Potential Pseudomonas Isolated from Soybean Rhizosphere as Biocontrol against Soilborne Phytopathogenic Fungi

Susilowati, Ari; Wahyudi, Aris Tri; Lestari, Yulin; Suwanto, Antonius; Wiyono, Suryo

doi:10.4308/hjb.18.2.51

Cited by 17 publications

(18 citation statements)

References 24 publications

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“…Fifteen, 13 and 7 isolates with antifungal activities produced chitinase, HCN, and both chitinase and HCN, respectively which could contribute to fungal inhibition. The PIRG values reported here are similar to those 30 to 40% reported for Baccilus (Wahyudi et al, 2011b) and 11 to 60% reported for Pseudomonas (Susilowati et al, 2011) isolated from soybean rhizosphere.…”

Section: Anti-fungal Activitysupporting

confidence: 91%

“…SR99B). The ratio of HCN evolving rhizobacteria found here is less than the 36% for Pseudomonas species isolated from soybean rhizosphere and reported by Susilowati et al (2011).…”

Section: Hcn Productioncontrasting

confidence: 74%

“…PGPR isolates have been applied exogenously as seed-borne inoculants to improve seed germination, seedling fitness and crop performance (Malviya and Singh, 2012) via a variety of mechanisms. The mechanisms include increasing the availability of nutrients such as: N via BNF (Park et al, 2005); phosphorus and zinc, via solubilisation of inorganic zinc phosphate (Sharma et al, 2012); iron chelation using siderophore (Susilowati et al, 2011); production or modulation of phytohormones (Masciarelli et al, 2014); and, disease resistance through induction of host induced systemic resistance (Glick, 2012), and production of anti-fungal enzymes and antibiotic compounds (Susilowati et al, 2011). Such traits may explain the potential of PGPR to suppress root-rot pathogens (Leon et al, 2009), viruses (Khalimi and Suprapta, 2011), pathogenic fungi (Wahyudi et al, 2011a;Wahyudi et al, 2011b) and parasitic nematodes (Kloepper et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

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The functional characterisation of soybean (Glycine max L.) rhizospheric bacteria indigenous to Ethiopian soils

Temesgen¹,

Maluk²,

James³

et al. 2019

Afr. J. Agric. Res.

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Ethiopia remains a net importer of soybean partly due to low average yields which may be improved by inoculation with rhizobia and/or plant growth promoting rhizobacteria (PGPR). The functional characterisation of 231 rhizobacteria isolated from the rhizosphere of soybean grown in 102 soils collected from different pedo-climatic regions of Ethiopia was carried out. Isolates were initially characterised by Gram staining and then functionally for: indole-3-acetic acid production; phosphate solubilisation; growth on a nitrogen-free medium; and, resistance to the pathogenic fungus Fusarium oxysporum. A subset of 72 of the best performing isolates were tested in vitro for: production of bioprotectants; polysaccharide degradation; and their relative capacity to maintain growth in response to extremes of: temperature; pH; salinity; antibiotics; pesticides; and, heavy metals. Twenty isolates with the best PGPR potential were identified via 16S rRNA gene sequencing. Seventeen isolates were Gram-negative: Pseudomonas (7); Stenotrophomonas (5); Acinetobacter (3); Enterobacter (1); and Achromobacter (1). Gram-positive types were: Bacillus (2); and, Microbacterium (1). Of the six of the most promising PGPR tested on soybean plants, Achromobacter and Acinetobacter significantly enhanced soybean seed germination, seedling growth and plant vigour index compared to noninoculated plants.

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Section: Anti-fungal Activitysupporting

confidence: 91%

“…SR99B). The ratio of HCN evolving rhizobacteria found here is less than the 36% for Pseudomonas species isolated from soybean rhizosphere and reported by Susilowati et al (2011).…”

Section: Hcn Productioncontrasting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The functional characterisation of soybean (Glycine max L.) rhizospheric bacteria indigenous to Ethiopian soils

Temesgen¹,

Maluk²,

James³

et al. 2019

Afr. J. Agric. Res.

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show abstract

“…Zhou et al (2012) reported the inhibition of phytopathogenic bacteria Ralstonia solanacearum by the antimicrobial compounds produced by Pseudomonas brassicacearum J12 including 2,4-diacetylphloroglucinol, hydrogen cyanide, siderophores and protease. Susilomati et al (2011) reported the screening of Pseudomonas sp. indigenous soybeans' rhizobacteria possessing biocontrol characters against soilborne mainly i.e.…”

Section: Antimicrobial Activity Of Mycolytic Enzymes and Secondary Acmentioning

confidence: 99%

Potential of bacterial derived biopesticides in pest management

2015

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“…These secondary metabolites have been involved in plant growth stimulation and disease control and their combination is essential for effectiveness of some strains against phytopathogens (Costa et al, 2009;Selin et al, 2010). Susilomati et al (2011) reported that screening of Pseudomonas sp. indigenous to rhizosphere of soybean showed biocontrol activity against soil-borne fungi, mainly F. oxysporum.…”

Section: Introductionmentioning

confidence: 99%

The effect of Pseudomonas chlororaphis subsp. aurantiaca strain Q16 able to inhibit Fusarium oxysporum growth on potato yield

Poštić¹,

Jošić²,

Lepsanovic³

et al. 2019

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This study assesses the potential of antibiotics-producing Pseudomonas chlororaphis strains to increase potato yield and to inhibit the mycelial growth of phytopathogenic fungi Fusarium oxysporum (Fo) isolated from potato. P. chlororaphis subsp. aurantiaca strain Q16 (PchlQ16) caused the highest growth inhibition (67.07%) of FoA2 isolate in vitro. In field trials the effect of PchlQ16 was measured as the number of stems, number and weight of tubers and a total potato yield of the Rudolph potato variety. Application of P. chlororaphis and the number of treatments exhibited a significant effect on the yield. Two treatments of PchlQ16 increased the total yield of tubers from 4.9% to 33.05%, while four treatments from 9.3% to 92.35%, compared to the control. Based on our field results we can recommend a frequent application of PchlQ16 (4 times) during potato growth season. The results of our in vitro experiment support these findings as the bacterial strain suppressed growth of F. oxysporum. In this investigation PchlQ16 was confirmed as an effective growth promoting agent in potato production and can be highly effective in prevention of F. oxysporum infection.

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Potential Pseudomonas Isolated from Soybean Rhizosphere as Biocontrol against Soilborne Phytopathogenic Fungi

Cited by 17 publications

References 24 publications

The functional characterisation of soybean (Glycine max L.) rhizospheric bacteria indigenous to Ethiopian soils

The functional characterisation of soybean (Glycine max L.) rhizospheric bacteria indigenous to Ethiopian soils

Potential of bacterial derived biopesticides in pest management

The effect of Pseudomonas chlororaphis subsp. aurantiaca strain Q16 able to inhibit Fusarium oxysporum growth on potato yield

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