The thermal conductivities of xonotlite-type calcium silicate with four densities from ambient temperature to 1000 K and 0.045 Pa to atmospheric pressure were measured. The results show that the thermal conductivity of xonotlite-type calcium sili-cate decreases apparently with the fall of density, and decreases apparently with the drop of pressure, and reaches the least value at about 100 Pa. The thermal conductivity of xonotlite-type calcium silicate increases almost linearly with T3, and increases more abundantly with low density than with high density. The thermal conductivity measurement uncertainty is estimated to be approxi-mately 3% at ambient temperature, and 6% at 800 K. | Gaosheng Wei Xinxin Zhang Fan Yu | 2008 | Journal of University of Science and Technology Beijing2008，15，6： | 2 |
| 18 | Thermal conductivities study on silica aerogel and its composite insulation materials显示文摘 | Gaosheng Wei Yusong Liu Xinxin Zhang Fan Yu Xiaoze Du | 2011 | International Journal of Heat and Mass Transfer2011，，11： | 2 |
| 19 | The impact of the atmospheric turbulence-development tendency on new particle formation:a common finding on three continents显示文摘A new mechanism of new particle formation(NPF)is investigated using comprehensive measurements of aerosol physicochemical quantities and meteorological variables made in three continents,including Beijing,China;the Southern Great Plains site in the USA;and SMEARⅡStation in Hyytiala,Finland.D espite the considerably different emissions of chemical species among the sites,a common relationship was found between the characteristics of NPF and the stability intensity.The stability parameter(ζ=Z/L,where Z is the height above ground and L is the Monin-Obukhov length)is found to play an important role;it drops significantly before NPF as the atmosphere becomes more unstable,which may serve as an indicator of nucleation bursts.As the atmosphere becomes unstable,the NPF duration is closely related to the tendency for turbulence development,which influences the evolution of the condensation sink.Presumably,the unstable atmosphere may dilute pre-existing particles,effectively reducing the condensation sink,especially at coarse mode to foster nucleation.This new mechanism is confirmed by model simulations using a molecular dynamic model that mimics the impact of turbulence development on nucleation by inducing and intensifying homogeneous nucleation events. | Hao Wu Zhanqing Li Hanqing Li Kun Luo Yuying Wang Peng Yan Fei Hu Fang Zhang Yele Sun Dongjie Shang Chunsheng Liang Dongmei Zhang Jing Wei Tong Wu Xiaoai Jin Xinxin Fan Maureen Cribb Marc L.Fischer Markku Kulmala Tuukka Petaja | 2021 | National Science Review2021，8，3： | 2 |
| 20 | bZIP71 delays flowering by suppressing Ehd1 expression in rice显示文摘Flowering time is a fundamental factor determining the global distribution and final yield of rice(Oryza sativa).Although diverse flowering time genes have been reported in this crop,the transcriptional regulation of its key flowering genes are poorly understood.Here,we report that a basic leucine zipper transcription factor,bZIP71,functions as a flowering repressor.The overexpression of bZIP71 delays flowering,while the bzip71 mutant flowers early in both long-day and short-day conditions.A genetic analysis showed that the regulation of flowering by bZIP71 might be independent of Heading date 2(Hd2),Hd4,and Hd5.Importantly,bZIP71 directly associates with the Early heading date 1(Ehd1)promoter and represses its transcription,and genetically the function of bZIP71 is impaired in the ehd1 mutant.Moreover,bZIP71 interacts with major components of polycomb repressive complex 2(PRC2),SET domain group protein 711(SDG711),and Fertilization independent endosperm 2(FIE2),through which bZIP71 regulates the H3K27me3 level of Ehd1.Taken together,we present a transcriptional regulatory mechanism in which bZIP71 enhances the H3K27me3 level of Ehd1 and transcriptionally represses its expression,which not only offers a novel insight into a flowering pathway,but also provides a valuable putative target for the genetic engineering and breeding of elite rice cultivars. | Xiufeng Li Xiaojie Tian Mingliang He Xinxin Liu Zhiyong Li Jiaqi Tang Enyang Mei Min Xu Yingxiang Liu Zhenyu Wang Qingjie Guan Wei Meng Jun Fang Jian Zhang Qingyun Bu | 2022 | Journal of Integrative Plant Biology2022，64，7： | 2 |
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