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| 1 | Root microbiota shift in rice correlates with resident time in the field and developmental stage显示文摘Land plants in natural soil form intimate relationships with the diverse root bacterial microbiota. A growing body of evidence shows that these microbes are important for plant growth and health. Root microbiota composition has been widely studied in several model plants and crops; however, little is known about how root microbiota vary throughout the plant's life cycle under field conditions. We performed longitudinal dense sampling in field trials to track the time-series shift of the root microbiota from two representative rice cultivars in two separate locations in China. We found that the rice root microbiota varied dramatically during the vegetative stages and stabilized from the beginning of the reproductive stage, after which the root microbiota underwent relatively minor changes until rice ripening. Notably, both rice genotype and geographical location influenced the patterns of root microbiota shift that occurred during plant growth. The relative abundance of Deltaproteobacteria in roots significantly increased overtime throughout the entire life cycle of rice, while that of Betaproteobacteria, Firmicutes, and Gammaproteobacteria decreased. By a machine learning approach, we identified biomarker taxa and established a model to correlate root microbiota with rice resident time in the field(e.g., Nitrospira accumulated from 5 weeks/tillering in field-grown rice). Our work provides insights into the process of rice root microbiota establishment. | Jingying Zhang Na Zhang Yong-Xin Liu Xiaoning Zhang Bin Hu Yuan Qin Haoran Xu Hui Wang Xiaoxuan Guo Jingmei Qian Wei Wang Pengfan Zhang Tao Jin Chengcai Chu Yang Bai | 2018 | Science China(Life Sciences)2018，61，6： | 24 |
| 2 | The root microbiome:Community assembly and its contributions to plant fitness显示文摘The root microbiome refers to the community of microbes living in association with a plant's roots,and includes mutualists,pathogens,and commensals.Here we focus on recent advances in the study of root commensal community which is the major research object of microbiomerelated researches.With the rapid development of new technologies,plant-commensal interactions can be explored with unprecedented breadth and depth.Both the soil environment and the host plant drive commensal community assembly.The bulk soil is the seed bank of potential commensals,and plants use root exudates and immune responses to build healthy microbial communities from the available microbes.The plant microbiome extends the functional system of plants by participating in a variety of processes,including nutrient absorption,growth promotion,and resistance to biotic and abiotic stresses.Plants and their microbiomes have evolved adaptation strategies over time.However,there is still a huge gap in our understanding of the regulatory mechanisms of plant-commensal interactions.In this review,we summarize recent research on the assembly of root microbial communities and the effects of these communities on plant growth and development,and look at the prospects for promoting sustainable agricultural development through the study of the root microbiome. | Bo Bai Weidong Liu Xingyu Qiu Jie Zhang Jingying Zhang Yang Bai | 2022 | Journal of Integrative Plant Biology2022，64，2： | 13 |
| 3 | Host-Associated Quantitative Abundance Profiling Reveals the Microbial Load Variation of Root Microbiome显示文摘Plant-associated microbes are critical for plant growth and survival under natural environmental conditions.To date,most plant microbiome studies involving high-throughput amplicon sequencing have focused on the relative abundance of microbial taxa.However,this technique does not assess the total microbial load and the abundance of individual microbes relative to the amount of host plant tissues.Here,we report the development of a host-associated quantitative abundance profiling(HA-QAP)method that can accurately examine total microbial load and colonization of individual root microbiome members relative to host plants by the copy-number ratio of microbial marker gene to plant genome.We validate the HAQAP method using mock experiments,perturbation experiments,and metagenomic sequencing.The HA-QAP method eliminates the generation of spurious outputs in the classical method based on microbial relative abundance,and reveals the load of root microbiome to host plants.Using the HA-QAP method,we found that the copy-number ratios of microbial marker genes to plant genome range from 1.07 to 6.61 for bacterial 16S rRNA genes and from 0.40 to 2.26 for fungal internal transcribed spacers in the root microbiome samples from healthy rice and wheat.Furthermore,using HA-QAP we found that an increase in total microbial load represents a key feature of changes in root microbiome of rice plants exposed to drought stress and of wheat plants with root rot disease,which significantly influences patterns of differential taxa and species interaction networks.Given its accuracy and technical feasibility,HA-QAP would facilitate our understanding of genuine interactions between root microbiome and plants. | Xiaoxuan Guo Xiaoning Zhang Yuan Qin Yong-Xin Liu Jingying Zhang Na Zhang Kun Wu Baoyuan Qu Zishan He Xin Wang Xinjian Zhang Stephane Hacquard Xiangdong Fu Yang Bai | 2020 | Plant Communications2020，1，1： | 3 |
