检索结果-南通市图书馆

The chromosome-scale genome assembly of Jasminum sambac var. unifoliatum provides insights into the formation of floral fragrance

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Horticultural Plant Journal 2023年第6期9卷 1131-1148页

作者： chengzhe zhou Chen Zhu Caiyun Tian Siyi Xie Kai Xu Linjie Huang Shengjing Wen Cheng Zhang Zhongxiong Lai Yuling Lin Yuqiong Guo College of Horticulture Fujian Agriculture and Forestry UniversityFuzhouFujian 350002China Institute of Horticultural Biotechnology Fujian Agriculture and Forestry UniversityFuzhouFujian 350002China Tea Industry Research Institute Fujian Agriculture and Forestry UniversityFuzhouFujian 350002China

Jasmine [Jasminum sambac(L.) Ait.], a tropical and subtropical plant emits a sweet, heady fragrance during flower opening. However, the molecular mechanisms underlying this phenomenon remain largely unknown. In the present study, integrated Illumina sequencing, Pacbio sequencing, and high-throughput chromatin conformation capture(Hi-C) scaffolding was used to generate a 495.60 Mb genome assembly of *** var. unifoliatum cultivar ‘Fuzhou Single-petal’(JSU-FSP), with contig N50 of 16.88 Mb;96.23% of the assembly was assigned to 13 pseudochromosomes. The genome harbors 30 989 protein-coding genes, and 49.47% of the assembled sequences are repetitive sequences. The analysis of duplication modes showed that 51% of genes were duplicated through dispersed duplication, and expanded gene families are mainly involved in photosynthesis, which may be responsible for the light-loving characteristic specific to jasmine. Transcriptome analysis revealed that at least 35 structural genes involved in the biosynthesis of volatile terpenes(VTs), volatile phenylpropanoid/benzenoids(VPBs),fatty acid-derived volatiles(FADVs), and indole were highly expressed in the flower-opening stage, both preharvest and postharvest, and are proposed to be important in endowing flower aroma. Additionally, at least 28 heat shock protein(HSP) and 11 β-glucosidase(BGLU) genes may be involved in the formation of floral fragrance. These findings provide insights into the formation of the floral fragrance of jasmine and will promote germplasm utilization for breeding improved jasmine varieties.

关键词： Jasmine Chromosome-scale genome Volatile terpenes Volatile phenylpropanoid/benzenoids

RNA Methylome Reveals the m^(6)A-mediated Regulation of Flavor Metabolites in Tea Leaves under Solar-withering

在线全文

学校读者我要写书评

暂无评论

Genomics, Proteomics & Bioinformatics 2023年第4期21卷 769-787页

作者： Chen Zhu Shuting Zhang chengzhe zhou Caiyun Tian Biying Shi Kai Xu Linjie Huang Yun Sun Yuling Lin Zhongxiong Lai Yuqiong Guo College of Horticulture Fujian Agriculture and Forestry UniversityFuzhou 350002China Institute of Horticultural Biotechnology Fujian Agriculture and Forestry UniversityFuzhou 350002China Tea Industry Research Institute Fujian Agriculture and Forestry UniversityFuzhou 350002China

The epitranscriptomic mark N6-methyladenosine(m^(6)A),which is the predominant internal modification in RNA,is important for plant responses to diverse *** environmental stresses caused by the tea-withering process can greatly influence the accumulation of specialized metabolites and the formation of tea ***,the effects of the m^(6)A-mediated regulatory mechanism on flavor-related metabolic pathways in tea leaves remain relatively *** performed an integrated RNA methylome and transcriptome analysis to explore the m^(6)Amediated regulatory mechanism and its effects on flavonoid and terpenoid metabolism in tea(Camellia sinensis)leaves under solar-withering *** changes in global m^(6)A level in tea leaves were mainly controlled by two m^(6)A erasers(CsALKBH4A and CsALKBH4B)during solar-withering *** methylated peak-associated genes following solarwithering treatments with different shading rates were assigned to terpenoid biosynthesis and spliceosome *** analyses indicated that CsALKBH4-driven RNA demethylation can directly affect the accumulation of volatile terpenoids by mediating the stability and abundance of terpenoid biosynthesis-related transcripts and also indirectly influence the flavonoid,catechin,and theaflavin contents by triggering alternative splicing-mediated *** findings revealed a novel layer of epitranscriptomic gene regulation in tea flavor-related metabolic pathways and established a link between the m^(6)A-mediated regulatory mechanism and the formation of tea flavor under solar-withering conditions.

