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Most Tibetan weedy barleys originated via recombination between Btr1 and Btr2 in domesticated barley

Plant Communications 2024年第5期5卷 163-175页

作者： Guangqi Gao Luxi Yan Yu Cai Yu Guo Congcong Jiang Qiang he Sarah Tasnim Zongyun Feng jun Liu Jing Zhang Takao Komatsuda Martin Mascher Ping Yang State Key Laboratory of Crop Gene Resources and Breeding/Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization(MARA)/Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China College of Agronomy Sichuan Agricultural UniversityChengdu 611130China Leibniz Institute of Plant Genetics and Crop Plant Research 06466 SeelandGermany Crop Research Institute Shandong Academy of Agricultural SciencesJinan 250100China

Tibetan weedy barleys reside at the edges of qingke(hulless barley)fields in Tibet(Xizang).The spikes of these weedy barleys contain or lack a brittle rachis,with either two-or six-rowed spikes and either hulled or hulless grains at *** the brittle rachis trait of Tibetan weedy barleys is similar to that of wild barley(Hordeum vulgare *** Thell.),these plants share genetic similarity with domesticated *** origin of Tibetan weedy barleys continues to be ***,we show that most Tibetan weedy barleys originated from cross-pollinated hybridization of domesticated barleys,followed by hybrid self-pollination and recombination between Non-brittle rachis 1(btr1)and 2(btr2).We discovered the specific genetic ancestry of these weedy barleys in South Asian *** weedy barleys exhibit lower genetic diversity than wild and Chinese landraces/cultivars and share a close relationship with qingke,genetically differing from typical eastern and western barley *** classified Tibetan weedy barleys into two groups,brittle rachis(BR)and non-brittle rachis(NBR);these traits align with the haplotypes of the btr1 and btr2 *** wild barleys carry haplotype combinations of Btr1 and Btr2,each showing lower proportions in a population,the recombinant haplotype BTR2H8+BTR1H24 is predominant in the BR *** block analysis based on whole-genome sequencing revealed two recombination breakpoints,which are present in 80.6%and 16.8%of BR acces-sions according to marker-assisted *** events between wild and domesticated barley were rarely *** support the notion that Tibetan weedy barleys originated via recom-bination between Btr1 and Btr2 in domesticated barley.

关键词： Tibetan weedy barley agriocrithon de-domestication out-pollination recombination brittle rachis

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CO_2捕集用具有多级孔结构纳米孔炭的制备(英文)

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新型炭材料 2013年第1期28卷 55-60页

作者：唐志红韩卓杨光智赵斌沈淑玲杨俊和上海理工大学材料科学与工程学院上海200093

以模板法结合化学活化法制备了具有分级结构的纳米孔炭。分别利用氮气吸附法和热重分析法考查KOH活化程度对模板法制备中孔炭的孔结构的影响和不同孔结构的多孔炭对CO2的吸附性能。结果表明,KOH活化不仅增加了大量的微孔,而且使得模板... 详细信息

以模板法结合化学活化法制备了具有分级结构的纳米孔炭。分别利用氮气吸附法和热重分析法考查KOH活化程度对模板法制备中孔炭的孔结构的影响和不同孔结构的多孔炭对CO2的吸附性能。结果表明,KOH活化不仅增加了大量的微孔,而且使得模板脱除得到的中孔数量降低。中孔吸附CO2对孔表面的利用率最高,而中孔和微孔的合适配比更有利用综合提高CO2的吸附量。制备的纳米孔炭具有较高的CO2吸附量和较好的循环性能和稳定性。

关键词：纳米孔炭 CO2吸附模板法 KOH活化法

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Functional analysis of flavanone 3-hydroxylase(F3H)from Dendrobium officinale,which confers abiotic stress tolerance

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Horticultural Plant Journal 2023年第2期9卷 356-364页

