Plant growth-promoting rhizobacteria stimulate vegetative growth and asexual rinfoeproduction of Kalanchoe daigremontiana

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Title
Plant growth-promoting rhizobacteria stimulate vegetative growth and asexual rinfoeproduction of Kalanchoe daigremontiana
Author(s)
Y S Park; K Park; J W Kloepper; Choong-Min Ryu
Bibliographic Citation
Plant Pathology Journal, vol. 31, no. 3, pp. 310-315
Publication Year
2015
Abstract
Certain bacterial species associate with plant roots in soil. The plant growth-promoting rhizobacteria (PGPR) stimulate plant growth and yield in greenhouse and field. Here, we examined whether application of known bacilli PGPR strains stimulated growth and asexual reproduction in the succulent plant Kalanchoe daigremontiana. Four PGPR strains B. amyloliquefaciens IN937a, B. cereus BS107, B. pumilus INR7, and B. subtilis GB03 were applied to young plantlets by soil-drenching, and plant growth and development was monitored for three months. Aerial growth was significantly stimulated in PGPR-inoculated plants, which was observed as increases in plant height, shoot weight, and stem width. The stimulated growth influenced plant development by increasing the total number of leaves per plant. Treatment with bacilli also increased the total root biomass compared with that of control plants, and led to a 2-fold increase in asexual reproduction and plantlet formation on the leaf. Collectively, our results firstly demonstrate that Bacillus spp. promote vegetative development of K. daigremontiana, and the enhanced growth stimulates asexual reproduction and plantlet formation.
Keyword
Asexual plant reproductionBacillus sppKalanchoe daigremontianaPlant growthPlant growthpromoting rhizobacteria (PGPR)Rhizosphere
ISSN
I000-0113
Publisher
Korea Soc-Assoc-Inst
DOI
http://dx.doi.org/10.5423/PPJ.NT.01.2015.0006
Type
Article
Appears in Collections:
Division of Research on National Challenges > Infectious Disease Research Center > 1. Journal Articles
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