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Plant pleiotropic drug resistance transporters:Transport mechanism, gene expression,and function

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Journal of Integrative Plant Biology 2014年第8期56卷 729-740页

作者： Mohammed Nuruzzaman Ru Zhang hong-zhe cao Zhi-Yong Luo Molecular Biology Research Center School of Life Sciences Central South University State Key Laboratory of Medical Genetics Xiangya School of Medicine Central South University

Pleiotropic drug resistance （PDR） transporters belonging to the ABCG subfamily of ATP-binding cassette （ABC） transporters are identified only in fungi and plants. Members of this family are expressed in plants in response to various biotic and abiotic stresses and transport a diverse array of moleculesacross membranes, Although their detailed transport mechanism is largely unknown, they play important roles in detoxification processes, preventing water loss, transport of phytohormones, and secondary metabolites. This review provides insights into transport mechanisms of plant PDR transporters, their expression profiles, and multitude functions in plants.

关键词： ABC transporters expression pattern plant defense pleiotropic drug resistance transport mechanism

PDR transporters in medicinal plant Panax ginseng involved in ginsenosides transport and abiotic stresses

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PDR transporters in medicinal plant Panax ginseng involved i...

鄂尔多斯盆地华池地区三叠系长7页岩油储层特征、形成环境及富集模式

生态文明建设中的植物学：现在与未来——中国植物学会第十五届会员代表大会暨八十周年学术年会

作者： Zhi-Yong Luo Ru Zhang Jie Zhu hong-zhe cao Jing-Jia Huang Molecular Biology Research Center School of Life SciencesCentral South University State Key Laboratory of Medical Genetics Xiangya School of MedicineCentral South University

Plants produce a large number of secondary metabolites,such as terpenoids,alkaloids and *** metabolites play important functions as protectants for plants against herbivores and pathogens,as well as abiotic ***,accumulation and transport of these metabolites are highly regulated in plant to accomplish the *** plant pleiotropic drug resistance(PDR) family of ATP-binding cassette(ABC) transporters is potentially involved in the transport of secondary metabolites,currently,little is known about their actual *** this study,we cloned two PDR genes(PgPDR2 and PgPDR3)

关键词： PDR transporters ginsenosides transport abiotic stresses Panax ginseng Acknowledgements

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岩性油气藏 2025年第1期37卷 24-40页

作者：梁锋曹哲延长油田股份有限公司吴起采油厂陕西延安717600

通过对鄂尔多斯盆地华池地区三叠系长7段钻井岩心进行岩石学特征以及元素地球化学测试分析,采用V/(V+Ni),Ni/Co,U/Th,Sr/Cu,cao/(MgO*Al_(2)O_(3)),Sr/Ba,Fe/Mn,Mn/Ti,Ba_(bio)值和P/Al值等多种判别标准,并结合总有机碳的含量,进行古环... 详细信息

通过对鄂尔多斯盆地华池地区三叠系长7段钻井岩心进行岩石学特征以及元素地球化学测试分析,采用V/(V+Ni),Ni/Co,U/Th,Sr/Cu,cao/(MgO*Al_(2)O_(3)),Sr/Ba,Fe/Mn,Mn/Ti,Ba_(bio)值和P/Al值等多种判别标准,并结合总有机碳的含量,进行古环境分析,恢复了沉积期的古气候、古盐度和古氧化还原条件等。研究结果表明:①鄂尔多斯盆地华池地区三叠系长7段岩石主要为深灰色泥岩、深灰色灰质泥岩及含炭屑的粉砂质泥岩、富含有机质的粉砂质泥岩,黏土矿物晶间孔与粒间孔是主要的孔隙类型,可见少量溶蚀孔和微裂缝。②研究区延长组长7沉积时期,有机质生产力强,环境以淡水为主且处于贫氧到缺氧状态,其中长7_(2)—长7_(3)亚段沉积时期,部分水体较深的区域出现极强的还原条件,主要为温湿气候。整体上为深水环境,长7_(2)亚段沉积时位于深水区的边界地带,其水深明显较长71与长7_(3)亚段更深,P/Al值以及Ba_(bio)值总体上变化趋势一致,自下而上具有逐渐增大的趋势。③研究区延长组长7段古沉积环境具备适宜的温度和盐度条件,与深水和强还原性特征共同促进了有机质的广泛发育、富集和保存,源岩与储层之间通过裂缝连通,离源岩较近的储层,其捕获原油的数量和效率更高,这种源储配置为页岩油的大规模富集成藏奠定了坚实的基础。

关键词：页岩油储层元素地球化学古环境古生产力有机质富集源储配置长7 三叠系华池地区鄂尔多斯盆地

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Particles attrition of binary mixtures in the coal-fueled chemical looping system based on fluidized bed

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Particuology 2024年第3期86卷 281-290页

作者： Heyu Li zhe Sun Yan cao Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China University of Chinese Academy of Sciences Bejing 100049China CAS Key Laboratory of Renewable Energy Guangzhou 510640China Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640China College of Chemistry and Chemical Engineering Anhui UniversityHefei230601China

In this work,a reactive air jet attrition device with auto-recording and collection of elutriated fines was *** established insights into the physiochemical interaction and further correlated attrition behaviors between char and oxygen carriers under various operation *** attrition rate increased by over 110% upon the introduced CO_(2),which brought in the significant effect of thermo-chemical stress,similarly in effects of the increased char addition ratio and the decreased sizes of char or hematite in different *** the char-hematite co-attrition process,the elutriated carbon loss of char with poor mechanical strength was found to be over 10%,while the reactive iron loss of hematite was found to be 6.3%,and was enriched in elutriated *** reaction-derived thermochemical stress and the collision-derived mechanical stress jointly controls the particle attrition during the cyclic transformation of oxygen carrier particles in coal-fueled chemical looping fluidization,especially sig-nificant in its reduction stage.

关键词： Attrition Binary species Chemical looping Oxygen carrier CO_(2)capture

Isolation, Identification, and Herbicidal Activity of Metabolites Produced by Pseudomonas aeruginosa CB-4

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Journal of Integrative Agriculture 2014年第8期13卷 1719-1726页

作者： YANG Juan cao hong-zhe WANG Wei ZHANG Li-hui DONG Jin-gao Mycotoxin and Molecular Plant Pathology Laboratory Agricultural University of Hebei

CB-4, a bacterial strain with highly effective herbicidal activity, was isolated from infected corn leaves. Through morphology, physiological and biochemical tests, and 16 S ribosomal DNA gene sequencing methods, CB-4 was identified as Pseudomonas aeruginosa. We conducted activity-evaluation experiments in the laboratory to assess the herbicidal potential of metabolites produced by strain CB-4. Crude extracts of strain CB-4 have high inhibition activity on Digitaria sanguinalis. In general, the root and shoot growth parameters of D. sanguinalis were significantly reduced by metabolites of strain CB-4. The IC50 of the culture filtrate extracts for the radicula and coleoptile of D. sanguinalis were 0.299 and 0.210 mg mL-1, respectively. Component 2 of the herbicidal activity of the crude toxin from strain CB-4 was successfully purified for the first time by using high-speed counter current chromatography with a two-phase solvent system composed of petroleum ether-ethyl acetate-methanol-water（4：5：4：5, v/v） and high-performance liquid chromatography. We concluded that the metabolites of strain CB-4 have the potential to be developed as a microbe-based herbicide.

关键词： Pseudomonas aeruginosa bioherbicide biocontrol HSCCC HPLC

Magneto-acoustic oscillations observed in a solar plage region

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Research in Astronomy and Astrophysics 2021年第7期21卷 241-253页

作者： Haisheng Ji Parida Hashim zhenxiang hong zhe Xu Jinhua Shen Kaifan Ji Wenda cao University of the Chinese Academy of Sciences Beijing 100871China Purple Mountain Observatory DMSA/CASNanjing 210023China Xinjiang Astronomical Observatory CASUrumqi 830011China Yunnan Observatories CASKunming 650216China Big Bear Solar Observatory 40386 North Shore LaneBig Bear CityCA 922314USA

We gave an extensive study for the quasi-periodic perturbations on the time profiles of the line of sight(LOS) magnetic field in 10 × 10 sub-areas in a solar plage region(corresponds to a facula on the photosphere).The perturbations are found to be associated with the enhancement of He I 10830 A absorption in a moss region,which is connected to loops with million-degree *** analysis to the perturbations gives a kind of spectrum similar to that of Doppler velocity:a number of discrete periods around 5 *** amplitudes of the magnetic perturbations are found to be proportional to magnetic field strength over these *** addition,magnetic perturbations lag behind a quarter of the cycle in the phase with respect to the p-mode Doppler *** show that the relationships can be well explained with an MHD solution for the magneto-acoustic oscillations in high-β *** analysis also shows that,for the two regions with the stronger and weaker magnetic field,the perturbations are always *** findings show that the magnetic perturbations are actually magneto-acoustic oscillations on the solar surface,the photosphere,powered by p-mode *** findings may provide a new diagnostic tool for exploring the relationship between magneto-acoustic oscillations and the heating of the solar upper atmosphere,as well as their role in helioseismology.

