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Horticulture Research 2015年第1期2卷 183-192页

作者： guang-long wang Fei Xiong Feng Que Zhi-Sheng Xu Feng wang Ai-Sheng Xiong State Key Laboratory of Crop Genetics and Germplasm Enhancement College of HorticultureNanjing Agricultural UniversityNanjing 210095China Key Laboratories of Crop Genetics and Physiology of the Jiangsu Province and Plant Functional Genomics of the Ministry of Education Yangzhou UniversityYangzhou 225009China

Gibberellins(GAs)are considered potentially important regulators of cell elongation and expansion in *** undergoes significant alteration in organ size during its growth and ***,the molecular mechanisms underlying gibberellin accumulation and perception during carrot growth and development remain *** this study,five stages of carrot growth and development were investigated using morphological and anatomical structural *** levels in leaf,petiole,and taproot tissues were also investigated for all five *** levels in the roots initially increased and then decreased,but these levels were lower than those in the petioles and *** involved in gibberellin biosynthesis and signaling were identified from the carrotDB,and their expression was *** of the genes were evidently responsive to carrot growth and development,and some of them showed tissue-specific *** results suggested that gibberellin level may play a vital role in carrot elongation and *** relative transcription levels of gibberellin pathway-related genes may be the main cause of the different bioactive GAs levels,thus exerting influences on gibberellin perception and *** growth and development may be regulated by modification of the genes involved in gibberellin biosynthesis,catabolism,and perception.

关键词： insight roots initially

Ferromagnetism and magnetostructural coupling in V-doped MnNiGe alloys

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Chinese Physics B 2018年第10期27卷 565-569页

作者： Hui Yang Jun Liu Chao Li guang-long wang Yuan-Yuan Gong Feng Xu MIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China

The magnetostructural coupling between magnetic and structure transitions plays an important role in the multifunctional applications of magentocaloric materials. In this work, ferromagnetism and magnetostructural transformation are achieved in nonmagnetic V-doped MnNiGe alloys. With simultaneously reducing the transformation temperature and converting antiferromagnetic martensite to ferromagnetic state, the magnetostructural transformation between ferromagnetic orthorhombic phase and paramagnetic hexagonal phase is established in a temperature region as large as 130 K. The magnetic-field-induced magnetostructural transformation is accompanied by considerable magnetocaloric effect.

关键词： magnetostructural transformation ferromagnetism magnetocaloric effect

Hausdorff Measure of Space Anisotropic Gaussian Processes with Non-stationary Increments

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Acta Mathematicae Applicatae Sinica 2025年第1期41卷 114-132页

作者： Jun wang Zhen-long CHEN Wei-jie YUAN guang-jun SHEN School of Mathematics and Physics Anhui Polytechnic UniversityWuhu 241000China School of Statistics and Mathematics Zhejiang Gongshang UniversityHangzhou 310018China Department of Mathematics Anhui Normal UniversityWuhu 241000China

Let X={X(t),t∈R+} be a centered space anisotropic Gaussian process values in R^(d) with non-stationary increments,whose components are independent but may not be identically *** certain conditions,then almost surely c_(1)≤ϕ-m(X([0,1]))≤c_(2),where ϕ denotes the exact Hausdorff measure associated with function ϕ(s)=s1/α_(k)+Σ_(i=1)k(1-αi/αk)log log 1/s for some 1≤k≤d,(α_(1),…,α_(d))∈(0,1]^(d).We also obtain the exact Hausdorff measure of the graph of X on[0,1].

