MicroRNA857 Is Involved in the Regulation of Secondary Growth of Vascular Tissues in Arabidopsis

doi:10.1104/pp.15.01011

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	MicroRNA857 Is Involved in the Regulation of Secondary Growth of Vascular Tissues in Arabidopsis
	Zhao, Yuanyuan ; Lin, Sen 1,4; Qiu, Zongbo 1; Cao, Dechang ; Wen, Jialong 2; Deng, Xin 1; Wang, Xiaohua 1; Lin, Jinxing ; Li, Xiaojuan
刊名	PLANT PHYSIOLOGY
	2015
卷号	169 期号:4 页码:2539-2552
ISSN号	0032-0889
DOI	10.1104/pp.15.01011
文献子类	Article
英文摘要	MicroRNAs (miRNAs) are endogenous small RNAs that repress target gene expression posttranscriptionally, and are critically involved in various developmental processes and responses to environmental stresses in eukaryotes. MiRNA857 is not widely distributed in plants and is encoded by a single gene, AtMIR857, inArabidopsis (Arabidopsis thaliana). The functions of miR857 and its mechanisms in regulating plant growth and development are still unclear. Here, by means of genetic analysis coupled with cytological studies, we investigated the expression pattern and regulation mechanism of miR857 and its biological functions in Arabidopsis development. We found that miR857 regulates its target gene, Arabidopsis LACCASE7, at the transcriptional level, thereby reducing laccase activity. Using stimulated Raman scattering and x-ray microtomography three-dimensional analyses, we showed that miR857 was involved in the regulation of lignin content and consequently morphogenesis of the secondary xylem. In addition, miR857 was activated by SQUAMOSA PROMOTER BINDING PROTEIN-LIKE7 in response to low copper conditions. Collectively, these findings demonstrate the role of miR857 in the regulation of secondary growth of vascular tissues in Arabidopsis and reveal a unique control mechanism for secondary growth based on the miR857 expression in response to copper deficiency.
学科主题	Plant Sciences
电子版国际标准刊号	1532-2548
出版地	ROCKVILLE
WOS关键词	PROMOTER-BINDING PROTEIN-LIKE7 ; LATERAL ROOT DEVELOPMENT ; LIGNIN BIOSYNTHESIS ; COPPER HOMEOSTASIS ; PLANT MICRORNAS ; DOWN-REGULATION ; THALIANA ; LACCASE ; XYLEM ; GENE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	AMER SOC PLANT BIOLOGISTS
WOS记录号	WOS:000368472700015
资助机构	Program of Introducing Talents of Discipline to Universities (111 project) [B13007] ; Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China [IRT13047] ; Major Science Foundation of Ministry of Education of China [313008] ; National Natural Science Foundation of China [31270224, 31370212] ; Fundamental Research Funds for the Central Universities [BLX2012039]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/25723]
专题	中科院北方资源植物重点实验室
作者单位	1.Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China 2.Beijing Forestry Univ, Coll Biol Sci & Biotechnol, Key Lab Genet & Breeding Forest Trees & Ornamenta, Minist Educ,Natl Engn Lab Tree Breeding, Beijing 100083, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yuanyuan,Lin, Sen,Qiu, Zongbo,et al. MicroRNA857 Is Involved in the Regulation of Secondary Growth of Vascular Tissues in Arabidopsis[J]. PLANT PHYSIOLOGY,2015,169(4):2539-2552.
APA	Zhao, Yuanyuan.,Lin, Sen.,Qiu, Zongbo.,Cao, Dechang.,Wen, Jialong.,...&Li, Xiaojuan.(2015).MicroRNA857 Is Involved in the Regulation of Secondary Growth of Vascular Tissues in Arabidopsis.PLANT PHYSIOLOGY,169(4),2539-2552.
MLA	Zhao, Yuanyuan,et al."MicroRNA857 Is Involved in the Regulation of Secondary Growth of Vascular Tissues in Arabidopsis".PLANT PHYSIOLOGY 169.4(2015):2539-2552.