生物技术通报 ›› 2017, Vol. 33 ›› Issue (3): 66-70.doi: 10.13560/j.cnki.biotech.bull.1985.2017.03.010

• 研究报告 • 上一篇    下一篇

鸡血藤愈伤组织培养过程中内源激素变化研究

张亚芳1, 何钢1, 荣广天1, 刘贤桂2, 倪尚格3, 张世良3   

  1. 1. 中南林业科技大学生命科学与技术学院,长沙 410004;
    2. 中南林业科技大学林学院,长沙 410004;
    3. 广东常瑞林业有限公司,广州 510900
  • 收稿日期:2016-07-05 出版日期:2017-03-26 发布日期:2017-03-07
  • 作者简介:张亚芳,女,硕士,研究方向:生物化学与分子生物学;E-mail:3496219103@qq.com
  • 基金资助:
    国家林业公益性行业科技专项(201304807)

Changes of Endogenous Hormones During the Culture of Callus from Sopatholobus suberechtus

ZHANG Ya-fang1, HE Gang1, RONG Guang-tian1, LIU Xian-gui2, NI Shang-ge3, ZHANG Shi-liang3   

  1. 1. College of Life Science and Technology/Central South University of Forestry and Technology,Changsha 410004;
    2. College of Forestry/ Central South University of Forestry and Technology,Changsha 410004;
    3.Guangdong Changrui Forestry Co. Ltd.,Guangzhou 510900
  • Received:2016-07-05 Published:2017-03-26 Online:2017-03-07

摘要: 旨在建立密花豆组织培养再生体系并测定其再生过程中内源激素的动态变化。利用酶联免疫吸附法(ELISA)对密花豆嫩叶愈伤组织诱导与不定芽分化过程中的4种内源激素:生长素(IAA)、脱落酸(ABA)、玉米素(ZT)和赤霉素(GA3)的含量进行测定和分析。结果表明,在愈伤组织的诱导过程中,IAA的含量始终处于较高水平,并在愈伤组织生长最旺时达最大,而ABA、ZT和GA3的含量一直保持在较低水平;IAA/ABA对愈伤组织的诱导与生长有着重要的调节作用。在愈伤组织的分化过程中,IAA的含量呈先降后升,并在分化成芽期达到最高,且高于愈伤组织诱导期,介于1.15-1.87 μg/g之间;ZT和ABA的含量均呈先升后降趋势,而GA3则一直呈上升趋势;IAA/ABA呈先降后升趋势,对芽的分化与生长有着重要的促进作用;GA3/ABA和ZT/ABA呈先降后升趋势,协同促进鸡血藤愈伤组织成功分化出不定芽。内源激素对愈伤组织的诱导和分化成芽有着重要的影响,合适的浓度和比例能有效的促进外植体的脱分化与再分化,并协同促进细胞的分裂、分化和生长。

关键词: 鸡血藤, 愈伤组织诱导, 分化培养, 植物内源激素

Abstract: This work is to establish a regenerative system of Sopatholobus suberechtus tissue and determine the dynamic changes of endogenous hormones during the regeneration process. The enzyme-linked immunosorbent assay(ELISA)was used to determine and analyze the dynamic changes of four endogenous hormones(IAA,ABA,ZT,and GA3)contents during the callus induction and differentiation. As results,the content of IAA always kept at a high level and reached maximum when the callus growth was the most exuberant in the process of callus induction;while the contents of ABA,ZT and GA3 steadily remained at low levels;and IAA/ABA presented an important regulatory role on callus induction and growth. Further,the content of IAA decreased at first and rose then,reached the highest with 1.15-1.87 μg/g while differentiated to bud,and higher than that in callus induction period. ZT and ABA showed rising trend at first and then down later,while GA3 tended to rise continuously. Also IAA/ABA decreased at first and rose then,playing an important role in promoting bud differentiation and growth. GA3/ABA and ZT/ABA decreased at first and rose then,and promoted the successful differentiation of callus tissue to the adventitious bud in synergistic effects. In conclusion,the four kinds of endogenous hormones have important influences on callus induction and adventitious bud differentiation,the appropriate concentration and ratio of them may effectively promote the explants dedifferentiation and re-differentiation,and they synergistically promote cell division,differentiation and growth.

Key words: Sopatholobus suberechtus Dunn, callus induction, differentiation culture, plant endogenous hormones