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The Jasmine(Jasminum sambac)Genome Provides Insight into the Biosynthesis of Flower Fragrances and Jasmonates

Genomics, Proteomics & Bioinformatics 2023年第1期21卷 127-149页

作者： Gang Chen Salma Mostafa Zhaogeng Lu Ran Du jiawen cui Yun Wang Qinggang Liao Jinkai Lu Xinyu Mao Bang Chang Quan Gan Li Wang Zhichao Jia Xiulian Yang Yingfang Zhu Jianbin Yan Biao Jin College of Horticulture and Plant Protection Yangzhou UniversityYangzhou 225009China College of Bioscience and Biotechnology Yangzhou UniversityYangzhou 225009China Department of Floriculture Faculty of AgricultureAlexandria UniversityAlexandria 21526Egypt Key Laboratory of Plant Functional Genomics of the Ministry of Education Yangzhou UniversityYangzhou 225009China Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China College of Landscape Architecture Nanjing Forestry UniversityNanjing 210037China Institute of Plant Stress Biology State Key Laboratory of Cotton BiologyDepartment of BiologyHenan UniversityKaifeng 475001China

Jasminum sambac(jasmine flower),a world-renowned plant appreciated for its exceptional flower fragrance,is of cultural and economic importance.However,the genetic basis of its fragrance is largely unknown.Here,we present the first de novo genome assembly of J.sambac with 550.12 Mb(scaffold N50=40.10 Mb)assembled into 13 pseudochromosomes.Terpene synthase(TPS)genes associated with flower fragrance are considerably amplified in the form of gene clusters through tandem duplications in the genome.Gene clusters within the salicylic acid/benzoic acid/theobromine(SABATH)and benzylalcohol O-acetyltransferase/anthocyanin O-hydroxycinnamoyltransferases/anthranilate N-hydroxycinnamoyl/benzoyltransferase/deacetylvindoline 4-O-acetyltransferase(BAHD)superfamilies were identified to be related to the biosynthesis of phenylpropanoid/benzenoid compounds.Several key genes involved in jasmonate biosynthesis were duplicated,causing an increase in copy numbers.In addition,multi-omics analyses identified various aromatic compounds and many genes involved in fragrance biosynthesis pathways.Furthermore,the roles of JsTPS3 in b-ocimene biosynthesis,as well as JsAOC1 and JsAOS in jasmonic acid biosynthesis,were functionally validated.The genome assembled in this study for J.sambac offers a basic genetic resource for studying floral scent and jasmonate biosynthesis,and provides a foundation for functional genomic research and variety improvements in Jasminum.

关键词： Jasmine flower Jasminum sambac Genome Jasmonate Flower fragrance

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Physiological and Transcriptomic Changes During Autumn Coloration and Senescence in Ginkgo biloba Leaves

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Horticultural Plant Journal 2020年第6期6卷 396-408页

作者： Weixing Li Lu Wang Zhichong He Zhaogeng Lu jiawen cui Ningtao Xu Biao Jin Li Wang Colloge of Horticulture and Plant Protection Yangzhou UniversityYangzhou 225009China

Autumn leaf senescence and coloration is a complex process and a striking natural phenomenon.Here,through biology approach integrating transcriptomic analyses in Ginkgo biloba,we determined that the content of chlorophyll decreased during leaf senescence,while carotenoid components increased until late October in the turning stage(TS)and then decreased in the yellow leaf stage(YS).Simultaneously,chlorophyll biosynthesis genes exhibited significantly lower expression levels while chlorophyll degradation genes showed increased expression from the green leaf stage(GS)to YS.However,carotenoid biosynthesis-related genes showed enhanced expression,especially in TS.An analysis of the expression of genes related to senescence demonstrated that the expression levels of most abscisic acid-and jasmonic acid-related genes,autophagy,WRKY,and NAC genes increased,whereas cytoskeleton-,photosynthesis-,and antioxidation-related genes decreased from GS to YS.Furthermore,G.biloba seedlings exogenously treated with abscisic acid,jasmonic acid,or ultraviolet-B radiation all showed obvious color variation and senescence symptoms.We used these exogenously seedlings to further validate the function of several genes involved in chlorophyll biosynthesis and senescence.Taken together,these results contribute to the elucidation of the molecular mechanisms of leaf coloration and senescence in G.biloba as well as in the identification of candidate genes involved in this process.

