Control of Plant Pathogenic Fungi with Bacterial Endophytes

In vitro Antimicrobial Assay of Actinomycetes in Rice AgainstXanthomonas oryzae pv. oryzicola and as Potential Plant Growth Promoter

“…Data from this study proved that the highest antiXoc pathogen activities not only displayed antagonistic activity characteristics but also tested positive for plant growth activity and hydrolytic enzyme production. The potential for development of actinomycetes as a biocontrol agent was primarily indicated by the antagonistic activities mechanism, which could act: a) directly via an antibiosis or lysis mechanism, or b) indirectly by inducing plant defences and growth promoter substances (Berg and Hallmann 2006). The antibiosis mechanism is facilitated by antibiotic compounds, and the lysis mechanisms are facilitated by amylase, protease, chitinase, cellulase and lipase enzymes produced by the actinomycetes.…”

“…Within the same context of safe food and environment obligation as well as cost wise, the use of plant growth-promoting agent to improve plant growth is an alternative for reducing chemical inputs in agriculture (Saharan and Nehra 2011). Potential of actinomycetes to be developed as biocontrol agent is mainly indicated by antibiosis, lysis mechanism, plant systemic resistance stimulation and plant growth promoter substances (Berg and Hallmann 2006). Biocontrol agent, which may function as plant growth-promoting agent at the same time stimulate plant growth directly by altering plant hormone levels, facilitating iron acquisition via siderophore production, fixing atmospheric nitrogen and solubilising minerals for plant uptake (Lugtenberg and Kamilova 2009).…”

Vanilla Rhizobacteria as Antagonists against Fusarium oxysporum f. sp. vanillae

“…Some species of Staphylococcus possess antagonistic activities, such as S. epidermidis 2P3-18 isolated from the potato phyllosphere which presents some inhibition against V. dahliae and R. solani Kai et al, 2007). S. xylosus BAC-JAG15 requires more evaluation, since even some strains of this species, as well as those of Pseudomonas, Enterobacter, Azotobacter and Azospirillum produce growth regulators such as ethylene, auxins and cytokinins, which can promote plant growth and induce systemic resistance against pathogens (Arshad and Frankenberger, 1991;Leifert et al, 1994;Berg and Hallmann, 2006;Bhai and Kumar, 2008).…”

Purification and Structural Analysis of Surfactin Produced by Endophytic Bacillus subtilis EBS05 and its Antagonistic Activity Against Rhizoctonia cerealis

“…In addition, they produce a range of natural products that could be harnessed for potential use in medicine, agriculture or industry (Ryan et al, 2008). Specifically, bacterial endophytes colonize an ecological niche similar to that of phytopathogens, which makes them suitable as biocontrol agents (Berg et al, 2006). The bacteria strain EBS05, isolated as an endophyte from C. camphora, was identified as B. subtilis by morphological taxonomy and sequence analysis of 16S rRNA (GenBank accession no.…”