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Light participates in the auxin-dependent regulation of plant growth

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Journal of Integrative Plant Biology 2021年第5期63卷 819-822页

作者： Bingsheng Lv jiayong zhu Xiangpei Kong Zhaojun Ding The Key Laboratory of Plant Development and Environmental Adaptation Biology Ministry of EducationCollege of Life SciencesShandong UniversityQingdao 266237China State Key Laboratory of Microbial Technology Shandong UniversityQingdao 266237China

Light is the energy source for plant photosynthesis and influences plant growth and *** multiple photoreceptors, plant interprets light signals through various downstream phytohormones such as auxin. Recently, Chen et al.(2020) uncover a new layer of regulation in IPyA pathway of auxin biosynthesis by light. Here we highlight recent studies about how light controls plant growth through regulating auxin biosynthesis and signaling.

关键词： auxin biosynthesis and signaling light plant growth shade avoidance syndrome

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某污水处理厂污泥处理系统改造实例

供水技术 2024年第3期18卷 23-27,31页

作者：朱加勇张赛王利超北京恩菲环保股份有限公司北京100038

介绍了河南某污水处理厂污泥处理系统改造项目的工程设计以及改造实施后的运行情况。本工程通过对原带式浓缩脱水一体机改造的方式,将原污泥脱水系统改造为“重力浓缩+带式浓缩”两级污泥浓缩系统。作为新增板框压滤系统预处理段,既节... 详细信息

介绍了河南某污水处理厂污泥处理系统改造项目的工程设计以及改造实施后的运行情况。本工程通过对原带式浓缩脱水一体机改造的方式,将原污泥脱水系统改造为“重力浓缩+带式浓缩”两级污泥浓缩系统。作为新增板框压滤系统预处理段,既节省了资金,又提高了污泥脱水效率。污泥处理系统改造完成投入运行以来,稳定可靠,脱水污泥含水率低于60%,处理后的污泥运至当地某制肥企业进行土地利用,实现了污泥的减量化、无害化、资源化处理,可为类似项目提供借鉴。

关键词：污泥处理改造重力浓缩机械浓缩板框压滤土地利用

SIZ1 negatively regulates aluminum resistance by mediating the STOP1–ALMT1 pathway in Arabidopsis

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Journal of Integrative Plant Biology 2021年第6期63卷 1147-1160页

作者： Jiameng Xu jiayong zhu Jiajia Liu Junxia Wang Zhaojun Ding Huiyu Tian The Key Laboratory of Plant Development and Environmental Adaptation Biology Ministry of EducationCollege of Life SciencesShandong UniversityQingdao 266237China

Sensitive to proton rhizotoxicity 1(STOP1) functions as a crucial regulator of root growth during aluminum(Al) stress. However, how this transcription factor is regulated by Al stress to affect downstream genes expression is not well understood. To explore the underlying mechanisms of the function and regulation of STOP1, we employed a yeast two hybrid screen to identify STOP1-interacting proteins. The SUMO E3 ligase SIZ1, was found to interact with STOP1 and mainly facilitate its SUMO modification at K40 and K212 residues. Simultaneous introduction of K40 R and K212 R substitutions in STOP1 enhances its transactivation activity to upregulate the expression of aluminum-activated malate transporter 1(ALMT1)via increasing the association with mediator 16(MED16) transcriptional co-activator. Loss of function of SIZ1 causes highly increased expression of ALMT1, thus enhancing Al-induced malate exudation and Al tolerance. Also, we found that the protein level of SIZ1 is reduced in response to Al stress. Genetic evidence demonstrates that STOP1/ALMT1 is epistatic to SIZ1 in regulating root growth response to Al stress. This study suggests a mechanism about how the SIZ1–STOP1–ALMT1 signaling module is involved in root growth response to Al stress.

关键词： ALMT1 aluminum SIZ1 STOP1 SUMOylation

高排放标准下污水厂与人工湿地组合工艺工程实践

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水处理技术 2024年第3期50卷 133-137页

作者：张薛龙张强朱加勇卢东昱徐永军李奇聪北京恩菲环保股份有限公司 100038 泛华建设集团有限公司北京100070

河北省某乡镇新建市政污水集中处理工程,设计近期规模6 000 m^(3)/d,由污水处理厂、人工湿地以及配套污水管网等组成,污水处理厂出水经人工湿地进一步处理后排放河道,总排放口出水水质执行地表水准Ⅱ类标准。针对该工程排放标准较高、... 详细信息

