Respiratory burst oxidase homologue-dependent H2 O2 and chloroplast H2 O2 are essential for the maintenance of acquired thermotolerance during recovery after acclimation

Plant, Cell & Environment
Mintao SunZhen Wu

Abstract

Thermotolerance is improved by heat stress (HS) acclimation, and the thermotolerance level is "remembered" by plants. However, the underlying signalling mechanisms remain largely unknown. Here, we showed NADPH oxidase-mediated H2 O2 (NADPH-H2 O2 ), and chloroplast-H2 O2 promoted the sustained expression of HS-responsive genes and programmed cell death (PCD) genes, respectively, during recovery after HS acclimation. When spraying the NADPH oxidase inhibitor, diphenylene iodonium, after HS acclimation, the NADPH-H2 O2 level significantly decreased, resulting in a decrease in the expression of HS-responsive genes and the loss of maintenance of acquired thermotolerance (MAT). In contrast, compared with HS acclimation, NADPH-H2 O2 declined but chloroplast-H2 O2 further enhanced during recovery after HS over-acclimation, resulting in the reduced expression of HS-responsive genes and substantial production of PCD. Notably, the further inhibition of NADPH-H2 O2 after HS over-acclimation also inhibited chloroplast-H2 O2 , alleviating the severe PCD and surpassing the MAT of HS over-acclimation treatment. Due to the change in subcellular H2 O2 after HS acclimation, the tomato seedlings maintained a constant H2 O2 level during recovery, r...Continue Reading

References

Jan 1, 1991·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·D J StuehrC F Nathan
Jun 14, 2000·Journal of Applied Physiology·N R Prabhakar
Jan 5, 2002·Proceedings of the National Academy of Sciences of the United States of America·Miguel Angel TorresJonathan D G Jones
Mar 14, 2002·Proceedings of the National Academy of Sciences of the United States of America·T Yang, B W Poovaiah
Mar 1, 2003·The Plant Journal : for Cell and Molecular Biology·James F DatFrank Van Breusegem
Oct 7, 2004·Trends in Plant Science·Ron MittlerFrank Van Breusegem
Dec 31, 2004·Journal of Biosciences·Sanjeev Kumar BaniwalPascal von Koskull-Döring
Aug 10, 2006·Plant Molecular Biology·Roman A VolkovFriedrich Schöffl
Jan 6, 2007·Autophagy·Peter Bozhkov, Christer Jansson
Jan 24, 2007·Physiological Reviews·Karen Bedard, Karl-Heinz Krause
Feb 10, 2007·Annual Review of Plant Biology·Ian M MøllerAndreas Hansson
Feb 13, 2007·Trends in Plant Science·Graham NoctorChristine H Foyer
Aug 1, 2008·Journal of Integrative Plant Biology·Li-Juan QuanHong-Yu Li
Feb 24, 2009·Plant Molecular Biology·Bo HongJunping Gao
Feb 26, 2009·Antioxidants & Redox Signaling·Christine H Foyer, Graham Noctor
Jul 7, 2009·Annual Review of Plant Biology·Christine H FoyerGraham Noctor
Sep 22, 2010·The New Phytologist·Ilse KrannerCharlotte E Seal
Nov 1, 2011·Trends in Plant Science·Daniel MarinoNicolas Pauly
Sep 1, 2012·Plant Physiology and Biochemistry : PPB·Jie ZhouJing Quan Yu
Jan 17, 2013·Antioxidants & Redox Signaling·Beat B FischerAnja Krieger-Liszkay
Sep 16, 2014·Plant Science : an International Journal of Experimental Plant Biology·Sangmin LeeChung-Mo Park
Oct 12, 2014·Current Opinion in Cell Biology·Colleen R Reczek, Navdeep S Chandel

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Citations

Sep 21, 2018·International Journal of Molecular Sciences·Martin ČernýBřetislav Brzobohatý
May 24, 2019·Frontiers in Chemistry·Qinghai WangXiaoe Que
Nov 28, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hana DufkováMartin Černý
Oct 6, 2020·The Plant Journal : for Cell and Molecular Biology·Amith R DevireddyRon Mittler

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