Naslov
Plant hormone auxin – the regulator of abiotic stress response in Brassicaceae

Autori
Salopek-Sondi, Branka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts: HDBMB2019 Crossroads in Life Sciences / Katalinić, Maja ; Dulić, Morana ; Stuparević, Igor - Zagreb : Hrvatsko Društvo za Biotehnologiju, 2019, 39-39

ISBN
978-953-95551-7-5

Skup
Congress of the Croatian Society of Biochemistry and Molecular Biology "Crossroads in Life Sciences" (HDBMB2019)

Mjesto i datum
Lovran, Hrvatska, 25.09.2019. - 28.09.2019

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
auxin ; abiotic stress ; Brassica crops ; mechanism of tolerance

Sažetak
Increased soil salinity and drought are severe abiotic stresses that may affect growth, yields, and product quality of many crops. Crop plants from the Brassicaceae family, including cabbages, kales, broccoli etc., are among the oldest known cultivated plants and are also commercially important vegetables. Because Brassicaceae are widely grown in Mediterranean, semi-arid and arid environments with often elevated salinity and drought, these unpleasant conditions can threaten their yields and crop quality. Depending of their tolerance, plants have developed different mechanisms to cope with unpleasant environmental conditions at morphological, physiological, cellular and molecular levels. To elucidate the mechanisms responsible for abiotic stress tolerance in Brassicaceae, Brassica crops with global economic importance: white cabbage (Brassica oleracea var. capitata), Chinese cabbage (B. rapa ssp. pekinensis) and kale (B. oleracea var. acephala) were used in this study. In addition, model plant Arabidopsis thaliana was used for functional research. Here we present investigations into the physiological, biochemical, transcriptomic and hormonal components of abiotic stress responses. The focus of research was towards the understanding the role of plant hormone auxin (indole-3-acetic acid, IAA) in abiotic stress. IAA is plant hormone crucial for plant growth and development, and recent studies have suggested that the auxin also mediates plant responses to stress conditions. Changes in auxin level and profile were observed in correlation with the level of tolerance of investigated species. Auxin redistribution upon stress conditions was observed by confocal microscope in Arabidopsis root using auxin reporter DR5rev::GFP line. Furthermore, correlations of auxin with biochemical stress markers and other hormones (abscisic acid, salicylic acid, jasmonic acid) were discussed.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA