Naslov
Ultrastructure analysis of plant tissue leaves of Brassica juncea L. and Tropaeolum majus L. by TEM

Autori
Vrca, Ivana ; Kević, Nives ; Restović, Ivana ; Bočina, Ivana ; Bilušić, Tea

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

Izvornik
Virtual Early Career European Microscopy Congress 2020, 24 – 26 November 2020 | Online Programme / - , 2020, 50-52

Skup
Virtual Early Career European Microscopy Congress 2020, 24 – 26 November 2020 | Online

Mjesto i datum
Online, 24.11.2020. - 26.11.2020

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Brassica juncea L. ; Tropaeolum majus L. ; glucosinolates ; myrosinase ; TEM microscopy

Sažetak
Brown (Brassica juncea L.) mustard and Tropaeolum majus L. belong to Brassicaceae family known for the presence of glucosinolates (GSLs), secondary plant metabolites. In the plant, they coexist with an enzyme myrosinase, though separately stored in vacuoles of so-called S-cells [1]. It was originally believed that the glucosinolate–myrosinase system in intact plants was stable due to a spatial separation of the components. This has been coined as the ‘mustard oil bomb’ theory. [2] GSLs and enzyme myrosinase come into contact when the plant tissue is damaged, releasing unstable aglycones which spontaneously rearrange into a variety of reactive compounds like thiocyanates, epithiontiriles, nitriles, oxazolidines and most important – isothiocyanates [1, 2]. GSL that is characteristic for Brassica juncea L. is sinigrin and for Tropaeolum majus L. is glucotropaeolin. Sinigrin degrades and releases allyl isothiocyanate, while glucotropaeolin releases benzyl isothiocyanate [3, 4]. Some glucosinolate hydrolysis products act as a plant defence compounds against insects and pathogens or have beneficial health effects on humans [2]. The aim of this research was ultrastructure analysis of plant tissue leaves of Brassica juncea L. and Tropaeolum majus L. and try to locate the components of the glucosinolate-myrosinase system because it is different between plant organs and changes during a plant’s growth cycle.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija, Prehrambena tehnologija, Nutricionizam

POVEZANOST RADA