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Single-cell transcriptome analysis dissects lncRNA-associated gene networks in Arabidopsis

Plant communications 2024年第2期5卷 94-105页

作者： Zhaohui He Yangming Lan Xinkai Zhou Bianjiong Yu Tao Zhu Fa Yang Liang-Yu Fu Haoyu Chao Jiahao Wang Rong-Xu Feng Shimin Zuo Wenzhi Lan Chunli Chen Ming Chen Xue Zhao Keming Hu Dijun Chen State Key Laboratory of Pharmaceutical Biotechnology School of Life SciencesNanjing UniversityNanjing 210023China Department of Bioinformatics College of Life SciencesZhejiang UniversityHangzhou 310058China Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education College of AgricultureYangzhou UniversityYangzhou 225009China co-innovation center for modern production technology of grain crops of Jiangsu Province/Key Laboratory of Crop Genetics and Physiology of Jiangsu Province Yangzhou UniversityYangzhou 225009China Zhejiang Zhoushan High School Zhoushan 316099China National Key Laboratory for Germplasm innovation and Utilization for Fruit and Vegetable Horticultural crops Hubei Hongshan LaboratoryWuhan 430070China

The plant genome produces an extremely large collection of long noncoding RNAs(lncRNAs)that are generally expressed in a context-specific manner and have pivotal roles in regulation of diverse biological ***,we mapped the transcriptional heterogeneity of lncRNAs and their associated gene reg-ulatory networks at single-cell *** generated a comprehensive cell atlas at the whole-organism level by integrative analysis of 28 published single-cell RNA sequencing(scRNA-seq)datasets from juvenile Arabidopsis *** then provided an in-depth analysis of cell-type-related lncRNA signatures that show expression patterns consistent with canonical protein-coding gene *** further demon-strated that the cell-type-specific expression of lncRNAs largely explains their tissue *** addi-tion,we predicted gene regulatory networks on the basis of motif enrichment and co-expression analysis of lncRNAs and mRNAs,and we identified putative transcription factors orchestrating cell-type-specific expression of *** analysis results are available at the single-cell-based plant lncRNA atlas data-base(scPLAD;https://***/scPLAD/).Overall,this work demonstrates the power of inte-grative single-cell data analysis applied to plant lncRNA biology and provides fundamental insights into lncRNA expression specificity and associated gene regulation.

关键词： single-cell transcriptomics long noncoding RNAs lncRNAs gene regulatory networks GRNs plants

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RETINOBLASTOMA RELATED 1 switches mitosis to meiosis in rice

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Plant communications 2024年第6期5卷 193-212页

作者： Yongjie Miao Hanli You Huixin Liu Yangzi Zhao Jiangzhe Zhao Yafei Li Yi Shen Ding Tang Baohui Liu Kewei Zhang Zhukuan Cheng Guangdong Provincial Key Laboratory of Plant Adaptation and Molecular Design Innovative Center of Molecular Genetics and EvolutionSchool of Life SciencesGuangzhou UniversityGuangzhou 510006China Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding Laboratory/Key Laboratory of Plant Functional Genomics of the Ministry of Education Agricultural College of Yangzhou UniversityYangzhou 225009China State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China Zhejiang Provincial Key Laboratory of Biotechnology on Specialty Economic Plants Department of BiologyCollege of Life SciencesZhejiang Normal UniversityJinhua 321004China Jiangsu co-innovation center for modern production technology of grain crops/Jiangsu Key Laboratory of Crop Genetics and Physiology Yangzhou UniversityYangzhou 225009China

The transition from mitosis to meiosis is a critical event in the reproductive development of all sexually reproducing ***,the mechanisms that regulate this process in plants remain largely ***,we find that the rice(Oryza sativa L.)protein RETINOBLASTOMA RELATED 1(RBR1)is essential to the transition from mitosis to *** of RBR1 function results in hyper-proliferative sporogenous-celllike cells(SCLs)in the anther locules during early stages of reproductive *** hyperproliferative SCLs are unable to initiate meiosis,eventually stagnating and degrading at late developmental stages to form pollen-free *** results suggest that RBR1 acts as a gatekeeper of entry into ***,cytokinin content is significantly increased in rbr1 mutants,whereas the expression of type-B response factors,particularly LEPTO1,is significantly *** the known close association of cytokinins with cell proliferation,these findings imply that hyper-proliferative germ cells in the anther locules may be attributed to elevated cytokinin concentrations and disruptions in the cytokinin *** a genetic strategy,the association between germ cell hyper-proliferation and disturbed cytokinin signaling in rbr1 has been *** summary,we reveal a unique role of RBR1 in the initiation of meiosis;our results clearly demonstrate that the RBR1 regulatory module is connected to the cytokinin signaling pathway and switches mitosis to meiosis in rice.