作者： Can Si Wei Dong Jaime A.Teixeira da Silva Chunmei he Zhenming Yu Mingze Zhang Lei Huang Conghui Zhao Danqi Zeng Chuanmao Li Shengxiang Qiu jun Duan Key laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement&Guangdong Provincial Key laboratory of Applied BotanySouth China Botanical GardenChinese Academy of SciencesGuangzhouGuangdong 510650China University of Chinese Academy of Sciences Beijing 100049China College of Life Science and Technology Xi An Jiao Tong UniversityXi’anShaanxi 710049China Independent Researcher Miki-choKagawa-kenJapan Guangzhou Keneng Cosmetic Scientific Research Co. LtdGuanghzouGuangdong 510650China

Flavonoids are important bioactive components in Dendrobium officinale,a medicinal *** are involved in many biological activities,including protecting plants against biotic and abiotic *** on the key genes related to flavonoid biosynthesis in *** is *** this study,one of the key flavonoid biosynthesis genes,flavanone 3-hydroxylase(F3H),was characterized from *** open reading frame of DoF3H was 1134 bp long and it encoded a 377-amino acid *** DoF3H protein showed considerably high homology with F3H proteins from other plant species and shared a common evolutionary ancestor with other ***3H transcripts were detected in different organs of adult plants and mainly accumulated in flowers,followed by roots,stems and leaves,a pattern that was similar to the content of *** DoF3H protein,which was localized in the cytosol,could convert naringenin to *** mRNA levels of DoF3H were significantly induced by salt and cold ***,the heterologous expression of DoF3H in Escherichia coli conferred it higher tolerance to salt and cold *** results provide insight into the molecular function of DoF3H in the biosynthesis of flavonoids,and provide a new application for improvement of abiotic tolerance in ***.

关键词： Dendrobium officinale Flavanone 3-hydroxylase Dihydrokaempferol Salt stress Cold stress

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Synthesis of β-alkynyl α-amino acids via palladium-catalyzed alkynylation of unactivated C(sp^3)-H bonds

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Science China Chemistry 2015年第8期58卷 1345-1348页

作者： Bo Wang Gang he Gong Chen Department of Chemistry the Pennsylvania State University University Park

β-Di-substituted α-amino acids(AAs) contain adjacent carbon stereogenic centers and pose considerable synthetic challenge. Complementary to the conventional synthesis strategies based on the transformation of existing functional groups, we envisioned these molecules could be quickly accessed via selective functionalization of sp3 hybridized C-H bonds on the side chains of common α-AA precursors. We report a readily applicable method to prepare β-alkynyl α-amino acids via Pd-catalyzed diastereoselective C(sp3)-H alkynylation of common α-amino acids precursors with acetylene bromide.

关键词： α-amino acids C-H functionalization palladium

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Novel DPY19L2 variants in globozoospermic patients and the overcoming this male infertility

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Asian Journal of Andrology 2019年第2期21卷 183-189页

作者： Yong-Liang Shang Fu-Xi Zhu Jie Yan Liang Chen Wen-Hao Tang Sai Xiao Wei-Ke Mo zhi-Guo Zhang Xiao-Jin he Jie Qiao Yun-Xia Cao Wei Li State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Reproductive Medicine Center Department of Obstetrics and GynecologyThe First Affiliated Hospital of Anhui Medical UniversityHefei 230022China Anhui Province Key Laboratory of Reproductive health and Genetics Anhui Medical UniversityHefei 230022China Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijing 100191China Medical Center of Reproductive and Genetics Peking University First HospitalBeijing 100034China Digital China health Technologies Co. Ltd.Beijing 100080China Anhui Provincial Engineering Technology Research Center for Biopreservation and Artificial Organs Hefei 230022China

Globozoospermia has been reported to be a rare but severe causation of male infertility,which results from the failure of acrosome biogenesis and sperm head *** of dpy-19-like 2(DPY19L2)are highly related to globozoospermia,but related investigations have been mainly performed in patients from Western ***,we performed a screening of DPY19L2 variants in a cohort of Chinese globozoospermic patients and found that five of nine patients carried DPY19L2 deletions and the other four patients contained novel DPY19L2 point mutations,as revealed by whole-exome *** 3(P3)contained a heterozygous variant(c.2126+5G>A),P6 contained a homozygous nonsense mutation(c.1720C>T,***574*),P8 contained compound heterozygous variants(c.H82-1184delATCf ***394_Ser395deIinsPhe;c.368A>T,***23Arg),and P9 contained a heterozygous variant(c.H82-1184delATCTTI frameshift).We also reported intracytoplasmic sperm injection(ICSI)outcomes in the related patients,finding that ICSI followed by assisted oocyte activation(AOA)with calcium ionophore achieved high rates of live *** summary,the infertility of these patients results from DPY19L2 dysfunction and can be treated by ICSI together with AOA.

