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Strategies for administration of biosurfactants-producing pseudomonads in closed hydroponic systems

Hultberg, Malin and Holmkvist, Anna and Alsanius, Beatrix (2011). Strategies for administration of biosurfactants-producing pseudomonads in closed hydroponic systems. Crop protection. 30:8, 995-999
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Official URL: http://dx.doi.org/10.1016/j.cropro.2011.04.012

Abstract

Zoospore-producing oomycetes are major plant pathogens of particular concern in hydroponic systems. Compared with pesticides, biocontrol using antagonistic microorganisms is a sustainable approach to control oomycetes. Previous research has demonstrated that biosurfactants and biosurfactant-producing microorganisms are potentially useful components of a sustainable biocontrol strategy.
In this study three ways of supplying a biosurfactant-producing strain to a recirculating hydroponic cultivation system infected with a zoospore-producing plant pathogen were evaluated. The strain P. koreensis 2.74 was added as washed cells, in its spent KB broth or in a minimal medium adapted from the nutrient solution, and compared with control treatments. A significant reduction in disease with up to 50% was achieved when a high concentration of washed cells was added weekly to the plant cultivation system. The disease suppression obtained through addition of washed cells equalled the effect achieved when the purified biosurfactant was used. Phytotoxicity was observed when the spent broth was included in the treatment.

Authors/Creators:Hultberg, Malin and Holmkvist, Anna and Alsanius, Beatrix
Title:Strategies for administration of biosurfactants-producing pseudomonads in closed hydroponic systems
Series/Journal:Crop protection (0261-2194)
Year of publishing :2011
Volume:30
Number:8
Page range:995-999
Publisher:Elsevier
Associated Programs and Other Stakeholders:Z - SLU - Libray > Odla mera
ISSN:0261-2194
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Agris subject categories.:H Protection of plants and stored products > H10 Pests of plants
H Protection of plants and stored products > H20 Plant diseases
T Pollution > T01 Pollution
Subjects:Obsolete subject words > NATURAL SCIENCES > Biology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Environmental Sciences related to Agriculture and Land-use
Keywords:Biological control, Biosurfactants, Greenhouse, Lettuce, Zoospores
URN:NBN:urn:nbn:se:slu:epsilon-e-145
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-145
Additional ID:
Type of IDID
DOI10.1016/j.cropro.2011.04.012
ID Code:8203
Department:(LTJ, LTV) > Horticulture (until 121231)
External funders:FORMAS
Deposited By: Malin Hultberg
Deposited On:22 Jun 2011 06:44
Metadata Last Modified:16 Oct 2015 04:00

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