关键词： Hausdorff measure self-similar Gaussian processes non-stationary increment Lamperti theorem

The genome sequence of celery(Apium graveolens L.),an important leaf vegetable crop rich in apigenin in the Apiaceae family

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Horticulture Research 2020年第1期7卷 2648-2657页

作者： Meng-Yao Li Kai Feng Xi-Lin Hou Qian Jiang Zhi-Sheng Xu guang-long wang Jie-Xia Liu Feng wang Ai-Sheng Xiong State Key Laboratory of Crop Genetics and Germplasm Enhancement Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East ChinaCollege of HorticultureNanjing Agricultural University1 WeigangNanjing 210095China

Celery(Apium graveolens L.)is a vegetable crop in the Apiaceae family that is widely cultivated and consumed because it contains necessary nutrients and multiple biologically active ingredients,such as apigenin and ***,we report the genome sequence of celery based on the use of HiSeq 2000 sequencing technology to obtain 600.8 Gb of data,achieving~189-fold genome coverage,from 68 sequencing libraries with different insert sizes ranging from 180 bp to 10 kb in *** assembled genome has a total sequence length of 2.21 Gb and consists of 34,277 predicted *** DNA sequences represent 68.88%of the genome sequences,and LTR retrotransposons are the main components of the repetitive *** analysis showed that a recent whole-genome duplication event may have occurred in celery,which could have contributed to its large genome *** genome sequence of celery allowed us to identify agronomically important genes involved in disease resistance,flavonoid biosynthesis,terpenoid metabolism,and other important cellular *** comparative analysis of apigenin biosynthesis genes among species might explain the high apigenin content of *** whole-genome sequences of celery have been deposited at CeleryDB(http://***/celerydb).The availability of the celery genome data advances our knowledge of the genetic evolution of celery and will contribute to further biological research and breeding in celery as well as other Apiaceae plants.

关键词： metabolism breeding sizes

Advances in research on the carrot,an important root vegetable in the Apiaceae family

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Horticulture Research 2019年第1期6卷 860-874页

作者： Feng Que Xi-Lin Hou guang-long wang Zhi-Sheng Xu Guo-Fei Tan Tong Li Ya-Hui wang Ahmed Khadr Ai-Sheng Xiong State Key Laboratory of Crop Genetics and Germplasm Enhancement Ministry of Agriculture and Rural AffairsKey Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East ChinaCollege of HorticultureNanjing Agricultural University1 Weigang210095 NanjingChina School of Life Science and Food Engineering Huaiyin Institute of Technology223003 HuaianChina Faculty of Agriculture Damanhour UniversityDamanhourEgypt

Carrots(Daucus carota L.),among the most important root vegetables in the Apiaceae family,are cultivated *** storage root is widely utilized due to its richness in carotenoids,anthocyanins,dietary fiber,vitamins and other *** extracts,which serve as sources of antioxidants,have important functions in preventing many *** biosynthesis,metabolism,and medicinal properties of carotenoids in carrots have been widely *** on hormone regulation in the growth and development of carrots has also been widely ***,with the development of high-throughput sequencing technology,many efficient tools have been adopted in carrot research.A large amount of sequence data has been produced and applied to improve carrot breeding.A genome editing system based on CRISPR/Cas9 was also constructed for carrot *** this review,we will briefly summarize the origins,genetic breeding,resistance breeding,genome editing,omics research,hormone regulation,and nutritional composition of *** about future research work on carrots are also briefly provided.

关键词： carrot breeding metabolism

Telomere-to-telomere carrot (Daucus carota) genome assembly reveals carotenoid characteristics

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Horticulture Research 2023年第7期10卷 112-124页

作者： Ya-Hui wang Pei-Zhuo Liu Hui Liu Rong-Rong Zhang Yi Liang Zhi-Sheng Xu Xiao-Jie Li Qing Luo Guo-Fei Tan guang-long wang Ai-Sheng Xiong State Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East ChinaCollege of HorticultureNanjing Agricultural UniversityNanjingJiangsu 210095China Institute of Horticulture Guizhou Academy of Agricultural SciencesGuiyangGuizhou 550025China School of Life Science and Food Engineering Huaiyin Institute of TechnologyHuaianJiangsu 223003China Beijing Vegetable Research Center Beijing Academy of Agriculture and Forestry SciencesKey Laboratory of Biology and Genetic Improvement of Horticultural Crops in North ChinaBeijing 100097China

