气候变化领域集成服务门户(CCPortal): Local auxin biosynthesis acts downstream of brassinosteroids to trigger root foraging for nitrogen

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DOI	10.1038/s41467-021-25250-x
	Local auxin biosynthesis acts downstream of brassinosteroids to trigger root foraging for nitrogen
	Jia Z.; Giehl R.F.H.; von Wirén N.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Lateral roots (LRs) dominate the overall root surface of adult plants and are crucial for soil exploration and nutrient acquisition. When grown under mild nitrogen (N) deficiency, flowering plants develop longer LRs to enhance nutrient acquisition. This response is partly mediated by brassinosteroids (BR) and yet unknown mechanisms. Here, we show that local auxin biosynthesis modulates LR elongation while allelic coding variants of YUCCA8 determine the extent of elongation under N deficiency. By up-regulating the expression of YUCCA8/3/5/7 and of Tryptophan Aminotransferase of Arabidopsis 1 (TAA1) under mild N deficiency auxin accumulation increases in LR tips. We further demonstrate that N-dependent auxin biosynthesis in LRs acts epistatic to and downstream of a canonical BR signaling cascade. The uncovered BR-auxin hormonal module and its allelic variants emphasize the importance of fine-tuning hormonal crosstalk to boost adaptive root responses to N availability and offer a path to improve soil exploration by expanded root systems in plants. © 2021, The Author(s).
语种	英语
scopus关键词	aminotransferase; auxin; brassinolide; brassinosteroid; bsk3 protein; bsk4 protein; bsk7 protein; bsk8 protein; bzr1 protein; bzrd protein; indoleacetic acid; leucine; nitrogen; protein; serine; transcription factor; transcription factor agl21; tryptophan aminotransferase; tryptophan aminotransferase of arabidopsis 1; unclassified drug; unspecific monooxygenase; yucca3 protein; yucca5 protein; yucca7 protein; yucca8 protein; Arabidopsis protein; brassinosteroid; cytochrome P450; indoleacetic acid derivative; isoprotein; mixed function oxidase; nitrogen; phytohormone; tryptophan aminotransferase; YUC5 protein, Arabidopsis; YUCCA8 protein, Arabidopsis; accumulation; adult; allele; angiosperm; flowering; nitrogen; nutrient dynamics; phytohormone; root system; Arabidopsis; Arabidopsis thaliana; Article; bioaccumulation; biological trait; biosynthesis; cell elongation; controlled study; epistasis; foraging; gene frequency; gene mapping; genetic analysis; genetic variability; genetic variation; genome-wide association study; lateral root; nonhuman; plant root; protein expression; root growth; root system; signal transduction; soil; upregulation; yucca; chemistry; gene expression regulation; genetics; growth, development and aging; metabolism; plant root; transgenic plant; Arabidopsis; Magnoliophyta; Arabidopsis; Arabidopsis Proteins; Brassinosteroids; Cytochrome P-450 Enzyme System; Gene Expression Regulation, Developmental; Gene Expression Regulation, Plant; Indoleacetic Acids; Mixed Function Oxygenases; Nitrogen; Plant Growth Regulators; Plant Roots; Plants, Genetically Modified; Protein Isoforms; Signal Transduction; Soil; Tryptophan Transaminase
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251354
作者单位	Molecular Plant Nutrition, Dept. Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research, Stadt Seeland, OT Gatersleben, Germany
推荐引用方式 GB/T 7714	Jia Z.,Giehl R.F.H.,von Wirén N.. Local auxin biosynthesis acts downstream of brassinosteroids to trigger root foraging for nitrogen[J],2021,12(1).
APA	Jia Z.,Giehl R.F.H.,&von Wirén N..(2021).Local auxin biosynthesis acts downstream of brassinosteroids to trigger root foraging for nitrogen.Nature Communications,12(1).
MLA	Jia Z.,et al."Local auxin biosynthesis acts downstream of brassinosteroids to trigger root foraging for nitrogen".Nature Communications 12.1(2021).