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Bicarbonate Induced Redox Changes - 30 min

Reversible Cysteine Oxidation in Arabidopsis thaliana

21 modifications in 18 peptides, found in 31 proteins

Experiment Details

Exp 117b


Experimental Setup
TissueA. thaliana (var. Landsberg erecta) suspension cells
Condition30 min 3 mM NaNO3 (control) or 3 mM NaHCO₃ (bicarbonate treatment)
MS InstrumentQ-Exactive Orbitrap Plus
MS/MS Search Parameters
Protein DatabaseA. thaliana database (52,461 entries downloaded in April, 2015)
Decoy StrategyReverse decoy database
FDR ThresholdStrict FDR ≤ 1%, relaxed FDR ≤ 5%
Search Algorithm(s)SequestHT
Precursor Mass Tolerance10 ppm
ProteaseTrypsin
Fixed ModificationsCarbamidomethyl (C)
Variable ModificationsOxidation (M)
Phosphorylation (STY)
N-ethylmaleimide (C)
LabelsiodoTMT6plex (+329.227 Da (C))
iTRAQ8plex (+304.205 Da (N-terminus and K)
Other Information
CommentsTable 1. Only included peptides with a signficant fold change (p-value < 0.05) as indicated in the table. Fold changes indicate bicarbonate treatment versus control.


Publication Information

Yin et al., 2017

PubMed ID: 28184230

ProteomeXchange: PXD004963

Abstract

Front Plant Sci. 2017 Jan 26;8:58. doi: 10.3389/fpls.2017.00058. eCollection 
2017.

Bicarbonate Induced Redox Proteome Changes in Arabidopsis Suspension Cells.

Yin Z(1), Balmant K(2), Geng S(2), Zhu N(3), Zhang T(2), Dufresne C(4), Dai 
S(5), Chen S(3).

Author information:
(1)Plant Molecular and Cellular Biology Program, Department of Biology, Genetics 
Institute, University of FloridaGainesville, FL, USA; Key Laboratory of 
Saline-alkali Vegetation Ecology Restoration in Oil Field, Alkali Soil Natural 
Environmental Science Center, Ministry of Education, Northeast Forestry 
UniversityHarbin, China.
(2)Plant Molecular and Cellular Biology Program, Department of Biology, Genetics 
Institute, University of Florida Gainesville, FL, USA.
(3)Plant Molecular and Cellular Biology Program, Department of Biology, Genetics 
Institute, University of FloridaGainesville, FL, USA; Interdisciplinary Center 
for Biotechnology Research, University of FloridaGainesville, FL, USA.
(4)Thermo Fisher Scientific West Palm Beach, FL, USA.
(5)Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, 
Alkali Soil Natural Environmental Science Center, Ministry of Education, 
Northeast Forestry University Harbin, China.

Climate change as a result of increasing atmospheric CO2 affects plant growth 
and productivity. CO2 is not only a carbon donor for photosynthesis but also an 
environmental signal that can perturb cellular redox homeostasis and lead to 
modifications of redox-sensitive proteins. Although redox regulation of protein 
functions has emerged as an important mechanism in several biological processes, 
protein redox modifications and how they function in plant CO2 response remain 
unclear. Here a new iodoTMTRAQ proteomics technology was employed to analyze 
changes in protein redox modifications in Arabidopsis thaliana suspension cells 
in response to bicarbonate (mimic of elevated CO2) in a time-course study. A 
total of 47 potential redox-regulated proteins were identified with functions in 
carbohydrate and energy metabolism, transport, ROS scavenging, cell structure 
modulation and protein turnover. This inventory of previously unknown redox 
responsive proteins in Arabidopsis bicarbonate responses lays a foundation for 
future research toward understanding the molecular mechanisms underlying plant 
CO2 responses.

DOI: 10.3389/fpls.2017.00058
PMCID: PMC5266719
PMID: 28184230