首页|Sucrose-responsive osmoregulation of plant cell size by a long non-coding RNA

Sucrose-responsive osmoregulation of plant cell size by a long non-coding RNA

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In plants,sugars are the key source of energy and metabolic building blocks.The systemic transport of sugars is essential for plant growth and morphogenesis.Plants evolved intricate molecular networks to effectively distribute sugars.The dynamic distribution of these osmotically active compounds is a handy tool for regulating cell turgor pressure,an instructive force in developmental biology.In this study,we have investigated the molecular mechanism behind the dual role of the receptor-like kinase CANAR.We functionally characterized a long non-coding RNA,CARMA,as a negative regulator of CANAR.Sugar-responsive CARMA specifically fine-tunes CANAR expression in the phloem,the route of sugar transport.Our genetic,molecular,microscopy,and biophysical data suggest that the CARMA-CANAR module con-trols the shoot-to-root phloem transport of sugars,allows cells to flexibly adapt to the external osmolality by appropriate water uptake,and thus adjust the size of vascular cell types during organ growth and development.Our study identifies a nexus of plant vascular tissue formation with cell internal pressure monitoring,revealing a novel functional aspect of long non-coding RNAs in developmental biology.

lncRNAauxinturgorsugar transportcell size

Jakub Hajný、Tereza Trávníčková、Martina Špundová、Michelle Roenspies、R.M.Imtiaz Karim Rony、Sebastian Sacharowski、Michal Krzyszton、David Zalabák、Christian S.Hardtke、Aleš Pečinka、Holger Puchta、Szymon Swiezewski、Jaimie M.van Norman、Ondřej Novák

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Laboratory of Growth Regulators,Czech Academy of Sciences,Institute of Experimental Botany and Palacky University,Slechtitelu 27,77900 Olomouc,Czech Republic

Department of Biophysics,Faculty of Science,Palacky University,Slechtitelu 27,77900 Olomouc,Czech Republic

Joseph Gottlieb Kölreuter Institute for Plant Sciences(JKIP)-Molecular Biology,Karlsruhe Institute of Technology,76131 Karlsruhe,Germany

Department of Molecular,Cell,and Systems Biology,University of California,Riverside,CA 92521,USA

Laboratory of Seeds Molecular Biology,Institute of Biochemistry and Biophysics Polish Academy of Sciences,Pawinskiego 5a,02-106 Warsaw,Poland

Department of Plant Molecular Biology,University of Lausanne,1015 Lausanne,Switzerland

Center of Plant Structural and Functional Genomics,Institute of Experimental Botany,Czech Academy of Sciences,Šlechtitelü 31,77900 Olomouc,Czech Republic

Department of Molecular,Cell,and Developmental Biology,University of California,Los Angeles,Los Angeles,CA 90095,USA

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2024

10.1016/j.molp.2024.09.011

分子植物(英文版)
中科院上海生命科学研究院植物生理生态所　中国植物生理学会

分子植物(英文版)

CSTPCD
影响因子：0.659
ISSN：1674-2052
年,卷(期)：2024.17(11)