Rice SUB1A constrains remodelling of the transcriptome and metabolome during submergence to facilitate post-submergence recovery

Plant, Cell & Environment
Anna M LockeJulia Bailey-Serres

Abstract

The rice (Oryza sativa L.) ethylene-responsive transcription factor gene SUB1A-1 confers tolerance to prolonged, complete submergence by limiting underwater elongation growth. Upon desubmergence, SUB1A-1 genotypes rapidly recover photosynthetic function and recommence development towards flowering. The underpinnings of the transition from stress amelioration to the return to homeostasis are not well known. Here, transcriptomic and metabolomic analyses were conducted to identify mechanisms by which SUB1A improves physiological function over the 24 hr following a sublethal submergence event. Evaluation of near-isogenic genotypes after submergence and over a day of reaeration demonstrated that SUB1A transiently constrains the remodelling of cellular activities associated with growth. SUB1A influenced the abundance of ca. 1,400 transcripts and had a continued impact on metabolite content, particularly free amino acids, glucose, and sucrose, throughout the recovery period. SUB1A promoted recovery of metabolic homeostasis but had limited influence on mRNAs associated with growth processes and photosynthesis. The involvement of low energy sensing during submergence and recovery was supported by dynamics in trehalose-6-phosphate and mR...Continue Reading

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Citations

Dec 20, 2019·The New Phytologist·Sjon HartmanLaurentius A C J Voesenek
Dec 19, 2019·Metabolites·Ali RazzaqFozia Saleem
Feb 7, 2019·Proceedings of the National Academy of Sciences of the United States of America·Chih-Cheng LinMing-Che Shih
Apr 11, 2019·Frontiers in Plant Science·Takeshi FukaoJulián Mario Peña-Castro
Oct 3, 2020·Biochemical Society Transactions·Matthew J PaulCara A Griffiths
Jan 26, 2021·Plant Science : an International Journal of Experimental Plant Biology·Aitor VillateOier Aizpurua-Olaizola
Jan 30, 2021·Computational and Structural Biotechnology Journal·Haiyue ZengYi Wang
Mar 13, 2019·Trends in Plant Science·Elaine YeungRashmi Sasidharan
Mar 16, 2021·Plant Physiology·Maria-Angelica SanclementeKaren E Koch

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