关键词： RETINOBLASTOMA RELATED1 meiosis initiation cytokinin rice

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Two ABCI family transporters,OsABCI15 and OsABCI16,are involved in grain-filling in rice

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Journal of Genetics and Genomics 2024年第5期51卷 492-506页

作者： Bin Ma Xiubiao Cao Xiaoyuan Li Zhong Bian Qi-Qi Zhang Zijun Fang Jiyun Liu Qun Li Qiaoquan Liu Lin Zhang Zuhua He Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding Laboratory/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology Agricultural College of Yangzhou UniversityYangzhouJiangsu 225009China Jiangsu co-innovation center for modern production technology of grain crops Jiangsu Key Laboratory of Crop Genetics and PhysiologyYangzhou UniversityYangzhouJiangsu 225009China National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology&EcologyChinese Academy of SciencesShanghai 200032China Institute of Biotechnology Hangzhou Academy of Agricultural SciencesHangzhouZhejiang 310024China Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education Yangzhou UniversityYangzhouJiangsu 225009China

Seed development is critical for plant reproduction and crop yield,with panicle seed-setting rate,grain-filling,and grain weight being key seed characteristics for yield ***,few genes are known to regulate grain ***,we identify two adenosine triphosphate(ATP)-binding cassette(ABC)I-type transporter genes,OsABCI15 and OsABCI16,involved in rice *** genes are highly expressed in developing seeds,and their proteins are localized to the plasma membrane and ***,knockout of OsABCI15 and OsABCI16 results in a significant reduction in seed-setting rate,caused predominantly by the severe empty pericarp phenotype,which differs from the previously reported low seed-setting phenotype resulting from failed *** analysis indicates that OsABCI15 and OsABCI16 participate in ion homeostasis and likely export ions between filial tissues and maternal tissues during grain ***,overexpression of OsABCI15 and OsABCI16 enhances the seed-setting rate and grain yield in transgenic plants and decreases ion accumulation in brown ***,the OsABCI15/16 orthologues in maize exhibit a similar role in kernel development,as demonstrated by their disruption in transgenic ***,ourﬁndings reveal the important roles of two ABC transporters in cereal grain filling,highlighting their value in crop yield improvement.

关键词： ABC transporters Rice grain filling Ion homeostasis grain yield

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Development of a novel critical nitrogen concentration-cumulative transpiration curve for optimizing nitrogen management under varying irrigation conditions in winter wheat

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The Crop Journal 2024年第4期12卷 1242-1251页

作者： Tianyang Ye Yu Zhang Jingyan Xuan Xintian Wang Yang Li Junhao Xu Liujun Xiao Leilei Liu Liang Tang Weixing Cao Bing Liu Yan Zhu National Engineering and technology center for Information Agriculture Engineering Research Center of Smart AgricultureMinistry of EducationKey Laboratory for Crop System Analysis and Decision MakingMinistry of AgricultureJiangsu Key Laboratory for Information AgricultureJiangsu Collaborative Innovation Center for Modern Crop ProductionNanjing Agricultural UniversityNanjing 210095JiangsuChina Institute of Remote Sensing and Digital Agriculture Sichuan Academy of Agricultural SciencesChengdu 610066SichuanChina

Accurate nitrogen(N)nutrition diagnosis is essential for improving N use efficiency in crop *** widely used critical N(Nc)dilution curve traditionally depends solely on agronomic variables,neglecting crop water *** three-year field experiments with winter wheat,encompassing two irrigation levels(rainfed and irrigation at jointing and anthesis)and three N levels(0,180,and 270 kg ha1),this study aims to establish a novel approach for determining the Nc dilution curve based on crop cumulative transpiration(T),providing a comprehensive analysis of the interaction between N and water *** Nc curves derived from both crop dry matter(DM)and T demonstrated N concentration dilution under different conditions with different *** equation Nc=6.43T0.24 established a consistent relationship across varying irrigation *** test results indicated that the nitrogen nutrition index(NNI),calculated from this curve,effectively identifies and quantifies the two sources of N deficiency:insufficient N supply in the soil and insufficient soil water concentration leading to decreased N availability for root ***,the NNI calculated from the Nc-DM and Nc-T curves exhibited a strong negative correlation with accumulated N deficit(Nand)and a positive correlation with relative grain yield(RGY).The NNI derived from the Nc-T curve outperformed the NNI derived from the Nc-DM curve concerning its relationship with Nand and RGY,as indicated by larger R2 values and smaller *** novel Nc curve based on T serves as an effective diagnostic tool for assessing winter wheat N status,predicting grain yield,and optimizing N fertilizer management across varying irrigation *** findings would provide new insights and methods to improve the simulations of water-N interaction relationship in crop growth models.

