Synthesis of phenolics and flavonoids in ginger (Zingiber officinale Roscoe) and their effects on photosynthesis rate.
Synthesis of phenolics and flavonoids in ginger (Zingiber officinale Roscoe) and their effects on photosynthesis rate.
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DOI：
10.3390/ijms11114539
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发表时间：
2010-11-15
影响因子：
5.6
通讯作者：
Rahmat A
中科院分区：
文献类型：
--
作者：
Ghasemzadeh A;Jaafar HZ;Rahmat A
以310、460、630和790 μmol m−2s−1 4个温室光强下栽培的2个马来西亚姜（Zingiber officinale）品种为材料，研究了酚类物质和黄酮合成积累与光合速率的关系。采用高效液相色谱法（HPLC）对其多酚成分进行鉴定和定量。HPLC分析结果表明，在310 μmol m−2s−1条件下，槲皮素、芦丁、儿茶素、表儿茶素和柚皮素的合成和分配较高。随着光照强度的降低，两个品种叶片黄酮类化合物的平均合成值均有所增加（本桐26.1%，巴拉19.5%）。两个品种的光合速率和植物生物量均随光照强度的增加而增加。其中，在790 μmol m−2s−1条件下，Bara的光合速率为12.25 μmol CO2−1，Halia Bentong的生物量为79.47 g。光合速率最低的植株黄酮类化合物含量最高。前人的研究表明槲皮素抑制光合作用光系统的电子传递速率，水杨酸诱导光合作用光系统的电子传递速率。在本研究中，槲皮素是两种生姜品种中含量丰富的类黄酮。在310 μmol m−2s−1条件下生长的黑草叶中槲皮素含量较高，为1.12 mg/g干重。另外，在790 μmol m−2s−1处理条件下，白顶叶中水杨酸含量较高（0.673 mg/g干重），光合速率较高。在310 μmol m−2s−1下生长的生姜中未检测到水杨酸。姜是一种半遮荫植物，光合作用不需要高强度的光。不同光强下不同的光合速率可能与某些类黄酮和酚类化合物的缺失或存在有关。
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 CO2 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.
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影响因子：
6.5
作者：
Briskin, DP;Gawienowski, MC
通讯作者：
Gawienowski, MC
DOI：
10.3390/molecules15096231
发表时间：
2010-09-03
期刊：
Molecules (Basel, Switzerland)
影响因子：
--
作者：
Ghasemzadeh A;Jaafar HZ;Rahmat A
通讯作者：
Rahmat A
影响因子：
6.1
作者：
Katsube, T;Tabata, H;Yamane, Y
通讯作者：
Yamane, Y
影响因子：
8.8
作者：
Chan, E. W. C.;Lim, Y. Y.;Lim, T. Y.
通讯作者：
Lim, T. Y.
影响因子：
5.2
作者：
Díaz, J;Bernal, A;Merino, F
通讯作者：
Merino, F