关键词： Ginkgo biloba Leaf senescence Leaf coloration Transcriptome Gene expression

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The genome of Medicago polymorpha provides insights into its edibility and nutritional value as a vegetable and forage legume

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Horticulture Research 2021年第1期8卷 565-576页

作者： jiawen cui Zhaogeng Lu Tianyi Wang Gang Chen Salma Mostafa Hailong Ren Sian Liu Chunxiang Fu Li Wang Yingfang Zhu Jinkai Lu Xiang Chen Zhenwu Wei Biao Jin College of Horticulture and Plant Protection Yangzhou University225009 YangzhouChina College of Animal Science and Technology Yangzhou University225009 YangzhouChina Novogene Bioinformatics Institute 100083 BeijingChina College of Bioscience and Biotechnology Yangzhou University225009 YangzhouChina Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences266101 QingdaoChina State Key Laboratory of Crop Stress Adaptation and Improvement Key Laboratory of Cotton BiologySchool of Life SciencesHenan University475001 KaifengChina

Medicago polymorpha is a nutritious and palatable forage and vegetable plant that also fixes nitrogen.Here,we reveal the chromosome-scale genome sequence of M.polymorpha using an integrated approach including Illumina,PacBio and Hi-C technologies.We combined PacBio full-length RNA-seq,metabolomic analysis,structural anatomy analysis and related physiological indexes to elucidate the important agronomic traits of M.polymorpha for forage and vegetable usage.The assembled M.polymorpha genome consisted of 457.53Mb with a long scaffold N50 of 57.72Mb,and 92.92%(441.83Mb)of the assembly was assigned to seven pseudochromosomes.Comparative genomic analysis revealed that expansion and contraction of the photosynthesis and lignin biosynthetic gene families,respectively,led to enhancement of nutritious compounds and reduced lignin biosynthesis in M.polymorpha.In addition,we found that several positively selected nitrogen metabolism-related genes were responsible for crude protein biosynthesis.Notably,the metabolomic results revealed that a large number of flavonoids,vitamins,alkaloids,and terpenoids were enriched in M.polymorpha.These results imply that the decreased lignin content but relatively high nutrient content of M.polymorpha enhance its edibility and nutritional value as a forage and vegetable.Our genomic data provide a genetic basis that will accelerate functional genomic and breeding research on M.polymorpha as well as other Medicago and legume plants.

关键词： forage breeding value

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Unravelling the genetic basis for skeletal muscle mitochondrial DNA copy number variations in pigs

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Science China(Life Sciences) 2024年第1期67卷 211-214页

作者： jiawen Yang Leilei cui Yifeng Zhang Ziqi Ling Zhou Zhang Yizhong Huang Junwu Ma Shijun Xiao Bin Yang Lusheng Huang National Key Laboratory for Swine Genetic Improvement and Germplasm Innovation Jiangxi Agricultural UniversityNanchang 330045China School of Life Sciences Nanchang UniversityNanchang 330047China

Dear Editor,Mitochondria are the center of cellular energy generation and free radical metabolism,with important functions in regulating intracellular calcium levels,cell apoptosis,cell cycle and epigenetic modifications.Mitochondrial DNA copy number(mtDNA-CN)is an indicator of mitochondrial biogenesis and has been associated with several diseases,such as cardiovascular disease,depression,chronic kidney disease and aging in humans(Clyde,2022).

关键词： metabolism cardiovascular diseases

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Genome-wide identification of circular RNAs in Arabidopsis thaliana across the lifespan

Genome-wide identification of circular RNAs in Arabidopsis t...

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2016年全国植物生物学大会

作者： Gang Chen jiawen cui Li Wang Zhaogen Lu Biao Jin College of Bioscience and Biotechnology Yangzhou University College of Horticulture and Plant Protection Yangzhou University

Circular RNAs(circ RNAs) are a newly identified class of non-coding RNA with the presence of a covalent bond linking the 3′ and 5′ ends generated by backsplicing. Large amount of circ RNAs has been identified in humans,mammals,fish,insects,worms,fungi,and protists,whereas little is known about plant circ RNAs especially in tissue/developmental-stage-specific expression. Here,we conducted a genome-wide identification of circ RNAs in Arabidopsis thaliana across lifespan and presented the profile of complete circ RNAs via deep sequencing of RNA samples with r RNA and other linear RNA removed. In total,1217 circ RNAs were identified from the mixed samples which covered seven developmental stages in A. thaliana,using the strict threshold of at least two unique backspliced supporting reads. The identified circ RNAs showed a non-random distribution in all of the chromosomes,and most were exonic circ RNAs or located within a transcript. Functional annotation analysis indicated that many circ RNAs were related to photosynthesis. In addition,large proportions of circ RNAs were potential miRNA targets,and almost half of the identified circ RNAs had more than two different miRNA-binding sites,which possibly affecting the post-transcriptional regulation of genes by acting as miRNA sponges. Overall,our data provide an important resource for the emerging circ RNA research in A. thaliana and should contribute to enhanced understanding of circ RNAs in plants.

