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QTL mapping and transcriptome analysis identify candidate genes influencing water–nitrogen interaction in maize

The Crop Journal 2023年第6期11卷 1872-1883页

作者： Kunhui He Yakun Zhang Wei Ren pengyun chen Jianchao Liu Guohua Mi Fanjun chen Qingchun Pan State Key Laboratory of Nutrient Use and Management College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China College of Agronomy Northwest A&F UniversityYangling 712100ShaanxiChina Sanya Institute of China Agricultural University Sanya 572000HainanChina

Water and nitrogen fertilization are the key factors limiting maize *** genetic basis of interactions between maize genotype,water,and nitrogen is unclear.A recombinant inbred line(RIL)maize population was evaluated for seven yield and five agronomic traits under four water and nitrogen conditions:water stress and low nitrogen,water stress and high nitrogen,well-watered and low nitrogen,and well-watered and high *** eight,six,and six traits varied in response to genotype–water interactions,genotype–nitrogen interactions,and genotype–water–nitrogen *** a linkage map consisting of 896 single-nucleotide polymorphism markers and multipleenvironmental quantitative-trait locus(QTL)mapping,we identified 31 QTL,including 12 for genotype–water–nitrogen interaction,across the four treatments.A set of 8060 genes were differentially expressed among *** genetic analysis,gene co-expression,and functional annotation revealed two candidate genes controlling genotype–water–nitrogen interactions,affecting both leaf width and grain *** involved in abscisic acid biosynthesis and bZIP,NAC,and WRKY transcription factors participated in maize response to water and nitrogen *** results represent a step toward understanding the genetic regulatory network of maize that responds to water and nitrogen stress and provide a theoretical basis for the genetic improvement of both water-and nitrogen-use efficiency.

关键词： Quantitative trait loci Water Nitrogen Interaction Maize

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GhAP1-D3 positively regulates flowering time and early maturity with no yield and fiber quality penalties in upland cotton

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Journal of Integrative Plant Biology 2023年第4期65卷 985-1002页

作者： Caixiang Wang Juanjuan Liu Xiaoyu Xie Ji Wang Qi Ma pengyun chen Delong Yang Xiongfeng Ma Fushun Hao Junji Su State Key Laboratory of Aridland Crop Science College of Life Science and TechnologyGansu Agricultural UniversityLanzhou 730070China State Key Laboratory of Cotton Biology College of Life ScienceHenan UniversityKaifeng 475004China Cotton Research Institute Xinjiang Academy of Agricultural and Reclamation ScienceShihezi 832000China State Key Laboratory of Cotton Biology Institute of Cotton Research of Chinese Academy of Agricultural SciencesAnyang 455000China

Flowering time(FTi)is a major factor determining how quickly cotton plants reach *** maturity greatly affects lint yield and fiber quality and is crucial for mechanical harvesting of cotton in northwestern ***,few quantitative trait loci(QTLs)or genes regulating early maturity have been reported in cotton,and the underlying regulatory mechanisms are largely *** this study,we characterized 152,68,and 101 loci that were significantly associated with the three key early maturity traits—FTi,flower and boll period(FBP)and whole growth period(WGP),respectively,via four genome-wide association study methods in upland cotton(Gossypium hirsutum).We focused on one major early maturity-related genomic region containing three single nucleotide polymorphisms on chromosome D03,and determined that GhAP1-D3,a gene homologous to Arabidopsis thaliana APETALA1(AP1),is the causal locus in this *** plants overexpressing GhAP1-D3 showed significantly early flowering and early maturity without penalties for yield and fiber quality compared to wild-type(WT)*** contrast,the mutant lines of GhAP1-D3 generated by genome editing displayed markedly later flowering than the ***1-D3 interacted with GhSOC1(SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1),a pivotal regulator of FTi,both in vitro and in *** in GhAP1-D3 transcript levels clearly affected the expression of multiple key flowering regulatory ***,DNA hypomethylation and high levels of H3K9ac affected strong expression of GhAP1-D3 in early-maturing cotton *** propose that epigenetic modifications modulate GhAP1-D3 expression to positively regulate FTi in cotton through interaction of the encoded GhAP1 with GhSOC1 and affecting the transcription of multiple flowering-related *** findings may also lay a foundation for breeding early-maturing cotton varieties in the future.

关键词： upland cotton early maturity genome‐wide association studies QTL AP1 flowering time

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Identification of candidate genes for early-maturity traits by combining BSA-seq and QTL mapping in upland cotton(Gossypium hirsutum L.)

