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Effect of Salt Stress in the Regulation of Anthocyanins and Color of Hibiscus Flowers by Digital Image Analysis

Effect of Salt Stress in the Regulation of Anthocyanins and Color of Hibiscus Flowers by Digital Image Analysis

Alice Trivellini, Belén Gordillo, Francisco J Rodríguez-Pulido, Eva Borghesi, Antonio Ferrante, Paolo Vernieri, Natalia Quijada-Morín, M Lourdes González-Miret, Francisco J Heredia

J Agric Food Chem. 2014 Jul 23;62(29):6966-74.

PMID: 25005605

Abstract:

The effect of salt stress (200 mM NaCl for 28 days) on physiological characteristics of Hibiscus rosa-sinensis, such as abscisic acid (ABA) content, electrolyte leakage, and photochemical efficiency in leaves, and its influence on biomass production, anthocyanin composition, and color expression of flowers were evaluated. Salinity significantly increased electrolyte leakage and ABA content in leaves and reduced the flower fresh weight. Chlorophyll fluorescence parameters were lower in salt stress condition, compared to control. Moreover, salt stress negatively affected the content of anthocyanins (mainly cyanidin-3-sophoroside), which resulted in a visually perceptible loss of color. The detailed anthocyanin composition monitored by HPLC-DAD-MS and the color variations by digital image analysis due to salt stress showed that the effect was more noticeable at the basal portion of petals. A forward stepwise multiple regression was performed for predicting the content of anthocyanins from appearance characteristics obtained by image analysis, reaching R-square values up to 0.90.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP18376313	Cyanidin 3-sophoroside chloride		18376-31-3	Price

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