UPM Institutional Repository

Synthesis of phenolics and flavonoids in ginger (Zingiber officinale Roscoe) and their effects on photosynthesis rate


Citation

Ghasemzadeh , Ali and Jaafar, H. Z. E. and Rahmat , Asmah (2010) Synthesis of phenolics and flavonoids in ginger (Zingiber officinale Roscoe) and their effects on photosynthesis rate. International Journal of Molecular Sciences, 11 (11). pp. 4539-4555. ISSN 1422-0067, ESSN: 1422-0067

Abstract

The relationship between phenolics and flavonoids synthesis/accumulation and photosynthesis rate was investigated for two Malaysian ginger (Zingiber officinale) varieties grown under four levels of glasshouse light intensity, namely 310, 460, 630 and 790 μmol m 2s 1. High performance liquid chromatography (HPLC) was employed to identify and quantify the polyphenolic components. The results of HPLC analysis indicated that synthesis and partitioning of quercetin, rutin, catechin, epicatechin and naringenin were high in plants grown under 310 μmol m 2s 1. The average value of flavonoids synthesis in leaves for both varieties increased (Halia Bentong 26.1%; Halia Bara 19.5%) when light intensity decreased. Photosynthetic rate and plant biomass increased in both varieties with increasing light intensity. More specifically, a high photosynthesis rate (12.25 μmol CO 2 m 2s 1 in Halia Bara) and plant biomass (79.47 g in Halia Bentong) were observed at 790 μmol m 2s 1. Furthermore, plants with the lowest rate of photosynthesis had highest flavonoids content. Previous studies have shown that quercetin inhibits and salicylic acid induces the electron transport rate in photosynthesis photosystems. In the current study, quercetin was an abundant flavonoid in both ginger varieties. Moreover, higher concentration of quercetin (1.12 mg/g dry weight) was found in Halia Bara leaves grown under 310 μmol m 2s 1 with a low photosynthesis rate. Furthermore, a high content of salicylic acid (0.673 mg/g dry weight) was detected in Halia Bara leaves exposed under 790 μmol m 2s 1 with a high photosynthesis rate. No salicylic acid was detected in gingers grown under 310 μmol m 2s 1. Ginger is a semi-shade loving plant that does not require high light intensity for photosynthesis. Different photosynthesis rates at different light intensities may be related to the absence or presence of some flavonoid and phenolic compounds.


Download File

[img]
Preview
PDF (Abstract)
Synthesis of phenolics and flavonoids in ginger.pdf

Download (186kB) | Preview
Official URL or Download Paper: http://www.mdpi.com/

Additional Metadata

Item Type: Article
Subject: Ginger.
Subject: Ginger - Analysis.
Subject: Plants - Photosynthesis.
Divisions: Faculty of Medicine and Health Science
DOI Number: https://doi.org/10.3390/ijms11114539
Publisher: MDPI
Keywords: Flavonoids; Halia bara; Halia bentong; Photosynthesis; Salicylic acid
Depositing User: Raja Norazlinda Raja Azenam
Date Deposited: 09 May 2013 02:40
Last Modified: 27 Nov 2015 08:21
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/ijms11114539
URI: http://psasir.upm.edu.my/id/eprint/16948
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item