| 4 | The rice histone methylation regulates hub species of the root microbiota显示文摘Plants have a close relationship with their root microbiota,which comprises a complex microbial network.Histone methylation is an important epigenetic modification influencing multiple plant traits;however,little is known about the role of plant histone methylation in the assembly and network structure of the root microbiota.In this study,we established that the rice(Oryza sativa)histone methylation regulates the structure and composition of the root microbiota,especially the hub species in the microbial network.DJjmj703(defective in histone H3K4 demethylation)and ZH11-sdg714(defective in H3K9 methylation)showed significant different root microbiota compared with the corresponding wild types at the phylum and family levels,with a consistent increase in the abundance of Betaproteobacteria and a decrease in the Firmicutes.In the root microbial network,35 of 44 hub species in the top 10 modules in the tested field were regulated by at least one histone methylation-related gene.These observations establish that the rice histone methylation plays a pivotal role in regulating the assembly of the root microbiota,providing insights into the links between plant epigenetic regulation and root microbiota. | Zhiyao Lv Rui Dai Haoran Xu Yongxin Liu Bo Bai Ying Meng Haiyan Li Xiaofeng Cao Yang Bai Xianwei Song Jingying Zhang | 2021 | Journal of Genetics and Genomics2021，48，9： | 1 |
| 5 | Life cycle assessment of HFC-134a production by calcium carbide acetylene route in China显示文摘HFC-134a is a widely used environment-friendly refrigerant.At present,China is the largest producer of HFC-134a in the world.The production of HFC-134a in China mainly adopts the calcium carbide acetylene route.However,the production route has high resource and energy consumption and large waste emission,and few of the studies addressed on the environmental performance of its production process.This study quantified the environmental performance of HFC-134a production by calcium carbide route via carrying out a life cycle assessment(LCA)using the CML 2001 method.And uncertainty analysis by Monte-Carlo simulation was also carried out.The results showed that electricity had the most impact on the environment,followed by steam,hydrogen fluoride and chlorine,and the impact of direct CO_(2) emissions in calcium carbide production stage on the global warming effect also could not be ignored.Therefore,the clean energy(e.g.,wind,solar,biomass,and natural gas)was used to replace coal-based electricity and coal-fired steam in this study,showing considerable environmental benefits.At the same time,the use of advanced production technologies could also improve environmental benefits,and the environmental impact of the global warming category could be reduced by 4.1%via using CO_(2) capture and purification technology.The Chinese database of HFC-134a production established in this study provides convenience for the relevant study of scholars.For the production of HFC-134a,this study helps to better identify the specific environmental hotspots and proposes useful ways to improve the environmental benefits. | Suisui Zhang Jingying Li Yan Nie Luyao Qiang Boyang Bai Zhiwei Peng Xiaoxun Ma | 2022 | Chinese Journal of Chemical Engineering2022，35，2： | 1 |
| 6 | Surface Modification with Carbon Fiber for the Metallization of Polyether-ether-ketone显示文摘The poly-ether-ether-ketone(PEEK)polymer is a semi-crystalline aromatic thermoplastic with outstanding features,such as superior mechanical properties,thermal stability,radiation resistance and excellent chemical and hydrolysis resistance.However,PEEK exhibits a high volume resistivity(1014Ω·m)and surface resistance(1015Ω).This limits its use in the electronics and electromagnetic field.To decrease the resistivity and reduce the thermal expansion of composite materials,this paper modified the PEEK with carbon fiber(CF)and metalized the composites with the electroless Ni-P alloy plating through self-catalyzed deposition,which brings about high conductivity,thermal conductivity,high-temperature weldability resistance and high-low temperature resistance property.The composites and metal coatings were characterized by metallurgical microscope,SEM,and resistance tester.The metal coatings have a uniform surface and low surface resistance less than 10 mΩ~20 mΩ.The thermal shock test at 250°C and the-70°C^100°C high-low temperature environment test were measured.Compared with the electroless plating on unmodified peek,there is no bump and crack,etc.after testing,which shows a good adhesion between the metal coatings and PEEK-CF,high-low temperature resistance as well as high temperature weldability.The researches on the modification of PEEK by carbon fiber and its surface metallization provide technical support for the application of PEEK Composites in radar antenna and other electronic fields. | LI Jiafeng WANG Nan WANG Xuguang TONG Xiaobo BAI Jingying ZHANG Ligong | 2020 | 纤维复合材料2020，37，3： | 0 |
