Ca信号在吊兰根负向光性中的作用  

Effects of Calcium Signal on the Negative Phototropism of Chlorophytum comosum var. variegata Root

作　　者：杨谷良[1] 蔡三娟[1] 陈艳[1] 陈娟[1] 

机构地区：[1]黄冈师范学院生命科学与工程学院,湖北黄冈438000

出　　处：《安徽农业科学》2011年第5期2552-2553,共2页Journal of Anhui Agricultural Sciences

基　　金：湖北省自然科学基金项目(2006ABA186);湖北省教育厅青年项目(Q200727004);省教育厅自科中青年基金项目(Q200727003)

摘　　要：[目的]研究Ca2+对吊兰根系负向光性的影响。[方法]在恒温条件下,对不同浓度CaCl2溶液中受单侧光照射后吊兰根的生长情况进行了研究。[结果]水培液中的Ca2+对吊兰根的生长和向性反应有显著影响;低浓度Ca2+促进根的生长,高浓度Ca2+抑制根的生长。其中,当Ca2+浓度为0.4 mmol/L时,吊兰根的生长和弯曲最为显著。[结论]吊兰根的负向光性受内源与外源Ca2+的综合影响。[Objective] The aim was to explore the effects of Ca2＋ on the negative phototropism of Chlorophytum comosum root.[Method] C.comosum were cultivated in different concentration of CaCl2 solution with unilateral light illuminated.[Result] The Ca2＋ in nutrient solution showed significant effect on the growth and tropic reaction of C.comosum;low concentration of Ca2＋ promoted root growth,while high concentrations of Ca2＋ inhibited the root growth.When the concentration of Ca2＋ was 0.4 mmol/L,the phenomenon of the negative phototropism and the root growth were the most obvious.[Conclusion] The root negative phototropism could be concluded to the comprehensive effect of the endogenous and exogenous Ca2＋.

关 键 词：吊兰 负向光性 CA2+ 信号转导 

分 类 号：Q945.13[生物学—植物学] S123[农业科学—农业基础科学]