NDLI: Efficacy of bacterial seed treatments for the control of Fusarium verticillioides in maize

Content Provider	Springer Nature Link
Author	Pereira, Paola Nesci, Andrea Etcheverry, Miriam Graciela
Copyright Year	2007
Abstract	Maize colonization by the phytopathogenic fungi Fusarium verticillioides leads to economical and food quality losses and also implicates potential health risks. In order to control this fungal species different strategies are being considered. In the present work we investigated the in situ effects of the use of two in vitro proven bacterial biological control agents against Fusarium verticillioides, using maize seedlings grown in greenhouse conditions. The treatment of maize seeds with Fusarium verticillioides 107 spores ml−1 negatively affected the length of the stem and the weight of the root systems of resultant seedlings, and also reduced the numbers of non-rhizospheric organisms with ammonification and nitrification activities. The addition of Bacillus amyloliquefaciens or Microbacterium oleovorans, at a concentration of 109 colony forming units ml−1, to the seeds significantly reduced Fusarium verticillioides count at the root inner tissues of resultant seedlings. When testing the impact of bacterial treatments on soil populations, no alterations with respect to control numbers of organisms with nitrification, ammonification or cellulolytic potentials were observed. Culturable bacterial richness and diversity calculated at the rhizoplane and root inner tissues of maize seedlings neither changed in bacterized treatments when compared to control treatment. Our study showed that the Fusarium verticillioides in vitro proven antagonists, Bacillus amyloliquefaciens and Microbacterium oleovorans (at 109 colony forming units ml−1), were also effective at greenhouse conditions without causing major changes in culturable rhizospheric and endophytic microbial richness and diversity.
Starting Page	103
Ending Page	111
Page Count	9
File Format	PDF
ISSN	13866141
Journal	BioControl
Volume Number	54
Issue Number	1
e-ISSN	15738248
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-12-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bacillus amyloliquefaciens Biological control Fusarium verticillioides Maize Microbacterium oleovorans Behavioural Sciences Animal Biochemistry Animal Ecology Agriculture Plant Pathology Entomology
Content Type	Text
Resource Type	Article
Subject	Insect Science Agronomy and Crop Science

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