关键词： Crop dry matter Crop cumulative transpiration Bayesian statistical model Critical nitrogen dilution curve Nitrogen nutrition index

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Effects of high temperature during grain filling on physicochemical properties of waxy maize starch

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Journal of Integrative Agriculture 2016年第2期15卷 309-316页

作者： LU Da-lei YANG Huan SHEN Xin LU Wei-ping Jiangsu Key Laboratory of Crop Genetics and Physiology/co-innovation center for modern production technology of grain crops Yangzhou University

Understanding the waxy maize starch physicochemical properties response to heat stress during grain filling could improve starch *** effects of heat stress during early（1-15 days after pollination,DAP） and late（16-30 DAP） grain filling stages on the starch physicochemical properties of four waxy maize varieties were *** only increased in Suyunuo 5 after exposure to high temperature at late grain filling *** effects of heat stress on digestibility and swelling power were dependent on varieties and ***,swelling power was increased by heat stress at early grain development stage and digestibility was increased by high temperature at late grain filling stage,*** results of correlation analysis indicated the starch with large granule size could swell well and easy ***,trough,final,and breakdown viscosities in response to heat stress were dependent on stages and *** general,peak,trough and final viscosities were decreased and increased by heat stress at early grain formation and late grain filling stages,respectively;whereas the breakdown and setback viscosities were similar among the three *** stress increased the gelatinization temperatures and retrogradation *** range decreased under heat stress at 1-15 DAP but remained constant under heat stress at 16-30 DAP in all *** starch exposed to high temperature at 16-30 DAP presented higher digestibility and peak viscosity and lower retrogradation percentage than those at 1-15 ***,heat stress at early grain formation stage severely affects the physicochemical properties of starch.

关键词： waxy maize heat stress digestibility pasting gelatinization retrogradation

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Polyamines mediate the effect of post-anthesis soil drying on starch granule size distribution in wheat kernels

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The Crop Journal 2016年第6期4卷 444-458页

作者： Yunji Xu Mengting Qiu Yinyin Li Xiyang Qian Junfei Gu Jianchang Yang Jiangsu Key Laboratory of Crop Genetics and Physiology/co-innovation center for modern production technology of grain crops Yangzhou University

Polyamines(PAs) are important endogenous plant growth regulators responding to environmental stress and mediating many physiological processes including grain filling in *** study investigated whether PAs mediate the effect of post-anthesis soil drying on starch granule size distribution,starch content,and weight of superior and inferior kernels of wheat(Triticum aestivum L.).Two wheat cultivars were grown in *** treatments,well-watered(WW),moderate soil drying(MD) and severe soil drying(SD),were imposed from 9 days post-anthesis until *** levels in kernels and small,medium and large granules were *** results showed that superior kernels had much higher free spermidine(Spd) and free spermine(Spm) concentrations,larger volumes of medium starch granules,and smaller-sized large granules than did inferior kernels under all the *** to WW,MD significantly increased the concentrations of free Spd and free Spm,activities of soluble starch synthase and granule-bound starch synthase,volume of medium granules,and starch content and kernel weight of inferior kernels,and decreased the size of large *** produced the opposite *** of Spd or Spm to spikes produced effects similar to those of MD,and application of an inhibitor of Spd and Spm synthesis produced effects similar to those of *** results suggest that PAs mediate the effect of post-anthesis soil drying on starch biosynthesis in wheat kernels by regulating key enzymes in starch synthesis and that elevated PA levels under MD increase the volume of medium granules and kernel weight of inferior kernels.

