几种盐地生植物同化器官的超微结构研究  

A study on the ultrastructure of assimilative organs of some plants in saline habitate

作　　者：郑文菊[1] 王勋陵[1] 沈禹颖[2] 

机构地区：[1]兰州大学生物系,兰州730000 [2]甘肃草原生态研究所

出　　处：《电子显微学报》1999年第5期507-512,共6页Journal of Chinese Electron Microscopy Society

基　　金：国家自然科学基金青年基金;国家自然科学基金

摘　　要：对几种盐地植物进行了电镜观察。结果表明，生长在盐地上的植物，表现出不同适应盐地的特征，是通过不同的抗盐方式来适应其生境。叶绿体和线粒体的膨胀是它们在结构上对盐的适应；而叶绿体脂质球数目多、含淀粉粒较多、外膜膨胀形成泡状结构，线粒体、粗糙内质网及核糖体数量的增加，则是抵抗盐害的方式。细胞器对盐分有适应，受伤害和不受影响三种反应。叶绿体内、外膜及类囊体呈膨胀状态，线粒体内、外膜及嵴的膨胀是对盐分的适应特征；而叶绿体、类囊体聚集、线粒体空泡化则是盐伤害特征；叶绿体。The ultrastructure of some plants in saline habitate was studied. The results showed that plants growing in saline habitate indicated different characteristics of adapted saline soil.There were different salt\|resistant forms to adapt their growth environment. The swelling of chloroplasts and mitochondria was the adaptation to saline soil in their structures; but chloroplasts owned a lot of lipid droplets, and contained starches and formed vesicles by swelling of the chloroplasts enevelope; the increase in the number of mitochondria, rough endoplasm reticulum and ribosomes was the forms of salt\|damaging resistance. The organella could adapt saline soil, or might be damaged by salinity, and in some conditions they would not be influenced by salinity. The swelling of chloroplasts envelope and lamellae and the swelling of mitochondria envelope and cristae were the characteristics of adapted saline soil; but the lamellae gathering, vacuolation of mitochondria were the characteristics of damage by salinity. The normal structure of chloroplast and mitochondria was the characteristic of not influencing by salinity. 

关 键 词：盐地生植物 超微结构 细胞器 同化 

分 类 号：Q942[生物学—植物学]