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Nonvolatile and reconfigurable two-terminal electro-optic duplex memristor based on III-nitride semiconductors

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Light(Science & Applications) 2024年第4期13卷 706-716页

作者： Zhiwei Xie Ke Jiang Shanli Zhang Jianwei Ben Mingrui Liu Shunpeng Lv Yang Chen Yuping Jia Xiaojuan Sun Dabing Li State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesDongnanhu Road No.3888Changchun 130033China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesYuquan Road No.19100049 BeijingChina These authors contributed equally:Zhiwei XieKe Jiang

With the fast development of artificial intelligence(AI),Internet of things(IOT),etc,there is an urgent need for the technology that can efficiently recognize,store and process a staggering amount of information.The AlScN material has unique advantages including immense remnant polarization,superior temperature stability and good latticematch to other III-nitrides,making it easy to integrate with the existing advanced III-nitrides material and device technologies.However,due to the large band-gap,strong coercive field,and low photo-generated carrier generation and separation efficiency,it is difficult for AlScN itself to accumulate enough photo-generated carriers at the surface/interface to induce polarization inversion,limiting its application in in-memory sensing and computing.In this work,an electro-optic duplex memristor on a GaN/AlScN hetero-structure based Schottky diode has been realized.This twoterminal memristor shows good electrical and opto-electrical nonvolatility and reconfigurability.For both electrical and opto-electrical modes,the current on/off ratio can reach the magnitude of 104,and the resistance states can be effectively reset,written and long-termly stored.Based on this device,the“IMP”truth table and the logic“False”can be successfully reproduced,indicating the huge potential of the device in the field of in-memory sensing and computing.

关键词： polarization duplex limiting

A New Year’s spotlight on two years of publication

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Plant Communications 2022年第1期3卷 1-5页

作者： Wenjia Wang Lexuan Gao Xiaofeng Cui Editors Plant Communications these authors contributed equally to this article

With this first issue of 2022,Plant Communications enters its third year.Over the past 2 years,the activities of plant researchers worldwide have been affected by the COVID-19 pandemic,which has hindered the progress of many ongoing plant science projects.Although the pandemic is not yet over and we currently face many other grand challenges,such as climate change,we have witnessed the global scientific community working boldly together to find solutions for ending the COVID-19 pandemic and tackling other challenges.Climate change threatens global food security and sustainable development.

关键词： hough global light

MEF13 Requires MORF3 and MORF8 for RNA Editing at Eight Targets in Mitochondrial mRNAs in Arabidopsis thaliana

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Molecular Plant 2015年第10期8卷 1466-1477页

作者： Franziska Glass Barbara Hartel Anja Zehrmann Daniil Verbitskiy Mizuki Takenaka Molekulare Botanik Universitat UIm 89069 UIm Germany these authors contributed equally to this article.

RNA editing sites in plant mitochondria and plastids are addressed by pentatricopeptide repeat （PPR） proteins with E or E and DYW domains, which recognize a specific nucleotide motif upstream of the edited nucleotide. In addition, some sites require MORF proteins for efficient RNA editing. Here, we assign the novel E domain-containing PPR protein, MEF13, as being required for editing at eight sites in Arabidopsis thaliana. A SNP in ecotype C24 altering the editing level at only one of the eight target sites was located by genomic mapping. An EMS mutant allele of the gene for MEF13 was identified in a SNaPshot screen of a mutated plant population. At all eight target sites of MEF13, editing levels are reduced in both morf3 and morf8 mutants, but at only one site in morfl mutants, suggesting that specific MEF13-MORF interactions are required. Yeast two-hybrid analyses detect solid connections of MEF13 with MORF1 and weak contact with MORF3 proteins. Yeast three-hybrid （Y3H） analysis shows that the presence of MORF8 enhances the connection between MEF13 and MORF3, suggesting that a MORF3-MORF8 heteromer may form stably or transiently to establish interaction with MEF13.