关键词： Polyamines Starch granule size distribution Soil drying Triticum aestivum L.(wheat)

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Versatile plant genome engineering using anti-CRISPR-Cas12a systems

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Science China Life Sciences 2024年

作者： Yao He Shishi Liu Long Chen Dongkai Pu Zhaohui Zhong Tang Xu Qiurong Ren Chuan Dong Yawei Wang Danning Wang Xuelian Zheng Fengbiao Guo Tao Zhang Yiping Qi Yong Zhang Integrative Science center of Germplasm Creation in Western China (Chongqing) Science City Chongqing Key Laboratory of Tree Germplasm Innovation and Utilization School of Life Sciences Southwest University Department of Biotechnology School of Life Sciences and Technology Center for Informational Biology University of Electronic Science and Technology of China Sichuan Institute of Edible Fungi Sichuan Academy of Agricultural Sciences Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding Laboratory/Key Laboratory of Plant Functional Genomics of the Ministry of Education College of AgricultureYangzhou University Jiangsu co-innovation center for modern production technology of grain crops/Jiangsu Key Laboratory of Crop Genetics and Physiology Yangzhou University Department of Respiratory and Critical Care Medicine Zhongnan Hospital of Wuhan University Key Laboratory of combinatorial Biosynthesis and Drug Discovery Ministry of Education and School of Pharmaceutical Sciences Wuhan University Department of Plant Science and Landscape Architecture University of Maryland College Park 20742 Institute for Bioscience and Biotechnology Research University of Maryland

CRISPR-Cas12a genome engineering systems have been widely used in plant research and crop breeding. To date, the performance and use of anti-CRISPR-Cas12a systems have not been fully established in plants. Here, we conduct in silico analysis to identify putative anti-CRISPR systems for Cas12a. These putative anti-CRISPR proteins, along with known anti-CRISPR proteins, are assessed for their ability to inhibit Cas12a cleavage activity in vivo and in planta. Among all anti-CRISPR proteins tested, AcrVA1 shows robust inhibition of Mb2Cas12a and LbCas12a in E. coli. Further tests show that AcrVA1 inhibits LbCas12a mediated genome editing in rice protoplasts and stable transgenic lines. Impressively, co-expression of AcrVA1 mitigates off-target effects by CRISPR-LbCas12a, as revealed by whole genome sequencing. In addition, transgenic plants expressing AcrVA1 exhibit different levels of inhibition to LbCas12a mediated genome editing, representing a novel way of fine-tuning genome editing efficiency. By controlling temporal and spatial expression of AcrVA1, we show that inducible and tissue specific genome editing can be achieved in plants. Furthermore, we demonstrate that AcrVA1 also inhibits LbCas12a-based CRISPR activation(CRISPRa) and based on this principle we build logic gates to turn on and off target genes in plant cells. Together, we have established an efficient anti-CRISPR-Cas12a system in plants and demonstrate its versatile applications in mitigating off-target effects, finetuning genome editing efficiency, achieving spatial-temporal control of genome editing, and generating synthetic logic gates for controlling target gene expression in plant cells.

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Mitigation of polycyclic aromatic hydrocarbons(PAHs)in roasted beef patties by cold plasma treatment and products quality evaluation

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Food Science and Human Wellness 2024年第5期13卷 2993-3005页

作者： Yuke Hou Yangjian Hu Min Li Jiahui Nong Fengyuan Xie Yuhan Fan Jianhao Zhang Xianming Zeng Minyi Han Xinglian Xu Xia Wang Key Laboratory of Animal Products Processing Ministry of AgricultureKey Laboratory of Meat Processing and Quality ControlMinistry of EducationJiangsu Synergetic Innovation Center of Meat Production and ProcessingCollege of Food Science and TechnologyNanjing Agricultural UniversityNanjing 2100095China center for Food and Drug Safety Inspection of Maanshan Maanshan Administration for Market RegulationMaanshan 243000China Henan Key Laboratory of cold Chain Food Quality and Safety control Zhengzhou University of Light IndustryZhengzhou 450001China collaborative innovation center for modern grain Circulation and Safety Key Laboratory of Grains and Oils Quality Control and ProcessingCollege of Food Science and EngineeringNanjing University of Finance and EconomicsNanjing 210023China

The cold plasma(CP)technique was applied to alleviate the contamination of polycyclic aromatic hydrocarbon(PAH)in this *** different CP treatments methods were implemented in the production of beef patties,to investigate their inhibition and degradation capacity on *** 5 different cooking oils and fats addition,the inhibition mechanism of in-package cold plasma(ICP)pretreatment was explored from the aspect of raw patties fatty acids composition *** results of principal component analysis showed that the first two principal components accounted for more than 80%of the total variation in the original data,indicating that the content of saturated fatty acids was significantly positively correlated with the formation of *** pretreatment inhibited the formation of PAHs by changing the composition of fatty acids,which showed that the total amount of polyunsaturated fatty acids decreased and the total amount of monounsaturated fatty acids *** discrimination tests demonstrated there were discernable differences between 2 CP treated samples and the controls,utilization of the ICP pretreatment in meat products processing was expected to achieve satisfying eating *** conclusion,CP treatment degraded PAHs through stepwise ring-opening oxidation in 2 reported pathways,the toxicity of PAHs contaminated products was alleviated after CP treatment.

