PLETHORA transcription factors orchestrate de novo organ patterning during Arabidopsis lateral root outgrowth

Proceedings of the National Academy of Sciences of the United States of America
Yujuan Du, Ben Scheres

Abstract

Plant development is characterized by repeated initiation of meristems, regions of dividing cells that give rise to new organs. During lateral root (LR) formation, new LR meristems are specified to support the outgrowth of LRs along a new axis. The determination of the sequential events required to form this new growth axis has been hampered by redundant activities of key transcription factors. Here, we characterize the effects of three PLETHORA (PLT) transcription factors, PLT3, PLT5, and PLT7, during LR outgrowth. In plt3plt5plt7 triple mutants, the morphology of lateral root primordia (LRP), the auxin response gradient, and the expression of meristem/tissue identity markers are impaired from the "symmetry-breaking" periclinal cell divisions during the transition between stage I and stage II, wherein cells first acquire different identities in the proximodistal and radial axes. Particularly, PLT1, PLT2, and PLT4 genes that are typically expressed later than PLT3, PLT5, and PLT7 during LR outgrowth are not induced in the mutant primordia, rendering "PLT-null" LRP. Reintroduction of any PLT clade member in the mutant primordia completely restores layer identities at stage II and rescues mutant defects in meristem and tissue est...Continue Reading

References

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Citations

Nov 28, 2018·Journal of Experimental Botany·Hans Motte, Tom Beeckman
Jan 31, 2019·Chemistry : a European Journal·Jiakun XuZhiqi Cong
Apr 4, 2019·Frontiers in Plant Science·Héctor H Torres-MartínezJoseph G Dubrovsky
Mar 2, 2019·Annual Review of Plant Biology·Hans MotteTom Beeckman
Jun 27, 2018·Cellular and Molecular Life Sciences : CMLS·Wu LiuLin Xu
Mar 8, 2019·Frontiers in Plant Science·Tao FangTom Beeckman
Jan 3, 2018·Plant & Cell Physiology·Xin TianJian Xu
Jan 18, 2021·Current Opinion in Plant Biology·Takashi SoyanoMakoto Hayashi
Nov 10, 2017·Current Opinion in Plant Biology·Ben Scheres, Beth A Krizek
Apr 4, 2021·International Journal of Molecular Sciences·Jeroen de KeijzerViola Willemsen
Nov 6, 2018·Developmental Biology·Kirsten Ten Tusscher
Aug 1, 2019·Trends in Plant Science·Jason BandaMalcolm J Bennett
Apr 10, 2020·Frontiers in Plant Science·Tingting JingRalf Müller-Xing
May 22, 2021·Frontiers in Plant Science·Laura Serrano-RonMiguel A Moreno-Risueno
Jan 29, 2021·Plant & Cell Physiology·Laura RavazzoloSilvia Quaggiotti
Jun 22, 2021·Frontiers in Plant Science·Tingting JingRalf Müller-Xing
Jun 10, 2021·Journal of Experimental Botany·Valentin HammoudiHarrold A van den Burg
Aug 4, 2021·Developmental Cell·Thea van den BergKirsten Ten Tusscher
Aug 6, 2021·Chemistry : a European Journal·Rebecca R ChaoStephen G Bell
Mar 27, 2021·Plant Physiology·Pierre-Mathieu PélissierTom Beeckman
Sep 21, 2021·Chembiochem : a European Journal of Chemical Biology·Libo Zhang, Qian Wang

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