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应用生态学报 ›› 2021, Vol. 32 ›› Issue (9): 3321-3326.doi: 10.13287/j.1001-9332.202109.029

• 研究论文 • 上一篇    下一篇

两株链霉菌对非洲菊生长和生理生化指标的影响

胡小京1, 敖飞雄1, 石乐娟2, 彭强1, 李欣1, 周小会1, 陈孝玉龙1*   

  1. 1贵州大学农学院/烟草学院, 贵阳 550025;
    2贵州省农业科学院园艺研究所, 贵阳 550006
  • 收稿日期:2021-01-28 接受日期:2021-06-27 出版日期:2021-09-15 发布日期:2022-03-15
  • 通讯作者: * E-mail: chenxiaoyulong@sina.cn
  • 作者简介:胡小京, 女, 1969年生, 副教授。主要从事观赏园艺植物栽培生理和生物技术研究。E-mail: gdhxjyy@163.com
  • 基金资助:
    国家自然科学基金项目(31701836)、贵州省科技厅基础研究计划项目(2019-1410,2018-1050)、贵州省大学生创新创业训练计划项目[贵大(省)创字2020-079]和贵州大学大学生“SRT”计划项目(2021-248,2021-258,2021-330)资助

Effects of two Streptomyces strains on growth and physiological properties of Gerbera jamesonii

HU Xiao-jing1, AO Fei-xiong1, SHI Le-juan2, PENG Qiang1, LI Xin1, ZHOU Xiao-hui1, CHEN Xiao-yulong1*   

  1. 1College of Agriculture/College of Tobacco Science, Guizhou University, Guiyang 550025, China;
    2Institute of Horticulture, Guizhou Academy of Agricultural Science, Gui-yang 550006, China
  • Received:2021-01-28 Accepted:2021-06-27 Online:2021-09-15 Published:2022-03-15
  • Contact: * E-mail: chenxiaoyulong@sina.cn
  • Supported by:
    National Natural Science Foundation of China (31701836), Guizhou Provincial Science and Technology Program (2019-1410, 2018-1050), Guizhou College Students' Innovation and Entrepreneurship Training Program (2020-079) and Guizhou University “SRT” Program (2021-248, 2021-258, 2021-330).

摘要: 本研究以非洲菊(Gerbera jamesonii)为试材,采用不同浓度的脱叶链霉菌FT05W和深蓝链霉菌ZEA17I孢子悬浮液浇灌盆栽非洲菊,筛选出非洲菊的最佳施用浓度,探索两株链霉菌对非洲菊生长和生理生化指标的影响,为非洲菊生产上科学合理施用链霉菌提供理论依据。结果表明: 脱叶链霉菌FT05W和深蓝链霉菌ZEA17I不同浓度孢子悬浮液均能有效促进非洲菊的生长,前者对非洲菊的作用效果优于后者,以浓度为1×109 CFU·mL-1的脱叶链霉菌FT05W效果最好。与蒸馏水对照相比,该处理显著促进了非洲菊株高(30.2%)和冠幅(41.5%)的生长,并在一定程度上促进了花茎的增长和增粗;能显著提高非洲菊植株叶片的叶绿素含量(65.2%)、根系活力(103.3%)和超氧化物歧化酶活性(84.4%),使丙二醛含量维持在较低的水平。因此在一定的浓度范围内,脱叶链霉菌FT05W和深蓝链霉菌ZEA17I均能有效促进非洲菊的生长,有利于非洲菊植株体内同化物的转运和积累,增强非洲菊植株抗逆性,特别是脱叶链霉菌FT05W具有在未来作为生物肥料解决非洲菊连作障碍的应用潜力。

关键词: 非洲菊, 链霉菌, 孢子悬浮液, 生长, 生理特性

Abstract: We applied different concentrations of spore suspension of Streptomyces exfoliatus FT05W and S. cyaneus ZEA17I to inoculate Gerbera jamesonii to screen for the most effective application concentration. We aimed to explore the effects of two Streptomyces strains on growth and physiological properties of G. jamesonii, and to provide scientific evidence for the application of Streptomyces in G. jamesonii production. The results showed that different concentrations of S. exfoliatus FT05W and S. cyaneus ZEA17I spore suspension could effectively promote the growth of G. jamesonii. In general, S. exfoliatus FT05W performed better than S. cyaneus ZEA17I. S. exfoliatus FT05W (1×109 CFU·mL-1) could significantly increase the height and crown width of G. jamesonii respectively by 30.2% and 41.5%. Meanwhile, it increased the length and width of the stem. When treated by S. exfoliatus FT05W (1×109 CFU·mL-1), the content of chlorophyll in G. jamesonii was significantly increased by 65.2%, root activity was significantly increased by 103.3%, and the superoxide dismutase activity was increased by 84.4%. The malondialdehyde content in G. jamesonii was maintained at a low level when treated with the two Streptomyces strains. In summary, S. exfoliatus FT05W and S. cyaneus ZEA17I could effectively promote the growth and physiological properties of G. jamesonii, which could further contribute to its resistance to stress. Therefore, S. exfoliatus FT05W had the potential as a bio-fertilizer for G. jamesonii to solve cultivation obstacles.

Key words: Gerbera jamesonii, Streptomyces, spore suspension, growth, physiological property