- 作 者: ( "limin pi" OR "li-min pi" )
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BIG Modulates Stem Cell Niche and Meristem Development via SCR/SHR Pathway in Arabidopsis RootsInternational Journal of Molecular Sciences (IF 4.556) Pub Date : 2022-06-17 ,DOI:10.3390/ijms23126784Zhongming Liu, Ruo-Xi Zhang, Wen Duan, Baoping Xue, Xinyue Pan, Shuangchen Li, Peng Sun, Limin Pi, Yun-Kuan Liang
BIG, a regulator of polar auxin transport, is necessary to regulate the growth and development of Arabidopsis. Although mutations in the BIG gene cause severe root developmental defects, the exact mechanism remains unclear. Here, we report that disruption of the BIG gene resulted in decreased quiescent center (QC) activity and columella cell numbers, which was accompanied by the downregulation of WUSCHEL-RELATED
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Replication protein RPA2A regulates floral transition by cooperating with PRC2 in ArabidopsisNew Phytologist (IF 10.323) Pub Date : 2022-05-28 ,DOI:10.1111/nph.18279Xiaoling Zhang, Wenjuan Li, Yue Liu, Yanzhuo Li, Yang Li, Wandong Yang, Xiangsong Chen, Limin Pi, Hongchun YangRPA2A is a subunit of the conserved heterotrimeric replication protein A (RPA) in Arabidopsis, which is an essential replisome component that binds to single-stranded DNA during DNA replication. RPA2A controls a set of developmental processes, but the underlying mechanism is largely unknown. ...
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Control of Root Stem Cell Differentiation and Lateral Root Emergence by CLE16/17 Peptides in Arabidopsis.Frontiers in Plant Science (IF 6.627) Pub Date : 2022-04-18 ,DOI:10.3389/fpls.2022.869888Lihua Zhang,Yi Yang,Changqing Mu,Mingyu Liu,Takashi Ishida,Shinichiro Sawa,Yuxian Zhu,Limin Pi
Secreted peptide-mediated cell-to-cell communication plays a crucial role in the development of multicellular organisms. A large number of secreted peptides have been predicated by bioinformatic approaches in plants. However, only a few of them have been functionally characterized. In this study, we show that two CLAVATA3/EMBRYO SURROUNDING REGION-RELATED (CLE) peptides CLE16/17 are required for both
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Phase-separated TRB-PRC2 aggregates contribute to Polycomb silencing in plantsbioRxiv - Plant Biology Pub Date : 2022-03-28 ,DOI:10.1101/2022.03.27.485997Hua Xuan, Yue Liu, Jingze zhao, Nan Shi, Yanzhuo Li, Yulu Zhou, Limin Pi, Shaoqing Li, Guoyong Xu, Hongchun Yang
Local accumulation of Polycomb Repressive Complex 2 (PRC2) is essential to gene silencing. Liquid-liquid phase separation (LLPS) mechanism is emerging as a paradigm to concentrate transcriptional machinery for effective gene regulation. Here, we elucidate that a rice single Myb transcription factor TRBF2 forms phase-separated droplets, which aggregate with PRC2 through direct protein interaction. Furthermore
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Intersected functional zone of transcriptional regulators patterns stemness within stem cell niche of root apical meristem.Journal of Integrative Plant Biology (IF 9.106) Pub Date : 2020-03-02 ,DOI:10.1111/jipb.12881Meizhi Xu,Xu Gu,Nengsong Liang,Xinxin Bian,Hong Wang,Yaxin Qin,Limin Pi,Shuang WuRoot stem cell niche (SCN) consists of a quiescent center (QC) and surrounding stem cells. Disrupted symplastic communication leads to loss of stemness in the whole SCN. Several SCN regulators were reported to move between cells for SCN maintenance. However, single mutant of these regulators is insufficient to abolish QC stemness despite the high differentiation rate in surrounding stem cells. To dissect ...
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Organizer-Derived WOX5 Signal Maintains Root Columella Stem Cells through Chromatin-Mediated Repression of CDF4 ExpressionDevelopmental Cell (IF 13.417) Pub Date : 2015-05-28 ,DOI:10.1016/j.devcel.2015.04.024Limin Pi,Ernst Aichinger,Eric van der Graaff,Cristina I. Llavata-Peris,Dolf Weijers,Lars Hennig,Edwin Groot,Thomas Laux
Stem cells in plants and animals are maintained pluripotent by signals from adjacent niche cells. In plants, WUSCHEL HOMEOBOX (WOX) transcription factors are central regulators of stem cell maintenance in different meristem types, yet their molecular mode of action has remained elusive. Here we show that in the Arabidopsis root meristem, the WOX5 protein moves from the root niche organizer, the quiescent
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ATH1 and KNAT2 proteins act together in regulation of plant inflorescence architecture.Journal of Experimental Botany (IF 7.298) Pub Date : 2011-12-06 ,DOI:10.1093/jxb/err376Yang Li,Limin Pi,Hai Huang,Lin Xu
The inflorescence of flowering plants is a highly organized structure, not only contributing to plant reproductive processes, but also constituting an important part of the entire plant morphology. Previous studies have revealed that the class-I KNOTTED1-like homeobox (KNOX) genes BREVIPEDICELLUS (BP or KNAT1), KNAT2, and KNAT6 play essential roles in inflorescence architecture. Pedicel morphology
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1-[(Phenyl-iminio)amino]-2-naphtho-late.Acta Crystallographica Section E Structure Reports Online Pub Date : 2010-06-23 ,DOI:10.1107/s1600536810023329Ji-Jun Xu,Jun Li,Min Pi,Chuan-Ming Jin
In the zwitterionic title compound, C(16)H(12)N(2)O, the dihedral angle between the benzene ring and naphthalene ring system is 2.0 (1)°. The azo group adopts a trans configuration and an intra-molecular N-H⋯O hydrogen bond is found. In the crystal, the mol-ecules are packed by strong π-π inter-actions [centroid-centroid distance between aromatic rings = 3.375 (3) Å].