| 7 | Achieving Excellent Electromagnetic Interference Shielding Effectiveness in High Rare Earth Mg-12Gd-3Y alloy via Nd Addition Combined with Hot Rolling and Aging显示文摘Achieving excellent electromagnetic interference(EMI)shielding effectiveness(SE)in high rare earth(RE)-content Mg alloys is currently a significant technical challenge.This work systematically investigated the effects of different Nd elements on the electrical conductivity and EMI SE of Mg-12Gd-3Y-xNd alloy by adding Nd elements to the high RE content Mg-12Gd-3Y alloy,followed by a combined process of hot rolling and aging(R-A).The results indicate that the addition of Nd elements leads to reduced solid solubility of Gd and Y,resulting in a large amount of precipitation.The Mg-12Gd-3Y-2.0Nd alloy has the optimum EMI SE after 63%R-A treatment,reaching 88-118 dB at 30-1500 MHz.The Mg-12Gd-3Y-xNd alloy has acicular and granular forms of the Mg5(Gd,Y,Nd)(abbreviated as Mg5RE)phase after R-A treatment.The granular Mg5RE phase gradually breaks up and refines into more minor scales with increasing rolling reduction and is diffusely distributed in the matrix.The acicular Mg5RE phase is densely arranged,with cross-distribution in some areas.The cross-distributed acicular Mg5RE phase,the delicate granular Mg5RE phase,and the denseβ′phase provide more interfaces for reflecting electromagnetic waves and increase the multiple reflection loss of incident electromagnetic waves.In addition,the Mg-12Gd-3Y-xNd alloy deflects most of the c-axis of the grains parallel to the normal direction(ND)as the rolling reduction increases,making the impedance difference between the plate surface and air larger.The increased impedance makes the material reflect more loss to incident electromagnetic waves.The combined use of these two leads to an excellent EMI SE of Mg-12Gd-3Y-xNd with high RE content after R-A treatment. | Wenlong Xu Chang Su Yuan Yuan Jingying Bai Xianhua Chen | 2023 | Acta Metallurgica Sinica(English Letters)2023，36，10： | 0 |
| 8 | Life cycle assessment and economic analysis of HFC-134a production from natural gas compared with oil-based and coal-based production显示文摘China is the largest producer and consumer of HFC-134a(1,1,1,2-tetrafluoroethane)in the world.Coal-based route is mainly adopted to produce HFC-134a,which suffers from large waste and CO_(2) emissions.Natural gas is a low-carbon and clean energy resource,and no research has been found on the environment and economy of producing HFC-134a from natural gas.In this study,CML 2001 method was used to carry out the life cycle assessment of natural gas(partial oxidation)-based and natural gas(plasma cracking)-based routes(abbreviated as gas(O)-based and gas(P)-based routes,respectively),and their environmental performances were compared with coal-based and oil-based routes.Meanwhile,considering that China is vigorously promoting the transformation of energy structure,and the application of electric heating equipment to replace fossil-based heating equipment in industrial field,which has a great impact on the environmental performance of the production processes,the authors conducted a scenario analysis.The results showed that the gas(O)-based route had the most favourable environmental benefits.However,the gas(P)-based route had the highest potential for reducing environmental burdens,and its environmental benefit was the most favourable in scenario 2050.Additionally,the economic performance of the gas(P)-based route was significantly better than that of gas(O)-based and coal-based routes. | Suisui Zhang Gang Li Boyang Bai Luyao Qiang Xiaoxun Ma Jingying Li | 2022 | Frontiers of Chemical Science and Engineering2022，16，12： | 0 |
| 9 | Improved Corrosion Resistance of Ultrafine-Grained Mg-Gd-Zr Alloy Fabricated by Surface Friction Treatment显示文摘Gradient ultrafine-grained (UFG) Mg-2Gd-0.4Zr (wt%) alloy sheet, with a UFG layer of about 118 nm on the topmost treated surface, was fabricated by sliding friction treatment (SFT). The corrosion resistance of the SFT-processed UFG surface layer was greatly improved compared to the original coarse-grained (CG) structure, representing as a higher impedance and a lower corrosion rate (CG: 4.11 mm y^(−1), UFG: 2.71 mm y^(−1)). The UFG layer with high density of grain boundaries exhibits an excellent impeditive effect on the cracking of corrosion product films. Compared to the CG sample, the stable corrosion product film inhibits the formation of pitting so providing a better protective effect. In addition, the Gd-rich clusters are randomly distributed after SFT processing, which decreases the tendency of galvanic corrosion on the UFG surface. | Chunquan Liu Xianhua Chen Yulong Wu Yaobo Hu Wei Zhang Yusheng Zhang Jingying Bai Fusheng Pan | 2023 | Acta Metallurgica Sinica(English Letters)2023，36，8： | 0 |
| 10 | Applications of magnesium alloys for aerospace:A review显示文摘With the increasingly excellent performance of magnesium alloy materials, magnesium alloys are increasingly widely used under the urgent need for weight reduction in aerospace applications. However, due to the severe aviation environment, the strength, corrosion resistance and electrical conductivity of magnesium alloy materials need to be further improved. Many scholars are committed to studying higher comprehensive mechanical properties. Besides, they have studied surface treatment processes with space application characteristics, such as high emissivity oxidation and high anti-corrosion electroplating. To further improve the safety and reliability of magnesium alloys and expand their applications, this paper discusses several kinds of magnesium alloys and summarizes their research progress. The whole manuscript should be revised by an expert who has more experience on English writing. At the same time, the surface treatments of magnesium alloy materials for aerospace are analyzed. Besides, the application of magnesium alloy in aerospace field is summarized. With the in-depth research of many scholars, the improvement of material properties and the development of surface protection and functional technology, it is believed that magnesium alloys will be used in more and more aerospace applications and make more contributions to the aerospace field. | Jingying Bai Yan Yang Chen Wen Jing Chen Gang Zhou Bin Jiang Xiaodong Peng Fusheng Pan | 2023 | Journal of Magnesium and Alloys2023，11，10： | 0 |
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