摘要
本对ＣＯ２正常浓度（３５０μＬ／Ｌ）和ＣＯ２倍增（７００μＬ／Ｌ）条件下，小麦（ＴｒｉｔｉｃｕｍａｅｓｔｉｖｕｍＬ．）、水稻（ＯｒｙｚａｓａｔｉｖａＬ．）和高粱（ＳｏｒｇｈｕｍｖｕｌｇａｒｅＰｅｒｓ．）等３种禾本科植物叶肉及维管束鞘细胞中叶绿体的数目，叶绿体的超微结构等进行了比较研究。在光镜和透射电镜下的观测结果表明：高浓度ＣＯ２可促进３种禾本科植物叶绿体的发育，使之数量增多、体积增大；叶绿体中淀粉粒积累增多、体积增大。其中，Ｃ４植物的高粱叶绿体中淀粉粒数量明显增加，而叶绿体光合膜的结构却受到很大破坏；Ｃ３植物的小麦和水稻叶绿体光合膜则受到的影响较小。
In this paper,the effects of CO 2 concentration on the number of choroplast and ultrastructure of choroplast in the mesophyll cell and the bundle sheath cell from 3 graminoid plants ( Triticum aestivum,Oryza sativa,Sorghum vulgare ) were compared following their exposure to normal (350 μL/L) and doubled (700 μL/L) carbon dioxide concentration. The results indicated that different species had varied response to CO 2 enrichment.In general,under elevated CO 2 concentration,the numbers of choroplast in the mesophyll cell and the bundle sheath cell were increased,chloroplast ultrastructure of C 4 plant changed more significantly than that of C 3 species and starch grain accumulation enriched obviously.
出处
《西北植物学报》
CAS
CSCD
1998年第3期330-334,共5页
Acta Botanica Boreali-Occidentalia Sinica
基金
国家自然科学基金