Carrot(Daucus carota)is an Apiaceae plant with multi-colored fleshy roots that provides a model system for carotenoid *** this study,we assembled a 430.40 Mb high-quality gapless genome to the telomere-to-telomere(T2T)level of“Kurodagosun”*** total,36268 genes were identified and 34961 of them were functionally *** proportion of repeat sequences in the genome was 55.3%,mainly long terminal *** on the coverage of the repeats,14 telomeres and 9 centromeric regions on the chromosomes were predicted.A phylogenetic analysis showed that carrots evolved early in the family *** on the T2T genome,we reconstructed the carotenoid metabolic pathway and identified the structural genes that regulate carotenoid *** the 65 genes that were screened,9 were newly ***,some gene sequences overlapped with transposons,suggesting replication and functional differentiation of carotenoid-related genes during carrot *** that some gene copies were barely expressed during development,they might be functionally *** of 24 cytochrome P450 genes associated with carotenoid biosynthesis revealed the tandem or proximal duplication resulting in expansion of CYP gene *** results provided molecular information for carrot carotenoid accumulation and contributed to a new genetic resource.

关键词： carrot sequences characteristics

AgMYB1,an R2R3-MYB factor,plays a role in anthocyanin production and enhancement of antioxidant capacity in celery

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Vegetable Research 2021年第1期1卷 2-13页

作者： Kai Feng Guo-Ming Xing Jie-Xia Liu Hao wang Guo-Fei Tan guang-long wang Zhi-Sheng Xu Ai-Sheng Xiong State Key Laboratory of Crop Genetics and Germplasm Enhancement Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East ChinaCollege of HorticultureNanjing Agricultural University1 WeigangNanjing 210095China Collaborative Innovation Center for Improving Quality and Increase Profits of Protected Vegetables in Shanxi Shanxi Agricultural UniversityTaigu 030801China Institute of Horticulture Guizhou Academy of Agricultural SciencesGuiyang 550006China School of Life Science and Food Engineering Huaiyin Institute of TechnologyHuaian 223001China College of Horticulture and Plant Protection Yangzhou UniversityYangzhou 225009China

Celery is rich in nutrients and cultivated *** are natural plant pigments with high antioxidant capabilities in the human *** accumulation of anthocyanins in celery results in the purple skin color of ***,an R2R3-MYB transcription factor(TFs),AgMYB1,was cloned from purple-skin *** analysis revealed that AgMYB1 belongs to the anthocyanin *** alignment showed that AgMYB1 contains multiple anthocyanin-related *** with the activating role in anthocyanin production,AgMYB1 showed higher transcriptions in purple celery compared with non-purple *** expression of AgMYB1 in tobacco leaves promoted the accumulation of anthocyanins and produced red pigments in *** expression of AgMYB1 in Arabidopsis activates anthocyanin production and generates dark-purple *** enhancement of anthocyanin biosynthetic genes transcripts and glycosylation capacities in transgenic Arabidopsis verified the activating roles of AgMYB1 at the gene and protein level,*** antioxidant capacity of transgenic Arabidopsis was also increased compared to wild type ***,yeast two-hybrid assay proved that AgMYB1 interacted with bHLH TFs to regulate anthocyanin *** results show that the overexpression of single R2R3-MYB gene,AgMYB1,without coexpression of other TFs,can improve anthocyanin production and antioxidant capacity in transgenic *** study presents new information for anthocyanin regulatory mechanisms in purple celery and provides a strategy for cultivating plants with high levels of anthocyanins.

