Naslov
The role of brassinosteroids and salicylic acid in plant defense response to potato spindle tuber viroid infection

Autori
Milanović, Jasna

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, doktorska disertacija

Fakultet
Prirodoslovno–matematički fakultet

Mjesto
Zagreb

Datum
18.12

Godina
2017

Stranica
119

Mentor
Mihaljević, Snježana ; Llave Correas, César

Ključne riječi
antioksidacijski odgovor, biljni regulatori rasta, latentna zaraza, PSTVd, Solanaceae
(antioxidant response, latent infection, plant growth regulators, PSTVd, Solanaceae)

Sažetak
Viroids are plant–pathogenic molecules characterized by a single–stranded circular non–coding RNA genome. Despite their genomic simplicity, these plant pathogens are able to induce disease in a wide range of host plants with significant economic impact. The surveillance activities described in this study, revealed the presence of Potato spindle tuber viroid (PSTVd) in Croatia in two ornamental species, while no PSTVd infection was found in tomato or potato. This study was also aimed to evaluate the effects of PSTVd infection on endogenous plant growth regulator (PGR) content, and to identify common, but also specific, features of systemic hormonal response in solanaceous plant species in which PSTVd causes different degrees of symptoms. Endogenous brassinosteroide castasterone, salicylic acid, abscisic acid, indole–3–acetic acid, jasmonic acid and its precursor cis– 12– oxophytodienoic acid were quantified using UHPLC–MS/MS. The study provides new evidences about the involvement of different PGRs and antioxidant enzymes in plant defense response against PSTVd infection, in both symptomatic and asymptomatic solanaceous species.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA