Leonardo Hinojosa
Impact of heat and drought stress on peroxisome proliferation in quinoa
Hinojosa, Leonardo; Sanad, Marwa; Jarvis, David; Steel, Patrick; Murphy, Kevin; Smertenko, Andrei
Authors
Marwa Sanad
David Jarvis
Professor Patrick Steel p.g.steel@durham.ac.uk
Professor
Kevin Murphy
Andrei Smertenko
Abstract
Although peroxisomes play a key role in plant metabolism under both normal and stressful growth conditions, the impact of drought and heat stress on the peroxisomes remains unknown. Quinoa represents an informative system for dissecting the impact of abiotic stress on peroxisome proliferation because it is adapted to marginal environments. Here we determined the correlation of peroxisome abundance with physiological responses and yield under heat, drought, and heat plus drought combination stresses in eight genotypes of quinoa. We found that all stresses caused a reduction in stomatal conductance and yield. Furthermore, H2O2 content increased under drought and heat plus drought. Principal component analysis demonstrated that peroxisome abundance correlated positively with H2O2 content in leaves and correlated negatively with yield. Person correlation coefficient for yield and peroxisome abundance (r=‐0.59) was higher than for commonly used photosynthetic efficiency (r=0.23), but comparable to those for classical stress indicators such as soil moisture content (r=0.51) or stomatal conductance (r=0.62). Our work established peroxisome abundance as a sensitive parameter for responses to heat and drought stress in the genetically diverse populations. As heat waves threaten agricultural productivity in arid climates, our findings will facilitate identification of genetic markers for improving yield of crops under extreme weather patterns.
Citation
Hinojosa, L., Sanad, M., Jarvis, D., Steel, P., Murphy, K., & Smertenko, A. (2019). Impact of heat and drought stress on peroxisome proliferation in quinoa. The Plant Journal, 99(6), 1144-1158. https://doi.org/10.1111/tpj.14411
Journal Article Type | Article |
---|---|
Acceptance Date | May 13, 2019 |
Online Publication Date | Jul 1, 2019 |
Publication Date | Sep 30, 2019 |
Deposit Date | May 28, 2019 |
Publicly Available Date | Jul 1, 2020 |
Journal | Plant Journal |
Print ISSN | 0960-7412 |
Electronic ISSN | 1365-313X |
Publisher | Wiley |
Peer Reviewed | Peer Reviewed |
Volume | 99 |
Issue | 6 |
Pages | 1144-1158 |
DOI | https://doi.org/10.1111/tpj.14411 |
Public URL | https://durham-repository.worktribe.com/output/1295718 |
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Copyright Statement
This is the accepted version of the following article: Hinojosa, Leonardo, Sanad, Marwa, Jarvis, David, Steel, Patrick, Murphy, Kevin & Smertenko, Andrei (2019). Impact of heat and drought stress on peroxisome proliferation in quinoa. The Plant Journal 99(6): 1144-1158, which has been published in final form at https://doi.org/10.1111/tpj.14411. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
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