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Molecular Plant 2019年第4期12卷 464-466页

作者： yuling jiao State Key Laboratory of Plant Genomics Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China

Within multicellular plants, cells constantly communicate with their neighbors and even distant cells. A cell may produce chemical signals, such as peptides and small molecules, and perceive chemical signals from other cells. Thus, signaling chemicals mediate the exchange of information between cells. There is a simpler and faster way for cells to communicate, i.e., a cell can mechanically nudge its neighbors to send a signal. However, mechanical force is often ignored by biologists, partially due to the difficulty in directly visualizing the force, in contrast to visual detection of signaling molecules.

关键词： May the Force Be with You Overlooked Mechanical Signaling

Designing Plants: Modeling Ideal Shapes

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Molecular Plant 2019年第2期12卷 130-132页

In an industrialized world, virtually everything we are using is first designed and then manufactured. Let us use the automobile manufacturing industry as an example: engineers design vehicles based on laws of physics;select proper materials for machine parts;and assemble parts following blueprints into cars, buses, and trucks. It is evident that we need not only parts but also technical drawings and instructions for the assembly of parts into a functional pump or clutch.

关键词： Designing Plants Modeling Shapes

Interplay between the shoot apical meristem and lateral organs

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aBIOTECH 2020年第3期1卷 178-184页

作者： Chunmei Guan yuling jiao State Key Laboratory of Plant Genomics and National Center for Plant Gene Research(Beijing) Institute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Tissues and organs within a living organism are coordinated,but the underlying mechanisms are not well *** shoot apical meristem(SAM)continually produces lateral organs,such as leaves,from its peripheral *** of their close proximity,SAM and lateral organs interact during plant *** lateral organs influence the positions of newly formed organs to determine the *** SAM not only produces lateral organs,but also influences their *** particular,the SAM promotes leaf polarity determination and leaf blade ***,lateral organs help the SAM to maintain homeostasis by restricting stem cell *** advances have started to elucidate how SAM and lateral organs patterning and growth are coordinated in the shoot *** this review,we discuss recent findings on the interaction between SAM and lateral organs during plant *** particular,polar auxin transport appears to be a commonly used coordination mechanism.

关键词： Shoot apical meristem Lateral organ Morphogenesis Sussex signal Auxin

Auxin and DORNR?SCHEN joint force in the shoot apex

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Science China(Life Sciences) 2018年第7期61卷 867-868页

作者： Xiuwei Cao yuling jiao State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of Sciencesand National Center for Plant Gene ResearchBeijing 100101China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China

Auxin is a classical phytohormone that is involved in various developmental processes.A striking example of auxin action is the promotion of shoot *** the shoot apex,the shoot apical meristem(SAM)maintains a mass of stem cells in the central region,termed the central zone(CZ).Stem cells in the CZ divide slowly to replenish themselves and to provide cells to the surrounding peripheral zone(PZ),where cells divide rapidly to form lateral *** CZ also provides cells to the underneath rib meristem(RM)。

关键词：植物生长素射击合力中央区域植物激素房间 SAM 干细胞

Cellulose Microfibril-Mediated Directional Plant Cell Expansion:Gas and Brake

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Molecular Plant 2020年第12期13卷 1670-1672页

作者： Ying Wang yuling jiao College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Plant Genomics and National Center for Plant Gene Research(Beijing) Institute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China

Directional cell expansion is a fundamental process that is involved in virtually all cellular *** from isotropic growth is commonly associated with cell fate transition,organ shaping,or cell *** obtain continuous direc-tional cell growth,and tissue and organ growth as well,positive feedback loops are needed to lock anisotropic cell *** the other hand,antagonistic mechanisms are needed to terminate directional cell *** genes affecting cell shape have been identified,but only in a few cases do we under-stand the precise chains of molecular events to some ***,a cortical microtubule(CMT)-mediated mechanical feedback loop has been recognized that amplifies tensile stress anisotropy and leads to expansion perpendicular to the stress di-rection(Sampathkumar,2020;Zhao et al.,2020)(Figure 1A).By contrast,passive reorientation of cellulose microfibrils(CMFs)may form a combative mechanism that cancels directional cell expansion(Figure 1B).However,passive CMF reorientation is insufficiently recognized by developmental biologists who are interested in directional cell expansion,anisotropic tissue growth,and organ shaping.