关键词： DPY19L2 globozoospermia male infertility point mutation whole-exome sequencing

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The constitutions of terpenoids and hormones of leaves in red-flesh citrus mutants and their wild types

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Horticultural Plant Journal 2022年第3期8卷 297-310页

作者： Cuihua Liu Min he Juan Xu College of Horticulture Northwest A&F UniversityYangling 712100ShaanxiChina Key Laboratory of Horticultural Plant Biology(Ministry of Education) College of Horticulture and ForestryHuazhong Agricultural UniversityWuhan 430070China

To study the profiles and relationships of terpenoids and phytohormones in leaves of red-flesh citrus,we examined four red-flesh mutants that accumulate lycopene in the fruit and their corresponding wild *** compared their contents of monoterpenoid and sesquiterpenoid volatiles,triterpenoid limonoid aglycones,and tetraterpenoid *** types and concentrations of these terpenoids in the leaves varied among genotypes,and the leaf terpenoid profiles differed between red-fleshmutants and theirwild ***,lycopenewas not detected in citrus leaves of all eight varieties,including the *** to phytohormone accumulation in the leaves,the citrus varieties could be classified into a low-phytohormone group(‘Red Anliu’sweet orange,‘Anliu’sweet orange,and‘Cara Cara’navel orange),a high-phytohormone group(‘Seike’navel orange),and a high-jasmonic acid group(‘Red-flesh Guanxi’pummelo,‘Guanxi’pummelo,‘Chuhong’pummelo,and‘Feicui’pummelo).The contents of terpenoid volatiles were very low in leaves of‘Red-flesh Guanxi’and‘Guanxi’pummelo;therefore,they are ideal materials for verifying the functions of genes related to terpenoid volatiles in overexpression *** volatiles were positively correlated with phytohormones of abscisic acid,jasmonic acid,and salicylic *** together,lycopene was undetected in the leaves of redflesh citrus mutants with abundant lycopene in their juice sacs,which suggested a tissue-specific accumulation pattern of lycopene in citrus red-flesh ***,leaf volatile profiles could be suitable to develop fingerprint chromatograms of citrus resources,since leaf volatile profiles were dominated by several compounds that varied among genotypes in their combinations and concentrations.

关键词： Citrus Carotenoid Terpenoid volatile Limonoid aglycone Hormone Leaf

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An overview on the distributed internal model approach and its applications

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Control Theory and Technology 2024年第3期22卷 345-359页

作者： Youfeng Su he Cai Jie Huang College of Computer and Data Science Fuzhou UniversityFuzhou 350116China School of Automation Science and Engineering South China University of TechnologyGuangzhou 510641China Department of Mechanical and Automation Engineering The Chinese University of Hong KongShatinHong KongChina

The cooperative output regulation problem has been studied by two approaches:the distributed observer(DO)approach and the distributed internal model(DIM)approach,*** of these two approaches has its own merits and ***,we presented an overview on the cooperative output regulation problem by the DO *** paper further surveys the cooperative output regulation problem by the DIM *** first summarize the constructions and the roles of two different versions of the internal models:the distributed p-copy internal model and the distributed canonical internal ***,we describe an integrated framework that combines the DO approach and the DIM *** and variants of the DIM and their applications will also be highlighted.

