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Hormonal dynamics during salt stress responses of salt-sensitive Arabidopsis thaliana and salt-tolerant Thellungiella salsuginea

SYSNO ASEP	0481222
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Hormonal dynamics during salt stress responses of salt-sensitive Arabidopsis thaliana and salt-tolerant Thellungiella salsuginea
Author(s)	Přerostová, Sylva (UEB-Q)_{RID, ORCID, SAI} Dobrev, Petre (UEB-Q)_{RID, ORCID} Gaudinová, Alena (UEB-Q)_ORCID Hošek, Petr (UEB-Q)_ORCID Soudek, Petr (UEB-Q)_{RID, ORCID} Knirsch, Vojtěch (UEB-Q)_ORCID Vaňková, Radomíra (UEB-Q)_{RID, ORCID}
Number of authors	7
Source Title	Plant Science. - : Elsevier - ISSN 0168-9452 Roč. 264, NOV (2017), s. 188-198
Number of pages	11 s.
Language	eng - English
Country	IE - Ireland
Keywords	Abscisic acid ; Auxin ; Cytokinin ; Halophyte ; Phytohormone ; Salt stress
Subject RIV	EF - Botanics
OECD category	Plant sciences, botany
R&D Projects	GA16-14649S GA ČR - Czech Science Foundation (CSF)
	GA17-04607S GA ČR - Czech Science Foundation (CSF)
	LD15093 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UEB-Q - RVO:61389030
UT WOS	000413614600019
EID SCOPUS	85030087149
DOI	10.1016/j.plantsci.2017.07.020
Annotation	Salt stress responses in salt-sensitive Arabidopsis thaliana (2–150 mM NaCl) and the closely related salt-tolerant Thellungiella salsuginea (Eutrema halophila, 150–350 mM NaCl) were compared to identify hormonal and transcriptomic changes associated with enhanced stress tolerance. Phytohormone levels, expression of selected genes, membrane stability, and Na + and K + concentrations were measured in shoot apices, leaves, and roots. Thellungiella exhibited higher salt stress tolerance associated with elevated basal levels of abscisic acid and jasmonic acid, and lower levels of active cytokinins (excluding cis-zeatin) in shoot apices. Analysis of the dynamics of the early salt stress response (15 min to 24 h) revealed that the halophyte response was faster and stronger. Very mild stress, in our hydropony arrangement 2–25 mM NaCl, affected the transcription of genes involved in cytokinin metabolism (AtIPTs, AtCKXs). Mild stress induced in Arabidopsis (50 mM) stress responses only in shoot apices, while in Thellungiella (150 mM) across the whole plant. Arabidopsis exhibited in hydropony evidence of severe stress above 75 mM NaCl and died in 150 mM, whereas the halophyte only became severely stressed above 225 mM. The responses of individual phytohormones (cytokinins, auxin, abscisic acid, jasmonic acid, salicylic acid and their metabolites) to salinity are discussed.
Workplace	Institute of Experimental Botany
Contact	David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469
Year of Publishing	2018

Number of the records: 1