关键词： Figure expansion directional

Molecular Mechanisms of Leaf Morphogenesis

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Molecular Plant 2018年第9期11卷 1117-1134页

作者： Fei Du Chunmei Guan yuling jiao State Key Laboratory of Plant Genomics Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China College of Life Sciences University of Chinese Academy of Sciences Beijing 100049 China These authors contributed equally to this article

Plants maintain the ability to form lateral appendages throughout their life cycle and form leaves as the principal lateral appendages of the stem. Leaves initiate at the peripheral zone of the shoot apical meristem and then develop into flattened structures. In most plants, the leaf functions as a solar panel, where photosynthesis converts carbon dioxide and water into carbohydrates and oxygen. To produce structures that can optimally fulfill this function, plants precisely control the initiation, shape, and polarity of leaves. Moreover, leaf development is highly flexible but follows common themes with conserved regulatory mechanisms. Leaves may have evolved from lateral branches that are converted into determinate, flattened structures. Many other plant parts, such as floral organs, are considered specialized leaves, and thus leaf development underlies their morphogenesis. Here, we review recent advances in the understanding of how threedimensional leaf forms are established. We focus on how genes, phytohormones, and mechanical properties modulate leaf development, and discuss these factors in the context of leaf initiation, polarity establishment and maintenance, leaf flattening, and intercalary growth.

关键词： leaf lateral organ morphogenesis meristem blastozone shoot

Variable Selection via Generalized SELO-Penalized Cox Regression Models

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Journal of Systems Science & Complexity 2019年第2期32卷 709-736页

作者： SHI Yueyong XU Deyi CAO Yongxiu jiao yuling School of Economics and Management China University of Geosciences Center for Resources and Environmental Economic Research China University of Geosciences School of Statistics and Mathematics Zhongnan University of Economics and Law

The seamless-L_0(SELO) penalty is a smooth function that very closely resembles the L_0 penalty, which has been demonstrated theoretically and practically to be effective in nonconvex penalization for variable selection. In this paper, the authors first generalize the SELO penalty to a class of penalties retaining good features of SELO, and then develop variable selection and parameter estimation in Cox models using the proposed generalized SELO(GSELO) penalized log partial likelihood(PPL) approach. The authors show that the GSELO-PPL procedure possesses the oracle property with a diverging number of predictors under certain mild, interpretable regularity conditions. The entire path of GSELO-PPL estimates can be efficiently computed through a smoothing quasi-Newton(SQN) with continuation algorithm. The authors propose a consistent modified BIC(MBIC) tuning parameter selector for GSELO-PPL, and show that under some regularity conditions, the GSELOPPL-MBIC procedure consistently identifies the true model. Simulation studies and real data analysis are conducted to evaluate the finite sample performance of the proposed method.

关键词： Continuation Cox models generalized SELO modified BIC penalized likelihood smoothing quasi-Newton

Advances in plant cell type-specific genome-wide studies of gene expression

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Frontiers in Biology 2011年第5期6卷 384-389页

作者： Ying WANG yuling jiao Division of Biology California Institute of TechnologyPasadenaCA 91125USA State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

Cell is the functional unit of *** study the complex interactions of systems of biological molecules,it is crucial to dissect these molecules at the cell *** recent years,major progresses have been made by plant biologists to profile gene expression in specific cell types at the genome-wide *** based on the isolation of cells,polysomes or nuclei have been developed and successfully used for studying the cell types from distinct organs of several plant *** cell-level data sets revealed previously unrecognized cellular properties,such as cell-specific gene expression modules and hormone response centers,and should serve as essential resources for functional genomic *** developed technologies are more affordable to many laboratories and should help to provide new insights at the cellular resolution in the near future.

关键词： transcriptome cell type plant

Condensation of STM is critical for shoot meristem maintenance and salt tolerance in Arabidopsis

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Molecular Plant 2023年第9期16卷 1445-1459页

作者： Xiuwei Cao Qingwei Du Yahe Guo Ying Wang yuling jiao State Key Laboratory of Plant Genomics and National Center for Plant Gene Research(Beijing) Institute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China Beijing Agro-Biotechnology Research Center Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China State Key Laboratory of Protein and Plant Gene Research School of Life SciencesPeking UniversityBeijing 100871China Peking-Tsinghua Center for Life Sciences Center for Quantitative BiologyAcademy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China Peking University Institute of Advanced Agricultural Sciences Shandong Laboratory of Advanced Agricultural Sciences in WeifangWeifangShandong 261325China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China

The shoot meristem generates the entire shoot system and is precisely maintained throughout the life cycle under various environmental *** this study,we identified a prion-like domain(PrD)in the key shoot meristem regulator SHOOT MERISTEMLESS(STM),which distinguishes STM from other related KNOX1 *** demonstrated that PrD stimulates STM to form nuclear condensates,which are required for maintaining the shoot *** nuclear condensate formation is stabilized by selected PrD-containing STM-interacting BELL proteins in vitro and in ***,condensation of STM promotes its interaction with the Mediator complex subunit MED8 and thereby enhances its transcriptional ***,condensate formation emerges as a novel regulatory mechanism of shoot meristem ***,we found that the formation of STM condensates is enhanced upon salt stress,which allows enhanced salt tolerance and increased shoot *** findings highlight that the transcription factor partitioning plays an important role in cell fate determination and might also act as a tunable environmental acclimation mechanism.

关键词： intrinsically disordered proteins KNOX1 shoot apical meristem biomolecular condensate salt stress axillary meristem