关键词： Camellia sinensis RNA methylation Epitranscriptome Secondary metabolite Withering

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

高机动二维相扫米波三坐标雷达天线设计

现代雷达 2021年第12期43卷 52-57页

作者：周成哲卓洪丽王浩成都中电锦江信息产业有限公司成都610051

随着隐身技术的发展以及各国隐身战机的出现和使用,对预警探测系统提出了严峻的挑战。米波雷达具有强大的隐身目标探测优势,米波三坐标雷达采用二维有源相控阵体制,利用俯仰数字多波束及超分辨测高算法实现精确测高,能对隐身目标进行三... 详细信息

随着隐身技术的发展以及各国隐身战机的出现和使用,对预警探测系统提出了严峻的挑战。米波雷达具有强大的隐身目标探测优势,米波三坐标雷达采用二维有源相控阵体制,利用俯仰数字多波束及超分辨测高算法实现精确测高,能对隐身目标进行三坐标定位,是探测隐身目标的重要手段。文中设计了一种二维相扫米波三坐标雷达天线,该天线工作在VHF频段相对带宽20%,具有方位/俯仰±45°范围宽角扫描功能,通过数字波束形成技术在方位/俯仰方向形成和差波束以及多波束,以适应雷达探测及测角需要。雷达天线结构尺寸较大,采用振子辐射单元倒伏/展开技术及阵面翻转折叠技术实现雷达天线的高机动运输。

关键词：二维相扫米波三坐标雷达有源相控阵平面阵列宽角扫描

在线全文

学校读者我要写书评

暂无评论

不同风味类型漳平水仙茶的主要品质差异分析

食品科学 2021年第20期42卷 208-215页

作者：翁晶晶周承哲朱晨傅海峰郭玉琼福建农林大学园艺学院福建省高校重点实验室福建福州350002 福建农林大学园艺植物生物工程研究所福建福州350002

以漳平水仙王子和水仙公主的春茶和秋茶为材料,通过感官审评和生化成分测定,结合多元分析方法探究漳平水仙茶风味品质差异的关键因素。结果表明:漳平水仙王子茶滋味浓醇收敛性强,香气呈甜香带桂花香;水仙公主茶滋味醇爽回甘明显,香气呈... 详细信息

以漳平水仙王子和水仙公主的春茶和秋茶为材料,通过感官审评和生化成分测定,结合多元分析方法探究漳平水仙茶风味品质差异的关键因素。结果表明:漳平水仙王子茶滋味浓醇收敛性强,香气呈甜香带桂花香;水仙公主茶滋味醇爽回甘明显,香气呈清香带兰花香。生化成分分析结果表明,咖啡碱、茶多酚和茶红素可作为鉴别二者不同滋味的特征非挥发物;3-蒈烯、乙酸叶醇酯、正己醇、α-蒎烯、D-柠檬烯可作为鉴别二者不同香型的特征挥发物。本研究将进一步为不同风味漳平水仙茶的分类提供客观、准确的理论依据。

关键词：漳平水仙茶非挥发物挥发物聚类分析正交偏最小二乘判别分析

在线全文

学校读者我要写书评

暂无评论

空间转录组学技术及其在植物研究中的应用

生物工程学报 2024年第4期40卷 971-987页

作者：张成周承哲田采云郭玉琼福建农林大学园艺学院福建福州350002 福建农林大学安溪茶学院(数字经济学院) 福建泉州362400 福建农林大学茶产业研究院福建福州350002

植物细胞基因表达的异质性是造成组织功能差异的关键因素。近年来,利用空间转录组测序技术研究植物特定生物学问题已取得较大突破,现已成功应用于细胞发育、细胞鉴定和抗逆应激等方面。为探究空间转录组测序技术在植物中的应用,本文对... 详细信息

植物细胞基因表达的异质性是造成组织功能差异的关键因素。近年来,利用空间转录组测序技术研究植物特定生物学问题已取得较大突破,现已成功应用于细胞发育、细胞鉴定和抗逆应激等方面。为探究空间转录组测序技术在植物中的应用,本文对空间转录组测序技术的发展、在植物中的应用以及未来研究方向3个方面进行综述,系统阐述了空间转录组测序技术的发展进程,重点分析其在植物细胞生长和分化、植物细胞鉴定、抗逆应激的应用中所取得的进展。此外,总结空间转录组测序技术在植物应用中存在的挑战,提出未来在植物研究中的方向以及结合其他组学技术的优势,以期利用空间转录组测序技术解决更多植物领域的科学问题。

关键词：空间转录组植物细胞类型细胞异质性

Green innovation unleashed: Harnessing tungsten-based nanomaterials for catalyzing solar-driven carbon dioxide conversion

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2025年第2期36卷 136-145页

作者： Weidan Meng Yanbo zhou Yi zhou State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and Technology Shanghai Institute of Pollution Control and Ecological Security Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and Technology

Carbon dioxide photocatalytic reduction (CO2-PR) is an efficient method for controlling CO2emissions and generating cleaner energy while mitigating global warming. Tungsten oxides (WxOy) have attracted considerable attention for CO2-PR due to their excellent spectral absorbance. However, comprehensive reviews are lacking on the use of WxOyfor CO2-PR. Therefore, this review provides a detailed summary of t research progress made with WxOy-based catalysts in CO2-PR. It also explains the fundamental principles of CO2-PR and evaluates key performance indicators that affect the activity of WxOy-based photocatalysts,including yield, selectivity, stability, and apparent quantum yield. Additionally, this review explores opportunities for synthesizing high-performance WxOy-based photocatalysts and highlights their potential for the green preparation of C1/C2 products through CO2-PR. These innovative strategies aim to address the challenges and pressures associated with energy and environmental issues, particularly by enhancing artificial photosynthesis efficiency.

关键词： Carbon dioxide photoreduction Mechanism Performance evaluation Selectivity Tungsten-based nanocatalyst

Data-Driven Fault-Tolerant Bipartite Consensus Tracking for Multi-Agent Systems With a Non-Autonomous Leader

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 279-281页

作者： Yan zhou Guanghui Wen Jialing zhou Tao Yang the Department of Systems Science Southeast University the State Key Laboratory of CNS/ATM Beijing Institute of Technology the Beijing Institute of Technology (Zhuhai) the State Key Laboratory of Synthetical Automation for Process Industries Northeastern University

Dear Editor,This letter studies the bipartite consensus tracking problem for heterogeneous multi-agent systems with actuator faults and a leader's unknown time-varying control input. To handle such a problem, the continuous fault-tolerant control protocol via observer design is developed. In addition, it is strictly proved that the multi-agent system driven by the designed controllers can still achieve bipartite consensus tracking after faults occur.

关键词： Time varying control systems

茶树miR398家族的鉴定及在非生物胁迫和激素处理下的表达

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

应用与环境生物学报 2022年第2期28卷 432-439页

作者：陈兰朱晨周承哲詹冬梅谢思艺周雅峰赖钟雄郭玉琼福建农林大学园艺学院福州350002 福建农林大学园艺植物生物工程研究所福州350002 福建农林大学茶学福建省高校重点实验室福州350002

MicroRNA398(miR398)是植物中一类高度保守的miRNA成员,为了解茶树miR398(csn-miR398)家族成员结构特点、进化特性及在非生物胁迫和水杨酸(salicylic acid,SA)处理下的调控作用,对茶树miR398序列进行多重比对和进化特性分析、靶基因预... 详细信息

MicroRNA398(miR398)是植物中一类高度保守的miRNA成员,为了解茶树miR398(csn-miR398)家族成员结构特点、进化特性及在非生物胁迫和水杨酸(salicylic acid,SA)处理下的调控作用,对茶树miR398序列进行多重比对和进化特性分析、靶基因预测、表达模式分析及RNA寡核苷酸(RNA oligonucleotides)过表达验证.结果显示,茶树含有8个miR398家族成员,系统进化树分析显示茶树miR398家族成员均位于其前体3ʹ端臂,并且茶树miR398f/b-1保守性低于茶树miR398-/a/a-3p/b-2/b-3/b-3p.序列多重比对显示茶树miR398序列长度均为21 nt,并且与其他植物相比,茶树miR398序列第2位和第19位核苷酸发生更多突变事件.靶基因预测结果表明,茶树miR398家族成员可能靶向CsCSD1、CsCSD2和CsCCS.过表达csn-miR398a-3p负调控CsCSD1表达.启动子分析显示CsMIR398基因含有光响应、胁迫响应和SA响应元件.荧光定量PCR结果显示多数茶树miR398表达量在干旱胁迫呈下降趋势,低温胁迫呈上升趋势,SA处理下csn-miR398-/a-3p/b-2/b-3p在12 h达到最大值.此外,csn-miR398a-3p仅与CsCSD1在干旱和低温处理下呈相反表达模式.本研究表明miR398家族成员成熟体序列高度保守,并且csn-miR398a-3p和CsCSD1可能在茶树应对干旱和低温胁迫具有重要意义.(图5表2参47)

关键词：茶树 miR398 靶基因非生物胁迫植物激素

Phenyl-extended resorcin[4]arene opens up a new avenue for highly efficient iodine adsorption

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年第2期68卷 405-406页

作者： Jingyu Chen Jiong zhou Department of Chemistry College of SciencesNortheastern UniversityShenyang 110819China

Macrocyclic arenes have become an important tool in supramolecular chemistry due to their special structure,easy functionalization and prominent host–guest *** design and synthesis of macrocyclic arenes with novel structures and excellent performances have been the focus of research in the field of supramolecular chemistry,including calixarenes,pillararenes,biphenarenes,and hybridarenes[1].These macrocyclic arenes have demonstrated significant potential and value in diverse research fields,such as crystal engineering,adsorption and separation,sensing and detection,as well as drug delivery[2].

关键词： properties adsorption iodine