河北省某乡镇新建市政污水集中处理工程,设计近期规模6 000 m^(3)/d,由污水处理厂、人工湿地以及配套污水管网等组成,污水处理厂出水经人工湿地进一步处理后排放河道,总排放口出水水质执行地表水准Ⅱ类标准。针对该工程排放标准较高、冬季低温稳定运行难度较大等特点,设计污水处理厂采用多级AO-MBR+臭氧催化氧化的工艺流程,人工湿地采用水平潜流湿地与温室大棚相结合的形式。工程建成后已连续运行6个月,总出水COD、NH_(3)-N、TN、TP月均浓度范围分别为12.9~14.4、0.16~0.43、6.77~8.77、0.06~0.08 mg/L。介绍了该工程工艺流程及主要构筑物工艺参数、池型布置及设计特点。

关键词：地表水准Ⅱ类标准多级AO-MBR 臭氧催化氧化人工湿地温室大棚

A feedback regulation between ARF7-mediated auxin signaling and auxin homeostasis involving MES17 affects plant gravitropism

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Journal of Integrative Plant Biology 2022年第7期64卷 1339-1351页

作者： Feng Zhang Cuiling Li Xingzhen Qu Jiajia Liu Zipeng Yu Junxia Wang jiayong zhu Yongqiang Yu Zhaojun Ding The Key Laboratory of Plant Development and Environmental Adaptation Biology Ministry of EducationCollege of Life SciencesShandong UniversityQingdao 266237China Horticulture Biology and Metabolomics Center Haixia Institute of Science and TechnologyFujian Agriculture and Forestry UniversityFuzhou 350002China

Gravitropism is an essential adaptive response of land *** auxin gradients across plant organs,interpreted by multiple auxin signaling components including AUXIN RESPONSE FACTOR7(ARF7),trigger differential growth and bending ***,how this fundamental process is strictly maintained in nature remains ***,we report that gravity stimulates the transcription of METHYL ESTERASE17(MES17)along the lower side of the hypocotyl via ARF7-dependent auxin *** asymmetric distribution of MES17,a methyltransferase that converts auxin from its inactive form methyl indole-3-acetic acid ester(MeI AA)to its biologically active form free-IAA,enhanced the gradient of active auxin across the hypocotyl,which in turn reversely amplified the asymmetric auxin responses and differential growth that shape gravitropic *** together,our findings reveal the novel role of MES17-mediated auxin homeostasis in gravitropic responses and identify an ARF7-triggered feedback mechanism that reinforces the asymmetric distribution of active auxin and strictly controls gravitropism in plants.

关键词： ARF7 auxin gravitropism homeostasis MES17

Multi-Resource Collaborative Service Restoration of a Distribution Network with Decentralized Hierarchical Droop Control

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Protection and Control of Modern Power Systems 2024年第1期9卷 19-37页

作者： Wei Zhang Cong Zhang jiayong Li Lipeng zhu Shiran Cao Wen Huang Zhikang Shuai College of Electrical and Information Engineering Hunan UniversityChangshaChina Hunan University ChangshaChina CSEE Journal of Power and Energy Systems Chinese Journal of Electrical Engineerin

To improve the resilience of distribution networks(DNs)in the event of extreme natural disasters such as typhoons and rainstorms,it is imperative to efficiently implement distribution service restoration(DSR)to restore loads as soon as *** previous studies,DSR has mainly adopted the distributed resource model with droop or PQ *** inhibits the exploitation of the potential of distributed generators(DGs)in load restoration when the DN loses support from the upstream transmission ***,this paper proposes a multi-resource collaborative service restoration(MRCSR)approach for DNs incorporating local soft open points,DGs,and tie *** MRCSR model is developed by integrating a decentralized hierarchical droop control(DHDC)strategy and incorporating the frequency and voltage features of the load demand.A two-stage iterative feedback optimization(TSIFO)algorithm is then developed to analyze the MRCSR model in an accurate and efficient ***,the proposed model and algo-rithm are tested on the modified IEEE 33-bus system and a practical distribution system of the Taiwan Power Company to verify their effectiveness and advantages over existing approaches.

