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Oryza sativa mediator subunit OsMED25 interacts with OsBZR1 to regulate brassinosteroid signaling and plant architecture in rice

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Journal of Integrative Plant Biology 2020年第6期62卷 793-811页

作者： Yuekun Ren xiaojie tian Shuyu Li Enyang Mei Mingliang He Jiaqi Tang Min Xu Xiufeng Li Zhenyu Wang Chuanyou Li Qingyun Bu Northeast Institute of Geography and Agroecology Key Laboratory of Soybean Molecular Design BreedingChinese Academy of SciencesHarbin 150081China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Plant Genomics and National Center for Plant Gene Research(Beijing) Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China The Innovative Academy of Seed Design Chinese Academy of SciencesBeijing 100101China

Brassinosteroids(BRs)are plant-specific steroid hormones which regulate plant growth,development,and *** regulation plays key roles in plant hormone signaling.A mediator can serve as a bridge between gene-specific transcription factors and the RNA polymerase machinery,functioning as an essential component in regulating the transcriptional ***,whether a mediator is involved in BR signaling is ***,we discovered that Oryza sativa mediator subunit 25(Os MED25)is an important regulator of rice BR *** analyses showed that the Os MED25-RNAi and osmed25 mutant presented erect leaves,as observed in BR-deficient *** addition,the Os MED25-RNAi and osmed25 mutant exhibited decreased BR *** analysis indicated that Os MED25-RNAi could suppress the enhanced BR signaling phenotype of *** biochemical analysis showed that Os MED25 interacts with Os BZR1 in vivo,and Os MED25 is enriched on the promoter of Os BZR1 target *** sequencing analysis indicated that Os MED25 affects the expression of approximately 45%of Os BZR1-regulated genes and mainly functions as a corepressor of Os ***,these findings revealed that Os MED25 regulates rice BR signaling by interacting with Os BZR1 and modulating the expression of Os BZR1 target genes,thus expanding our understanding of the roles of mediators in plant hormone signaling.

关键词： plant Together analysis

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Combinations of Hd2 and Hd4 genes determine rice adaptability to Heilongjiang Province, northern limit of China

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Journal of Integrative Plant Biology 2015年第8期57卷 698-707页

作者： Xiufeng Li Huazhao Liu Maoqing Wang Hualong Liu xiaojie tian Wenjia Zhou tianxiao Lü Zhenyu Wang Chengcai Chu Jun Fang Qingyun Bu Northeast Institute of Geography and Agroecology Key Laboratory of Soybean Molecular Design Breeding the Chinese Academy of Sciences University of Chinese Academy of Sciences Rice Research Institute Heilongjiang Academy of Land Reclamation Sciences Beidahuang Kenfeng Seed Co.Ltd. College of Agriculture Northeast Agricultural University State Key Laboratory of Plant Genomics Institute of Genetics and Developmental Biology Chinese Academy of Sciences

Heading date is a key trait in rice domestication and adaption, and a number of quantitative trait loci（QTLs）have been identified. The rice（Oryza sativa L.） cultivars in the Heilongjiang Province, the northernmost region of China,have to flower extremely early to fulfill their life ***, the critical genes or different gene combinations controlling early flowering in this region have not been determined. QTL and candidate gene analysis revealed that Hd2/Ghd7.1/Os PRR37 plays a major role in controlling rice distribution in Heilongjiang. Further association analysis with a collection of rice cultivars demonstrated that another three major QTL genes（Hd4/Ghd7, Hd5/DTH8/Ghd8, and Hd1）also participate in regulating heading date under natural long day（LD） conditions. Hd2/Ghd7.1/Os PRR37 and Hd4/Ghd7 are two major QTLs and function additively. With the northward rice cultivation, the Hd2/Ghd7.1/Os PRR37 and Hd4/Ghd7 haplotypes became non-functional alleles. Hd1 might be non-functional in most Heilongjiang rice varieties,implying that recessive hd1 were selected during local rice breeding. Non-functional Hd5/DTH8/Ghd8 is very rare, but constitutes a potential target for breeding extremely early flowering cultivars. Our results indicated that diverse genetic combinations of Hd1, Hd2, Hd4, and Hd5 determined the different distribution of rice varieties in this northernmost province of China.

