莲子草假隔链格孢毒素对空心莲子草叶片和根尖组织超微结构的影响  

Effects of vulculic acid on the ultrastructure of leaf and root tip tissues of Alternanthera philoxeroides

作　　者：张云霞[1] 范兰兰[2] 施祖荣[1] 姜子德[2] 黄江华[1] 向梅梅[1] 

机构地区：[1]仲恺农业工程学院农学院,广州510225 [2]华南农业大学资源与环境学院,广州510642

出　　处：《华中农业大学学报》2011年第1期84-88,共5页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金(30671382);广东省自然科学基金项目(6022863)

摘　　要：用不同质量浓度的莲子草假隔链格孢毒素处理空心莲子草叶片和根尖,研究毒素对组织超微结构的影响。结果表明:毒素处理后,叶片细胞质壁分离、质膜消解,叶绿体片层紊乱、膜消解,线粒体膜破裂、嵴消解;根尖细胞质壁分离、质膜消解,线粒体膜破裂、嵴消解,分生区和表皮细胞空泡化并萎缩。随毒素质量浓度的增加和处理时间的延长,对叶片和根尖细胞破坏作用逐渐增强。The leaf and root tip tissues of Alternanthera philoxeroides were treated with vulculic acid of different concentrations to study the effects of vulculic acid on the ultrastructure. The results showed that the damages appeared as the disruption of plasma membrane, digestion of the membrane of chloroplast and mitochondria, disorder of chloroplast lamellae, digestion of mitochondria ridge in leaf tissue,disruption of plasma membrane, digestion of mitochondria membrane and ridge, vacuolation and shrinking of meristematic and epidermal cells in root tip tissue. The severity of damages was increased with the increasing concentration of toxin and time of treatment.

关 键 词：空心莲子草 莲子草假隔链格孢 超微结构 

分 类 号：S432.1[农业科学—植物病理学]