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Biological control of fire blight of apple and pear with antagonistic Lactobacillus plantarum

Lactic acid bacteria (LAB) can be a source of biological control agents (BCA) of fire blight disease. Several species of LAB are inhabitants of plants and are currently used as biopreservatives of food because of their antagonistic properties against bacteria, and are considered as generally safe. Candidates to BCA were selected from a large collection of LAB strains obtained from plant environments. Strains were first chosen based on the consistency of the suppressive effect against E. amylovora infections in detached plant organs (flowers, fruits and leaves). Lactobacillus plantarum strains PC40, PM411, TC54 and TC92 were effective against E. amylovora in most of the experiments performed. Besides, strains PM411, TC54 and TC92 had strong antagonistic activity against E. amylovora and also other target bacteria, and presented genes involved in plantaricin biosynthesis (plnJ, plnK, plnL, plnR and plnEF). The strains efficiently colonized pear and apple flowers; they maintained stable populations for at least 1 week under high RH conditions, and survived at low RH conditions. They were effective in preventing fire blight on pear flowers, fruits and leaves, as well as in whole plants and in a semi-field blossom assay. The present study confirms the potential of certain strains of L. plantarum to be used as active ingredient of microbial biopesticides for fire blight control that could be eventually extended to other plant bacterial diseases

Funding was provided by Spain MINECO (AGL2009-13255-c02-01 and AGL-2012-39880-C02-01) and FEDER of the European Union. The research group is under accreditation by SGR 2009-0812 and TECNIO net from Catalonia

© European Journal of Plant Pathology, 2013, vol. 137, núm. 3, p. 621-633

Springer Verlag

Autor: Roselló Prados, Gemma
Bonaterra i Carreras, Anna
Francés Ortega, Jesús
Montesinos Barreda, Laura
Badosa Romañó, Esther
Montesinos Seguí, Emilio
Data: 1 novembre 2013
Resum: Lactic acid bacteria (LAB) can be a source of biological control agents (BCA) of fire blight disease. Several species of LAB are inhabitants of plants and are currently used as biopreservatives of food because of their antagonistic properties against bacteria, and are considered as generally safe. Candidates to BCA were selected from a large collection of LAB strains obtained from plant environments. Strains were first chosen based on the consistency of the suppressive effect against E. amylovora infections in detached plant organs (flowers, fruits and leaves). Lactobacillus plantarum strains PC40, PM411, TC54 and TC92 were effective against E. amylovora in most of the experiments performed. Besides, strains PM411, TC54 and TC92 had strong antagonistic activity against E. amylovora and also other target bacteria, and presented genes involved in plantaricin biosynthesis (plnJ, plnK, plnL, plnR and plnEF). The strains efficiently colonized pear and apple flowers; they maintained stable populations for at least 1 week under high RH conditions, and survived at low RH conditions. They were effective in preventing fire blight on pear flowers, fruits and leaves, as well as in whole plants and in a semi-field blossom assay. The present study confirms the potential of certain strains of L. plantarum to be used as active ingredient of microbial biopesticides for fire blight control that could be eventually extended to other plant bacterial diseases
Funding was provided by Spain MINECO (AGL2009-13255-c02-01 and AGL-2012-39880-C02-01) and FEDER of the European Union. The research group is under accreditation by SGR 2009-0812 and TECNIO net from Catalonia
Format: application/pdf
ISSN: 0929-1873 (versió paper)
1573-8469 (versió electrònica)
Accés al document: http://hdl.handle.net/10256/14102
Llenguatge: eng
Editor: Springer Verlag
Col·lecció: MICINN/PN 2010-2012/ AGL2009-13255-C02-01
MINECO/PE 2013-2015/AGL2012-39880-C02-01
Reproducció digital del document publicat a: http://dx.doi.org/10.1007/s10658-013-0275-7
Articles publicats (D-EQATA)
És part de: © European Journal of Plant Pathology, 2013, vol. 137, núm. 3, p. 621-633
Drets: Tots els drets reservats
Matèria: Bacteris de l’àcid làctic -- Control biològic
Lactic acid bacteria -- Control
Fruita -- Malalties i plagues
Fruit -- Diseases and pests
Fruita -- Malalties bacterianes
Fruit -- Bacterial diseases of plants
Títol: Biological control of fire blight of apple and pear with antagonistic Lactobacillus plantarum
Tipus: info:eu-repo/semantics/article
Repositori: DUGiDocs

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