Efeito fungistático de Bacillus thuringiensis e de outras bactérias sobre alguns fungos fitopatogênicos

Batista, C. B.; Albino, Ulisses Brigatto; Martines, Alexandre Martin; Saridakis, Dennis Panayotes; Matsumoto, Leopoldo Sussumu; Avanzi, M.; Andrade, Galdino

doi:10.1590/s0100-204x2002000800018

Cited by 8 publications

(1 citation statement)

References 7 publications

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“…The saprophytic fungi were inhibited by Cry + strain. This inhibitory effect was also observed by Batista Junior et al (2002), in vitro. In this case, this inhibitory effect should be related to products released by the bacteria, and not to the presence of the insecticide crystal.…”

supporting

confidence: 77%

Effect of Bacillus thuringiensis on microbial functional groups in sorghum rhizosphere

Brasil

Matsumoto

Nogueira

et al. 2006

Pesq. agropec. bras.

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-The objective of this work was to assess the effect of two strains of Bacillus thuringiensis var. kurstaki on sorghum rhizosphere microorganisms. The strains were HD1, that produces the bioinsecticidal protein, and 407, that is a mutant non-producer. The strains do not influence microbial population, but reduce plant growth and improve mycorrhizal colonization and free living fixing N 2 community.Index terms: bioinsecticide, sorgum, rhizosphere, biocontrol. Efeito do Bacillus thuringiensis sobre grupos funcionais de microrganismos na rizosfera de sorgoResumo -O objetivo deste trabalho foi avaliar o efeito de duas cepas de Bacillus thuringiensis var. kurstaki sobre microrganismos na rizosfera do sorgo. As cepas foram a HD1, produtora do cristal bioinseticida, e a 407, uma mutante não-produtora. As duas cepas não influenciam a comunidade microbiana, mas reduzem o crescimento da planta. A colonização micorrízica e a população de fixadores de N 2 de vida livre aumentaram.Termos para indexação: bioinseticida, sorgo, rizosfera, controle biológico.

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supporting

confidence: 77%

Effect of Bacillus thuringiensis on microbial functional groups in sorghum rhizosphere

Brasil

Matsumoto

Nogueira

et al. 2006

Pesq. agropec. bras.

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Postharvest harpin or Bacillus thuringiensis treatments suppress citrus black spot in ‘Valencia’ oranges

et al. 2010

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Rizobactérias promotoras de crescimento vegetal isoladas de cana-de-açúcar sob fertilização orgânica e/ou convencional.

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In this work we evaluated the possible effect of fertilization (organic and conventional) on the rhizobacteria physiology from the sugarcane. For that, we selected five rhizobacterial genera (Beijerinckia, Burkholderia, Enterobacter, Klebsiella and Pseudomonas) prevalent in sugarcane crops and described as plant growth promoters. The selected bacteria were isolated and identified by biochemical tests and by sequence analysis of the 16S rDNA gene, and the parameters investigated were: capacity of acetylene reduction, phytohormones production (IAA and ethylene), capacity of phosphate solubilization, amino acid release, and antifungal activity. The selected rhizobacteria showed their potential as plant growth promoters. The Burkholderia strains showed the better results in phosphate solubilization and antifungal activity. The Pseudomonas were prominent in the production of ethylene and Beijerinckia strains showed a greater N 2 fixation capacity. Enterobacter, Klebsiella and Pseudomonas strains were the better IAA producers. In vitro, the influence of the fertilization (treatment of the crop) was not detected, except for the inorganic phosphate solubilization. Our results showed that bacteria isolated from plants submitted to organic treatment, where phosphate was in excess, did not show potential for inorganic phosphate solubilization. However, in vivo it is possible that organic fertilization, together with the rhizosphere, improves and controls the growth promoting bacteria traits. Our results evidenced the great potential of these bacteria as natural tools for the culture sustainability, which it aims at to reduce costs, to promote efficiency and increase of the productivity.

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Efeito fungistático de Bacillus thuringiensis e de outras bactérias sobre alguns fungos fitopatogênicos

Cited by 8 publications

References 7 publications

Effect of Bacillus thuringiensis on microbial functional groups in sorghum rhizosphere

Effect of Bacillus thuringiensis on microbial functional groups in sorghum rhizosphere

Postharvest harpin or Bacillus thuringiensis treatments suppress citrus black spot in ‘Valencia’ oranges

Rizobactérias promotoras de crescimento vegetal isoladas de cana-de-açúcar sob fertilização orgânica e/ou convencional.

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