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Initiation and maintenance of plant stem cells in root and shoot apical meristems

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aBIOTECH 2020年第3期1卷 194-204页

作者： Junxia Wang Yinghua Su Xiangpei Kong Zhaojun Ding Xian Sheng Zhang The Key Laboratory of Plant Development and Environmental Adaptation Biology Ministry of EducationCollege of Life SciencesShandong UniversityQingdao 266237ShandongChina State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTai’an 271018ShandongChina

Plant stem cells are a small group of cells with a self-renewal capacity and serve as a steady supply of precursor cells to form new differentiated tissues and organs in plants.Root stem cells and shoot stem cells,which are located in the root apical meristem and in the shoot apical meristem,respectively,play a critical role in plant longitudinal growth.These stem cells in shoot and root apical meristems remain as pluripotent state throughout the lifespan of the plant and control the growth and development of plants.The molecular mechanisms of initiation and maintenance of plant stem cells have been extensively investigated.In this review,we mainly discuss how the plant phytohormones,such as auxin and cytokinin,coordinate with the key transcription factors to regulate plant stem cell initiation and maintenance in root and shoot apical meristems.In addition,we highlight the common regulatory mechanisms of both root and shoot apical meristems.

关键词： Stem cell Initiation Maintenance Auxin Cytokinin Transcription factors

NAC1 regulates root ground tissue maturation by coordinating with the SCR/SHR-CYCD6;1 module in Arabidopsis

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Molecular Plant 2023年第4期16卷 709-725页

作者： Chuantian Xie Cuiling Li Fengxia Wang Feng Zhang Jiajia Liu Junxia Wang Xiansheng Zhang Xiangpei Kong Zhaojun Ding The Key Laboratory of Plant Development and Environmental Adaptation Biology Ministry of EducationCollege of Life SciencesShandong UniversityQingdao Shandong266237China National Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTaianShandong 271018China

Precise spatiotemporal control of the timing and extent of asymmetric cell divisions(AcDs)is essential for plant development.In the Arabidopsis root,ground tissue maturation involves an additional AcD of the endo-dermis that maintains the inner cell layer as the endodermis and generates the middle cortex to the outside.Through regulation of the cell cycle regulator CYCLIND6;1(CYCD6;1),the transcription factors SCARECROW(SCR)and SHORT-ROOT(SHR)play critical roles in this process.In the present study,we found that loss of function of NAC1,a NAC transcription factor family gene,causes markedly increased periclinal cell divisions in the root endodermis.Importantly,NAC1 directly represses the transcription of CYCD6;1 by recruiting the co-repressor TOPLESS(TPL),creating a fine-tuned mechanism to maintain proper root ground tissue patterning by limiting production of middle cortex cells.Biochemical and genetic analyses further showed that NAC1 physically interacts with SCR and SHR to restrict excessive periclinal cell divisions in the endo-dermis during root middle cortex formation.Although NAC1-TPL is recruited to the CYCD6;1 promoter and represses its transcription in an SCR-dependent manner,NAC1 and SHR antagonize each other to regu-late the expression of CYCD6;1.Collectively,our study provides mechanistic insights into how the NAC1-TPL module integrates with the master transcriptional regulators SCR and SHR to control root ground tissue patterning by fine-tuning spatiotemporal expression of CYCD6;1 in Arabidopsis.

关键词： root,NAC1,SCR,SHR,TOPLESS,CYCD6 1

Recent Insights into Brassinosteroid Signaling in Plants： Its Dual Control of Plant Immunity and Stomatal Development

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Molecular Plant 2012年第6期5卷 1179-1181页

作者： Xiangpei Kong Jiaowen Pan Guohua Cai Dequan Li State Key Laboratory of Crop Biology Shandong Key Laboratory of Crop BiologyCollege of Life SciencesShandong Agricultural UniversityTai'anShandong 271018China

Brassinosteroid （BR） signaling, plant innate immunity, and stomatal developments are three pathways that are initiated by receptor-like kinases. This commentary focuses on the lat- est findings in the role of BR signaling in plant immunity and stomatal development that provide some insight into the molecular mechanism of the BR signal pathway interacting with other receptor signaling pathways.

关键词：基因括约肌切开术内窥镜磷酸转移酶类免疫先天免疫学试验植物

D53： The Missing Link in Strigolactone Signaling

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Molecular Plant 2014年第5期7卷 761-763页

作者： Xiangpei Kong Maolin Zhang Zhaojun Ding The Key Laboratory of Plant Cell Engineering and Germplasm Innovation College of Life Sciences Shandong University Jinan 250100 Shandong China

Strigolactones （SLs）, a group of small carotenoid-derived terpenoid lactones, have been recently identified as plant hormones controlling plant architecture through modulating shoot and root branching （Brewer et al., in the rhizosphere because of 2013）. SLs were first discovered their involvement in both symbiotic and parasitic interactions. Deficiencies in SL biosynthesis and perception lead to excessive growth of axillary bud, which is exemplified through various mutants such as max1, max2,

关键词：内皮缩血管肽类内酯类铅胰岛素植物生长调节物

The maize primary,crown and seminal roots have differential growth patterns in response to aluminium and salinity stress

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The maize primary,crown and seminal roots have differential ...