关键词： Cooperative output regulation Distributed p-copy internal model Distributed canonical internal model Integrated approach

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侵蚀影响下水泥土的力学性质试验研究

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岩土力学 2014年第12期35卷 3377-3384页

作者：刘泉声屈家旺柳志平何军武汉大学土木建筑工程学院武汉430072 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室武汉430071 中建三局投资发展公司武汉430060

港珠澳大桥拱北隧道地处沿海地区,其地下水与海水相连,隧道基底采用粉体喷射搅拌法和高压喷射注浆法等方法进行加固,加固产生的水泥土在海水侵蚀性离子作用下其强度和稳定性会发生变化,从而对工程安全产生影响。根据上述两种施工工艺,... 详细信息

港珠澳大桥拱北隧道地处沿海地区,其地下水与海水相连,隧道基底采用粉体喷射搅拌法和高压喷射注浆法等方法进行加固,加固产生的水泥土在海水侵蚀性离子作用下其强度和稳定性会发生变化,从而对工程安全产生影响。根据上述两种施工工艺,制作内部含侵蚀物质和不含侵蚀物质的两种水泥土试块,配制多种不同浓度的单组分的化学溶液来模拟海水侵蚀环境,将制备的水泥土试块置于侵蚀溶液中进行预定时间的短时(≤28 d)浸泡,通过无侧限抗压试验、电镜扫描以及离子色谱测定,分别得到了单组分侵蚀溶液短时浸泡下水泥土试块无侧限抗压强度、微观结构随侵蚀溶液浓度和侵蚀时间的变化规律,以及侵蚀环境中离子浓度随侵蚀时间的变化规律。基于海水化学成分,配制多种不同浓度的双组分的化学溶液来模拟海水侵蚀环境,将制备的内部含侵蚀物质的淤泥质土水泥土试块置于侵蚀溶液中进行预定时间的长时(≥90 d)浸泡,通过无侧限抗压试验得到了双组分侵蚀溶液长时浸泡下水泥土试块无侧限抗压强度变化规律。试验结果可为临时性及长期性水泥土工程的设计及安全维护提供一定参考依据。

关键词：水泥土侵蚀无侧限抗压强度电镜扫描离子浓度龄期

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基于平行光管的CCD相机标定新方法

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红外与毫米波学报 2007年第6期26卷 465-468页

作者：王志和舒嵘何志平吕刚王建宇中国科学院上海技术物理研究所上海200083

阐述了一种由二维精密转台、平行光管和CCD相机构成的光学实验室相机标定的方法.首先通过Hough变换和最小二乘模板匹配方法得到平行光管十字丝钣孔在CCD相机焦平面上的成像交叉点的位置,然后根据相机畸变模型,由最小二乘回归解算出内方... 详细信息

阐述了一种由二维精密转台、平行光管和CCD相机构成的光学实验室相机标定的方法.首先通过Hough变换和最小二乘模板匹配方法得到平行光管十字丝钣孔在CCD相机焦平面上的成像交叉点的位置,然后根据相机畸变模型,由最小二乘回归解算出内方位元素和畸变参数,实验证明该方法标定结果满足空三处理和测图精度的要求.

关键词： CCD相机几何标定最小二乘模板匹配非线性畸变

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具备自动特征提取能力的智能监测系统

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哈尔滨工业大学学报 2010年第9期42卷 1495-1499页

作者：申志刚何宁李亮南京航空航天大学机电学院南京210016

为了减少加工状态监测系统开发的时间和成本,提出自动敏感特征提取方法,自动选择合适的传感器和信号处理技术来提取出"敏感特征".针对高速铣削过程中的刀具磨损监测,采用切削力、振动、声音和声发射传感器来采集信号,并运用时域、频域... 详细信息

为了减少加工状态监测系统开发的时间和成本,提出自动敏感特征提取方法,自动选择合适的传感器和信号处理技术来提取出"敏感特征".针对高速铣削过程中的刀具磨损监测,采用切削力、振动、声音和声发射传感器来采集信号,并运用时域、频域和小波分析技术对信号进行处理.试验结果表明:该方法可自动地进行传感器和信号处理技术的选择,提取出的敏感特征适合于自学习监测系统应用.

关键词：智能监测传感器信号处理特征量高速铣削

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