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24-Epibrasinolide modulates the vase life of Lisianthus cut flowers by modulating ACC oxidase enzyme activity and physiological responses

Identificadores del recurso

Plants, 10(5): 995 (2021)

22237747

http://hdl.handle.net/11093/2787

10.3390/plants10050995

https://www.mdpi.com/2223-7747/10/5/995

Procedencia

Ficha

Título:: 24-Epibrasinolide modulates the vase life of Lisianthus cut flowers by modulating ACC oxidase enzyme activity and physiological responses
Tema:: 3107.03 Floricultura; 2306 Química Orgánica; 2417 Biología Vegetal (Botánica)
Descripción:: Ethylene is the most important factor playing roles in senescence and deterioration of harvested crops including cut flowers. Brassinosteroids (BRs), as natural phytohormones, have been reported to differently modulate ethylene production and related senescence processes in different crops. This study was carried out to determine the effects of different levels of 24-epibrassinolide (EBL) on ACC oxidase enzyme activity, the final enzyme in ethylene biosynthesis pathway, vase life, and senescence rate in lisianthus cut flowers. Harvested flowers were treated with EBL (at 0, 3, 6, and 9 µmol/L) and kept at 25 °C for 15 days. The ACC oxidase activity, water absorption, malondialdehyde (MDA) production and vase solution absorption rates, chlorophyll and anthocyanin contents, and the vase life of the flowers were evaluated during and at the end of storage. EBL at 3 µmol/L significantly (p ≤ 0.01) enhanced the flower vase life by decreasing the ACC oxidase activity, MDA production and senescence rates, and enhancing chlorophyll and anthocyanin biosynthesis and accumulation, relative water content, and vase solution absorption rates. By increasing the concentration, EBL negatively affected the flower vase life and postharvest quality probably via enhancing the ACC oxidase enzyme activity and subsequent ethylene production. EBL at 6 and 9 µmol/L and in a concentration dependent manner, enhanced the ACC oxidase activity and MDA production rate and decreased chlorophyll and anthocyanin accumulation and water absorption rate. The results indicate that the effects of brassinosteroids on ethylene production and physiology of lisianthus cut flowers is highly dose dependent.
Idioma:: English
Autor/Productor:: Darvish, Mohammad; Shirzad, Habib; Asghari, Mohammadreza; Noruzi, Parviz; Alirezalu, Abolfazl; Pateiro Moure, Mirian; Takshe, Aseel; Lorenzo Rodríguez, José Manuel
Editor:: Plants; Enxeñaría química
Derechos:: openAccess
Fecha:: 2021-11-30T12:57:03Z; 2021-05-17; 2021-11-30T11:51:37Z
Tipo de recurso:: article

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