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Evaluation of drought tolerance in ZmVPP1-overexpressing transgenic inbred maize lines and their hybrids

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Journal of Integrative Agriculture 2020年第9期19卷 2177-2187页

作者： JIA Teng-jiao LI Jing-jing WANG Li-feng cao yan-yong MA Juan WANG Hao ZHANG Deng-feng LI Hui-yong Institute of Cereal Crop Henan Academy of Agricultural SciencesZhengzhou 450002P.R.China Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100089P.R.China

The vacuolar proton-pumping pyrophosphatase gene(VPP)is often used to enhance plant drought tolerance via genetic *** this study,the drought tolerance of four transgenic inbred maize lines overexpressing ZmVPP1(PH4CV-T,PH6WC-T,Chang7-2-T,and Zheng58-T)and their transgenic hybrids was evaluated at various *** normal and drought conditions,the height and fresh weight were greater for the four transgenic inbred maize lines than for the wild-type(WT)controls at the germination and seedling ***,the transgenic plants exhibited enhanced photosynthetic efficiency at the seedling *** irrigated and non-irrigated fields,the four transgenic lines grew normally,but with increased ear weight and yield compared with the WT ***,the ear weight and yield of the transgenic hybrids resulting from the PH4CV-T×PH6WC-W and Chang7-2-T×Zheng58-W crosses increased in the non-irrigated *** results demonstrated that the growth and drought tolerance of four transgenic inbred maize lines with improved photosynthesis were enhanced by the overexpression of ***,the Chang7-2 and PH4CV transgenic lines may be useful for future genetic improvements of maize hybrids to increase drought tolerance.

关键词： inbred maize lines drought stress ZmVPP1 photosynthesis

Robust Stability of Uncertain Takagi-Sugeno Fuzzy Systems with Time-varying Input-delay

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自动化学报 2008年第1期34卷 87-92页

作者： LUO Yah-Bin cao yong-yan SUN You-Xian Institue of Automation Hangzhou Dianzi University Hangzhou 310018 P. R. China State Key Laboratory of Industrial Control Technology Zhejiang University Hangzhou 310027 P.R. China

This paper aims to design a controller to robustly stabilize uncertain Takagi-Sugeno fuzzy systems with time- varying input *** on Lyapunov-Krasovskii functional approach,the sufficient conditions for robust stabilization of such systems are given in the form of linear matrix inequali- *** controller design does not have to require that the time-derivative of time-varying input delay be smaller than one. A numeric example is given to show that the proposed results are effective and less conservative.

关键词：鲁棒性不定Takagi-Sugeno模糊系统延时输入线性矩阵不等式 Lyapunov-Krasovskii函数逼近

A Stable Fault Detection Observer Design

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A Stable Fault Detection Observer Design

玉米杂交群体产量性状及其特殊配合力全基因组关联分析

第三十届中国控制会议

作者： CHEN Jianliang,cao yong-yan

This paper addresses the problem of the stable fault detection observer design by using worst-case fault sensitivity, the *** introducing several slack variables,new stable conditions and new Hindex fault sensitivity conditions are derived to develop a direct LMI optimizing *** constraining the slack variable matrices,we obtain a new design approach to designing stable fault detection observer in the form of LMIs,which avoid iterative LMI *** effectiveness of proposed approaches is demonstrated by numerical examples.

关键词： Observer HIndex Minimum Singular Value Fault Detection

来源： cnki会议评论

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作物学报 2024年第2期50卷 363-372页

作者：马娟曹言勇河南省农业科学院粮食作物研究所河南郑州450002

提高产量是玉米育种的长期目标,解析产量相关性状及其配合力的遗传基础对选育高产玉米新品种具有重要意义。本研究选用123份玉米自交系和8份测验种作为亲本,根据NCⅡ(North Carolina design Ⅱ)获得540份杂交种为材料,在新乡和周口试验... 详细信息

提高产量是玉米育种的长期目标,解析产量相关性状及其配合力的遗传基础对选育高产玉米新品种具有重要意义。本研究选用123份玉米自交系和8份测验种作为亲本,根据NCⅡ(North Carolina design Ⅱ)获得540份杂交种为材料,在新乡和周口试验田调查F1杂交种的单穗粒重、单穗重、百粒重、行粒数等8个产量及构成性状,利用玉米5.5K液相育种芯片检测亲本基因型,推断F1杂交种的基因型,利用BLINK(Bayesian information and linkage-disequilibrium iteratively nested keyway)加性和显性模型开展F1杂交种表型与其特殊配合力(special combining ability, SCA)的全基因组关联分析。结果表明,利用加性和显性模型对F1杂交种分别检测到10个和31个显著关联位点。利用显性模型检测到8个SNPs(single nucleotide polymorphisms)与SCA显著关联。不同性状和模型间共定位位点有7个,其中1个为单穗重与其SCA同时关联位点。通过对主效和共定位SNPs的扫描,共鉴定到26个候选基因,其中转录因子MYBR85、NLP9、PHD3、生长素上调小RNA(SAUR11和SAUR12)、FCS-like锌指蛋白基因FLZ16等可能是控制F1杂交种产量性状与其SCA的重要候选基因。

关键词：玉米杂交种特殊配合力全基因组关联分析

The renaissance of oxo synthesis: heterogeneous Rh-catalyzed hydroformylation

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Science China Chemistry 2025年

作者： Tao yan Zhi cao State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences National Energy Center for Coal to Clean Fuels Synfuels China Technology Co. Ltd.

Hydroformylation could convert olefins and syngas （mixture of H2and CO） into aldehydes with a great atomic *** transformation serves as one of the most prominent processes in modern chemical industry, as it provides over 10million tons of aldehydes as feedstock for our daily essential products such as plasticizers, paints, solvents, and pharmaceuticals. This process generally requires efficient yet robust catalyst to realize decent efficacy. Compared with metals such as Co, Ru, and Pd, rhodium （Rh）-based catalysts stand out due to its superior activity even under mild reaction conditions, and dominate over 70%of global hydroformylation processes.

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玉米穗轴粗全基因组关联分析

作物学报 2021年第7期47卷 1228-1238页

作者：马娟曹言勇李会勇河南省农业科学院粮食作物研究所河南郑州450002

玉米穗轴粗是一个影响玉米产量和穗轴产量的重要性状,其遗传机制的解析可以对高产育种提供指导。本研究以309份玉米自交系为材料,利用测序基因型分型技术对其进行基因型鉴定。采用FarmCPU(fixed and random model circulating probabili... 详细信息

玉米穗轴粗是一个影响玉米产量和穗轴产量的重要性状,其遗传机制的解析可以对高产育种提供指导。本研究以309份玉米自交系为材料,利用测序基因型分型技术对其进行基因型鉴定。采用FarmCPU(fixed and random model circulating probability unification)、MLMM(multiple loci mixed linear model)和CMLM(compressed mixed linear model)方法,对2017年和2019年河南原阳、河南郸城、河南虞城、海南三亚以及最佳线性无偏估计值环境的穗轴粗,进行全基因组关联分析,共鉴定12个与穗轴粗显著关联的SNP(single nucleotide polymorphisms)(P<8.60E-07)。其中,S4_29277313利用FarmCPU和MLMM方法在2017年原阳均检测到。S1_29006330、S2_170889116、S2_2046026464和S4_83821463的表型变异解释率介于10.23%~14.17%,为主效SNP。而且,S1_29006330位于已定位的穗轴粗QTL(quantitative trait loci)区间内。共挖掘17个候选基因,其中WAKL14(wall-associated receptor kinase-like 14)、转录因子ZIM35(zinc-finger protein expressed in inflorescence meristem 35)、HMGA(HMG-Y-related protein A)、组蛋白-赖氨酸N甲基转移酶ATX4(Arabidopsis trithorax 4)和XTH32(xyloglucan endotransglucosylase/hydrolase protein 32),可能是影响穗轴粗的重要基因。挖掘的4个穗轴粗主效SNP和5个候选基因可以为分子标记辅助育种、精细定位和基因克隆提供信息。

关键词：玉米全基因组关联分析 FarmCPU 穗轴粗

Solar cycles during the seventeenth century revealed by equatorial aurora records

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Earth and Planetary Physics 2025年第1期9卷 182-187页

作者： yong Wei LiMei yan Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

Solar cycles are fundamental to astrophysics,space exploration,technological infrastructure,and Earth's climate.A better understanding of these cycles and their history can aid in risk mitigation on Earth,while also deepening our knowledge of stellar physics and solar system *** the solar cycles between 1600 and 1700-especially the post-1645 Maunder Minimum,characterized by significantly reduced solar activity-poses challenges to existing solar activity *** study utilizes a new red equatorial auroral catalog from ancient Korean texts to establish solar cycle patterns from 1623 to ***,a further reevaluation of the solar cycles between 1610 and 1755 identified a total of 13 cycles,diverging from the widely accepted record of 12 cycles during that *** research enhances our understanding of historical solar activity,and underscores the importance of integrating diverse historical sources into modern analyses.

