In Vitro Effectiveness of Silver Nanoparticles against Root-Knot Nematode (Meloidogyne incognita)

Nazir, Khansa; Mukhtar, Tariq; Javed, Humayun

doi:10.17582/journal.pjz/2019.51.6.2077.2083

Cited by 26 publications

(15 citation statements)

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“…It is cultivated on large scale; however, its production is seriously threatened by mosaic viruses and root-knot nematodes (Ashfaq et al 2017;Ahsan et al 2020). Root-knot nematodes (RKN) have extensive host range and infest various seasonal and perennials (Mukhtar and Kayani 2019;Nazir et al 2019). Approximately 90% of the horticultural crops-producing areas are infested with RKN (Trudgill et al 2000;Tariq-Khan et al 2017a;Mukhtar and Kayani 2020).…”

Section: Introductionmentioning

confidence: 99%

Categorization of Available Cucumber Genotypes against Zucchini Yellow Mosaic Virus and Root-Knot Nematode (Meloidogyne incognita)

Ahmed¹

2021

IJAB

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In the present study, fifteen cucumber genotypes were screened against Zucchini yellow mosaic virus (ZYMV) and root-knot nematode (Meloidogyne incognita) individually and in combinations. All the cucumber genotypes behaved differently regarding root and shoot lengths and weights, number of galls, eggmasses and ZYMV infection when inoculated with M. incognita and ZYMV alone and in combinations. None of the fifteen cucumber genotypes was found immune, highly or moderately resistant to M. incognita. Two genotypes viz., Alpha Prime and Patio were found resistant to the nematode. Contrarily, Max Pack and Beti-alpha were highly susceptible as evident by maximum galls on their roots and reductions in growth variables. Similarly, the genotypes Best PIC, Songrooh, Northern Pack, C-7 and C-5 appeared as moderately susceptible whereas Shaheen, Jakson, C-1, C-2, C-3 and C-9 genotypes showed susceptible reactions to the nematode alone. Similar trend was noticed when the genotypes were inoculated with both the nematode and the virus. Similarly, on the basis of disease rating scale, two genotypes viz., Alpha Prime and Patio were grouped as moderately resistant to ZYMV. On the other hand, eleven genotypes viz., Max Pack, Shaheen, Songrooh, Northern Pack, Jakson, Beti-alpha, C-1, C-2, C-3, C-5 and C-9 were catalogued as highly resistant while two genotypes Best PIC and C-7 were categorized as susceptible against ZYMV alone. Similarly, all the genotypes behaved in the same way when inoculated with M. incognita. Two genotypes Alpha Prime and Patio were found resistant against both the pathogens inoculated simultaneously and hence are recommended for cultivation. © 2021 Friends Science Publishers

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Section: Introductionmentioning

confidence: 99%

Categorization of Available Cucumber Genotypes against Zucchini Yellow Mosaic Virus and Root-Knot Nematode (Meloidogyne incognita)

Ahmed¹

2021

IJAB

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“…On the other hand, entomopathogenic fungi and nematodes can reduce the incidence and severity of root-knot nematodes (Javed et al 2019 a, b;Rahoo et al 2019 a, b). Root-knot nematodes have also been found associated with fungal and bacterial pathogens resulting in disease complexes and aggravate the severity of the latter (Mukhtar and Kayani 2019;Nazir et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the damaging effects of Meloidogyne incognita on a resistant and susceptible cultivar of cucumber

