Novel compound specified in dune reed (Phragmites communis Trin.) and its possible role as a protectant on the chloroplasts under stress  

作　　者：Tongliang Pu Youfa Cheng Chenglie Zhang 

机构地区：[1]Lanzhou Univ, Inst Life Sci, Lanzhou 730000, Peoples R China

出　　处：《Chinese Science Bulletin》2000年第22期2062-2067,共6页

摘　　要：A small solute has been obtained with column chromatography, which only exists and accumulates in the leaves of dune reed in northwest China’s desert region. Its unique polyamine and aromatic features are quite different from those well-known ones accumulated under stresses. The natural quantity of the solute is strikingly proportional to the level of local high temperature, and a large section is distributed in the photosynthetic chloroplasts. Under lab conditions, we have proved that the solute plays a role in protecting or conserving chloroplasts under heat stress. So it is reasonable to suppose that the high resistance of dune reed to environmental high temperature and/or drought is at least partially due to the accumulation of this unique solute.A small solute has been obtained with column chromatography, which only exists and accumulates in the leaves of dune reed in northwest China’s desert region. Its unique polyamine and aromatic features are quite different from those well-known ones accumulated under stresses. The natural quantity of the solute is strikingly proportional to the level of local high temperature, and a large section is distributed in the photosynthetic chloroplasts. Under lab conditions, we have proved that the solute plays a role in protecting or conserving chloroplasts under heat stress. So it is reasonable to suppose that the high resistance of dune reed to environmental high temperature and/or drought is at least partially due to the accumulation of this unique solute.

关 键 词：high-temperature stress compatible SOLUTE PHRAGMITES commums natural habitat. 

分 类 号：Q948[生物学—植物学]