幼叶黄化油菜(Brassica napus L.)突变体Cr3529叶绿体超微结构观察  

Observation of the Chloroplast in Chlorophyll-reduced Seedling Mutant Cr3529, Brassica napus L.

作　　者：赵云[1] 王茂林[1] 李江[1] 张义正[1] 

机构地区：[1]四川大学生命科学学院,成都610064

出　　处：《四川大学学报（自然科学版）》2003年第5期974-977,共4页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(30170500)

摘　　要：对油菜Cr3529叶片细胞中的叶绿体数目及结构进行了显微及亚显微观察.结果显示,突变与野生型细胞中叶绿体的数目没有显著性的差异,但叶绿体的结构有较大的差异.较之正常油菜,Cr3529油菜叶绿体基粒类囊体数较少,基质类囊体数较多,而且,在基粒类囊体中基粒片层数也较少,大部分基粒只有几个片层,基粒的平均片层数为5.46,约为野生型的一半.作者认为,较少的基粒片层数可能是引起Cr3529油菜叶绿素含量减少,并最终导致植株显著减产的重要原因.The Chloroplasts of Chlorophyllreduced seedling mutant Cr3529 were observed by microscopy and submicroscopy. The results showed that the number of plastids per cell in Cr3529 was closer to that in wild type 3529. Compared with the wild type, the plastid in Cr3529 had fewer and smaller grana and the average number of lamellae per grana was 5.46, about one half of that of the wild type. These maybe resulted in the remarkable reduction of chlorophyll content and yield production of Cr3529 mutant.

关 键 词：甘蓝型油菜 叶绿体 黄化突变 结构 

分 类 号：Q244[生物学—细胞生物学]