关键词： solar cycle Maunder Minimum solar activity red equatorial aurora West Pacific geomagnetic anomaly

Enhancing m^(6)A modification in the motor cortex facilitates corticospinal tract remodeling after spinal cord injury

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Neural Regeneration Research 2025年第6期20卷 1749-1763页

作者： Tian Qin Yuxin Jin Yiming Qin Feifei Yuan Hongbin Lu Jianzhong Hu yong cao Chengjun Li Department of Spine Surgery and Orthopedics Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina Key Laboratory of Organ Injury Aging and Regenerative Medicine of Hunan ProvinceChangshaHunan ProvinceChina National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina Department of Sports Medicine Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina

Spinal cord injury typically causes corticospinal tract disruption. Although the disrupted corticospinal tract can self-regenerate to a certain degree, the underlying mechanism of this process is still unclear. N6-methyladenosine(m^(6)A) modifications are the most common form of epigenetic regulation at the RNA level and play an essential role in biological processes. However, whether m^(6)A modifications participate in corticospinal tract regeneration after spinal cord injury remains unknown. We found that expression of methyltransferase 14 protein(METTL14) in the locomotor cortex was high after spinal cord injury and accompanied by elevated m^(6)A levels. Knockdown of Mettl14 in the locomotor cortex was not favorable for corticospinal tract regeneration and neurological recovery after spinal cord injury. Through bioinformatics analysis and methylated RNA immunoprecipitation-quantitative polymerase chain reaction, we found that METTL14 regulated Trib2 expression in an m^(6)A-regulated manner, thereby activating the mitogen-activated protein kinase pathway and promoting corticospinal tract regeneration. Finally, we administered syringin, a stabilizer of METTL14, using molecular docking. Results confirmed that syringin can promote corticospinal tract regeneration and facilitate neurological recovery by stabilizing METTL14. Findings from this study reveal that m^(6)A modification is involved in the regulation of corticospinal tract regeneration after spinal cord injury.

关键词： corticospinal tract remodeling epigenetic regulations locomotor cortex m^(6)A modification methyltransferase 14 protein(METTL14) mitogen-activated protein kinase neural regeneration spinal cord injury syringin TRIB2

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玉米杂交种表型全基因组预测分析

玉米科学 2023年第5期31卷 34-41页

作者：马娟曹言勇王延召河南省农业科学院粮食作物研究所郑州450002

全基因组选择(Genomic Selection,GS)能够利用影响性状的所有变异位点估计育种值并进行有效选择,可以加快优良杂交种的选育进程。利用123份自选系和8个测验种以NCII遗传交配设计组配的537个F_(1)杂交种为材料,结合玉米5.5 K液相育种芯... 详细信息

全基因组选择(Genomic Selection,GS)能够利用影响性状的所有变异位点估计育种值并进行有效选择,可以加快优良杂交种的选育进程。利用123份自选系和8个测验种以NCII遗传交配设计组配的537个F_(1)杂交种为材料,结合玉米5.5 K液相育种芯片鉴定的11 734个高质量SNP标记,利用5种GS方法的加性模型和加-显模型对新乡、周口环境穗长、穗粗和穗行数以及最佳线性无偏估计(Best Linear Unbiased Estimate,BLUE)值开展预测研究。结果表明,穗行数的预测准确性最高,为0.76~0.84;穗粗次之,为0.54~0.65;穗长的预测精度最低,为0.33~0.54,3个性状均利用BLUE值估计的准确性最高。在周口环境,相比加性模型,基因组最佳线性无偏预测和3种贝叶斯方法加-显模型对穗长预测准确性的提高率为9.09%,穗粗3种贝叶斯方法加-显模型的提高率为1.85%。绝大多数情况下,加性模型和加-显模型的预测准确性相等,说明整合显性效应并不能提高杂交种穗长、穗粗和穗行数基因组预测精度。综合考虑预测准确性方差分析、多重比较和聚类分析,再生核希尔伯特空间是最佳的杂交种预测方法。

关键词：玉米基因组选择加性模型加-显性模型杂交种预测