|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | ROP GTPase-mediated auxin signaling regulates pavement cell interdigitation in Arabidopsis thaliana显示文摘In multicellular plant organs, cell shape formation depends on molecular switches to transduce developmental or environmental signals and to coordinate cell‐to‐cell communication. Plants have a specific subfamily of the Rho GT Pase family, usually called Rho of Plants(ROP), which serve as a critical signal transducer involved in many cellular processes. In the last decade, important advances in the ROP‐mediated regulation of plant cell morphogenesis have been made by using Arabidopsis thaliana leaf and cotyledon pavement cells.Especially, the auxin‐ROP signaling networks have been demonstrated to control interdigitated growth of pavement cells to form jigsaw‐puzzle shapes. Here, we review findings related to the discovery of this novel auxin‐signaling mechanism at the cell surface. This signaling pathway is to a large extent independent of the well‐known Transport Inhibitor Response(TIR)–Auxin Signaling F‐Box(AFB) pathway, and instead requires Auxin Binding Protein 1(ABP1) interaction with the plasma membrane‐localized, transmembrane kinase(TMK) receptor‐like kinase to regulate ROP proteins. Once activated, ROP influences cytoskeletal organization and inhibits endocytosis of the auxin transporter PIN1. The present review focuses on ROP signaling and its self‐organizing feature allowing ROP proteins to serve as a bustling signal decoder and integrator for plant cell morphogenesis. | Deshu Lin Huibo Ren Ying Fu | 2015 | Journal of Integrative Plant Biology2015，57，1： | 9 |
| 2 | Phosphorylation switch modulates the interdigitated pattern of PIN1 localization and cell expansion in Arabidopsis leaf epidermis显示文摘在多细胞的纸巾以内,房间可以并列地形成一单个或多重的极的轴,而是它是不清楚的普通机制是否管理极的轴形成的不同类型。大头针蛋白质的 phosphorylation 地位,被 PINOID (PID ) 蛋白质 kinase 和 PP2A 蛋白质磷酸酶直接影响,被知道在根和射击顶的双极的房间调整大头针本地化的顶端基础的极性。这里,我们提供证据 phosphorylation 调停地位的大头针极性开关广泛地被用来与交错的脑叶和缩进包括多极的人行道房间(PC ) 在 Arabidopsis 调制细胞的进程。当 FYPP1 基因,编码称为联系 phytochrome 的 serine/threonine 蛋白质磷酸酶的 PP2A,被击倒时或当 PID 基因是 overexpressed (35S::PID ) 时, PC interdigitation 的度也极大地被减少。这些基因修正引起了 PIN1 本地化从脑叶切换到缩进区域。PP2A 和 PID 调停了 PIN1 本地化切换惊人地类似于他们在另外的房间的大头针蛋白质的顶端基础的极性开关的规定。我们的调查结果为 PIN1 极性形成,在织物 / 器官两个都为模式形成是关键的一个基本细胞的过程和细胞的层次的规定建议普通机制。 | Hongjiang Li Deshu Lin Pankaj Dhonukshe Shingo Nagawa Dandan Chen Jifi Friml Ben Scheres Hongwei Guo Zhenbiao Yang | 2011 | Cell Research2011，21，6： | 7 |
| 3 | Cytokinin signaling regulates pavement cell morphogenesis in Arabidopsis显示文摘难题有交错的脑叶的塑造片的 Arabidopsis 叶人行道房间(PC ) 并且缩排是一个好模型系统调查在纸巾以内协调房间极性和形状形成的机制。植物生长素被显示了 GTPase 依赖的发信号由激活 ROP 协调 interdigitation 小径。识别另外的部件或机制,我们与反常 PC 形态发生为异种屏蔽了并且发现细胞激动素发信号调整 PC interdigitation 模式。在细胞激动素累积的减小和在细胞激动素发信号的缺点(例如在 ARR7-over-expressing 线, ahk3cre1 细胞激动素受体异种,和 ahp12345 细胞激动素表明异种) 提高的 PC interdigitation,而细胞激动素的生产过剩和细胞激动素在一根 ARR20 在表示上线发信号的在激活上在整个子叶推迟了或废除 PC interdigitation。基因、生物化学的分析建议表明 ROP 在上游的行为压制交错的模式的形成的那细胞激动素。我们的结果提供控制 PC 形状的小径的新奇机械学的理解并且揭开为细胞激动素在房间形态发生发信号的一个新角色。 | Hongjiang Li Tongda Xu Deshu Lin Mingzhang Wen M ingtang Xie Jērōme Duclercq Agnieszka Bielach Jungmook Kim G Venugopala Reddy Jianru Zuo Eva Benková Jiгi Friml Hongwei Guoz Zhenbiao Yang | 2013 | Cell Research2013，23，2： | 2 |
| 4 | PP2A interacts with KATANIN to promote microtubule organization and conical cell morphogenesis显示文摘The organization of the microtubule cytoskeleton is critical for cell and organ morphogenesis.The evolutionarily conserved microtubule-severing enzyme KATANIN plays critical roles in microtubule organization in the plant and animal kingdoms.We previously used conical cell of Arabidopsis thaliana petals as a model system to investigate cortical microtubule organization and cell morphogenesis and determined that KATANIN promotes the formation of circumferential cortical microtubule arrays in conical cells.Here,we demonstrate that the conserved protein phosphatase PP2A interacts with and dephosphorylates KATANIN to promote the formation of circumferential cortical microtubule arrays in conical cells.KATANIN undergoes cycles of phosphorylation and dephosphorylation.Using co-immunoprecipitation coupled with mass spectrometry,we identified PP2A subunits as KATANIN-interacting proteins.Further biochemical studies showed that PP2 A interacts with and dephosphorylates KATANIN to stabilize its cellular abundance.Similar to the katanin mutant,mutants for genes encoding PP2A subunits showed disordered cortical microtubule arrays and defective conical cell shape.Taken together,these findings identify PP2A as a regulator of conical cell shape and suggest that PP2A mediates KATANIN phospho-regulation during plant cell morphogenesis. | Huibo Ren Jinqiu Rao Min Tang Yaxing Li Xie Dang Deshu Lin | 2022 | Journal of Integrative Plant Biology2022，64，8： | 0 |
