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Efficacy of Rhizobacteria on plant growth promotion and disease suppression in vitro

Siva Velivelli, Eileen O'Herlihy, Bogumila Janczura, Jonas Ghyselinck UGent and Paul De Vos UGent (2012) Acta Horticulturae. 961. p.525-532
abstract
This research examines the effect of selected rhizobacteria for pathogen antagonistic and plant growth promotion activities in potato. A total of 22 rhizobacterial isolates collected from potato fields were tested in vitro for antagonism against R. solani and also for their plant growth promotion, indole acetic acid (IAA), 1-aminocyclopropane-1-carboxylate (ACC) deaminase production, phosphate solubilization ability and pathogen suppression activities in potato. Of 22 isolates, 11 were identified as Pseudomonas spp., 10 were identified as Bacillus spp. and one as an Enterobacter sp. All 22 isolates showed antagonistic activity on plate assays against R. solani ranging from 26.9 to 53.4% while the positive controls namely, Bacillus subtilis FZB24® WG and Pseudomonas fluorescens CHAO suppressed the growth of R. solani by 21.3 and 19.8%. Four isolates (18%) positively produced the phytohormone IAA, 17 (77%) had ACC deaminase activity and 19 (86%) solubilized phosphorous. Bacteria were examined for their plant growth promotion and disease suppression effects in in vitro potato after one week bacterization followed by three weeks of pathogen challenge. Over half of the rhizobacterial strains showed a significant effect on plant growth in vitro with a total plant fresh weight ranging from 1.44 to 2.04 g while the control, Bacillus subtilis FZB24® WG and Pseudomonas fluorescens CHAO had a fresh weight of 1.34, 1.62 and 1.51 g, respectively. Disease suppression activity was measured in terms of plant weight which ranged from 1.10 to 1.76 g while the control, Bacillus subtilis FZB24® WG and Pseudomonas fluorescens CHAO had 1.15, 1.33 and 1.29 g, respectively. These preliminary results suggest that the rhizobacteria studied have potential as biocontrol agents.
Please use this url to cite or link to this publication:
author
organization
year
type
conference (proceedingsPaper)
publication status
published
subject
keyword
phosphate solubilization, Rhizoctonia solani, biocontrol, rhizobacteria, BIOCONTROL, ACC, potato, BACTERIA, ACC-DEAMINASE, IAA, BIOLOGICAL-CONTROL
in
Acta Horticulturae
Acta Hortic.
editor
Danny Geelen UGent
volume
961
issue title
VII International symposium on in vitro culture and horticultural breeding
pages
525 - 532
publisher
International Society for Horticultural Science (ISHS)
place of publication
Leuven, Belgium
conference name
7th International symposium on In Vitro Culture and Horticultural Breeding
conference location
Ghent, Belgium
conference start
2011-09-18
conference end
2011-09-22
Web of Science type
Proceedings Paper
Web of Science id
000323607700069
ISSN
0567-7572
ISBN
9789066055957
language
English
UGent publication?
yes
classification
P1
copyright statement
I have transferred the copyright for this publication to the publisher
id
3055686
handle
http://hdl.handle.net/1854/LU-3055686
alternative location
http://www.actahort.org/books/961/961_69.htm
date created
2012-11-20 13:08:01
date last changed
2017-01-02 09:53:29
@inproceedings{3055686,
  abstract     = {This research examines the effect of selected rhizobacteria for pathogen antagonistic and plant growth promotion activities in potato. A total of 22 rhizobacterial isolates collected from potato fields were tested in vitro for antagonism against R. solani and also for their plant growth promotion, indole acetic acid (IAA), 1-aminocyclopropane-1-carboxylate (ACC) deaminase production, phosphate solubilization ability and pathogen suppression activities in potato. Of 22 isolates, 11 were identified as Pseudomonas spp., 10 were identified as Bacillus spp. and one as an Enterobacter sp. All 22 isolates showed antagonistic activity on plate assays against R. solani ranging from 26.9 to 53.4\% while the positive controls namely, Bacillus subtilis FZB24{\textregistered} WG and Pseudomonas fluorescens CHAO suppressed the growth of R. solani by 21.3 and 19.8\%. Four isolates (18\%) positively produced the phytohormone IAA, 17 (77\%) had ACC deaminase activity and 19 (86\%) solubilized phosphorous. Bacteria were examined for their plant growth promotion and disease suppression effects in in vitro potato after one week bacterization followed by three weeks of pathogen challenge. Over half of the rhizobacterial strains showed a significant effect on plant growth in vitro with a total plant fresh weight ranging from 1.44 to 2.04 g while the control, Bacillus subtilis FZB24{\textregistered} WG and Pseudomonas fluorescens CHAO had a fresh weight of 1.34, 1.62 and 1.51 g, respectively. Disease suppression activity was measured in terms of plant weight which ranged from 1.10 to 1.76 g while the control, Bacillus subtilis FZB24{\textregistered} WG and Pseudomonas fluorescens CHAO had 1.15, 1.33 and 1.29 g, respectively. These preliminary results suggest that the rhizobacteria studied have potential as biocontrol agents.},
  author       = {Velivelli, Siva and O'Herlihy, Eileen and Janczura, Bogumila and Ghyselinck, Jonas and De Vos, Paul},
  booktitle    = {Acta Horticulturae},
  editor       = {Geelen, Danny},
  isbn         = {9789066055957},
  issn         = {0567-7572},
  keyword      = {phosphate solubilization,Rhizoctonia solani,biocontrol,rhizobacteria,BIOCONTROL,ACC,potato,BACTERIA,ACC-DEAMINASE,IAA,BIOLOGICAL-CONTROL},
  language     = {eng},
  location     = {Ghent, Belgium},
  pages        = {525--532},
  publisher    = {International Society for Horticultural Science (ISHS)},
  title        = {Efficacy of Rhizobacteria on plant growth promotion and disease suppression in vitro},
  url          = {http://www.actahort.org/books/961/961\_69.htm},
  volume       = {961},
  year         = {2012},
}

Chicago
Velivelli, Siva, Eileen O’Herlihy, Bogumila Janczura, Jonas Ghyselinck, and Paul De Vos. 2012. “Efficacy of Rhizobacteria on Plant Growth Promotion and Disease Suppression in Vitro.” In Acta Horticulturae, ed. Danny Geelen, 961:525–532. Leuven, Belgium: International Society for Horticultural Science (ISHS).
APA
Velivelli, S., O’Herlihy, E., Janczura, B., Ghyselinck, J., & De Vos, P. (2012). Efficacy of Rhizobacteria on plant growth promotion and disease suppression in vitro. In D. Geelen (Ed.), Acta Horticulturae (Vol. 961, pp. 525–532). Presented at the 7th International symposium on In Vitro Culture and Horticultural Breeding, Leuven, Belgium: International Society for Horticultural Science (ISHS).
Vancouver
1.
Velivelli S, O’Herlihy E, Janczura B, Ghyselinck J, De Vos P. Efficacy of Rhizobacteria on plant growth promotion and disease suppression in vitro. In: Geelen D, editor. Acta Horticulturae. Leuven, Belgium: International Society for Horticultural Science (ISHS); 2012. p. 525–32.
MLA
Velivelli, Siva, Eileen O’Herlihy, Bogumila Janczura, et al. “Efficacy of Rhizobacteria on Plant Growth Promotion and Disease Suppression in Vitro.” Acta Horticulturae. Ed. Danny Geelen. Vol. 961. Leuven, Belgium: International Society for Horticultural Science (ISHS), 2012. 525–532. Print.