叶籽银杏发端期分泌腔发育过程中的细胞程序性死亡  

Programmed Cell Death in the Development Process of Secretory Cavities of Ovule 'Gibbosity' at the Initial Stage of Ginkgo biloba var.epiphylla

作　　者：黄岩[1] 邢世岩[1] 

机构地区：[1]山东农业大学林学院,山东泰安271018

出　　处：《西南林业大学学报（自然科学）》2012年第3期1-6,F0002,F0003,共8页Journal of Southwest Forestry University：Natural Sciences

基　　金：国家自然科学基金项目(30671707;30872040)资助

摘　　要：以普通银杏为对照,通过树脂半薄切片和扫描电镜观察,研究叶籽银杏胚珠分泌腔的发育过程。结果表明:叶籽银杏胚珠具有发达的分泌结构,2种银杏分泌腔在发育中均表现出细胞程序性死亡的特征。其表现为:随着胞间隙的形成,细胞壁先解体,之后中央分泌细胞解体,随后其相邻的细胞降解,分泌泡被临近的细胞吞噬,无炎症反应,表明是自体吞噬的作用,最终形成分泌腔。二者的分泌腔均属于裂溶生型分泌腔。Taking the common Ginkgo biloba plants as control, the development process of the ovule secretory cavities of Ginkgo biloba var. epiphylla was observed by means of resin slicing and scanning electron microscope. The results Showed that there was well developed secretory structure in the ovule of Ginkgo biloba var. epiphylla, and both of the two species showed the characteristics of PCD （programmed cell death） in the development cause of the secretory cavities in the ovule. The PCD phenomenon was exhibited by the following procedure： the cell wall was disintegrated along with the formation of intercellular space; followed by the disintegration of the central secre- tory cells; then the neighboring cells degraded; the secretory vesicles were swallowed by adjacent phagocytic cells without inflammatory response, which showed the autophagy function before the secretory cavities were formed. The secretory cavities of both Ginkgo biloba var. epiphylla and Ginkgo biloba belonged to schizo-lysigeneous secretory

关 键 词：叶籽银杏 分泌腔 细胞程序性死亡 

分 类 号：S718.47[农业科学—林学] S664.3