Mukhtar

Kayani²

2020

Bragantia

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In the present study, the damaging effects of six inoculum densities of Meloidogyne incognita were compared on a resistant (Long Green) and a highly susceptible (Mirage) cultivar of cucumber. All the inoculum densities of M. incognita resulted in significant reductions in growth and yield variables of both the cultivars over their controls. The reductions in resistant cultivar were significantly lower as compared to the highly susceptible cultivar at all inoculum levels. The highest inoculum level caused the maximum reductions in growth and yield variables while the lowest inoculum level resulted in the minimum reductions. The reductions in growth and yield variables increased with an increase in the inoculum density showing a positive relationship. On the other hand, the inoculum levels caused an increase in root weight. The higher inoculum levels caused higher increases while at lower inoculum levels, the increases were lower. The increases in root weights were significantly lower in the resistant cultivar when compared to the highly susceptible one showing a direct relationship between the increase in root weight and inoculum levels. Similarly, significant differences in number of galls and egg masses were noticed between the resistant and highly susceptible cultivar at all inoculum levels. The galls produced on highly susceptible cultivar were significantly higher as compared to the resistant one. A direct relationship was observed between inoculum levels and number of galls and egg masses. On the other hand, all the inoculum levels varied significantly regarding reproductive factor on the resistant and highly susceptible cultivars.

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“…Among different biological methods, many antagonistic bacteria and fungi are being investigated and have been proved to become a potential biocontrol agent for the control of soil borne root pathogenic nematodes (Khan et al, 2008). Successful management of root-knot nematodes requires the combined effects of different strategies; thus, biological control agents are more likely to be successful when they are used in conjugation with crops that are less favorable hosts to root-knot nematodes and with other physical or cultural control practices such as solarization, fallowing and even nematicides (Bhuiyan et al, 2018;d'Errico et al, 2019;Nazir et al, 2019). One of the good attributes of Pasteuria penetrans is its compatibility with other management practices used for suppressing root-knot nematodes (Dube and Smart Jr, 1987;Eddaoudi and Bourijate, 1998;Tzortzakakis and Gowen, 1994;Walker and Wachtel, 1988).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Efficacy of Pasteuria Penetrans Alone and in Combination With Verticillium Chlamydosporium Against Meloidogyne Javanica

2020

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The potential control of Meloidogyne javanica using Pasteuria penetrans (Pp) alone and in combination with Verticillium chlamydosporium (Vc) was tested in earthen pots following a cropping sequence "tomato-tomato-tomato” over three crop cycles. After the final harvesting, analysis of variance showed significant effect of treatments (P0.01) regarding number of eggmasses, galls and nematode female populations. Similarly, significant effect of treatments (P0.01) was also recorded in case of infected nematode females with Pasteuria and number of eggs/eggmass while no significant effect (P 0.0 5) was observed in case of endospore production. Higher numbers of eggmasses (360) and root galling (6.2) was observed where biocontrol agents were absent (control). The treatments showed 46.58, 58.85 and 33.13 percent reduction in number of galls, eggmasses and nematodes in Pp alone and 43.34, 55.21 and 30.09 percent reductions in Vc+Pp treatments respectively. Numbers of females infected with the endospores of P. penetrans were recorded higher in Pp-3 alone treatment (13.2) followed by Vc+Pp combined treatment (13.0) and maize rotated treatment (10.4) respectively. Significantly lesser number of eggmasses, galls and nematodes were recorded in pots where tomato was rotated with maize (treatment 3) compared with control. Thus rotation prevented the buildup of nematode population and resulted in a 72% decrease in numbers of eggmasses, 38% in root galling and 46% regarding female populations over the control after the final harvest. Maximum colony forming units of V. chlamydosporium per gram of soil were recorded after its addition to the soil. The fungus established in the soil during the first crop and soil colonization of the fungus was also observed after final crop.

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In Vitro Effectiveness of Silver Nanoparticles against Root-Knot Nematode (Meloidogyne incognita)

Cited by 26 publications

References 0 publications

Categorization of Available Cucumber Genotypes against Zucchini Yellow Mosaic Virus and Root-Knot Nematode (Meloidogyne incognita)

Categorization of Available Cucumber Genotypes against Zucchini Yellow Mosaic Virus and Root-Knot Nematode (Meloidogyne incognita)

Comparison of the damaging effects of Meloidogyne incognita on a resistant and susceptible cultivar of cucumber

Evaluation of Efficacy of Pasteuria Penetrans Alone and in Combination With Verticillium Chlamydosporium Against Meloidogyne Javanica

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