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Journal of Integrative Agriculture 2024年第10期23卷 3472-3486页

作者： Liang Ma Tingli Hu Meng Kang Xiaokang Fu pengyun chen Fei Wei Hongliang Jian Xiaoyan Lü Meng Zhang Yonglin Yang State Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research Chinese Academy ofAgricultural SciencesAnyang 455000China School of Agriculture Henan Institute of Science and TechnologyXinxiang 453003China Shihezi Academy of Agricultural Sciences Shihezi 832099China

Cotton breeding for the development of early-maturing varieties is an effective way to improve multiple cropping indexes and alleviate the conflict between grains and cotton in the cultivated fields in *** the present study,we aimed to identify upland cotton quantitative trait loci(QTLs)and candidate genes related to early-maturity traits,including whole growth period(WGP),flowering timing(FT),node of the first fruiting branch(NFFB),height of the node of the first fruiting branch(HNFFB),and plant height(PH).An early-maturing variety,CCRI50,and a latematuring variety,Guoxinmian 11,were crossed to obtain biparental *** populations were used to map QTLs for the early-maturity traits for two years(2020 and 2021).With BSA-seq analysis based on the data of population 2020,the candidate regions related to early maturity were found to be located on chromosome *** then developed 22 polymorphic insertions or deletions(InDel)markers to further narrow down the candidate regions,resulting in the detection of five and four QTLs in the 2020 and 2021 populations,*** to the results of QTL mapping,two candidate regions(InDel_G286-InDel_G144 and InDel_G24-InDel_G43)were *** these regions,three genes(GH_D03G0451,GH_D03G0649,and GH_D03G1180)have nonsynonymous mutations in their exons and one gene(GH_D03G0450)has SNP variations in the upstream sequence between CCRI50 and Guoxinmian *** four genes also showed dominant expression in the floral *** expression levels of GH_D03G0451,GH_D03G0649 and GH_D03G1180 were significantly higher in CCRI50 than in Guoxinmian 11 during the bud differentiation stages,while GH_D03G0450 showed the opposite *** functional verification of GH_D03G0451 indicated that the GH_D03G0451-silenced plants showed a delay in the flowering *** results suggest that these are the candidate genes for cotton early maturity,and they may be used for breeding early-maturity cotton varieties.

关键词： cotton genomics early-maturity traits BSA-seq QTL mapping molecular breeding

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Molecular characterization,expression patterns,and subcellular localization of a classical and a novel nonclassical MHC class Iαmolecules from Japanese eel Anguilla japonica

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Aquaculture and Fisheries 2023年第2期8卷 108-123页

作者： Jianjun Feng Xinwei Peng Peng Lin Yilei Wang Ziping Zhang Yuankai Xu pengyun chen Jingying Wu Engineer Research Center of Eel Modern Industry Technology Ministry of EducationXiamen361021China College of Fisheries Jimei UniversityXiamen361021China College of Animal Science Fujian Agriculture and Forestry UniversityFuzhou350002China Ningbo Institute of Oceanography Ningbo315832China

Major histocompatibility complex(MHC)molecules play a critical role in the immune response of vertebrate animals by presenting foreign antigens to T *** this study,we first cloned and identified a classical and a novel nonclassical MHC Iαmolecules from Japanese eel(Anguilla japonica),named as AjMHC I-UBA and AjMHC I-L,*** full-length cDNA of AjMHC I-UBA contains an open reading frame(ORF)of 1047 bp encoding a predicted protein of 348 amino acids,while AjMHC I-L 1089 bp encodes 362 amino *** multiple alignment of the amino acid sequence showed that AjMHC I-UBA and AjMHC I-L consist of an N-terminal MHC I superfamily domain withinα1 andα2 helices,an IgC-MHC Iα3 domain,and a transmembrane region close to the C-terminal,which are similar to other fish and mammal *** polymorphism analysis showed that eight different major alleles of AjMHC I-UBA,named as AjMHC I-UBA*0101~1001,were identified from six Japanese eel ***,a distinguishing signature of the nonclassical L-lineage genes specific motif“HINMTL”,including an N-glycosylation site(NXS/T),was present in theα3 domain of AjMHC I-L *** the predicted three-dimensional structures of AjMHC I-UBA and AjMHC I-L are similar to that of human MHC Iα,phylogenetic analysis showed that these two protein molecules belong to classical MHC I UBA gene of U-lineage and nonclassical MHC I gene of L-lineage,*** real-time polymerase chain reaction(qRT-PCR)analysis revealed that the highest expression of AjMHC I-UBA and AjMHC I-L was found in the intestine and the expression level of AjMHC I-UBA in all of the examined tissues was significantly higher than that of AjMHC *** expressions of AjMHC I-UBA and AjMHC I-L in liver,kidney and spleen were significantly induced following injection with the viral mimic poly I:C,LPS,and Aeromonas hydrophila *** vitro,the AjMHC I-UBA and AjMHC I-L transcripts of Japanese eel liver cells were si