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The ARGONAUTE10 gene modulates shoot apical meristem maintenance and establishment of leaf polarity by repressing miR165/166 in ArabidopsisThe Plant Journal (IF 7.091) Pub Date : 2008-12-29 ,DOI:10.1111/j.1365-313x.2008.03757.xQili Liu, Xiaozhen Yao, Limin Pi, Hua Wang, Xiaofeng Cui, Hai HuangThe shoot apical meristem (SAM) of angiosperms comprises a group of undifferentiated cells which divide to maintain the meristem and also give rise to all the above‐ground structures of the plant. Previous studies revealed that the Arabidopsis ARGONAUTE10 [AGO10, also called PINHEAD (PNH) or ZWILLE (ZLL)] gene is one of the critical SAM regulators, but the mechanism by which AGO10 modulates the SAM ...
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The ARGONAUTE10 gene modulates shoot apical meristem maintenance and establishment of leaf polarity by repressing miR165/166 in Arabidopsis.The Plant Journal (IF 7.091) Pub Date : 2008-12-05 ,DOI:10.1111/j.1365-313x.2008.03757.xQili Liu,Xiaozhen Yao,Limin Pi,Hua Wang,Xiaofeng Cui,Hai HuangThe shoot apical meristem (SAM) of angiosperms comprises a group of undifferentiated cells which divide to maintain the meristem and also give rise to all the above-ground structures of the plant. Previous studies revealed that the Arabidopsis ARGONAUTE10 [AGO10, also called PINHEAD (PNH) or ZWILLE (ZLL)] gene is one of the critical SAM regulators, but the mechanism by which AGO10 modulates the SAM ...
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The proteolytic function of the Arabidopsis 26S proteasome is required for specifying leaf adaxial identity.The Plant Cell (IF 12.085) Pub Date : 2006-10-10 ,DOI:10.1105/tpc.106.045013Weihua Huang,Limin Pi,Wanqi Liang,Ben Xu,Hua Wang,Run Cai,Hai Huang
Polarity formation is central to leaf morphogenesis, and several key genes that function in adaxial-abaxial polarity establishment have been identified and characterized extensively. We previously reported that Arabidopsis thaliana ASYMMERTIC LEAVES1 (AS1) and AS2 are important in promoting leaf adaxial fates. We obtained an as2 enhancer mutant, asymmetric leaves enhancer3 (ae3), which demonstrated
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Genetic Interaction between the AS1–AS2 and RDR6–SGS3–AGO7 Pathways for Leaf MorphogenesisPlant & Cell Physiology (IF 4.937) Pub Date : 2006-07-01 ,DOI:10.1093/pcp/pcj057Lin Xu, Li Yang, Limin Pi, Qili Liu, Qihua Ling, Hua Wang, R. Scott Poethig, Hai Huang
In higher plants, class I KNOTTED1-like homeobox (KNOX) gene suppression and leaf polarity establishment are two processes crucial for leaf morphogenesis. The Arabidopsis genes, ASYMMETRIC LEAVES1 and 2 (AS1 and AS2), are required for repressing the class I KNOX genes and promoting leaf adaxial cell fates. In addition, the RNA-DEPENDENT RNA POLYMERASE6 (RDR6) gene acts synergistically with AS1 and
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Genetic interaction between the AS1-AS2 and RDR6-SGS3-AGO7 pathways for leaf morphogenesis.Plant & Cell Physiology (IF 4.937) Pub Date : 2006-05-16 ,DOI:10.1093/pcp/pcj057Lin Xu,Li Yang,Limin Pi,Qili Liu,Qihua Ling,Hua Wang,R Scott Poethig,Hai Huang
In higher plants, class I KNOTTED1-like homeobox (KNOX) gene suppression and leaf polarity establishment are two processes crucial for leaf morphogenesis. The Arabidopsis genes, ASYMMETRIC LEAVES1 and 2 (AS1 and AS2), are required for repressing the class I KNOX genes and promoting leaf adaxial cell fates. In addition, the RNA-DEPENDENT RNA POLYMERASE6 (RDR6) gene acts synergistically with AS1 and
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Novel as1 and as2 defects in leaf adaxial-abaxial polarity reveal the requirement for ASYMMETRIC LEAVES1 and 2 and ERECTA functions in specifying leaf adaxial identity.Development (IF 6.862) Pub Date : 2003-07-23 ,DOI:10.1242/dev.00622Lin Xu,Yi Xu,Aiwu Dong,Yue Sun,Limin Pi,Yuquan Xu,Hai Huang
The shoot apical meristem (SAM) of seed plants is the site at which lateral organs are formed. Once organ primordia initiate from the SAM, they establish polarity along the adaxial-abaxial, proximodistal and mediolateral axes. Among these three axes, the adaxial-abaxial polarity is of primary importance in leaf patterning. In leaf development, once the adaxial-abaxial axis is established within leaf
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