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Somatic Embryogenesis Receptor Kinases Control Root Development Mainly via Brassinosteroid-Independent Actions in Arabidopsis thaliana

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Journal of Integrative Plant Biology 2012年第6期54卷 388-399页

作者： junbo du Hongju Yin Shasha Zhang Zhuoyun Wei Baolin Zhao Jinghua Zhang Xiaoping Gou Honghui Lin Jia Li School of Life Sciences Sichuan UniversitySichuan 610064China School of Life Sciences Lanzhou UniversityLanzhou 730000China

Brassinosteroids （BRs）, a group of plant steroidal hormones, play critical roles in many aspects of plant growth and development. Previous studies showed that BRI1-mediated BR signaling regulates cell division and differentiation during Arabidopsis root development via interplaying with auxin and other phytohormones. Arabidopsis somatic embryogenesis receptor-like kinases （SERKs）, as co-receptors of BRI1, were found to play a fundamental role in an early activation step of BR signaling pathway. Here we report a novel function of SERKs in regulating Arabidopsis root development. Genetic analyses indicated that SERKs control root growth mainly via a BR-independent pathway. Although BR signaling pathway is completely disrupted in the serkl bakl bkkl triple mutant, the root growth of the triple mutant is much severely damaged than the BR deficiency or signaling null mutants. More detailed analyses indicated that the triple mutant exhibited drastically reduced expression of a number of genes critical to polar auxin transport, cell cycle, endodermis development and root meristem differentiation, which were not observed in null BR biosynthesis mutant cpd and null BR signaling mutant bril-701.

关键词： Brassinolide brassinosteroid RLK root development SERK.

Relay-intercropping soybean with maize maintains soil fertility and increases nitrogen recovery efficiency by reducing nitrogen input

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The Crop Journal 2020年第1期8卷 140-152页

作者： Qing du Li Zhou Ping Chen Xiaoming Liu Chun Song Feng Yang Xiaochun Wang Weiguo Liu Xin Sun junbo du Jiang Liu Kai Shu Wenyu Yang Taiwen Yong College of Agronomy Sichuan Agricultural UniversityChengdu 611130SichuanChina College of Environment Sichuan Agricultural UniversityChengdu 611130SichuanChina Sichuan Engineering Research Center for Crop Strip Intercropping System/Key Laboratory of Crop Ecophysiology and Farming System in Southwest Ministry of AgricultureChengdu 611130SichuanChina Yibing Academy of Agricultural Sciences Yibing 644000SichuanChina Shehong Farm Bureau Suining 629200SichuanChina

Optimized nitrogen(N)management can increase N-use efficiency in intercropping ***-nonlegume intercropping systems can reduce N input by exploiting biological N fixation by *** of N utilization can help in dissecting the mechanisms underlying N uptake and utilization in legume-nonlegume intercropping *** experiment was performed with three planting patterns:monoculture maize(MM),monoculture soybean(SS),and maize-soybean relay intercropping(IMS),and three N application levels:zero N(NN),reduced N(RN),and conventional N(CN)to investigate crop N uptake and utilization characteristics.N recovery efficiency and 15N recovery rate of crops were higher under RN than under CN,and those under RN were higher under intercropping than under the corresponding *** with MM,IMS showed a lower soil N-dependent rate(SNDR)in ***,the SNDR of MM rapidly declined from 86.8%in 2012 to 49.4%in 2014,whereas that of IMS declined slowly from 75.4%in 2012 to 69.4%in *** interspecific N competition rate(NCRms)was higher under RN than under CN,and increased *** nodule dry weight and nitrogenase activities were respectively 34.2%and 12.5%higher under intercropping than in monoculture at the beginning seed *** amount(Ndfa)and ratio(%Ndfa)of soybean N2 fixation were significantly greater under IS than under *** conclusion,N fertilizer was more efficiently used under RN than under CN;in particular,the relay intercropping system promoted N fertilizer utilization in comparison with the corresponding *** intercropping system helps to maintain soil fertility because interspecific N competition promotes biological N fixation by soybean by reducing N ***,a maize-soybean relay intercropping system with reduced N application is sustainable and environmentally friendly.

关键词： Maize-soybean relay intercropping Reduced nitrogen Biological nitrogen fixation Nitrogen recovery efficiency Soil nitrogen dependent rate

Molecular mechanisms of RLK-regulated plant cell-death control

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Molecular mechanisms of RLK-regulated plant cell-death contr...

PIF4 interacts with ABI4 to serve as a transcriptional activator complex to promote seed dormancy by enhancing ABA biosynthesis and signaling

细胞—生命的基础——中国细胞生物学学会2013年全国学术大会·武汉

作者： junbo du Yang Gao Yanyan Zhan Shasha Zhang Jia Li MOE Key Laboratory of Cell Activities and Stress Adaptations School of Life SciencesLanzhou University

Receptor-like protein kinases(RLKs) are cell surface transmembrane proteins regulating numerous cell-to-cell and cell-to-environment signaling pathways,including plant hormonal signaling and various innate immunity response *** and BKKl are two type II RLKs previously identified as the co-receptors of the brassinosteroid receptor *** studies from my lab and others demonstrated that BAKl and BKKl are actually involved in multiple developmental and defense signaling pathways,bak-4 bkk1-1 double null mutant showed a spontaneous cell death

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来源： cnki会议评论

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Journal of Integrative Plant Biology 2024年第5期66卷 909-927页

作者： Xiaofeng Luo Yujia Dai Baoshan Xian Jiahui Xu Ranran Zhang Muhammad Saad Rehmani Chuan Zheng Xiaoting Zhao Kaitao Mao Xiaotong Ren Shaowei Wei Lei Wang Juan He Weiming Tan junbo du Weiguo Liu Shu Yuan Kai Shu Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection School of Ecology and EnvironmentNorthwestern Polytechnical UniversityXi'an 710129China Research&Development Institute of Northwestern Polytechnical University in ShenzhenShenzhen 518057China College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China Institute of Ecological Agriculture Sichuan Agricultural UniversityChengdu 611130China College of Resources Sichuan Agricultural UniversityChengdu 611130China

Transcriptional regulation plays a key role in the control of seed dormancy,and many transcription factors(TFs)have been ***,the mechanisms underlying the interactions between different TFs within a transcriptional complex regulating seed dormancy remain largely ***,we showed that TF PHYTOCHROME-INTERACTING FACTOR4(PIF4)physically interacted with the abscisic acid(ABA)signaling responsive TF ABSCISIC ACID INSENSITIVE4(ABI4)to act as a transcriptional complex to promote ABA biosynthesis and signaling,finally deepening primary seed *** pif4 and abi4 single mutants exhibited a decreased primary seed dormancy phenotype,with a synergistic effect in the pif4/abi4 double ***4 binds to ABI4 to form a heterodimer,and ABI4 stabilizes PIF4 at the protein level,whereas PIF4 does not affect the protein stabilization of ***,both TFs independently and synergistically promoted the expression of ABI4 and NCED6,a key gene for ABA *** genetic evidence is also consistent with the phenotypic,physiological and biochemical analysis ***,this study revealed a transcriptional regulatory cascade in which the PIF4–ABI4 transcriptional activator complex synergistically enhanced seed dormancy by facilitating ABA biosynthesis and signaling.

关键词： ABA ABI4 PIF4 seed dormancy and germination transcriptional complex

Enantio-divergent C–H borylation with two different ligands from a single chiral source

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Science China Chemistry 2025年第1期68卷 226-232页

作者： Rongrong du Senmiao Xu State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China College of Material Chemistry and Chemical Engineering Key Laboratory of Organosilicon Chemistry and Material TechnologyMinistry of EducationHangzhou Normal UniversityHangzhou 311121China University of Chinese Academy of Sciences Beijing 100049China

Reported here is an iridium-catalyzed enantio-divergent C(sp^(3))–H borylation ofα-gem-dimethyl groups of trifluoromethyl ketone-derived hydrazones to construct a series of acyclic all-carbon quaternary stereocenters with a high level of chiral *** different chiral bidentate boryl ligands from a common chiral source not only can switch the enantioselectivity but also are complementary in terms of the substrate scope.

关键词： asymmetric catalysis C–H borylation all-carbon quaternary stereocenters synthetic methods

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一种三维动态测量系统在海洋工程中的应用

舰船电子工程 2015年第5期35卷 114-117页

作者：杜军波 92941部队95分队

论文主要介绍了一种三维动态测量系统的组成、工作原理等。通过油盛钻井平台在SZ36-1 WHPL平台对接作业中的应用举例,不仅保证了定位引导系统的精度,而且还可以实现虚拟三维实景显示,提高了钻井平台对接过程的直观性、真实性、安全性等... 详细信息

论文主要介绍了一种三维动态测量系统的组成、工作原理等。通过油盛钻井平台在SZ36-1 WHPL平台对接作业中的应用举例,不仅保证了定位引导系统的精度,而且还可以实现虚拟三维实景显示,提高了钻井平台对接过程的直观性、真实性、安全性等,具有广阔的应用前景。

关键词：海洋工程三维动态测量虚拟现实

Hyperosmolality tolerance of freshwater largemouth bass Micropterus salmoides to brackish in early ontogenetic stages of eggs,embryos,and yolk-sac larvae

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Journal of Oceanology and Limnology 2025年第1期43卷 286-298页