关键词： Rice heading date Hdl Hd2 Hd4 Hd5

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High-Efficiency Reduction of Rice Amylose Content via CRISPR/Cas9-Mediated Base Editing

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Rice science 2020年第6期27卷 445-448页

作者： Li He Li Xiufeng Xu Yang Liu Hualong He Mingliang tian xiaojie Wang Zhenyu Wu Xiuju Bu Qingyun Yang Jie College of Life Science Northeast Agricultural UniversityHarbin 150030China Northeast Institute of Geography and Agroecology Key Laboratory of Soybean Molecular Design BreedingChinese Academy of SciencesHarbin 150081China Institute of Food Crops Jiangsu Academy of Agricultural SciencesNanjing 210014China Rice Research Institute College of AgricultureNortheast Agricultural UniversityHarbin 150030China

Rice is a staple food for more than half of the human *** has been estimated that by 2030,rice production must increase by 40%to meet the growing demand(Khush,2005).In addition,with the improvement of people's living standards,the demand for elite rice with better eating and cooking quality(ECQ)is *** is determined by several factors,including amylose content(AC),gel consistency(GC),gelatinization temperature(GT)and viscosity,where AC is the predominant factor(Juliano,1998).

关键词： CRISPR/Cas9 elite cooking

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High-efficiency breeding of early-maturing rice cultivars via CRISPR/Cas9-mediated genome editing

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Journal of Genetics and Genomics 2017年第3期44卷 175-178页

作者： Xiufeng Li Wenjia Zhou Yuekun Ren xiaojie tian tianxiao Lv Zhenyu Wang Jun Fang Chengcai Chu Jie Yang Qingyun Bu Northeast Institute of Geography and Agroecology Key Laboratory of Soybean Molecular Design BreedingChinese Academy of SciencesHarbin 150081China Graduate University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Institute of Food Crops Jiangsu Academy of Agricultural SciencesNanjing 210014China

Rice is a staple food for more than half of the human *** has been estimated that by 2030,40%more rice needs to be produced in order to meet the growing demand（Khush,2005）.One of the strategies to improve rice productivity is to enlarge rice growth areas, such as the northward expansion of the growth region in Heilongjiang Province, the northernmost region of China （Li et al., 2015）. However, the northward cultivation is accompanied with daylength extension and temperature decrease, which are unfavor- able for rice, a tropical short-day plant, to complete flowering and seed setting. Thus, the need for early-maturing rice cultivars with extremely low photoperiod sensitivity is urgent.

关键词： In than High-efficiency breeding of early-maturing rice cultivars via CRISPR/Cas9-mediated genome editing

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OsWRKY78 regulates panicle exsertion via gibberellin signaling pathway in rice

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Journal of Integrative Plant Biology 2024年第4期66卷 771-786页

作者： Enyang Mei Mingliang He Min Xu Jiaqi Tang Jiali Liu Yingxiang Liu Zhipeng Hong Xiufeng Li Zhenyu Wang Qingjie Guan xiaojie tian Qingyun Bu State Key Laboratory of Black Soils Conservation and Utilization Key Laboratory of Soybean Molecular Design BreedingNortheast Institute of Geography and AgroecologyChinese Academy of SciencesHarbin 150081China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Saline-alkali Vegetation Ecology Restoration Northeast Forestry UniversityMinistry of EducationHarbin 150040China College of Life Science Northeast Forestry UniversityHarbin 150040China

Panicle exsertion is one of the crucial agronomic traits in rice(Oryza sativa).Shortening of panicle exsertion often leads to panicle enclosure and severely reduces seed ***(GA)plays important roles in regulating panicle ***,the underlying mechanism and the relative regulatory network remain ***,we characterized the oswrky78 mutant showing severe panicle enclosure,and found that the defect of oswrky78 is caused by decreased bioactive GA *** analysis demonstrates that OsWRKY78 can directly activate GA biosynthesis and indirectly suppress GA ***,we found OsWRKY78 can interact with and be phosphorylated by mitogen-activated protein kinase(MAPK)kinase OsMAPK6,and this phosphorylation can enhance OsWRKY78 stability and is necessary for its biological *** together,these results not only reveal the critical function of OsWRKY78,but also reveal its mechanism via mediating crosstalk between MAPK and the GA signaling pathway in regulating panicle exsertion.

关键词： gibberellin MAPK cascades OsWRKY78 panicle exsertion rice

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OsMKKK70 regulates grain size and leaf angle in rice through the OsMKK4-OsMAPK6-OsWRKY53 signaling pathway

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Journal of Integrative Plant Biology 2021年第12期63卷 2043-2057页

作者： Zhiqi Liu Enyang Mei xiaojie tian Mingliang He Jiaqi Tang Min Xu Jiali Liu Lu Song Xiufeng Li Zhenyu Wang Qingjie Guan Qijiang Xu Qingyun Bu Key Laboratory of Saline-alkali Vegetation Ecology Restoration(Northeast Forestry University) Ministry of EducationHarbin 150040China College of Life Science Northeast Forestry UniversityHarbin 150040China Northeast Institute of Geography and Agroecology Key Laboratory of Soybean Molecular Design BreedingCASHarbin 150081China University of Chinese Academy of Sciences Beijing 100049China School of Laboratory Medicine Youjiang Medical University for NationalitiesBaise 533000China The Innovative Academy of Seed Design Chinese Academy of SciencesBeijing 100101China

Grain size and leaf angle are key agronomic traits that determine final yields in ***,the underlying molecular mechanisms are not well *** we demonstrate that the Oryza sativa Mitogen Activated Protein Kinase Kinase Kinase OsMKKK70 regulates grain size and leaf angle in *** OsMKKK70 caused plants to produce longer *** osmkkk62/70 double mutant and the osmkkk55/62/70 triple mutant displayed significantly smaller seeds and a more erect leaf angle compared to the wild type,indicating that OsMKKK70 functions redundantly with its homologs Os MKKK62 and Os *** analysis demonstrated that OsMKKK70 is an active kinase and that OsMKKK70 interacts with Os MKK4 and promotes Os MAPK6 *** addition,the osmkkk62/70 double mutant showed reduced sensitivity to Brassinosteroids(BRs).Finally,overexpressing constitutively active Os MKK4,Os MAPK6,and Os WRKY53 can partially complement the smaller seed size,erect leaf,and BR hyposensitivity of the osmkkk62/70 double *** together,these findings suggest that OsMKKK70 might regulate grain size and leaf angle in rice by activating Os MAPK6 and that OsMKKK70,Os MKK4,Os MAPK6,and Os WRKY53 function in a common signaling pathway that controls grain shape and leaf angle.

关键词： Brassinosteroids MAPK signaling OsMKKK70 rice seed size

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bZIP71 delays flowering by suppressing Ehd1 expression in rice

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Journal of Integrative Plant Biology 2022年第7期64卷 1352-1363页

作者： 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 Northeast Institute of Geography and Agroecology Key Laboratory of Soybean Molecular Design Breedingthe Chinese Academy ofSciencesHarbin 150081China University of Chinese Academy of Sciences Beijing 100049China College of Life Science Northeast Forestry UniversityHarbin 150040China Key Laboratory of Saline-alkali Vegetation Ecology Restoration(Northeast Forestry University) Ministry of EducationHarbin 150040China State Key Lab of Rice Biology China National Rice Research InstituteHangzhou 311400China The Innovative Academy of Seed Design the Chinese Academy of SciencesBeijing 100101China

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 ***,we report that a basic leucine zipper transcription factor,bZIP71,functions as a flowering *** 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 ***,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 ***,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 *** 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.

