气候变化领域集成服务门户(CCPortal): Perturbations in plant energy homeostasis prime lateral root initiation via SnRK1-bZIP63-ARF19 signaling

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DOI	10.1073/pnas.2106961118
	Perturbations in plant energy homeostasis prime lateral root initiation via SnRK1-bZIP63-ARF19 signaling
	Muralidhara P.; Weiste C.; Collani S.; Krischke M.; Kreisz P.; Draken J.; Feil R.; Mair A.; Teige M.; Müller M.J.; Schmid M.; Becker D.; Lunn J.E.; Rolland F.; Hanson J.; Dröge-Laser W.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:37
英文摘要	Plants adjust their energy metabolism to continuous environmental fluctuations, resulting in a tremendous plasticity in their architecture. The regulatory circuits involved, however, remain largely unresolved. In Arabidopsis, moderate perturbations in photosynthetic activity, administered by short-term low light exposure or unexpected darkness, lead to increased lateral root (LR) initiation. Consistent with expression of low-energy markers, these treatments alter energy homeostasis and reduce sugar availability in roots. Here, we demonstrate that the LR response requires the metabolic stress sensor kinase Snf1-RELATED-KINASE1 (SnRK1), which phosphorylates the transcription factor BASIC LEUCINE ZIPPER63 (bZIP63) that directly binds and activates the promoter of AUXIN RESPONSE FACTOR19 (ARF19), a key regulator of LR initiation. Consistently, starvation-induced ARF19 transcription is impaired in bzip63 mutants. This study highlights a positive developmental function of SnRK1. During energy limitation, LRs are initiated and primed for outgrowth upon recovery. Hence, this study provides mechanistic insights into how energy shapes the agronomically important root system. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	ARF19; BZIP63; Lateral root; Metabolic homeostasis; SnRK1
语种	英语
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/238386
作者单位	Department of Pharmaceutical Biology, Julius-von-Sachs-Institute, Biocenter. Julius-Maximilians Universität Würzburg, Würzburg, 97082, Germany; Umeå Plant Science Center, Department of Plant Physiology, Umeå University, Umeå, SE-901 87, Sweden; Department of Metabolic networks, Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, 14476, Germany; Department of Biology, Stanford University, Stanford, CA 94305, United States; Department of Biochemistry and Cell Biology, University of Vienna, Vienna, 1030, Austria; Department of Molecular Systems Biology, University of Vienna, Vienna, 1030, Austria; Institute for Molecular Plant Physiology and Biophysics, University of Würzburg, Würzburg, D-97082, Germany; Laboratory of Molecular Plant Biology, Department of Biology, Katholieke Universiteit Leuven, Leuven, B-3001, Belgium; KU Leuven Plant Institute (LPI), Heverlee-Leuven, 3001, Belgium
推荐引用方式 GB/T 7714	Muralidhara P.,Weiste C.,Collani S.,et al. Perturbations in plant energy homeostasis prime lateral root initiation via SnRK1-bZIP63-ARF19 signaling[J],2021,118(37).
APA	Muralidhara P..,Weiste C..,Collani S..,Krischke M..,Kreisz P..,...&Dröge-Laser W..(2021).Perturbations in plant energy homeostasis prime lateral root initiation via SnRK1-bZIP63-ARF19 signaling.Proceedings of the National Academy of Sciences of the United States of America,118(37).
MLA	Muralidhara P.,et al."Perturbations in plant energy homeostasis prime lateral root initiation via SnRK1-bZIP63-ARF19 signaling".Proceedings of the National Academy of Sciences of the United States of America 118.37(2021).