A Differential Phytohormone Profile in the Aerial Part and Roots as a Response to Water Stress Underlying Morphophysiological and Biochemical Changes in Two Inbred Sunflower Lines at Early Growth Stage

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F23%3A00577707" target="_blank" >RIV/61389030:_____/23:00577707 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/23:73623001

Výsledek na webu

<a href="https://doi.org/10.1007/s00344-023-10999-w" target="_blank" >https://doi.org/10.1007/s00344-023-10999-w</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00344-023-10999-w" target="_blank" >10.1007/s00344-023-10999-w</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A Differential Phytohormone Profile in the Aerial Part and Roots as a Response to Water Stress Underlying Morphophysiological and Biochemical Changes in Two Inbred Sunflower Lines at Early Growth Stage

Popis výsledku v původním jazyce

Water stress is a primary abiotic stress that produces several morphological, physiological, biochemical and molecular alterations, which affect crop productivity. The aim of the present study was to evaluate and compare morphophysiological and biochemical characteristics and the hormone profiles of two sunflower inbred lines (C803 and R461-4) in response to moderate water stress at the early vegetative growth (V2) stage. Sunflower seedlings of C803 and R461-4 inbred lines obtained in pots filled with sand moistened to 60% field capacity were watered with (1) Hoagland’s solution (control) or (2) mannitol 400 mM (moderate water stress) to field capacity on the fourth day after sowing. At V2, the seedlings were harvested and sectioned into the aerial part and roots. The parameters recorded for the analyses included the aerial part and root length, fresh and dry weight, leaf area and expansion rate, stomatal conductance, osmotic potential, phytohormones and total soluble carbohydrates. Among these parameters, the leaf area and stomatal conductance were the most affected by water stress. Abscisic acid and salicylic acid showed significant increases in the aerial part of water-stressed seedlings, while abscisic acid was the most abundant phytohormone in the roots. In addition, 28-Homocastasterone was the brassinosteroid with higher levels in both lines. This is the first report of teasterone in the sunflower. Finally, total soluble carbohydrates increased upon stressful conditions. Altogether, the water stress led to different parameter alterations dependent on the inbred line and its different sensitivity to water stress.

Název v anglickém jazyce

A Differential Phytohormone Profile in the Aerial Part and Roots as a Response to Water Stress Underlying Morphophysiological and Biochemical Changes in Two Inbred Sunflower Lines at Early Growth Stage

Popis výsledku anglicky

Water stress is a primary abiotic stress that produces several morphological, physiological, biochemical and molecular alterations, which affect crop productivity. The aim of the present study was to evaluate and compare morphophysiological and biochemical characteristics and the hormone profiles of two sunflower inbred lines (C803 and R461-4) in response to moderate water stress at the early vegetative growth (V2) stage. Sunflower seedlings of C803 and R461-4 inbred lines obtained in pots filled with sand moistened to 60% field capacity were watered with (1) Hoagland’s solution (control) or (2) mannitol 400 mM (moderate water stress) to field capacity on the fourth day after sowing. At V2, the seedlings were harvested and sectioned into the aerial part and roots. The parameters recorded for the analyses included the aerial part and root length, fresh and dry weight, leaf area and expansion rate, stomatal conductance, osmotic potential, phytohormones and total soluble carbohydrates. Among these parameters, the leaf area and stomatal conductance were the most affected by water stress. Abscisic acid and salicylic acid showed significant increases in the aerial part of water-stressed seedlings, while abscisic acid was the most abundant phytohormone in the roots. In addition, 28-Homocastasterone was the brassinosteroid with higher levels in both lines. This is the first report of teasterone in the sunflower. Finally, total soluble carbohydrates increased upon stressful conditions. Altogether, the water stress led to different parameter alterations dependent on the inbred line and its different sensitivity to water stress.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10608 - Biochemistry and molecular biology

Projekt

<a href="/cs/project/EF16_019%2F0000827" target="_blank" >EF16_019/0000827: Rostliny jako prostředek udržitelného globálního rozvoje</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Plant Growth Regulation

ISSN

0721-7595

e-ISSN

1435-8107

Svazek periodika

42

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

7083-7095

Kód UT WoS článku

000972310800001

EID výsledku v databázi Scopus

2-s2.0-85153080247