关键词： Anguilla japonica MHC Iα mRNA expression Subcelluar localization

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IKKεpositively regulates NF-κB,MAPK,and IRF3-mediated type Ⅰ IFN signaling pathways in Japanese eel(Anguilla japonica)

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Aquaculture and Fisheries 2024年第6期9卷 908-920页

作者： Jianjun Feng Xinwei Peng Peng Lin Yilei Wang Ziping Zhang Yuankai Xu Pengfei Zou Xiaojian Lai pengyun chen Tianyu Wang Key Laboratory of Healthy Mariculture for the East China Sea Ministry of Agriculture and Rural AffairsOrnamental Aquarium Engineering Research Centre in University of Fujian ProvinceFisheries CollegeJimei UniversityXiamen361021China Engineer Research Center of Eel Modern Industry Technology Ministry of Education in University of Fujian ProvinceFisheries CollegeJimei UniversityXiamen361021China College of Animal Science Fujian Agriculture and Forestry UniversityFuzhou350002China Ningbo Institute of Oceanography Ningbo315832China

IKKε is an IκB kinase participating in the control of NF-κB and type Ⅰ IFN signal pathways in ***,the function of IKKε in regulating immune response is largely unknown in ***,an IKKε homologue named AjIKKε was characterized in Japanese eel(Anguilla japonica).AjIKKε has an N-terminal kinase domain,a ubiquitin-like domain,and a coiled coil-containing domain(CC),which is conserved and similar to its counterpart in *** analysis showed that AjIKKεcould be up-regulated in kidney,spleen,and particularly in liver under the stimulation of poly Ⅰ:C,LPS,and Aeromonas hydrophila *** vitro,the mRNA levels of AjIKKεwere significantly provoked in eel liver cells stimulated by LPS and poly I:C,or the different concentrations of *** overexpression of AjIKKε could not only induce a significantly higher level of promoter activity of human NF-κB,AP-1,and IFN-β in a dose-dependent manner but also up-regulate the activation of promoters of Japanese eel cRel,AP1,IL6,IFN4,IRF3,and IRF7 in HEK293 *** studies showed that after AjIKKε was knocked down,the expression levels of IL1,IL6,TNFα,c-Jun,IFN2,IFN3,MX1,MX2,and IRF3 genes were significantly down-regulated in liver,spleen,and kidney of Japanese *** addition,the mutants of AjIKKε-K39A,AjIKKε-S174A,and AjIKKε-ΔCC failed to activate Japanese eel IFN4,IRF3 and human IFN-β promoters in HEK293 ***,these results suggest that AjIKKεmay function as a positive regulator of NF-κB,MAPK,and IRF3-mediated type Ⅰ IFN signaling pathways related to immune response evoked by bacterial and viral infection.

关键词： Anguilla japonica IKKε TypeⅠIFN IRF3 NF-κB MAPK

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LnCu_(3)(OH)_(6)Cl_(3) (Ln=Gd, Tb, Dy): Heavy lanthanides on spin-1/2 kagome magnets

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Chinese Physics B 2021年第10期30卷 245-251页

作者： Ying Fu Lianglong Huang Xuefeng Zhou Jian chen Xinyuan Zhang pengyun chen Shanmin Wang Cai Liu Dapeng Yu Hai-Feng Li Le Wang Jia-Wei Mei Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoAvenida da UniversidadeTaipaMacao SAR 999078China Shenzhen Institute for Quantum Science and Engineering and Department of PhysicsSouthern University of Science and TechnologyShenzhen 518055China Department of Physics Southern University of Science and TechnologyShenzhen 518055China Institute of Functional Crystals Tianjin University of TechnologyTianjin 300384China Institute of Resources Utilization and Rare-earth Development Guangdong Academy of SciencesGuangzhou 51065China Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices Southern University of Science and TechnologyShenzhen 518055China

The spin-1/2 kagome antiferromagnets are key prototype materials for studying frustrated *** isostructural kagome antiferromagnets LnCu_(3)(OH)_(6)Cl_(3)(Ln=Gd,Tb,Dy)have been successfully synthesized by the hydrothermal ***_(3)(OH)_(6)Cl_(3) adopts space group P3m1 and features the layered Cu-kagome lattice with lanthanide Ln3+cations sitting at the center of the *** heavy lanthanides(Ln=Gd,Tb,Dy)in LnCu_(3)(OH)_(6)Cl_(3) provide a large effective magnetic moment and ferromagnetic-like spin correlations compared to light-lanthanides(Nd,Sm,Eu)analogues,Cu-kagome holds an antiferromagnetically ordered state at around 17 K like YCu_(3)(OH)_(6)Cl_(3).

