常绿杨根伸长区铝毒指标性超微结构的研究  

Indicative effects of acid and aluminum stress on cell ultrastructure in root elongation zone of evergreen poplar clone

作　　者：吴文杰[1] 钱莲文[2] 

机构地区：[1]泉州师范学院化学与生命学院,福建泉州362000 [2]泉州师范学院资源与环境学院,福建泉州362000

出　　处：《中南林业科技大学学报》2015年第11期5-9,共5页Journal of Central South University of Forestry & Technology

基　　金：国家自然科学基金项目(31100459);福建省教育厅A类科技计划项目(JA12272)

摘　　要：以常绿杨Populus×enramericana cv.A-61/186根尖为材料,研究根伸长区细胞铝中毒的超微结构标志性特征。结果表明:(1)低度慢性(0.074 mmol/L 90 d)中毒结构指标:细胞壁"弯勾壁"(Hook wall)呈大小勾状且部分壁断裂,"梭形胞基质"(Spindle cell stroma)瘦长形且具孔洞;(2)中度中性(0.370 mmol/L,60 d)中毒结构指标:细胞壁间隙和局部胞间层溶解,"梭形胞基质"(Spindlecell stroma)分解呈松长线团状;(3)高度急性(0.518 mmol/L,30 d)中毒结构指标:细胞壁溶解,"弯勾壁"(Hook wall)呈多个细长勾重叠,"梭形胞基质"(Spindle cell stroma)多个细长具孔洞。本次实验发现并提出的"弯勾壁"(Hook wall)和"梭形胞基质"(Spindle cell stroma)这两个超微结构名词,填补了铝中毒诊断的结构指标,充实了细胞毒理解剖学内容。The indicative effect of ultrastructure of root cap cells were studied under controlled concentration and acting time with evergreen poplar clone （Populus×enramericana cv.A-61/186）. The results show as follows. Low-grade chronic toxicosis indication （0.074 mmol/L, 90 dats）： Cell wall showed as “Hook wall” of different size and parts of wall were broken, “Spindle cell stroma” appeared as slender shape with holes on it; Moderate neutral toxicosis indication （0.370 mmol/L, 60 days）： The intercellular space of cells and middle lamella began to decompose, “Spindle cell stroma” were loosen and presented as long thread shape; Highly acute toxicosis indication （0.518 mmol/L, 30 days）： Cell wall were decomposed and the hook of “Hook wall” were thin and long and overlap, “Spindle cell stroma” appeared as thin and long shape with many holes on it. The new cell ultrastructure noun “Hook wall” and “Spindle cell stroma” were founded and proposed in the experiment. The ifndings ifll in the blanks of diagnosing ultrastructure indication of aluminum poison and enrich the contents of cell toxicity of anatomy.

关 键 词：常绿杨 根伸长区 细胞铝毒害 铝中毒诊断 超微结构指标 

分 类 号：S792.11[农业科学—林木遗传育种]