skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Metabolic shifts associated with drought-induced senescence in Brachypodium

Abstract

The metabolic underpinnings of plant survival under severe drought-induced senescence conditions are poorly understood. In this study, we assessed the morphological, physiological and metabolic responses to sustained water deficit in Brachypodium distachyon, a model organism for research on temperate grasses. Relative to control plants, fresh biomass, leaf water potential, and chlorophyll levels decreased rapidly in plants grown under drought conditions, demonstrating an early onset of senescence. The leaf C/N ratio and protein content showed an increase in plants subjected to drought stress. The concentrations of several small molecule carbohydrates and amino acid-derived metabolites previously implicated in osmotic protection increased rapidly in plants experiencing water deficit.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
OSTI Identifier:
1571702
Alternate Identifier(s):
OSTI ID: 1570767
Report Number(s):
PNNL-SA-145496
Journal ID: ISSN 0168-9452; S0168945219306697; 110278; PII: S0168945219306697
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Published Article
Journal Name:
Plant Science
Additional Journal Information:
Journal Name: Plant Science Journal Volume: 289 Journal Issue: C; Journal ID: ISSN 0168-9452
Publisher:
Elsevier
Country of Publication:
Ireland
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; drought; senescence; Brachypodium; mortality; metabolites; model grasses; abiotic stress

Citation Formats

Ahkami, Amir H., Wang, Wenzhi, Wietsma, Thomas W., Winkler, Tanya, Lange, Iris, Jansson, Christer, Lange, B. Markus, and McDowell, Nate G. Metabolic shifts associated with drought-induced senescence in Brachypodium. Ireland: N. p., 2019. Web. doi:10.1016/j.plantsci.2019.110278.
Ahkami, Amir H., Wang, Wenzhi, Wietsma, Thomas W., Winkler, Tanya, Lange, Iris, Jansson, Christer, Lange, B. Markus, & McDowell, Nate G. Metabolic shifts associated with drought-induced senescence in Brachypodium. Ireland. doi:10.1016/j.plantsci.2019.110278.
Ahkami, Amir H., Wang, Wenzhi, Wietsma, Thomas W., Winkler, Tanya, Lange, Iris, Jansson, Christer, Lange, B. Markus, and McDowell, Nate G. Sun . "Metabolic shifts associated with drought-induced senescence in Brachypodium". Ireland. doi:10.1016/j.plantsci.2019.110278.
@article{osti_1571702,
title = {Metabolic shifts associated with drought-induced senescence in Brachypodium},
author = {Ahkami, Amir H. and Wang, Wenzhi and Wietsma, Thomas W. and Winkler, Tanya and Lange, Iris and Jansson, Christer and Lange, B. Markus and McDowell, Nate G.},
abstractNote = {The metabolic underpinnings of plant survival under severe drought-induced senescence conditions are poorly understood. In this study, we assessed the morphological, physiological and metabolic responses to sustained water deficit in Brachypodium distachyon, a model organism for research on temperate grasses. Relative to control plants, fresh biomass, leaf water potential, and chlorophyll levels decreased rapidly in plants grown under drought conditions, demonstrating an early onset of senescence. The leaf C/N ratio and protein content showed an increase in plants subjected to drought stress. The concentrations of several small molecule carbohydrates and amino acid-derived metabolites previously implicated in osmotic protection increased rapidly in plants experiencing water deficit.},
doi = {10.1016/j.plantsci.2019.110278},
journal = {Plant Science},
number = C,
volume = 289,
place = {Ireland},
year = {2019},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.plantsci.2019.110278

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share: