Department of Environmental Science, University of Eastern Finland, Kuopio, Finland.
Phytochemistry. 2011 Jun;72(8):810-5. doi: 10.1016/j.phytochem.2011.02.015. Epub 2011 Mar 5.
Hybridization between species plays an important role in the evolution of secondary metabolites and in the formation of combinations of existing secondary metabolites in plants. We have investigated the content of phenolic compounds in berries and flowers of Vaccinium×intermedium Ruthe, which is a rare natural hybrid between bilberry (Vaccinium myrtillus L.) and lingonberry (Vaccinium vitis-idaea L.). The berries and flowers of the hybrid showed characteristics inherited from both parent species in the distribution and contents of phenolic compounds. Bilberry is known as one of the richest sources of anthocyanins and to have a profile of 15 major forms combining cyanidin, delphinidin, petunidin, peonidin and malvidin with galactose, glucose and arabinose. Lingonberry contains only cyanidin glycosides. Hybrid berries contained all bilberry anthocyanins with pronounced cyanidin content. With regard to proanthocyanidins and flavonol glycosides, the hybrid inherited diverse profiles combining those of both parental species. The distribution of hydroxycinnamic acids was quite uniform in all studied berries. Of the identified compounds, 30 were detected in lingonberry, 46 in bilberry, 53 in hybrid berries and 38 in hybrid flowers. Hence, compared with the parent species, hybrid berries possess a more diverse profile of phenolic compounds and, therefore, can offer interesting material for breeding purposes.
种间杂交在次生代谢产物的进化和植物中现有次生代谢产物的组合形成中起着重要作用。我们研究了越橘（Vaccinium×intermedium Ruthe）浆果和花朵中的酚类化合物含量，越橘是越橘（Vaccinium myrtillus L.）和蔓越莓（Vaccinium vitis-idaea L.）之间罕见的天然杂种。杂种的浆果和花朵在酚类化合物的分布和含量上表现出从双亲继承的特征。越橘是已知的花青素最丰富的来源之一，具有 15 种主要形式的组合，其中包括矢车菊素、天竺葵素、飞燕草素、芍药素和锦葵素与半乳糖、葡萄糖和阿拉伯糖结合。蔓越莓只含有飞燕草素糖苷。杂种浆果含有所有越橘类的花青素，且矢车菊素含量明显较高。关于原花青素和黄酮醇糖苷，杂种继承了双亲物种的多样化特征。羟基肉桂酸在所有研究的浆果中分布相当均匀。在所鉴定的化合物中，30 种在蔓越莓中检测到，46 种在越橘中检测到，53 种在杂种浆果中检测到，38 种在杂种花中检测到。因此，与亲本品系相比，杂种浆果具有更丰富的酚类化合物特征，因此可以为育种目的提供有趣的材料。
