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Salicylic acid modulates cutting-induced physiological and biochemical responses to delay senescence in two gerbera cultivars
- Source :
- Plant Growth Regulation. 87:245-256
- Publication Year :
- 2018
- Publisher :
- Springer Science and Business Media LLC, 2018.
-
Abstract
- The postharvest longevity of gerbera (Gerbera jamesonii) flowers has a critical importance in determining their commercial value; and therefore, there is a commercial demand for prolonging their vase life (VL). Here, we tested the efficacy of salicylic acid (SA, 150 µM) preservative in extending longevity of cut flower of two gerbera cultivars, namely the ‘Sunway’ and ‘Bayadere’, of which water-held ‘Bayadere’ has longer VL than water-held ‘Sunway’. The results indicated that exogenous SA could significantly prolong the VL of cut flowers of both ‘Sunway’ and ‘Bayadere’ cultivars, with better preservative effect being observed on ‘Sunway’. SA preservative was more effective in ameliorating relative water uptake and relative fresh weight in ‘Sunway’ than in ‘Bayadere’, which was accompanied by a greater decrease in proline accumulation. Application of SA prolonged the VL of two cut gerbera flower cultivars by inhibiting the activity of polyphenol oxidase involved in browning reaction, and decreasing oxidative stress through improving reactive oxygen species-scavenging antioxidant capacity, which included accumulation of total phenolic compounds and total flavonoids, and enhancement of enzymatic antioxidant activities. As a result, membrane lipid peroxidation levels were reduced in cut flowers of both cultivars, with higher reduction level being observed in ‘Sunway’ than in ‘Bayadere’. Additionally, SA preservative was more efficient in maintaining a greater content of total soluble proteins in ‘Sunway’ than in ‘Bayadere’. These findings clearly demonstrated that SA has higher preservative effects on extending VL of ‘Sunway’ than that of ‘Bayadere’. Taken together, SA can be recommended to farmers for postharvest treatments to maintain quality and delay senescence of gerbera flowers.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Gerbera
Preservative
Physiology
Vase life
fungi
food and beverages
Plant Science
Cut flowers
Biology
biology.organism_classification
01 natural sciences
Polyphenol oxidase
03 medical and health sciences
Horticulture
chemistry.chemical_compound
030104 developmental biology
chemistry
Gerbera jamesonii
Postharvest
Agronomy and Crop Science
Salicylic acid
010606 plant biology & botany
Subjects
Details
- ISSN :
- 15735087 and 01676903
- Volume :
- 87
- Database :
- OpenAIRE
- Journal :
- Plant Growth Regulation
- Accession number :
- edsair.doi...........d373a0f1170370c5a2b4cfcafc9abd1d