| 5 | Based on Compressed Sensing of Orthogonal Matching Pursuit Algorithm Image Recovery显示文摘Compressive sensing theory mainly includes the sparsely of signal processing,the structure of the measurement matrix and reconstruction algorithm.Reconstruction algorithm is the core content of CS theory,that is,through the low dimensional sparse signal recovers the original signal accurately.This thesis based on the theory of CS to study further on seismic data reconstruction algorithm.We select orthogonal matching pursuit algorithm as a base reconstruction algorithm.Then do the specific research for the implementation principle,the structure of the algorithm of AOMP and make the signal simulation at the same time.In view of the OMP algorithm reconstruction speed is slow and the problems need to be a given number of iterations,which developed an improved scheme.We combine the optimized OMP algorithm of constraint the optimal matching of item selection strategy,the backwards gradient projection ideas of adaptive variance step gradient projection method and the original algorithm to improve it.Simulation experiments show that improved OMP algorithm is superior to traditional OMP algorithm of improvement in the reconstruction time and effect under the same condition.This paper introduces CS and most mature compressive sensing algorithm at present orthogonal matching pursuit algorithm.Through the program design realize basic orthogonal matching pursuit algorithms,and design realize basic orthogonal matching pursuit algorithm of one-dimensional,two-dimensional signal processing simulation. | Caifeng Cheng Deshu Lin | 2020 | Journal on Internet of Things2020，2，1： | 0 |
| 6 | Image Reconstruction Based on Compressed Sensing Measurement Matrix Optimization Method显示文摘In this paper,the observation matrix and reconstruction algorithm of compressed sensing sampling theorem are studied.The advantages and disadvantages of greedy reconstruction algorithm are analyzed.The disadvantages of signal sparsely are preset in this algorithm.The sparsely adaptive estimation algorithm is proposed.The compressed sampling matching tracking algorithm supports the set selection and culling atomic standards to improve.The sparse step size adaptive compressed sampling matching tracking algorithm is proposed.The improved algorithm selects the sparsely as the step size to select the support set atom,and the maximum correlation value.Half of the threshold culling algorithm supports the concentration of excess atoms.The experimental results show that the improved algorithm has better power and lower image reconstruction error under the same sparsely criterion,and has higher image reconstruction quality and visual effects. | Caifeng Cheng Deshu Lin | 2020 | Journal on Internet of Things2020，2，1： | 0 |
| 7 | Research on Efficient Seismic Data Acquisition Methods Based on Sparsity Constraint显示文摘In actual exploration,the demand for 3D seismic data collection is increasing,and the requirements for data are becoming higher and higher.Accordingly,the collection cost and data volume also increase.Aiming at this problem,we make use of the nature of data sparse expression,based on the theory of compressed sensing,to carry out the research on the efficient collection method of seismic data.It combines the collection of seismic data and the compression in data processing in practical work,breaking through the limitation of the traditional sampling frequency,and the sparse characteristics of the seismic signal are utilized to reconstruct the missing data.We focus on the key elements of the sampling matrix in the theory of compressed sensing,and study the methods of seismic data acquisition.According to the conditions that the compressed sensing sampling matrix needs to meet,we introduce a new random acquisition scheme,which introduces the widely used Low-density Parity-check(LDPC)sampling matrix in image processing into seismic exploration acquisition.Firstly,its properties are discussed and its conditions for satisfying the sampling matrix in compressed sensing are verified.Then the LDPC sampling method and the conventional data acquisition method are used to synthesize seismic data reconstruction experiments.The reconstruction results,signal-to-noise ratio and reconstruction error are compared to verify the seismic data based on sparse constraints.The LDPC sampling method improves the current seismic data reconstruction efficiency,reduces the exploration cost and the effectiveness and feasibility of the method. | Caifeng Cheng Xiang’e Sun Deshu Lin Yiliu Tu | 2020 | Computers, Materials & Continua2020，，7： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员