第一届全国玉米生物学学术研讨会

作者：张茂林 Xiangpei Kong Cuiling Li Zhaojun Ding The Key Laboratory of Plant Cell Engineering and Germplasm Innovation College of Life SciencesShandong University

The maize root system displays a complex root structure comprising several root types,which include embryonic primary and seminal roots,and postembryonic shoot-borne and lateral roots.Here,the primary,crown and seminal roots were found to have differential growth responses under the same abiotic stress conditions such as aluminium and salinity stress.To better understand the molecular mechanism of the

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来源： cnki会议评论

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限行条件下配送车辆配置的二阶段随机规划

系统工程理论与实践 2018年第12期38卷 3212-3221页

作者：都牧胡祥培 kong Nan 孙丽君大连理工大学系统工程研究所大连116023 普渡大学工程学院印第安纳州西拉法叶47906

针对车辆限行下配送车辆数量和配送时间均具有不确定性这一难题,通过建立二阶段随机规划模型,实现物流配送车队中传统能源和新能源车辆比例和数量的合理配置,以保障后续生产配送的协同进行.以最小化日均车辆采购成本和后续生产配送期望... 详细信息

针对车辆限行下配送车辆数量和配送时间均具有不确定性这一难题,通过建立二阶段随机规划模型,实现物流配送车队中传统能源和新能源车辆比例和数量的合理配置,以保障后续生产配送的协同进行.以最小化日均车辆采购成本和后续生产配送期望成本为目标建立二阶段随机整数规划模型;为求解模型,提出改进的随机分支定界算法,并嵌入局部搜索以提高上界的估计效率;通过数据实验验证了模型和算法的有效性.此外,利用该模型和算法,探讨了不同车辆限行措施的执行类型和执行概率对企业车辆配置决策的影响.本文研究有利于解决车辆限行导致的城市物流配送难题,为保障我国城市物流相关企业日常运营提供决策方法.

关键词：二阶段随机整数规划随机分支定界算法车队车辆配置车辆限行

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基于满意度的研究生过程质量分析研究

中国高教研究 2011年第5期 44-48页

作者：孔祥沛南京航空航天大学江苏省教育评估院综合评估室主任副研究员江苏南京210024

研究生培养过程中的质量如何,作为教育服务接受者的研究生最具发言权。采用协方差结构方程模型技术,根据Parasuraman、Zeithaml和Berry(1988提出,1991修订)的服务质量观念模型(PZB GapModel)及服务质量量表(SERVQUAL),编订研究生满意度... 详细信息

研究生培养过程中的质量如何,作为教育服务接受者的研究生最具发言权。采用协方差结构方程模型技术,根据Parasuraman、Zeithaml和Berry(1988提出,1991修订)的服务质量观念模型(PZB GapModel)及服务质量量表(SERVQUAL),编订研究生满意度量表,施测、进行信效度检验,并通过研究生对服务质量期望与认知的差异程度来探讨研究生教育培养过程的质量。

关键词：研究生满意度教育质量

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柳暗花明:胞外生长素信号感受的新突破

植物学报 2023年第6期58卷 861-865页

作者：孔祥培张蒙悦丁兆军山东大学生命科学学院植物发育与环境适应生物学教育部重点实验室青岛266237

生长素在植物生长发育过程中发挥重要作用,其信号转导机制一直是植物学领域关注的热点。前期研究表明,ABP1-TMK分子模块参与胞外生长素信号感受,但ABP1作为生长素受体备受争议。近期,福建农林大学徐通达团队和杨贞标团队鉴定到ABL蛋白... 详细信息

生长素在植物生长发育过程中发挥重要作用,其信号转导机制一直是植物学领域关注的热点。前期研究表明,ABP1-TMK分子模块参与胞外生长素信号感受,但ABP1作为生长素受体备受争议。近期,福建农林大学徐通达团队和杨贞标团队鉴定到ABL蛋白作为生长素结合蛋白参与胞外生长素信号感受。与传统的功能冗余不同,ABL和ABP1通过蛋白结构的相似性实现功能补偿效应,进而与TMK在细胞膜上形成复合体,作为胞外生长素的共受体介导生长素信号驱动的快速反应。该研究深入解析了胞外生长素信号感受的重要机制,是生长素研究领域的重大突破。

关键词：生长素生长素受体 ABL1 ABL2 ABP1 TMK

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人工智能使能系统的可信决策:进展与挑战

管理工程学报 2022年第6期36卷 1-14页

作者：孔祥维王子明王明征胡祥培浙江大学管理学院浙江杭州310058

人工智能的应用已经渗透到许多领域,对社会经济和人民生活产生了重大影响。但其在自动驾驶和智能医疗等高风险应用中产生了许多不可预知的风险和事故,使得人们对人工智能使能系统决策产生了信任危机,人工智能可信决策的研究也随之兴起... 详细信息

人工智能的应用已经渗透到许多领域,对社会经济和人民生活产生了重大影响。但其在自动驾驶和智能医疗等高风险应用中产生了许多不可预知的风险和事故,使得人们对人工智能使能系统决策产生了信任危机,人工智能可信决策的研究也随之兴起。本文首先分析了人工智能使能系统的风险和不确定性,根据其风险来源,从模型、数据和信任等三方面重点阐述了人工智能可信问题的研究进展,从管理视角提出了多重不确定情境下人工智能使能系统可信决策的挑战,以及贯通人工智能系统生命周期的人机协同可信决策框架,最后对人工智能使能系统可信决策研究进行了展望,期望对解决多重不确定情境下的可信决策问题具有理论上和实践上的指导意义。

关键词：可信决策人工智能使能系统人机协同信任多重不确定