关键词： service Service integrating

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明胶血浆代用品的研究与开发策略探讨

中国输血杂志 2014年第5期27卷 550-553页

作者：刘涛朱家勇广东药学院药用生物活性物质研究所广东省生物活性药物研究重点实验室广东广州510006 广州大学城健康产业科技园投资管理有限公司

明胶类血浆代用品是临床常用血容量扩充剂,但其扩容有效性和应用安全性问题长期存在。本文概述了血浆代用品历史演变和发展,从明胶活性肽与凝血功能/血容量间关系出发,对明胶血浆代用品导致凝血障碍的副作用和扩容有效性不足的可能改善... 详细信息

明胶类血浆代用品是临床常用血容量扩充剂,但其扩容有效性和应用安全性问题长期存在。本文概述了血浆代用品历史演变和发展,从明胶活性肽与凝血功能/血容量间关系出发,对明胶血浆代用品导致凝血障碍的副作用和扩容有效性不足的可能改善途径进行了分析,并探讨了新型明胶修饰/交联剂的选择和明胶原料适用性。以期对新型明胶血浆代用品的研究和开发提供新方向和思路。

关键词：明胶血浆代用品胶原蛋白多肽

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聚合铝水解形态对混凝效果及絮体特性的影响

环境工程学报 2017年第2期11卷 733-738页

作者：柯水洲涂家勇朱佳韦伟湖南大学土木工程学院长沙410082 深圳职业技术学院建筑与环境工程学院深圳518055 哈尔滨工业大学市政与环境工程学院哈尔滨150090

采用微量滴定法制备不同碱化度的聚合铝,并测定其铝形态分布,通过其对腐殖酸-高岭土水样进行烧杯实验,依据絮体的Zeta电位、浊度、UV254及絮体强度因子及恢复因子等参数,以综合评价聚合铝水解形态的混凝机理及其絮体特性。结果表明:聚... 详细信息

采用微量滴定法制备不同碱化度的聚合铝,并测定其铝形态分布,通过其对腐殖酸-高岭土水样进行烧杯实验,依据絮体的Zeta电位、浊度、UV254及絮体强度因子及恢复因子等参数,以综合评价聚合铝水解形态的混凝机理及其絮体特性。结果表明:聚合铝投加前后铝形态分布存在很大差异,碱化度越低影响越明显,碱化度为0.5的聚合铝中Ala含量由原来的69.57%变为4%左右,而其Alc由9.36%变为50%左右;预制铝的中聚体和高聚体形态在混凝过程中相对比较稳定,而低聚合度的Ala变化显著;Alb电中和能力强,对溶解性有机物去除效果好,其絮体成长速度慢但絮体强度高;Alc具有较强的吸附架桥能力,能促进浊度的去除;预制Alc的吸附架桥能力强于水解生成的Alc,但其絮体恢复性能差。

关键词：聚合铝水解形态混凝效果絮体特性絮体强度絮体再生

原花青素对PC12细胞氧化应激损伤保护作用的细胞周期调控机制

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第三军医大学学报 2014年第17期36卷 1809-1812页

作者：梅寒芳李荷朱家勇广东药学院广东省药用生物活性物质研究重点实验室广州510006 广东药学院基础学院生物化学与分子生物学系广州510006

目的观察原花青素对过氧化氢诱导体外培养大鼠嗜铬细胞瘤PC12细胞氧化损伤及细胞周期阻滞的保护作用,并探讨细胞周期调控基因c-Abl和plk1在其中的作用。方法采用MTT法观察不同浓度原花青素对100μmol/L过氧化氢诱导6 h的PC12细胞增殖率... 详细信息

目的观察原花青素对过氧化氢诱导体外培养大鼠嗜铬细胞瘤PC12细胞氧化损伤及细胞周期阻滞的保护作用,并探讨细胞周期调控基因c-Abl和plk1在其中的作用。方法采用MTT法观察不同浓度原花青素对100μmol/L过氧化氢诱导6 h的PC12细胞增殖率的影响。采用流式细胞仪检测原花青素对诱导的PC12细胞周期分布的影响,Western blot检测不同浓度原花青素对诱导的PC12细胞c-Abl和plk1基因蛋白表达水平的影响。结果与对照组比较,过氧化氢显著降低PC12细胞增殖率(P<0.01)、显著增高PC12细胞S期分布比例(P<0.01)、显著诱导c-Abl和plk1基因蛋白水平表达增强(P<0.01)。与过氧化氢诱导组比较,原花青素剂量依赖性提高PC12细胞的增殖率(P<0.01)、缓解过氧化氢诱导的细胞周期S期阻滞(P<0.01)、降低c-Abl和plk1基因蛋白水平的表达(P<0.01)。结论原花青素对过氧化氢诱导的PC12细胞氧化损伤具有保护作用,其机制可能是通过缓解过氧化氢诱导的细胞周期S期阻滞、降低细胞周期调控相关基因c-Abl和plk1的蛋白表达水平来实现的。

关键词：原花青素过氧化氢 PC12细胞 plk1基因 c-Abl基因