Biological control of red rot in sugarcane by native pyoluteorin‐producing Pseudomonas putida strain NH‐50 under field conditions and its potential modes of action

Abstract

The pyoluteorin-producing bacteria P. putida strain NH-50 significantly reduced disease severity on both sugarcane varieties, irrespective of fungal inoculation, i.e. either inoculated through stem or through soil. This strain also possesses other plant growth characteristics and can be used as a biopesticide for sugarcane crop.

Synergistic effect of acetyl salicylic acid and DL-Beta-aminobutyric acid on biocontrol efficacy of Bacillus strains against tomato bacterial wilt

“…The conventional methods cannot effectively control this disease stimulating a search for more efficient strategies such as application of biological control agents and plant defense inducers (Adesemoye et al, 2009;Hassan et al, 2011).…”

Candidate nematicidal proteins in a new <i>Pseudomonas veronii</i> isolate identified by its antagonistic properties against <i>Xiphinema index</i>

“…The first difference between these strains arose from phlD gene amplification (Table 1); this gene is a marker for 2,4-DAPG producers (Keel et al, 1996). Regarding R4 selection, Hassan et al (2011) isolated and identified the P. putida NH-50 strain from sugar cane and demonstrated that, although the same primers we used in this work did not lead to positive amplification in that strain, the high efficiency obtained for red rot disease control, compared with the CHA0 strain, was due to pyoluteorin synthesis and HCN production. In addition, 2,4-DAPG non-producer mutants of CHA0 (i.e., DAPG-and CHA631) did not differ from the native strain with respect to inhibiting C. elegans individuals (Neidig et al, 2011) under in vitro conditions.…”

Endophytic bacteria from Piper tuberculatum Jacq.: isolation, molecular characterization, and in vitro screening for the control of Fusarium solani f. sp piperis, the causal agent of root rot disease in black pepper (Piper nigrum L.)

“…These results are in accordance with those obtained in other studies, including a recent report by Vanitha and Ramjegathesh (2014), in which the inhibitory activity of Pseudomonas strains isolated from coleus rhizosphere against the fungus Macrophomina phaseolina ranged from 30 to 60%. In addition, studies have reported the effective use of Pseudomonas bacteria, including P. putida strains, in the biological control of pathogens of several plants, such as cotton (Chen et al, 1995), black pepper (Tran et al, 2008), sugarcane (Hassan et al, 2011), and coleus (Vanitha and Ramjegathesh, 2014).…”

“…For example, studies have shown that the mechanisms of Pseudomonas bacterial action in the control of phytopathogens include production of biosurfactant compounds (Tran et al, 2008) and the antibiotic pyoluteorin (Hassan et al, 2011). Another mechanism by which Pseudomonas bacteria can protect plants against pathogens is via the ISR Verhagen et al, 2010), where plants inoculated with endophytic bacteria, followed by contact with pathogens, showed enhanced expression of genes involved in the ISR, indicating that these genes were primed to respond more intensely to pathogen attack.…”

“…Endophytic bacteria have been isolated from many plant species, such as citrus (Trivedi et al, 2011), coffee (Vega et al, 2005), ginseng , sugarcane (Hassan et al, 2011), coleus (Vanitha and Ramjegathesh, 2014), and black pepper (Benchimol et al, 2000).…”