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Title: Peroxisomal Fatty Acid β-oxidation negatively impacts plant survival under salt stress

Abstract

Peroxisomal β-oxidation is the sole pathway for metabolic breakdown of fatty acids to generate energy and carbon skeletons in plants, is essential for oilseed germination and plays an important role in growth, development and cellular homeostasis. Yet, this process also produces cytotoxic reactive oxygen species (ROS) as byproducts. We recently showed that disruption of fatty acid β-oxidation enhance plant survival under carbon starvation conditions. Here, we extend these findings by demonstrating that blocking fatty acid import into peroxisomes reduces ROS accumulation and increases plant tolerance to salt stress, whereas increasing fatty acid flux into the β-oxidation pathway has opposite effects. Together, these results support the view that peroxisomal β-oxidation of fatty acids enhances stress-induced ROS production, thereby negatively impacting plant survival under adverse environmental conditions.

Authors:
 [1]; ORCiD logo [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Center for Advanced Bioenergy and Bioproducts Innovation (CABBI)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1489741
Alternate Identifier(s):
OSTI ID: 1491819
Report Number(s):
BNL-210841-2019-JAAM
Journal ID: ISSN 1559-2324
Grant/Contract Number:  
SC0012704; SC0018420
Resource Type:
Accepted Manuscript
Journal Name:
Plant Signaling & Behavior (Online)
Additional Journal Information:
Journal Name: Plant Signaling & Behavior (Online); Journal Volume: 14; Journal Issue: 2; Journal ID: ISSN 1559-2324
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; fatty acid β-oxidation; reactive oxygen species; peroxisome; salt stress; Fatty acid β-oxidation, reactive oxygen species, peroxisome, salt stress

Citation Formats

Yu, Linhui, Fan, Jilian, and Xu, Changcheng. Peroxisomal Fatty Acid β-oxidation negatively impacts plant survival under salt stress. United States: N. p., 2019. Web. doi:10.1080/15592324.2018.1561121.
Yu, Linhui, Fan, Jilian, & Xu, Changcheng. Peroxisomal Fatty Acid β-oxidation negatively impacts plant survival under salt stress. United States. doi:10.1080/15592324.2018.1561121.
Yu, Linhui, Fan, Jilian, and Xu, Changcheng. Tue . "Peroxisomal Fatty Acid β-oxidation negatively impacts plant survival under salt stress". United States. doi:10.1080/15592324.2018.1561121. https://www.osti.gov/servlets/purl/1489741.
@article{osti_1489741,
title = {Peroxisomal Fatty Acid β-oxidation negatively impacts plant survival under salt stress},
author = {Yu, Linhui and Fan, Jilian and Xu, Changcheng},
abstractNote = {Peroxisomal β-oxidation is the sole pathway for metabolic breakdown of fatty acids to generate energy and carbon skeletons in plants, is essential for oilseed germination and plays an important role in growth, development and cellular homeostasis. Yet, this process also produces cytotoxic reactive oxygen species (ROS) as byproducts. We recently showed that disruption of fatty acid β-oxidation enhance plant survival under carbon starvation conditions. Here, we extend these findings by demonstrating that blocking fatty acid import into peroxisomes reduces ROS accumulation and increases plant tolerance to salt stress, whereas increasing fatty acid flux into the β-oxidation pathway has opposite effects. Together, these results support the view that peroxisomal β-oxidation of fatty acids enhances stress-induced ROS production, thereby negatively impacting plant survival under adverse environmental conditions.},
doi = {10.1080/15592324.2018.1561121},
journal = {Plant Signaling & Behavior (Online)},
number = 2,
volume = 14,
place = {United States},
year = {2019},
month = {1}
}

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