关键词： Circular RNA Arabidopsis deep sequence back-splice

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High-performance liquid metal electromagnetic actuator fabricated by femtosecond laser

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International Journal of Extreme Manufacturing 2024年第2期6卷 511-521页

作者： Yiyu Chen Hao Wu Rui Li Shaojun Jiang Shuneng Zhou Zehang cui Yuan Tao Xinyuan Zheng Qianqian Zhang jiawen Li Guoqiang Li Dong Wu Jiaru Chu Yanlei Hu CAS Key Laboratory of Mechanical Behavior and Design of Materials Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education InstitutesDepartment of Precision Machinery and Precision InstrumentationUniversity of Science and Technology of ChinaHefei 230027People’s Republic of China Key Laboratory of Testing Technology for Manufacturing Process of Ministry of Education Southwest University of Science and TechnologyMianyang 621010People’s Republic of China Department of Mechanical Engineering The University of Hong KongHong Kong Special Administrative Region of ChinaPeople’s Republic of China

Small-scale electromagnetic soft actuators are characterized by a fast response and simplecontrol,holding prospects in the field of soft and miniaturized robotics.The use of liquid metal(LM)to replace a rigid conductor inside soft actuators can reduce the rigidity and enhance the actuation performance and robustness.Despite research efforts,challenges persist in the flexible fabrication of LM soft actuators and in the improvement of actuation performance.To address these challenges,we developed a fast and robust electromagnetic soft microplate actuator based on a laser-induced selective adhesion transfer method.Equipped with unprecedentedly thin LM circuit and customized low Young’s modulus silicone rubber(1.03 kPa),our actuator exhibits an excellent deformation angle(265.25?)and actuation bending angular velocity(284.66 rad·s^(-1)).Furthermore,multiple actuators have been combined to build an artificial gripper with a wide range of functionalities.Our actuator presents new possibilities for designing small-scaleartificial machines and supports advancements in ultrafast soft and miniaturized robotics.

关键词： soft actuators femtosecond laser liquid metal

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天宫二号数据大气细颗粒物遥感反演

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遥感信息 2023年第5期38卷 122-129页

作者：李芮陈健崔嘉文南京信息工程大学遥感与测绘工程学院南京210044

针对天宫二号(TG-2)大气细颗粒物遥感反演及可行性问题,利用TG-2宽波段成像仪的可见近红外波段数据,结合MOD09A1地表反射率产品构建地表反射率库,使用6S传输模型和深蓝算法反演气溶胶光学厚度(aerosol optical depth,AOD),并结合能见度... 详细信息

针对天宫二号(TG-2)大气细颗粒物遥感反演及可行性问题,利用TG-2宽波段成像仪的可见近红外波段数据,结合MOD09A1地表反射率产品构建地表反射率库,使用6S传输模型和深蓝算法反演气溶胶光学厚度(aerosol optical depth,AOD),并结合能见度和相对湿度数据对AOD进行订正,利用统计模型估算了鲁豫皖典型地区的大气细颗粒物PM_(2.5)浓度,并对PM_(2.5)浓度的空间分布进行分析。结果表明:天宫二号数据在AOD和PM_(2.5)遥感反演中具有较高的可行性,拟合度分别达到0.910和0.902;经过垂直订正和湿度订正,PM_(2.5)和AOD之间的相关性大幅度提高;PM_(2.5)的空间分布呈“污染岛”特征,这在气溶胶排放和扩散研究中起着重要作用。天宫二号PM_(2.5)反演为区域大气污染监测提供了一种有效手段。

关键词：气溶胶光学厚度天宫二号深蓝算法地表反射率 PM_(2.5) 垂直订正湿度订正

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Hepatic Zbtb18 (Zinc Finger and BTB Domain Containing 18) alleviates hepatic steatohepatitis via FXR (Farnesoid X Receptor)

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Signal Transduction and Targeted Therapy 2024年第2期9卷 766-781页