关键词： RNA editing plant mitochondria PPR protein MEF13 MEF-MORF interaction

Spectral absorption control of femtosecond laser-treated metals and application in solar-thermal devices

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Light(Science & Applications) 2020年第1期9卷 1851-1859页

作者： Sohail A.Jalil Bo Lai Mohamed ElKabbash Jihua Zhang Erik M.Garcell Subhash Singh Chunlei Guo The Institute of Optics University of RochesterRochesterNY 14627USA These authors contributed equally:Sohail A.JalilBo Lai

Direct femtosecond(fs)laser processing is a maskless fabrication technique that can effectively modify the optical,electrical,mechanical,and tribological properties of materials for a wide range of potential applications.However,the eventual implementation of fs-laser-treated surfaces in actual devices remains challenging because it is difficult to precisely control the surface properties.Previous studies of the morphological control of fs-laser-processed surfaces mostly focused on enhancing the uniformity of periodic microstructures.Here,guided by the plasmon hybridisation model,we control the morphology of surface nanostructures to obtain more control over spectral light absorption.We experimentally demonstrate spectral control of a variety of metals[copper(Cu),aluminium(Al),steel and tungsten(W)],resulting in the creation of broadband light absorbers and selective solar absorbers(SSAs).For the first time,we demonstrate that fs-laser-produced surfaces can be used as high-temperature SSAs.We show that a tungsten selective solar absorber(W-SSA)exhibits excellent performance as a high-temperature solar receiver.When integrated into a solar thermoelectric generation(TEG)device,W-SSA provides a 130%increase in solar TEG efficiency compared to untreated W,which is commonly used as an intrinsic selective light absorber.

关键词： steel absorber metals

Activation tagging identifies WRKY14 as a repressor of plant thermomorphogenesis in Arabidopsis

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Molecular Plant 2022年第11期15卷 1725-1743页

作者： Wenqi Qin Ning Wang Qi Yin Huiling Li Ai-Min Wu Genji Qin State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources South China Agricultural UniversityGuangzhou 510642China State Key Laboratory of Protein and Plant Gene Research School of Life SciencesPeking UniversityBeijing 100871People’s Republic of China these authors contributed equally to this article.Affiliations

Increases in recorded high temperatures around the world are causing plant thermomorphogenesis and decreasing crop productivity.PHYTOCHROME INTERACTING FACTOR 4(PIF4)is a central positive regulator of plant thermomorphogenesis.However,the molecular mechanisms underlying PIF4-regulated thermomorphogenesis remain largely unclear.In this study,we identified ABNORMAL THERMOMORPHOGENESIS 1(ABT1)as an important negative regulator of PIF4 and plant thermomorphogenesis.Overexpression of ABT1 in the activation tagging mutant abt1-D caused shorter hypocotyls and petioles under moderately high temperature(HT).ABT1 encodes WRKY14,which belongs to subgroup II of the WRKY transcription factors.Overexpression of ABT1/WRKY14 or its close homologs,including ABT2/WRKY35,ABT3/WRKY65,and ABT4/WRKY69in transgenic plants caused insensitivity to HT,whereas the quadruple mutant abt1 abt2 abt3 abt4 exhibited greater sensitivity to HT.ABTs were expressed in hypocotyls,cotyledons,shoot apical meristems,and leaves,but their expression were suppressed by HT.Biochemical assays showed that ABT1 can interact with TCP5,a known positive regulator of PIF4,and interrupt the formation of the TCP5-PIF4 complex and repress its transcriptional activation activity.Genetic analysis showed that ABT1 functioned antagonistically with TCP5,BZR1,and PIF4 in plant thermomorphogenesis.Taken together,our results identify ABT1/WRKY14 as a critical repressor of plant thermomorphogenesis and suggest that ABT1/WRKY14,TCP5,and PIF4 may form a sophisticated regulatory module to fine-tune PIF4 activity and temperature-dependent plant growth.

关键词： plant thermomorphogenesis WRKY transcription factor TCP transcription factor ABT1 PIF4

Interleukin-1 beta induces the expression and production of stem cell factor by epithelial cells： crucial involvement of the PI-3K/mTOR pathway and HIF-1 transcription complex

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Cellular & Molecular Immunology 2016年第1期13卷 47-56页

作者： Rafal W Wyszynski Bernhard F Gibbs Luca Varani Daniela Iannotta Vadim V Sumbayev School of Pharmacy University of Kent Kent UK Institute for Research in Biomedicine Bellinzona Switzerland These authors are contributed equally to this study