作者： du LUO Dingtian YANG South China Sea Institute of Oceanology Chinese Academy of SciencesGuangzhou 510301China Pearl River Fisheries Research Institute Chinese Academy of Fishery SciencesGuangzhou 510380China University of Chinese Academy of Sciences Beijing 100049China

Salinity is recognized as a pivotal factor limiting the migration of freshwater fish to brackish *** largemouth bass(LMB,Micropterus salmoides),a globally translocated freshwater fish,exhibits estuarine distribution,yet its hyperosmoregulatory capacity during early ontogenetic stages remains inadequately *** investigate the impact of freshwater salinization,a series of experiments were conducted in Guangzhou and Foshan,*** reveal that freshwater-activated mature eggs and naturally fertilized oocytes maintained nearly identical osmotic homeostasis,with diameters of 1.38±0.07 mm and 1.37±0.05 mm,***,both exhibited peak water excretion at a salinity of ***,a reduction in water permeability was observed in hyperosmotic *** hatching rates increased from 27.5%±14.4%in the 1.0 group to 75.1%±12.0%in the 6.0 group under fluctuating temperature ***-sac LMB larvae consistently reduced survival time from 12.5 d at 1.0 to 50.7±2.1 min at salinity of ***,more developed larvae also experienced a decrease in survival *** regression models fitting lethal time with salinity indicated a sharp decrease between 10.0 and *** findings offer practical insights for predicting distribution patterns and enhancing aquaculture technology for ***,they may contribute theoretically to the broader understanding of the osmoregulatory mechanisms of freshwater fish.

关键词： osmotic homeostasis acute toxicity median lethal time hatching rate dose-response model

Shade and microbes enhance drought stress tolerance in plants by inducing phytohormones at molecular levels: a review

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Journal of Plant Ecology 2022年第6期15卷 1107-1117页

作者： Muhammad Ahsan Asghar Bushra Ahmad Ali Raza Bilal Adil Hafz Hassan Javed Muhammad Umer Farooq Abuzar Ghafoor Muhammad Iftikhar Hussain Iram Shafq Hassan Karim Xin Sun Wenyu Yang Gábor Kocsy junbo du Department of Biological Resources Agricultural InstituteCentre for Agricultural ResearchELKHMartonvásárHungary College of Agronomy Sichuan Agricultural UniversityChengdu 611130China Department of Plant Breeding and Genetics University of AgricultureFaisalabad 38000PunjabPakistan College of Resource Sichuan Agricultural UniversityChengdu 611130China Department of Field Crops Faculty of AgricultureÇukurova UniversityAdana 01330Turkey Department of Plant Biology&Soil Science Faculty of BiologyUniversity of VigoCampus As Lagoas MarcosendeVigo 36310Spain State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Sichuan Agricultural UniversityChengduSichuan 611130China

Plants are frequently exposed to adverse environments during their life *** them drought stress is one of the major threats to agricultural *** order to survive in such unstable environment,plants have developed mechanisms through which they recognize the severity of the stress based on the incoming environmental *** combat the detrimental effects of drought,the plants have evolved various strategies to modulate their physio-hormonal *** strategies that can be modulated by shade and microbes contribute to enhancing tolerance to drought and reducing yield *** hormones,such as abscisic acid,auxin and ethylene have a major role in the shade-and microbe-associated improvement of drought tolerance through their effects on various metabolic *** this process,the CLAVATA3/EMBRYOSURROUNDING REGION-RELATED 25 peptide has a major role due to its effect on ABA synthesis as shown in our regulatory model.

关键词： abscisic acid CLAVATA3/EMBRYOSURROUNDING REGION-RELATED 25 auxin plant growth promoting rhizobacteria ethylene

光学相干断层成像在儿童川崎病冠状动脉病变中的应用进展

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中华儿科杂志 2022年第9期60卷 957-960页

作者：张清友郑博高雨萌杜军保北京大学第一医院儿科北京100034 北京大学第一医院心内科北京100034

光学相干断层成像(OCT)是一种继冠状动脉造影及血管内超声后评价冠状动脉病变(CAL)的又一重要影像学技术。川崎病最大的危害是引起CAL。近年来应用OCT技术评估川崎病患儿的CAL具有很高的应用价值,本文针对OCT在儿童川崎病的CAL病变影像... 详细信息

光学相干断层成像(OCT)是一种继冠状动脉造影及血管内超声后评价冠状动脉病变(CAL)的又一重要影像学技术。川崎病最大的危害是引起CAL。近年来应用OCT技术评估川崎病患儿的CAL具有很高的应用价值,本文针对OCT在儿童川崎病的CAL病变影像特征、临床应用价值及其不足之处进行综述,以期能够提高川崎病患儿CAL的诊治水平。

关键词：光学相干断层成像川崎病影像学技术血管内超声冠状动脉造影影像特征冠状动脉病变诊治水平