关键词： Sun:photosphere Sun:magnetic field Sun:helioseismology

Cascading failures in local-world evolving networks

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Journal of zhejiang University-Science A(Applied Physics & Engineering) 2008年第10期9卷 1336-1340页

作者： zhe-jing BAO Yi-jia cao School of Electrical Engineering Zhejiang University Hangzhou 310027 China College of Electrical and Information Engineering Hunan University Changsha 410082 China

The local-world (LW) evolving network model shows a transition for the degree distribution between the exponential and power-law distributions, depending on the LW size. Cascading failures under intentional attacks in LW network models with different LW sizes were investigated using the cascading failures load model. We found that the LW size has a significant impact on the network's robustness against deliberate attacks. It is much easier to trigger cascading failures in LW evolving networks with a larger LW size. Therefore, to avoid cascading failures in real networks with local preferential attachment such as the Internet, the World Trade Web and the multi-agent system, the LW size should be as small as possible.

关键词： Complex network Local world (LW) Cascading failures Power-law Attack

高校硕士研究生就业多重困境探析——以S高校为例

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江苏商论 2025年第1期 130-134页

作者：曹迪张浩哲沈阳化工大学人文与艺术学院辽宁沈阳110142

社会工作硕士毕业生严峻的就业形势与社会工作从业人员的巨大缺口这一矛盾,深刻地影响着社会的稳定。为了解决这一矛盾,本文由小看大,基于S大学社工硕士毕业生,利用问卷调查的方式,探究择业就业取向。再利用访谈法,分析得出取向形成的原... 详细信息

社会工作硕士毕业生严峻的就业形势与社会工作从业人员的巨大缺口这一矛盾,深刻地影响着社会的稳定。为了解决这一矛盾,本文由小看大,基于S大学社工硕士毕业生,利用问卷调查的方式,探究择业就业取向。再利用访谈法,分析得出取向形成的原因,进而提出相应对策,使其选择社会相关工作。建设社工人才队伍,弥补人才缺口,增加就业,解决就业矛盾,是促进社会稳定的一个重要的问题。

关键词：社工硕士毕业生择业就业取向问卷调查对策建议

Iterative assist-as-needed control with interaction factor for rehabilitation robots

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Science China(Technological Sciences) 2021年第4期64卷 836-846页

作者： cao Ran CHENG Long YANG ChenGuang DONG zhe School of Artificial Intelligence University'of Chinese Academy of SciencesBeijing 100049China State Key Laboratory for Management and Control of Complex Systems Institute of Automation.Chinese Academy of SciencesBeijing 100190China School of Automation Science and Engineering South China University of TechnologyGuangzhou 510641China School of Electrical and Control Engineering North China Universityof TechnologyBeijing 100144China

Rehabilitation robots for stroke patients have drawn considerable attention because they can reduce the economic and labor costs brought by traditional rehabilitation. Control methods for rehabilitation robots have been developed to stimulate the active motion of patients and to improve the effectiveness of rehabilitation care. However, current control methods can only roughly adjust the system’s stiffness and may fail in achieving satisfactory performance. To this end, this paper introduces a novel cost function consisting of the tracking error term and the stiffness term. The cost function contains an interaction factor that represents the patient’s motion intention to balance the weight of these two terms. When the patients try to actively do training tasks, the weight of stiffness term increases, which leads to the larger allowable tracking error and lower stiffness eventually. An iterative updating law of the stiffness matrix is given to reduce the proposed cost function. Theoretical analysis based on the Lyapunov theory is given to ensure the feasibility of the proposed algorithm. Furthermore, a force estimation is used to improve interaction control performance. Finally, simulation experiments are provided to show the effectiveness of the proposed algorithm.

关键词： human-robot interaction impedance stiffness control rehabilitation