关键词： anthocyanin purple branch

Sporadic E responds to the 2022 Tonga volcano eruptions recorded by the Meridian Project

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Earth and Planetary Physics 2025年第1期9卷 20-28页

作者： YangYi Sun Tao Yu Jin wang Chi long School of Geophysics and Geomatics China University of Geosciences(Wuhan)Wuhan 430047China School of Physics and Electronic Science Guizhou Normal UniversityGuizhou 550001China

In this study,ionosonde observations over Fuke(19.5°N,109.1°E),Wuhan(30.5°N,114.4°E),and Mohe(53.5°N,122.3°E)were analyzed to demonstrate the responses of the sporadic E()to the severe atmospheric disturbances caused by the Tonga volcanic eruptions on January 15,*** most prominent signature was the disappearance of the layer after~10:00 UT over Wuhan and Fuke,which was attributed to the vertical drift caused by the *** occurred intermittently after 13:00 UT following the arrival of the tropospheric Lamb *** examine the causal mechanism for the intermittence,we also included data of horizontal winds in the mesosphere and lower thermosphere region recorded by the meteor radars at Wuhan and Mohe in this *** wind disturbances with periods of~20 hours contributed to the formation of the layer in the nighttime on January 15.

关键词： sporadic E Tonga eruptions neutral wind disturbances

Safe flight corridor constrained sequential convex programming for efficient trajectory generation of fixed-wing UAVs

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Chinese Journal of Aeronautics 2025年第1期38卷 537-550页

作者： Jing SUN guangtong XU Zhu wang Teng long Jingliang SUN School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Huzhou Institute Zhejiang UniversityHuzhou 313000China Department of Automation North China Electric Power University(Baoding)Baoding 071003China

Generating dynamically feasible trajectory for fixed-wing Unmanned Aerial Vehicles(UAVs)in dense obstacle environments remains computationally *** paper proposes a Safe Flight Corridor constrained Sequential Convex Programming(SFC-SCP)to improve the computation efficiency and reliability of trajectory ***-SCP combines the front-end convex polyhedron SFC construction and back-end SCP-based trajectory optimization.A Sparse A^(*)Search(SAS)driven SFC construction method is designed to efficiently generate polyhedron SFC according to the geometric relation among obstacles and collision-free *** transforming the nonconvex obstacle-avoidance constraints to linear inequality constraints,SFC can mitigate infeasibility of trajectory planning and reduce computation ***,SCP casts the nonlinear trajectory optimization subject to SFC into convex programming subproblems to decrease the problem *** addition,a convex optimizer based on interior point method is customized,where the search direction is calculated via successive elimination to further improve *** experiments on dense obstacle scenarios show that SFC-SCP can generate dynamically feasible safe trajectory *** studies with state-of-the-art SCP-based methods demonstrate the efficiency and reliability merits of ***,the customized convex optimizer outperforms off-the-shelf optimizers in terms of computation time.

关键词： Fixed-wing unmanned aerial vehicle Efficient trajectory planning Safe flight corridor Sequential convex programming Customized convex optimizer

Bifurcations and Spatiotemporal Patterns in the Diffusive Nutrient-Microor ganism Model

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Acta Mathematicae Applicatae Sinica 2025年第1期41卷 162-178页

作者： Ya-di wang Hai-long YUAN Yan-ling LI School of Arts and Sciences Shaanxi University of Science and TechnologyXi'an 710021China School of Mathematics and Statistics Xi'an Jiaotong UniversityXi'an 710049China School of Mathematics and Information Science Shaanxi Normal UniversityXi'an 710062China

In this paper,the diffusive nutrient-microorganism model subject to Neumann boundary conditions is *** Hopf bifurcations and steady state bifurcations which bifurcate from the positive constant equilibrium of the system are investigated in *** addition,the formulae to determine the direction of Hopf and steady state bifurcations are *** results show the existence of spatially homogeneous/nonhomogeneous periodic orbits and steady state solutions,which indicates the spatiotemporal dynamics of the *** numerical simulations are also presented to support the analytical results.

关键词： nutrient-microorganism model Hopf bifurcation steady state bifurcation simulations