Beneficial soil microbe promotes seed germination, plant growth and photosynthesis in herbal crop Codonopsis pilosula

Yong Na Wu, Yu Lan Feng, Paul W. Paré, Ying Long Chen, Rui Xu, Shan Wu, Suo Min Wang, Qi Zhao, Hui Ru Li, Yin Quan Wang, Jin Lin Zhang

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Bacillus subtilis strain GB03 enhances growth and photosynthesis in the model plant Arabidopsis thaliana and several crop plants. In the present study, the effects of seed soaking with GB03 suspension culture and its volatile organic compounds on seed germination of Codonopsis pilosula (Franch.) Nannf. were investigated, and soil-grown C. pilosula seedlings were assayed to measure growth and photosynthetic capacity after soil inoculation with GB03. Both seed soaking with GB03 suspension culture and the presence of volatile organic compounds enhanced seed germination, especially seed germination vigour. GB03 significantly improved shoot and root length, branching, plant biomass (whole plant fresh and dry weight), leaf area and chlorophyll content in C. pilosula seedlings after 20, 40 and 60 days of soil inoculation. GB03 significantly enhanced transpiration rate, stomatal conductance and net photosynthetic rate, but decreased intercellular CO2 concentration. This study provides insight for the application of selected bacteria to improve biomass in Chinese herbal crops.

Original languageEnglish
Pages (from-to)91-98
Number of pages8
JournalCrop and Pasture Science
Volume67
Issue number1
DOIs
StatePublished - 2016

Keywords

  • Bacillus subtilis
  • Codonopsis pilosula
  • growth promotion
  • photosynthesis
  • seed germination

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