盐胁迫对拟南芥叶片和下表皮细胞大小的影响（摘要）

目的]探讨盐胁迫对拟南芥叶片发育的影响。方法]用浓度分别为0、100和150mmol/L的NaCl溶液处理拟南芥幼苗7d和14d后,用改进的指甲油印迹法并借助计算机软件,测量了不同处理的叶片面积和下表皮细胞面积。并对不同处理的叶片和细胞面积进行了差异性检验和比较。结果]盐胁迫下,拟南芥叶片的生长受到显著抑制。叶片大小、叶片下表皮细胞的大小都相应减小。结论]叶片及表皮细胞的减小是植物盐胁迫条件下的重要生理指标。

Effects of Salt Stress on Epidermal Cell Expansion in Leaves of Arabidopsis thaliana

Objective] The aim of this study was to investigate the effects of salt stress on cell expansion in Arabidopsis thaliana rosette leaves.Method] Arabidopsis seedlings were treated by sodium chloride at the concentration of 0,100 or 150 mmol/L. At the 7th and 14th d of treatment,with nail enamel printing mark method and computer software,the leaf blades area and abaxial epidermal pavement cells area was measured and compared using statistical analysis in Excel. Result] The growth of Arabidopsis rosette leaves was inhibited under salt stress. Leaves treated for 7 or 14 d expanded less compared with controls. The salt-mediated decrease in leaf expansion is associated with a decrease in abaxial pavement cell expansion. Conclusion] The decreased leaf and epidermal cell expansion under salt stress is the most important characteristic of plant physiological response to salt stress.