Potential crosslinks between inflammation and leukaemia have been discussed for some time, but experimental evidence to support this dogma is scarce. In particular, it is important to understand the mechanisms responsible for potential upregulation of proto-oncogenic growth factor expressions by inflammatory mediators. Here, we investigated the ability of the highly inflammatory cytokine interleukin-1 beta （IL-1β） to induce the production of stem cell factor （SCF）, which is a major hematopoietic growth factor that controls the progression of acute myeloid leukaemia upon malignant transformation of haematopoietic myeloid cells. We found that human IL-1β induced the expression/secretion of SCF in MCF-7 human epithelial breast cancer cells and that this process depended on the hypoxia-inducible factor 1 （HIF-1） transcription complex. We also demonstrated a crucial role of the phosphatidylinositol-3 kinase （PI-3K）/mammalian target of rapamycin （mTOR） pathway in IL-1β-induced HIF-1α accumulation in MCF-7 cells. Importantly, mTOR was also found to play a role in IL-1β-induced SCF production. Furthermore, a tendency for a positive correlation of IL-1β and SCF levels in the plasma of healthy human donors was observed. Altogether, our results demonstrate that IL-1β, which normally bridges innate and adaptive immunity, induces the production of the major haematopoietic/proleukaemic growth factor SCF through the PI-3K/mTOR pathway and the HIF-1 transcription complex. These findings strongly suoDort a cross-talk between inflammation and acute mveloid leukaemia.

关键词： Inflammation Stem cell factor Leukaemia Hypoxia

Distant eQTLs and Non-coding Sequences Play Critical Roles in Regulating Gene Expression and Quantitative Trait Variation in Maize

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Molecular Plant 2017年第3期10卷 414-426页

作者： Haijun Liu Xin Luo Luyao Niu Yingjie Xiao Lu Chen Jie Liu Xiaqing Wang Minliang Jin Wenqiang Li Qinghua Zhang Jianbing Yan National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 China these authors contributed equally to this article

A detailed understanding of genetic architecture of mRNA expression by millions of genetic variants is important for studying quantitative trait variation. In this study, we identified 1.25M SNPs with a minor allele frequency greater than 0.05 by combining reduced genome sequencing （GBS）, high- density array technologies （600K）, and previous deep RNA-sequencing data from 368 diverse inbred lines of maize. The balanced allelic frequencies and distributions in a relatively large and diverse natural panel helped to identify expression quantitative trait loci （eQTLs） associated with more than 18 000 genes （63.4% of tested genes）. We found that distant eQTLs were more frequent （~75% of all eQTLs） across the whole genome. Thirteen novel associated loci affecting maize kernel oil concentration were identified using the new dataset, among which one intergenic locus affected the kernel oil variation by controlling expression of three other known oil-related genes. Altogether, this study provides resources for expanding our understanding of cellular regulatory mechanisms of transcriptome variation and the landscape of functional variants within the maize genome, thereby enhancing the understanding of quantitative variations.

关键词： eQTL RNA-seq GBS GWAS non-coding regulation Zea mays

Insights into the evolution and spatial chromosome architecture of jujube from an updated gapless genome assembly

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Plant Communications 2023年第6期4卷 221-224页

作者： Meng Yang Lu Han Shufeng Zhang Li Dai Bin Li Shoukun Han Jin Zhao Ping Liu Zhihui Zhao Mengjun Liu College of Horticulture Hebei Agricultural UniversityBaodingHebei 071001China Research Center of Chinese Jujube Hebei Agricultural UniversityBaodingHebei 071001China College of Life Sciences Hebei Agricultural UniversityBaodingHebei 071001China these authors contributed equally to this article.

Dear Editor,Jujube(Ziziphus jujuba Mill.),commonly called Chinese jujube,is a vital member of the Rhamnaceae family.It is famous for its tolerance to dry,barren,and saline-alkali soils,and its fruit has important nutritional and medicinal value.Recent fundamental research on jujube has involved assembly of draft genome sequences for the fresh-eating cultivar‘Dongzao’(Liu et al.,2014),dry-eating cultivar‘Junzao’(Huang et al.,2016),and wild sour jujube‘Suanzao’(Shen et al.,2021).

关键词： Mill jujube cultivar

Testicular defense systems： immune privilege and innate immunity

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Cellular & Molecular Immunology 2014年第5期11卷 428-437页

作者： Shutao Zhao Weiwei Zhu Shepu Xue Daishu Han these authors contributed equally to the work Department of Cell Biology Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China

The mammalian testis possesses a special immunological environment because of its properties of remarkable immune privilege and effective local innate immunity. Testicular immune privilege protects immunogenic germ cells from systemic immune attack, and local innate immunity is important in preventing testicular microbial infections. The breakdown of local testicular immune homeostasis may lead to orchitis, an etiological factor of male infertility. The mechanisms underlying testicular immune privilege have been investigated for a long time. Increasing evidence shows that both a local immunosuppressive milieu and systemic immune tolerance are involved in maintaining testicular immune privilege status. The mechanisms underlying testicular innate immunity are emerging based on the investigation of the pattern recognition receptor-mediated innate immune response in testicular cells. This review summarizes our current understanding of testicular defense mechanisms and identifies topics that merit further investigation.

关键词： immune privilege innate immunity testis