关键词： Roasted beef Polycyclic aromatic hydrocarbons cold plasma Mitigation mechanism Product quality evaluation

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grain quality changes and responses to nitrogen fertilizer of japonica rice cultivars released in the Yangtze River Basin from the 1950s to 2000s

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The Crop Journal 2015年第4期3卷 285-297页

作者： Junfei Gu Jing Chen Lu Chen Zhiqin Wang Hao Zhang Jianchang Yang Key Laboratory of Crop Genetics and Physiology of Jiangsu Province Co-Innovation Center for Modern Production Technology of Grain CropsYangzhou University

While the yield potential of rice has increased but little is known about the impact of breeding on grain quality, especially under different levels of N availability. In order to investigate the integrated effects of breeding and N levels on rice quality 12 japonica rice cultivars bred in the past60 years in the Yangtze River Basin were used with three levels of N: 0 kg N ha-1, 240 kg N ha-1,and 360 kg N ha-1. During the period, milling quality(brown rice percentage, milled rice percentage, and head rice percentage), appearance quality(chalky kernels percentage, chalky size, and chalkiness), and eating and cooking quality(amylose content, gel consistency, peak viscosity, breakdown, and setback) were significantly improved, but the nutritive value of the grain has declined due to a reduction in protein content. Micronutrients, such as Cu, Mg, and S contents, were decreased, and Fe, Mn, Zn, Na, Ca, K, P, B contents were increased. These changes in grain quality imply that simultaneous improvements in grain yield and grain quality are possible through selection. Overall, application of N fertilizer decreased grain quality, especially in terms of eating and cooking quality. Under higher N levels, higher protein content was the main reason for deterioration of grain quality, although lower amylose content might contribute to improving starch pasting properties. These results suggest that further improvement in grain quality will depend on both breeding and cultivation practices, especially in regard to nitrogen and water management.

关键词： Breeding Cultivation technique grain quality Japonica rice Nitrogenous fertilizer

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comparison of agronomic performance between inter-sub-specific hybrid and inbred japonica rice under different mechanical transplanting methods

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Journal of Integrative Agriculture 2018年第4期17卷 806-816页

作者： HU Ya-jie WU Pei ZHANG Hong-cheng DAI Qi-gen HUO Zhong-yang XU Ke GAO Hui WEI Hai-yan GUO Bao-wei CUI Pei-yuan Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu co-innovation center for modern production technology of grain crops Yangzhou University

Mechanical transplanting has been applied to rice cultivation to save labor costs and ease labor shortages in Asian countries, especially in China. However, little information is available related to the characteristics of agronomic performance when comparing inter-sub-specific hybrid rice(IHR) and inbred japonica rice(IJR) under mechanical transplanting method. In 2013 and 2014, field experiments were conducted using IHR(Yongyou 2640) and IJR(Wuyunjing 24) under two cultivation patterns, that is, pot seedlings mechanically transplanted(PS) and carpet seedlings mechanically transplanted(CS). grain yield, yield components, leaf area index(LAI), leaf area duration(LAD), aboveground biomass, crop growth rate(CGR), nitrogen(N) uptake, and N accumulation were investigated. When compared with CS, PS displayed significantly increased grain yield for both varieties because the larger sink size allowed higher N accumulation from panicle initiation to maturity. Moreover, total aboveground biomass under PS increased significantly compared with that under CS; that is, higher photosynthetic productivity resulted from a greater LAI and higher LAD during the grain filling stage. Higher N absorption capacity in the middle and late growth periods resulted in significantly enhanced total N uptake under PS. When compared with IJR for both treatments, IHR generated 75.2% more grain yield. However, the characteristics creating high yield of IHR were different from those of IJR. Greater aboveground biomass production as well as higher N uptake and accumulation created higher grain yield in IHR than in IJR. These results suggest higher yield could be achieved using PS with IHR, attributing to exploit both yield superiority and productive potential.

关键词： high yield formation inter-sub-specific hybrid rice inbred japonica rice mechanical transplanting method

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