水杨酸对八仙花组培苗铝胁迫的缓解效应  

Exogenous Treatment with Salicylic Acid Alleviates Aluminum Stress in Tissue Culturing Seedings of Hdrangea macrophylla

作　　者：陈海霞[1] 张虓峰 蒋辉[1] CHEN Hai-Xia;ZHANG xiao-feng;JIANG Hui(College of Horticulture and Landscape,Hunan Agricultural University,Changsha 410128,China;Hunan Guangyi Experimental Middle School,Changsha 410001,China)

机构地区：[1]湖南农业大学园艺园林学院,湖南长沙410128 [2]湖南广益实验中学,湖南长沙410001

出　　处：《湖南生态科学学报》2018年第1期1-6,共6页Journal of Hunan Ecological Science

基　　金：国家自然科学基金项目(31201656);湖南自然科学基金项目(2017JJ3105)

摘　　要：为了探讨和分析高耐铝植物的生态恢复作用,采用不同浓度水杨酸(SA)和AlCl_3溶液共同对生长一致的八仙花组培苗进行胁迫处理,研究SA对其铝毒害的缓解效应。通过形态观察和可溶性糖、丙二醛(MDA)、过氧化物酶(POD)、超氧化物歧化酶(SOD)等生理指标分析,结果表明SA不能消除铝胁迫对植株生长的抑制作用,高浓度会产生毒害效果,但低浓度SA能够有效降低质膜过氧化损伤,增加植株中SOD和POD活性,提高可溶性糖的含量,减少MDA的积累,从而缓解铝胁迫的毒害。To investigate and analyze the ecological restoration of the plant with high aluminum resistance,the tissue culture seedlings of hydrangea macrophylla were exogenously treated with different concentration of salicylic acid(SA)and AlCl 3 solution to study the alleviative effect of SA on its al toxicity.Through morphological observation and the analysis of physiological indexes such as soluble sugar,malondialdehyde(MDA),peroxidase(POD)and superoxide dismutase(SOD),the results show that SA could not eliminate aluminum stress on plant growth,and high concentration would produce toxic effect,but the low concentration of SA could effectively reduce the damage of plasma membrane peroxidation and increase the activity of SOD and POD in the plant and increase the content of soluble sugar and reduce the accumulation of MDA,and thus to relieve the poisoning of aluminum stress.

关 键 词：八仙花 组培苗 铝胁迫 水杨酸 缓解效应 

分 类 号：Q813.1[生物学—生物工程]