Transcriptomic profiling revealed an important role of cell wall remodeling and ethylene signaling pathway during salt acclimation in Arabidopsis

Transcriptomic profiling revealed an important role of cell wall remodeling and ethylene... Plants can successfully improve their resistance to previously lethal salinity stress by a short exposure to low levels of salt stress, a process known as salt acclimation (SA). In spite of its fundamental significance in theoretical study and agricultural practice, the molecular mechanisms underlying plant SA remain elusive. In this study, we found that salt acclimated Arabidopsis young seedlings can survive subsequent 200 mM NaCl stress. RNA-seq was performed to analyze the genome-wide transcriptional response under SA conditions. Among 518 differentially expressed genes (DEGs) under SA, 366 up-regulated genes were enriched for cell wall biosynthesis, osmoregulation, oxidative stress, or transcription factors. Seven DEGs participate in the synthesis of lignin and 24 DEGs encode plant cell wall proteins, suggesting the importance of cell wall remodeling under SA. Furthermore, in comparison to non-acclimated salt stress, 228 of 245 DEGs were repressed by acclimated salt stress, including many genes related to ethylene biosynthesis and signaling pathway. In addition, MAPK6, a major component of the ethylene signaling pathway, was found to play a crucial role in SA. Our transcriptomic analysis has provided important insight on the roles of transcription factors, cell wall remodeling, and the ethylene biosynthesis and signaling pathways during SA in Arabidopsis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Transcriptomic profiling revealed an important role of cell wall remodeling and ethylene signaling pathway during salt acclimation in Arabidopsis

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Publisher
Springer Netherlands
Copyright
Copyright © 2014 by Springer Science+Business Media Dordrecht
Subject
Life Sciences; Plant Sciences; Biochemistry, general; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1007/s11103-014-0230-9
Publisher site
See Article on Publisher Site

Abstract

Plants can successfully improve their resistance to previously lethal salinity stress by a short exposure to low levels of salt stress, a process known as salt acclimation (SA). In spite of its fundamental significance in theoretical study and agricultural practice, the molecular mechanisms underlying plant SA remain elusive. In this study, we found that salt acclimated Arabidopsis young seedlings can survive subsequent 200 mM NaCl stress. RNA-seq was performed to analyze the genome-wide transcriptional response under SA conditions. Among 518 differentially expressed genes (DEGs) under SA, 366 up-regulated genes were enriched for cell wall biosynthesis, osmoregulation, oxidative stress, or transcription factors. Seven DEGs participate in the synthesis of lignin and 24 DEGs encode plant cell wall proteins, suggesting the importance of cell wall remodeling under SA. Furthermore, in comparison to non-acclimated salt stress, 228 of 245 DEGs were repressed by acclimated salt stress, including many genes related to ethylene biosynthesis and signaling pathway. In addition, MAPK6, a major component of the ethylene signaling pathway, was found to play a crucial role in SA. Our transcriptomic analysis has provided important insight on the roles of transcription factors, cell wall remodeling, and the ethylene biosynthesis and signaling pathways during SA in Arabidopsis.

Journal

Plant Molecular BiologySpringer Journals

Published: Aug 5, 2014

References

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    Arnon, DI
  • Mitogen-activated protein kinases 3 and 6 are required for full priming of stress responses in Arabidopsis thaliana
    Beckers, GJ; Jaskiewicz, M; Liu, Y; Underwood, WR; He, SY; Zhang, S; Conrath, U
  • Modulation of ethylene responses affects plant salt-stress responses
    Cao, WH; Liu, J; He, XJ; Mu, RL; Zhou, HL; Chen, SY; Zhang, JS
  • The MYB transcription factor superfamily of Arabidopsis: expression analysis and phylogenetic comparison with the rice MYB family
    Chen, Y; Yang, X; He, K; Liu, M; Li, J; Gao, Z; Lin, Z; Zhang, Y; Wang, X; Qiu, X; Shen, Y; Zhang, L; Deng, X; Luo, J; Deng, X; Chen, Z; Gu, H; Qu, L
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    Cheng, MC; Hsieh, EJ; Chen, JH; Chen, HY; Lin, TP
  • The Arabidopsis ETHYLENE RESPONSE FACTOR1 regulates abiotic-stress-responsive gene expression by binding to different cis-acting elements in response to different stress signals
    Cheng, MC; Liao, PM; Kuo, WW; Lin, TP
  • Integration of wounding and osmotic stress signals determines the expression of the AtMYB102 transcription factor gene
    Denekamp, M; Smeekens, SC
  • Stress-induced phenylpropanoid metabolism
    Dixon, RA; Paiva, NL

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