Regulation of the membrane structure by brassinosteroids and progesterone in winter wheat seedlings exposed to low temperature

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F17%3A00485772" target="_blank" >RIV/61389030:_____/17:00485772 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/17:73583921

Result on the web

<a href="http://dx.doi.org/10.1016/j.steroids.2017.10.002" target="_blank" >http://dx.doi.org/10.1016/j.steroids.2017.10.002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.steroids.2017.10.002" target="_blank" >10.1016/j.steroids.2017.10.002</a>

Result language

angličtina

Original language name

Regulation of the membrane structure by brassinosteroids and progesterone in winter wheat seedlings exposed to low temperature

Original language description

Steroids constitute one of the most important groups of compounds of regulatory properties both in the animal and plant kingdom. In plants, steroids such as brassinosteroids or progesterone, by binding to protein receptors in cell membranes, regulate growth and initiate processes leading to increased tolerance to stress conditions. Due to their structural similarities to sterols, these steroids may also directly interact with cellular membranes. Our aim was to determine the changes of the structural parameters of lipid membranes under the influence of hydrophobic steroid compounds, i.e., 24-epibrassinolide (EBR) and its precursor—24-epicastasterone (ECS) and progesterone (PRO). Lipids were isolated from wheat seedlings with different tolerances to frost, grown at low temperatures (5 °C) for 1.5 and 3 weeks (acclimation process). Control plants were cultured continuously at 20 °C. From galactolipids and phospholipids, the main polar lipid fractions, the monolayers were formed, using a technique of Langmuir trough. EBR and ECS were introduced into monolayers, together with lipids, whereas the PRO was dissolved in the aqueous sub-phase upon which the monolayers were spread. Measurements performed at 25 °C and 10 °C showed a significant action of th e tested compounds on the physicochemical properties of the monolayers. EBR and PRO increased the area per lipid molecule in monolayers, resulting in formation of more flexible surface structures while the presence of the ECS induced the opposite effect. The influence of the polarity of lipids and steroids on the interactions in the monolayer was discussed. Lipids extracted from the membranes of wheat with the most tolerance to frost were characterized by the highest fatty acid unsaturation and steroids had a relatively weak effect on the parameters of the structure of their monolayers.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10401 - Organic chemistry

Project

<a href="/en/project/GJ15-08202Y" target="_blank" >GJ15-08202Y: Synthesis of new brassinosteroids and study of their interaction with plant and animal receptors</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Steroids

ISSN

0039-128X

e-ISSN

—

Volume of the periodical

128

Issue of the periodical within the volume

DEC

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

37-45

UT code for WoS article

000418216100006

EID of the result in the Scopus database

2-s2.0-85032271899