作者： Lei Zhang Jiabing Chen Xiaoying Yang Chuangpeng Shen jiawen Huang Dong Zhang Naihua Liu Chaonan Liu Yadi Zhong Yingjian Chen Kaijia Tang Jingyi Guo Tianqi cui Siwei Duan Jiayu Li Shangyi Huang Huafeng Pan Huabing Zhang Xiaoqiang Tang Yongsheng Chang Yong Gao State Key Laboratory of Traditional Chinese Medicine Syndrome Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina Key Laboratory of Immune Microenvironment and Disease(Ministry of Education) Tianjin Key Laboratory of Cellular Homeostasis and DiseaseDepartment of Physiology and PathophysiologyTianjin Medical UniversityTianjinChina Jiangsu Key Laboratory of Immunity and Metabolism Department of Pathogen Biology and ImmunologyJiangsu International Laboratory of Immunity and MetabolismXuzhou Medical UniversityXuzhouChina Department of Endocrinology The First Clinical CollegeGuangzhou University of Chinese MedicineGuangdongChina The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine ShenzhenChina Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of Tumor Nanjing University of Chinese MedicineNanjingChina Department of Biochemistry and Molecular Biology Metabolic Disease Research CenterSchool of Basic MedicineAnhui Medical UniversityHefeiChina Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE State Key Laboratory of BiotherapyWest China Second University HospitalSichuan UniversityChengduChina

A lasting imbalance between fatty acid synthesis and consumption leads to non-alcoholic fatty liver disease(NAFLD),coupled with hepatitis and insulin resistance.Yet the details of the underlying mechanisms are not fully understood.Here,we unraveled that the expression of the transcription factor Zbtb18 is markedly decreased in the livers of both patients and murine models of NAFLD.Hepatic Zbtb18 knockout promoted NAFLD features like impaired energy expenditure and fatty acid oxidation(FAO),and induced insulin resistance.Conversely,hepatic Zbtb18 overexpression alleviated hepato-steatosis,insulin resistance,and hyperglycemia in mice fed on a high-fat diet(HFD)or in diabetic mice.Notably,in vitro and in vivo mechanistic studies revealed that Zbtb18 transcriptional activation of Farnesoid X receptor(FXR)mediated FAO and Clathrin Heavy Chain(CLTC)protein hinders NLRP3 inflammasome activity.This key mechanism by which hepatocyte’s Zbtb18 expression alleviates NAFLD and consequent liver fibrosis was further verified by FXR’s deletion and forced expression in mice and cultured mouse primary hepatocytes(MPHs).Moreover,CLTC deletion significantly abrogated the hepatic Zbtb18 overexpression-driven inhibition of NLRP3 inflammasome activity in macrophages.Altogether,Zbtb18 transcriptionally activates the FXR-mediated FAO and CLTC expression,which inhibits NLRP3 inflammasome’s activity alleviating inflammatory stress and insulin resistance,representing an attractive remedy for hepatic steatosis and fibrosis.

关键词： hepatic Hepatic impaired

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初中英语以“读”促“写”教学的问题与对策

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英语教师 2022年第12期22卷 67-69页

作者：崔嘉雯广东省佛山市南海区西樵镇樵北中学广东佛山528200

针对初中英语以“读”促“写”教学存在的问题,从教学设计、策略、思维等三个方面提出对策。认为教师在开展以“读”促“写”教学时,要精心设计,引导学生在充分掌握基础语言知识、技能的基础上,学会从语篇角度分析作者的写作意图,文章... 详细信息

针对初中英语以“读”促“写”教学存在的问题,从教学设计、策略、思维等三个方面提出对策。认为教师在开展以“读”促“写”教学时,要精心设计,引导学生在充分掌握基础语言知识、技能的基础上,学会从语篇角度分析作者的写作意图,文章的文化内涵、写作技巧;注重策略培养,引导学生养成通过阅读积累知识的习惯,提升运用所学英语知识写作的兴趣和积极性;注重思维能力培养,使学生形成多角度、深度解读文本的能力,促使其高质量地完成写作,从而实现以“读”促“写”,提升综合语言运用能力。

关键词：以“读”促“写” 初中英语读写结合

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中泰课堂文化差异分析及对策研究

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文化创新比较研究 2022年第3期6卷 157-160页

作者：崔佳文河南理工大学文法学院河南焦作454000

课堂文化是实践活动的产物,是师生长期在课堂教学实践中协作而产生的价值理念和行为规范。中国和泰国的课堂有很大的区别,这些区别具体表现为教育理念、时间理念、学生的课堂秩序等方面。这些截然不同的课堂文化反映了两国人民不同的价... 详细信息

课堂文化是实践活动的产物,是师生长期在课堂教学实践中协作而产生的价值理念和行为规范。中国和泰国的课堂有很大的区别,这些区别具体表现为教育理念、时间理念、学生的课堂秩序等方面。这些截然不同的课堂文化反映了两国人民不同的价值观、思维方式和行为准则。在泰国的中国汉语教师应采取相关策略,只有积极了解和适应泰国汉语课堂文化,才可以提高对泰汉语课堂的教学效率。

关键词：课堂文化中泰对比文化差异教学建议

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