Fluorescent Pseudomonas spp. as biocontrol agents against forage legume root pathogenic fungi

Bagnasco, P.; Fuente, Leonardo De La; Gualtieri, G.; Noya, Francisco; Arias, A.

doi:10.1016/s0038-0717(98)00003-0

Cited by 77 publications

(27 citation statements)

References 21 publications

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“…1 filter paper cytolysis nor tail-end expansion was observed. This inhibitory phenomenon differed from those associated with the activity of chitinolytic enzymes Mahadevan and Crawford 1997;Gao et al 2008) and other non-enzymatic compounds (He et al 1994;Bagnasco et al 1998;Ciopraga et al 1999;Zhang et al 2008). Based on these observations, the antifungal activity of B. cereus AU004 may be associated with compounds that are not chitinases.…”

Section: Discussionmentioning

confidence: 68%

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Conversion of crude chitosan to an anti-fungal protease by Bacillus cereus

Chang

Hsieh

et al. 2008

World J Microbiol Biotechnol

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Bacillus cereus AU004, isolated from soil samples, secreted a complex of hydrolytic enzymes into the culture broth when it was grown aerobically in a medium containing crude chitosan flakes. The presence of the AU004 culture supernatant substantially influenced the growths of the plant-pathogenic fungi Fusarium oxysporum, F. solani and Pythium ultimum in terms of dry weight. AU004 excreted a protease when cultivated in a medium that contained 4% (w/v) chitosan as the major nutritional source. The protease was purified by sequential chromatography and characterized as a novel extracellularly neutral protease. The protease had an Mr of 28.8 kDa. The optimal pH and temperature for protease activity were 7 and 50A degrees C, respectively. Antifungal activity of the protease was observed using an assay based on the inhibition of spore germination and hyphal extension of the fungal Pythium ultimum. This investigation is the first report of the production of an anti-fungal protease from Bacillus spp

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Section: Discussionmentioning

confidence: 68%

“…One of the strategies involves the use of beneficial bacteria that are antagonistic to the harmful microorganisms (Lindow et al 1983;Lim et al 1991;Bagnasco et al 1998;Moenne-Loccoz et al 1998;Natsch et al 1998). Bacillus cereus UW85 accumulates two antibiotics, zwittermicin A and kanosamine, in its culture supernatant.…”

Section: Introductionmentioning

confidence: 99%

Conversion of crude chitosan to an anti-fungal protease by Bacillus cereus

Chang

Hsieh

et al. 2008

World J Microbiol Biotechnol

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“…Pseudomonas spp received great attention as biocontrol agent because of their catabolic versatility, excellent root-colonizing abilities and production of broad range antifungal (Raaijmaker et al, 2002) Moreover, they produce active extracellular compounds such as siderophores responsible for the biological suppression of several soil borne plant pathogens (Bagnasco et al, 1998). Some Pseudomonas spp.…”

Section: Introductionmentioning

confidence: 99%

Effect of Actinobacteria and Pseudomonas spp. against Sclerotium rolfsii in Groundnut

Roopa¹,

Krishnaraj²

2017

Int.J.Curr.Microbiol.App.Sci

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“…These include phytohormone production (Derylo and Skorupska 1993), stimulation of nutrient uptake (Lifshitz et al 1987) and biocontrol of deleterious soil bacteria and phytopathogenic fungi (Weller 1988). The antagonistic effects of these bacteria against fungal pathogens of plants may involve the production of siderophores (Leong 1986;Loper and Buyer 1991), antibiotics (Gurusiddaiah et al 1986;Homma et al 1989), hydrolytic enzymes, i.e., chitinases and b-1,3-glucanases (Fridlender et al 1993) and other secondary metabolites like hydrocyanic acid (HCN) (Bagnasco et al 1998) and induced systemic resistance (Liu et al 1995).…”

Section: Introductionmentioning

confidence: 99%

Disease suppression and crop improvement in moong beans (Vigna radiata) through Pseudomonas and Burkholderia strains isolated from semi arid region of Rajasthan, India

Minaxi

Saxena

2010

BioControl

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Pseudomonas fluorescens BAM-4, Burkholderia cepacia BAM-6 and B. cepacia BAM-12 isolated from the rhizosphere of moong bean (Vigna radiata L.) showed significant growth-inhibitory activity against a range of phytopathogenic fungi. Light and scanning electron microscopic (SEM) studies showed morphological abnormalities such as fragmentation, swelling, perforation and lysis of hyphae of pathogens by Pseudomonas and Burkholderia. Two of the strains (BAM-4 and BAM-6) produced siderophore in CAS agar plates, whereas all three strains produced chitinase. Bacterization of seeds of moong bean with pseudomonads has been reported as a potential method for enhancing plant growth and yield, and for providing protection against Macrophomina phaseolina. Seed bacterization with these plant growth-promoting rhizobacteria (PGPR) showed a significant increase in seed germination, shoot length, shoot fresh and dry weight, root length, root fresh and dry weight, leaf area and rhizosphere colonization. Yield parameters such as pods, number of seeds, and grain yield per plant also enhanced significantly in comparison to control. The disease suppression and plant growth enhancement along with the positive rhizosphere colonization by these strains indicate their possible use as PGPR/ biocontrol agents against charcoal rot.

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Fluorescent Pseudomonas spp. as biocontrol agents against forage legume root pathogenic fungi

Cited by 77 publications

References 21 publications

Conversion of crude chitosan to an anti-fungal protease by Bacillus cereus

Conversion of crude chitosan to an anti-fungal protease by Bacillus cereus

Effect of Actinobacteria and Pseudomonas spp. against Sclerotium rolfsii in Groundnut

Disease suppression and crop improvement in moong beans (Vigna radiata) through Pseudomonas and Burkholderia strains isolated from semi arid region of Rajasthan, India

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