Systemic and persistent effect of neem (Azadirachta indica) formulations against root-knot nematodes, Meloidogyne javanica and their storage life

Javed, Nazir; Gowen, S. R.; Inam-ul-Haq, M.; Kadri, Abdullah; Shahina, F.

doi:10.1016/j.cropro.2006.08.011

Cited by 91 publications

(42 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, it has become an important issue to find alternative control strategies, which are as effective as synthetic pesticides, safer to farmers, consumers, and the environment and relatively easily available at low price [10]. One of possible alternatives is the utilization of pesticides from plant origin, known as botanical pesticides [11]. These pesticides are generally considered to be non-persistent under field conditions as they are readily transformed by light, oxygen and microorganisms into less toxic products.…”

Section: Introductionmentioning

confidence: 99%

Nematicidal Activity of Plant Extracts Against the Root-Knot Nematode, Meloidogyne incognita

Wiratno¹,

Taniwiryono²,

Berg³

et al. 2009

TONPJ

View full text Add to dashboard Cite

Nematicidal activity of extracts from plants was assayed against Meloidogyne incognita. In laboratory assays extracts from tobacco (Nicotiana tabacum L), clove (Syzygium aromaticum L), betelvine (Piper betle L), and sweet flag (Acorus calamus L) were most effective in killing the nematode, with an EC 50 that was 5-10 times lower than the EC 50 of the synthetic pesticides chlorpyrifos, carbosulfan and deltamethrin. The shapes of the dead nematodes differed in a characteristic way, and groups of pesticides and plant extracts could clearly be distinguished based on this phenomenon, which may be an indicator for the modes of action of the tested pesticides. In a greenhouse bioassay clove bud and betelvine were tested as mulch. Experiments revealed that the total number of live nematodes on roots of pepper plants treated with mulch of the clove bud was 7% of that of the controls and did not differ significantly from that of plants treated with the recommended synthetic pesticide carbofuran. The application of clove buds as a botanical pesticide for future use against nematodes is highly promising since clove is the 6 th major plant grown on Bangka Island, and the market value of clove has decreased sharply over the last years.

show abstract

Section: Introductionmentioning

confidence: 99%

Nematicidal Activity of Plant Extracts Against the Root-Knot Nematode, Meloidogyne incognita

Wiratno¹,

Taniwiryono²,

Berg³

et al. 2009

TONPJ

View full text Add to dashboard Cite

show abstract

“…These authors, applied aqueous extracts of 20 plant species on M. javanica in tomato plants and observed that mint extracts (Mentha spicata), Articum lappa, and castor bean (Ricinus communis) can reduce the number of galls about 75.6%, 65.7% and 54.4%, and the number of eggs in 81.7%, 75.9% and 56.6%, respectively. Aqueous extracts of Azadirachta indica and A. Juss, in doses of 1.5% and 3.0%% applied on the soil reduced the number of galls and eggs of M. javanica (Javed et al, 2008). The promising results showing the efficiency of different extract types over various nematode species strengthens the need for expansion of investigation on the use of extracts as a management alternative.…”

Section: Figmentioning

confidence: 89%

“…A few researches on different plants have already been done, demonstrating nematicide potential of plant extracts. For example, Chenopodium ambrosioides L. (Mashela and Nthangeni, 2002); castor bean (Ricinus communis L.) (Mello et al, 2006), and Azadirachta indica A. Juss (Javed et al, 2008) can produce such as toxic substances. Besides, another plant species exist in the entire northeast region, the Anadenanthera macrocarpa, might present nematicide and/or nematostatic potential due to its efficiency in pest control in agronomic crops (Moura et al, 2012) and veterinary, as in ticks Rhipicephalus (Boophilus) microplusem bovinos (Silva Filho et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Bioactivity of aqueous extracts of Anadenanthera macrocarpa to Meloidogyne incognita in cotton crop

Fonseca¹,

Almeida²,

Leite³

et al. 2017

Aust J Crop Sci

View full text Add to dashboard Cite

The black angico (Anadenanthera macrocarpa) contains some phenolic compounds, such as flavonoids and tannins, which are considered as secondary metabolites with antimicrobial properties and can be used in the nematodes management. The experimental design was completely randomized in a factorial (2 x 5) + 1 (leaf and bark x concentrations (20, 40, 60, 80 and 100 g L -1 ) + control water-only), with five replications. The cotton seedlings were inoculated with suspension of 4,400 juveniles and eggs of M. incognita. The extracts were applied on soil in a total of 100 mL per pot, in four installments of 25 mL each, in intervals of 15 days . After 60 days of the extracts application, agronomic parameters and parasitism characterist ics were evaluated. Plant height and fresh mass of aerial part presented considerable gain with application of leaf extracts. All extracts, regardless of concentration, showed independent suppressive effect to M. incognita. The black angico extracts presented potential capacity to control gall nematodes by the presence of metabolite compounds that affect the plants protection. These results reinforce the need of further studies regarding the isolation of chemical compounds with nematicide action.

show abstract

“…Root-knot nematodes (Meloidogyne spp.) are obligatory and substantial parasites of many economic crops (Javed et al 2006). Controlling root-knot nematodes is of major economic importance to the agricultural industry of China (Huang et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Novel point mutations in β-tubulin gene for carbendazim resistance maintaining nematode pathogenicity of Paecilomyces lilacinus

2015

View full text Add to dashboard Cite

The application of fungicides is so critical, especially in greenhouses, to avoid fungal infections. Carbendazim, an inhibitor of tubulin biosynthesis, is the most widely known broad-spectrum benzimidazole fungicide. The application of carbendazim affects other beneficial fungi as well. Paecilomyces lilacinus 36-1 (Pl36-1) is a beneficial fungus used for biological control, and the most effective biocontrol agents of nematode eggs. The Pl36-1 is sensitive to carbendazim (0.3 μg/ml). There is a general consensus that the mechanisms of resistance to carbendazim in the β-tubulin gene have been analyzed in detail. However, no studies were conducted on P. lilacinus strains. In the present study, two carbendazim-resistant mutants of Pl36-1, P50 and P100, were obtained from UV exposure and tested. The β-tubulin gene fragments were cloned and sequenced in the three strains, Pl36-1, P50 and P100. The resistance to carbendazim was developed when amino acid substitutions occurred at β-tubulin gene positions of S145A, T185A and F200Y. The β-tubulin gene was overexpressed in Pl36-1 strains. The β-tubulin expression level of the overexpressed mutant (PL3), quantified by qRT-PCR, was increased 4-folds over its normal level in Pl36-1. In vitro, the PL3 was resistant to carbendazim with maintaining growth, sporulation and pathogenicity rates. Three-year field trial demonstrated that P100 and PL3 strains exhibited carbendazim resistance combined with high nematode reduction and yield improvement.

show abstract

Systemic and persistent effect of neem (Azadirachta indica) formulations against root-knot nematodes, Meloidogyne javanica and their storage life

Cited by 91 publications

References 6 publications

Nematicidal Activity of Plant Extracts Against the Root-Knot Nematode, Meloidogyne incognita

Nematicidal Activity of Plant Extracts Against the Root-Knot Nematode, Meloidogyne incognita

Bioactivity of aqueous extracts of Anadenanthera macrocarpa to Meloidogyne incognita in cotton crop

Novel point mutations in β-tubulin gene for carbendazim resistance maintaining nematode pathogenicity of Paecilomyces lilacinus

Contact Info

Product

Resources

About