关键词： flowering time H3K27me3 rice transcriptional regulation

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Microwave-assisted pyrolysis of vegetable oil soapstock:Comparative study of rapeseed,sunflower,corn,soybean,rice,and peanut oil soapstock

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International Journal of Agricultural and Biological Engineering 2019年第6期12卷 202-208页

作者： Yunpu Wang Shumei Zhang Qiuhao Wu Dengle Duan Yuhuan Liu Roger Ruan Guiming Fu Leilei Dai Lin Jiang Zhenting Yu Zihong Zeng xiaojie tian Xiuhua Yang State Key Laboratory of Food Science and Technology Nanchang UniversityNanchang 330047China Engineering Research Center for Biomass Conversion Ministry of EducationNanchang UniversityNanchang 330047China Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota St.PaulMN 55108USA Department of Biological Systems Engineering Washington State UniversityRichlandWA 99354USA

In this study,the effects of catalytic temperature and the type of soapstock on products from microwave-assisted pyrolysis were ***-5 was used as the catalyst to study the pyrolysis of six different soapstocks at 200℃,300℃,and 400℃ catalytic *** showed that the bio-oil yields initially increased and then decreased with the increase in catalytic *** the catalytic temperature was 300℃,the bio-oil reached up to the maximum value(65.8 wt.%).Findings indicated that the composition of bio-oil was related to the degree of unsaturation of fatty acids sodium in the *** the case of saturated fatty acid sodium,a series of alkanes was formed,whereas the pyrolysis of monounsaturated fatty acid sodium resulted mainly in cycloalkanes,the cycloalkenes obtained from bio-oil was produced by polyunsaturated fatty acid sodium.

关键词： microwave pyrolysis vegetable oil soapstock HZSM-5 bio-oil

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上海大型公共绿地的未来

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景观设计学（中英文） 2017年第6期5卷 98-113页

作者：张斗 Sasaki上海办公室

大量的人口和有限的土地对上海未来的发展提出了前所未有的挑战。填海造陆工程以牺牲栖息地为代价创造了更多的土地。然而这些吹填出来的土地自然条件恶劣,在成陆多年后仍不适宜居住。无论是海岸带还是新填出的土地都有待长期的恢复和... 详细信息

大量的人口和有限的土地对上海未来的发展提出了前所未有的挑战。填海造陆工程以牺牲栖息地为代价创造了更多的土地。然而这些吹填出来的土地自然条件恶劣,在成陆多年后仍不适宜居住。无论是海岸带还是新填出的土地都有待长期的恢复和修复。为了控制城市无限蔓延并保护农业用地,对建成区域进行城市更新在近些年来备受重视。这类项目受到当前需求、历史保护、现状基础设施、用地性质、政治等多重因素的影响,需要全面整合设计才能取得成功。在公共项目中,公众参与的缺乏往往导致政治诉求变成决定设计的主导因素。这可能致使设计偏离最佳的专业解决方案。那么,景观设计师如何能够影响决策过程以使其更加合理？

关键词：海岸保护自然演替修复城市更新绿色基础设施公众意识

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网站拓扑结构提取技术的研究与应用

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计算机工程 2006年第1期32卷 157-159,179页

作者：何玉宝刘正捷田晓杰大连海事大学计算机学院欧盟可用性中国中心大连116026

大多数的网站体积庞大、结构复杂,因此要考察与网站相关的问题比较有效的方法是进行网站信息可视化。而可视化的一个关键问题就是如何对网站拓扑结构等一些基础数据进行提取和表示。该文提出了一种网站拓扑结构及基本信息的提取方法。... 详细信息

大多数的网站体积庞大、结构复杂,因此要考察与网站相关的问题比较有效的方法是进行网站信息可视化。而可视化的一个关键问题就是如何对网站拓扑结构等一些基础数据进行提取和表示。该文提出了一种网站拓扑结构及基本信息的提取方法。其中包括提取过程中一些复杂问题的解决方案、关键技术以及数据的表示和存储结构等。介绍了基于这种方法所开发的一个网站拓扑结构自动提取工具,以及利用该工具所进行的应用试验。

关键词：网站拓扑结构数据提取十字链表

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