Comparative phytochemical and morphological analyses of three Italian Primula species
Comparative phytochemical and morphological analyses of three Italian Primula species
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DOI：
10.1016/j.phytochem.2007.04.019
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发表时间：
2007-06-01
期刊：
影响因子：
3.8
通讯作者：
Tome, Franca
中科院分区：
文献类型：
--
作者：
Fico, Gelsomina;Rodoni, Graziella;Tome, Franca
高山报春花属植物的分类一直存在争议，因为其形态变异性大，且有几个杂交种。在报春花属物种中，毛状体的高度和毛尖的颜色通常被表示为变音字符，但根据我们的经验，这是不够的。因此，本研究，重点放在报春，报春daonensis和报春hirsuta，因此建议使用其他形态毛状体参数（柄，颈和腺头的大小和尺寸比）。植物化学调查的类黄酮组成（表皮和液泡）的叶，作为分类标志，也已进行。本文报道了两个新的黄酮醇糖苷，异鼠李素3-O-（2，6-二-O-β-D-吡喃葡萄糖基-β-D-吡喃葡萄糖苷）（1）和山奈酚3-O-（2-O-α-L-吡喃鼠李糖基-6-O-β-D-吡喃木糖基-β-D-吡喃葡萄糖苷）（2）以及八个已知的黄酮类化合物的分离和鉴定。三个毛状体元素（茎，颈和腺头）的大小和尺寸比是典型的每个物种的分析。黄酮类化合物图谱很好地描述了所研究的实体。三个不同的配置文件已获得与液泡和epicuticular flavonoids.形态和植物化学标记在这项工作中提出的参数，这似乎是显着区分研究中的物种。(c)2007爱思唯尔有限公司版权所有。
The taxonomy of alpine Primula species has long been in dispute because of high morphologic variability and several hybridisations. In Primula species, the trichome height and the colour of hair-tips are usually indicated as diacritic characters, but in our experience this is not adequate. The present study, focused on Primula auricula, Primula daonensis and Primula hirsuta, therefore proposes the use of other morphologic trichome parameters (size and dimensional ratio of stalk, neck and gland head). Phytochemical investigations about the flavonoid composition (epicuticular and vacuolar) of leaves, as taxonomic markers, have also been performed. We report the isolation and identification of two new flavonol glycosides, isorhamnetin 3-O-(2,6-di-O-beta-D-glucopyranosyl-beta-D-glucopyranoside) (1) and kaempferol 3-O-(2-O-alpha-L-rhamnopyranosyl-6-O-beta-D-Xylopyranosyl-beta-D-glucopyranoside) (2) and of eight known flavonoids. Size and dimensional ratio of the three trichome elements (stalk, neck and glandular head) are typical for each species analysed. The flavonoid profile well characterise the entities under study. Three different profiles have been obtained with both vacuolar and epicuticular flavonoids.The morphologic and phytochemical markers proposed in this work seem to be parameters which significatively discriminate the species under study. (c) 2007 Elsevier Ltd. All rights reserved.