p-Coumaric acid differential alters the ion-omics profile of chia shoots under salt stress
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Date
2024
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract
p-Coumaric acid (p-CA) is a phenolic compound that plays a crucial role in mediating
multiple signaling pathways. It serves as a defense strategy against plant wounding and is also
presumed to play a role in plant development and lignin biosynthesis. This study aimed to investigate
the physiological and ionomic effect of p-CA on chia seedlings under salt stress. To this end, chia
seedlings were supplemented with Nitrosol® containing 100 μM of p-CA, 100 of mM NaCI, and
their combined (100 mM NaCI + 100 μM p-CA) solutions in 2-day intervals for a period of 14 days
along with a control containing Nitrosol® only. The treatment of chia seedlings with 100 mM of NaCI
decreased their growth parameters and the content of the majority of the essential macro-elements
(K, P, Ca, and Mg), except for that of sodium (Na). The simultaneous application of p-CA and a salt
stress treatment (p-CA + NaCI) alleviated the effect of salt stress on chia seedlings’ shoots, and this
was indicated by the increase in chia biomass. Furthermore, this combined treatment significantly
enhanced the levels of the essential microelements Mg and Ca. In summary, this brief report is built
on the foundational work of our previous study, which demonstrated that p-CA promotes growth in
chia seedlings via activation of O2
−. In this brief report, we further show that p-CA not only promotes
growth but also mitigates the effects of salt stress on chia seedlings. This mitigation effect may result
from the presence of Mg and Ca, which are vital nutrients involved in regulating metabolic pathways,
enzyme activity, and amino acid synthesis.
Description
Keywords
Chia, Salt Stress, p-Coumaric Acid, Mineral Content
Citation
Nkomo, M., Badiwe, M., Niekerk, L.A., Gokul, A., Keyster, M. and Klein, A., 2024. p-Coumaric Acid Differential Alters the Ion-Omics Profile of Chia Shoots under Salt Stress. Plants, 13(11), p.1564.