关键词： kagome lattice hydrothermal method frustrated magnetism spin-1/2

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Fast Extraction of Local Underwater Terrain Features for Underwater Terrain-Aided Navigation

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Journal of Marine Science and Application 2019年第3期18卷 334-342页

作者： pengyun chen Pengfei Zhang Jianlong Chang Peng Shen College of Mechatronic Engineering North University of ChinaTaiyuan 030051China National Deep Sea Center Qingdao 266237China

Terrain matching accuracy and real-time performance are affected by local underwater terrain features and structure of matching surface. To solve the extraction problem of local terrain features for underwater terrain-aided navigation (UTAN), real-time data model and selection method of beams are proposed. Then, an improved structure of terrain storage is constructed, and a fast interpolation strategy based on index is proposed, which can greatly improve the terrain interpolation–reconstruction speed. Finally, for the influences of tide, an elimination method of reference depth deviation is proposed, which can reduce the reference depth errors caused by tidal changes. As the simulation test shows, the proposed method can meet the requirements of real-time performance and effectiveness. Furthermore, the extraction time is considerably reduced, which makes the method suitable for the extraction of local terrain features for UTAN.

关键词： Underwater terrain modeling Beam selection Mixing resolution Terrain storage model Index extraction

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基于极大似然估计的AUV水下地形匹配定位方法

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机器人 2012年第5期34卷 559-565页

作者：陈小龙庞永杰李晔陈鹏云哈尔滨工程大学水下机器人技术重点实验室黑龙江哈尔滨150001

针对自主式水下机器人(AUV)长时间水下作业时精确定位的需求,以多波束测深仪作为水下地形测量手段,利用极大似然法则对地形特征进行相关性分析,提出了一种基于极大似然估计的水下地形匹配定位方法.针对平坦地形区域似然函数出现的伪波... 详细信息

针对自主式水下机器人(AUV)长时间水下作业时精确定位的需求,以多波束测深仪作为水下地形测量手段,利用极大似然法则对地形特征进行相关性分析,提出了一种基于极大似然估计的水下地形匹配定位方法.针对平坦地形区域似然函数出现的伪波峰的影响,引入费希尔判据准则对其进行约束,有效地剔除了伪峰值点,增强了对地形平坦区域地形特征的识别率.基于某电子海图数据和多波束测深仪海上试验数据的仿真结果,验证了该方法的有效性和实用性.

关键词：多波束测深仪极大似然估计地形匹配费希尔判据

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水电站地上式主变压器室散热分析及处理措施

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人民长江 2016年第17期47卷 60-63页

作者：陈鹏云长江勘测规划设计研究有限责任公司湖北武汉430010

水电站主变压器在运行过程中,如果不能及时散热,一旦环境温度超过了工作温度,则将对其工作性能产生影响。因此,为了保证主变压器能够安全稳定地运行,根据水电站地上式主变压器室的布置特点,经综合分析考虑,选取了3种夏季通风计算温度和... 详细信息

水电站主变压器在运行过程中,如果不能及时散热,一旦环境温度超过了工作温度,则将对其工作性能产生影响。因此,为了保证主变压器能够安全稳定地运行,根据水电站地上式主变压器室的布置特点,经综合分析考虑,选取了3种夏季通风计算温度和3种容量的主变压器,对其自然通风散热情况进行计算,从而得到了在各种工况下自然通风洞的尺寸,以为水电站地上式主变压器室的通风方案设计提供参考。

关键词：主变压器室散热自然通风机械通风水电站

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基于改进粒子滤波的AUV海底地形辅助定位方法

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智能系统学报 2020年第3期15卷 553-559页

作者：韩月陈鹏云沈鹏太原旅游职业学院现代教育信息中心山西太原030032 中北大学机电工程学院山西太原030051 国家深海基地管理中心山东青岛266237

针对自主式水下无人航行器的地形辅助导航问题,提出一种基于粒子滤波的地形辅助定位方法。为了解决粒子滤波的“粒子贫化”问题,引入了辅助采样,提出一种基于辅助采样粒子滤波的海底地形辅助定位方法,减小了由于重采样带来的粒子多样性... 详细信息

针对自主式水下无人航行器的地形辅助导航问题,提出一种基于粒子滤波的地形辅助定位方法。为了解决粒子滤波的“粒子贫化”问题,引入了辅助采样,提出一种基于辅助采样粒子滤波的海底地形辅助定位方法,减小了由于重采样带来的粒子多样性的损失。基于半物理测试平台的仿真实验表明:本文所提出方法的精度较高,可适应不同地形特征下的地形辅助定位,可满足水下无人航行器(autonomous underwater vehicle,AUV)水下导航定位的需求。

关键词：水下无人航行器水下环境多波束测深地形辅助定位 Bayesian估计粒子滤波辅助采样半物理仿真

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