气候变化领域集成服务门户(CCPortal): Symplastic communication spatially directs local auxin biosynthesis to maintain root stem cell niche in Arabidopsis

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DOI	10.1073/pnas.1616387114
	Symplastic communication spatially directs local auxin biosynthesis to maintain root stem cell niche in Arabidopsis
	Liu Y.; Xu M.; Liang N.; Zheng Y.; Yu Q.; Wu S.
发表日期	2017
ISSN	0027-8424
起始页码	4005
结束页码	4010
卷号	114 期号:15
英文摘要	Stem cells serve as the source of new cells for plant development. A group of stem cells form a stem cell niche (SCN) at the root tip and in the center of the SCN are slowly dividing cells called the quiescent center (QC). QC is thought to function as a signaling hub that inhibits differentiation of surrounding stem cells. Although it has been generally assumed that cell-to-cell communication provides positional information for QC and SCN maintenance, the tools for testing this hypothesis have long been lacking. Here we exploit a system that effectively blocks plasmodesmata (PD)-mediated signaling to explore how cell-to-cell communication functions in the SCN. We showed that the symplastic signaling between the QC and adjacent cells directs the formation of local auxin maxima and establishment of AP2-domain transcription factors, PLETHORA gradients. Interestingly we found symplastic signaling is essential for local auxin biosynthesis, which acts together with auxin polar transport to provide the guidance for local auxin enrichment. Therefore, we demonstrate the crucial role of cell-to-cell communication in the SCN maintenance and further uncover a mechanism by which symplastic signaling initiates and reinforces the positional information during stem cell maintenance via auxin regulation. © 2017, National Academy of Sciences. All rights reserved.
英文关键词	Arabidopsis; Auxin; PLETHORA; Stem cell niche; Symplastic signaling
语种	英语
scopus关键词	auxin; Arabidopsis protein; callose; glucan; green fluorescent protein; homeodomain protein; indoleacetic acid derivative; WUSCHEL protein, Arabidopsis; Arabidopsis; Article; biosynthesis; cell communication; cell differentiation; nonhuman; plant development; plant root; priority journal; quiescent center; regulatory mechanism; stem cell niche; symplastic communication; Arabidopsis; cytology; gene expression regulation; genetics; metabolism; plant cell; plasmodesma; signal transduction; transgenic plant; Arabidopsis; Arabidopsis Proteins; Gene Expression Regulation, Plant; Glucans; Green Fluorescent Proteins; Homeodomain Proteins; Indoleacetic Acids; Plant Cells; Plant Roots; Plants, Genetically Modified; Plasmodesmata; Signal Transduction
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160645
作者单位	Liu, Y., College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China, Horticultural Plant Biology and Metabolomics Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China; Xu, M., College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China, Horticultural Plant Biology and Metabolomics Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China; Liang, N., Horticultural Plant Biology and Metabolomics Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China; Zheng, Y., Horticultural Plant Biology and Metabolomics Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China; Yu, Q., College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian ...
推荐引用方式 GB/T 7714	Liu Y.,Xu M.,Liang N.,et al. Symplastic communication spatially directs local auxin biosynthesis to maintain root stem cell niche in Arabidopsis[J],2017,114(15).
APA	Liu Y.,Xu M.,Liang N.,Zheng Y.,Yu Q.,&Wu S..(2017).Symplastic communication spatially directs local auxin biosynthesis to maintain root stem cell niche in Arabidopsis.Proceedings of the National Academy of Sciences of the United States of America,114(15).
MLA	Liu Y.,et al."Symplastic communication spatially directs local auxin biosynthesis to maintain root stem cell niche in Arabidopsis".Proceedings of the National Academy of Sciences of the United States of America 114.15(2017).