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. 2018 Dec;12(8):1084-1089.
doi: 10.1049/iet-nbt.2018.5086.

Biogenically engineered nanoparticles inhibit Fusarium oxysporum causing soft-rot of ginger

Vaibhavi Athawale  1 , Priti Paralikar  1 , Avinash P Ingle  2 , Mahendra Rai  3
Affiliations

Biogenically engineered nanoparticles inhibit Fusarium oxysporum causing soft-rot of ginger

Vaibhavi Athawale et al. IET Nanobiotechnol. 2018 Dec.

Abstract

Soft-rot of ginger (Zingiber officinale) is the most important disease usually caused by Fusarium oxysporum (F. oxysporum) leading to significant yield loss. In this study, chitosan, copper and sulphur nanoparticles synthesised from leaf extract of selected plants were screened against two isolates of F. oxysporum recovered from the infected rhizome of ginger and soil samples. Moreover, among these, sulphur nanoparticles showed maximum inhibition of F. oxysporum isolated from soil samples (ZOI = 12.33 mm) followed by copper (ZOI = >12 mm) and chitosan nanoparticles (ZOI = >9 mm). Similarly, in the case of F. oxysporum isolated from infected ginger, sulphur nanoparticles showed maximum inhibition (ZOI = 13.33) as compared to copper (ZOI = >11 mm) and chitosan nanoparticles (ZOI = >9 mm). Considering the high efficacy, sulphur nanoparticles were further evaluated in combination with commercial fungicides, viz., bavistin, ridomil gold, sunflex and streptocycline. The combination of sulphur nanoparticles with bavistin demonstrated maximum inhibition (ZOI = 45.16 mm, MIC -20 µg/ml), whereas the minimum inhibition was shown by its combination with ridomil gold (ZOI = 10.5 mm, MIC -40 µg/ml). Therefore, it can be concluded that the combination of sulphur nanoparticles with bavistin can be used for effective and eco-friendly management of F. oxysporum causing soft-rot of ginger.

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Figures

Fig. 1
Fig. 1
Isolation of Fusarium sp. from infected rhizome of ginger (a) Infected ginger, (b) Dorsal view, (c) Ventral view, (d) Microconidia, (e) Macroconidia
Fig. 2
Fig. 2
Isolation of Fusarium sp. from an infected soil sample (a) Soil of ginger grown field, (b) Dorsal view, (c) Ventral view, (d) Microconidia, (e) Macroconidia
Fig. 3
Fig. 3
Nanoparticles tracking analysis of (a) Chitosan nanoparticles, (b) Copper nanoparticles and, (c) Sulphur nanoparticles
Fig. 4
Fig. 4
Zeta potential analysis (a) Chitosan nanoparticles, (b) Copper nanoparticles and, (c) Sulphur nanoparticles
Fig. 5
Fig. 5
XRD analysis of (a) Copper nanoparticles, (b) Sulphur nanoparticles
Fig. 6
Fig. 6
TEM analysis of (a) Chitosan nanoparticles, (b) Copper nanoparticles and, (c) Sulphur nanoparticles
Fig. 7
Fig. 7
Antifungal activity of sulphur nanoparticles in combination with commercially available fungicides against F. oxysporum isolated from the infected ginger
Fig. 8
Fig. 8
Antifungal activity of sulphur nanoparticles in combination with commercially available fungicides against F. oxysporum isolated from the soil samples
See this image and copyright information in PMC

References

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