Assessment of nematicidal properties and phytochemical screening of neem seed formulations using Radopholus similis, parasitic nematode of plantain in Cameroon

Kosma, Philippe; Ambang, Zachée; Begoude, B.A.D.; Hoopen, G. Martijn ten; Kuaté, Jean; Akoa, Amougou

doi:10.1016/j.cropro.2011.02.026

Cited by 34 publications

(17 citation statements)

References 20 publications

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“…The results of the screening carried out showed the presence of several families of compounds that are natural bioactive substances such as essential oils, coumarins, sterols, saponins, sugars, terpenes and flavonoids. Several of these compounds have also been obtained by [23] and [24] on T. peruviana and Azadirachta indica respectively. Overall, the results of this work show that the various extracts tested (organic and aqueous) significantly reduced the radial growth of the R. lignosus strain with a 100% inhibition percentage obtained with the C6 (100 mg/ml) concentrations of EAq and C5 (50 mg/ml) concentrations of EM, thus demonstrating the strong antifungal properties of these natural substances.…”

Section: Discussionmentioning

confidence: 95%

In vitro Evaluation of the Fungicidal Potential of Aqueous and Methanolic Extracts of Thevetia peruviana on the Development of Rigidoporus lignosus, Causal Agent of White Root rot of Hevea brasiliensis

Mboussi

Heu²,

Nsangou

et al. 2021

BJI

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Aims: The objective of this work is to evaluate the effect of (aqueous (EAq) and methanolic (ME)) extracts of Thevetia peruviana on the in vitro development of Rigidoporus lignosus. Study Design: A synthetic fungicide (Onazol 100), two extracts at differents concentrations: C1 = 3.5 mg / ml; C2 = 7 mg / ml; C3 = 15 mg / ml; C4 = 30 mg / ml; C5 = 50 mg / ml and C6 = 100 mg / ml for EAq; C1 = 3.5 ml/ml; C2 = 7 ml/ml; C3 = 15 ml/ml; C4 = 30 ml/ml; C5 = 50 ml/ml for ME and a negative control (T = 0 mg / ml) were used. Place and Duration of Study: The study was conducted in pathology laboratory at University of Yaounde I and IRAD of Nkolbisson in 2018. Methodology: Daily measurements of the pathogen's development was used to evaluate the average growth (D) of the mycelium. The inhibition percentages of the different doses of EAq, ME and ONAZOL 100 were calculated after 4 to 5 days of growth of the fungus. Results: The major result obtained compared to the rate of rot showed that the treatments EAq, ME (C6) and ONAZOL 100 were closed. The disease rates at different concentrations of C1 to C6 were 13.91 to 100% for ME, 9.34 to 100% for EAq, and 100% for ONAZOL 100. Conclusion: The two extracts are promising, and on small and medium scale, could be an effective and cheap formulation for the control of Rigidoporus lignosus.

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Section: Discussionmentioning

confidence: 95%

In vitro Evaluation of the Fungicidal Potential of Aqueous and Methanolic Extracts of Thevetia peruviana on the Development of Rigidoporus lignosus, Causal Agent of White Root rot of Hevea brasiliensis

Mboussi

Heu²,

Nsangou

et al. 2021

BJI

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“…Neem (A. indica A. Juss) kernels contain limonoids that include azadirachtin A, azadirachtin D, azadiradione, nimbin, nimbolite, salannin, meliantriol, and marangin have been reported to have nematicidal effect (Kosma et al 2011). Metabolites such as ammonia, nitrites, hydrogen sulfide, and organic acids produced by microbes during decomposition of the neem plant can also be detrimental to plant parasitic nematodes (Musabyimana & Saxena 1999).…”

Section: Resultsmentioning

confidence: 98%

Utilization of plant materials for control of soybean cysts nematode

Auwal

Wang

et al. 2014

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

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Field experiments were conducted in 2011 and repeated in 2012 to study the nematicidal potentials of acacia, brassica, neem, and seaweed as alternatives to chemical nematicide on population management of Heterodera glycines and growth and yield of soybean. Results obtained showed acacia at 200 g, neem at 450 g, brassica at 1000 g, and seaweed at 2000 g caused the maximum suppression of population of H. glycines and produced the highest yield and growth of soybean. Neem, brassica, acacia, and seaweed caused reduction in H. glycines population by 48.3%, 41.4%, 34.5%, and 28.3%, respectively. Also, neem, brassica, acacia, and seaweed produced increase in soybean pods number by 58.7%, 33.7%, 28%, and seaweed 37.9%, respectively. The results obtained showed the potentialities of these plant materials as alternative to synthetic chemical pesticides. The plant could be utilized in a sustainable farming system to save the environment, conserve the biodiversity, and protect man against harmful effects of chemical nematicides.

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“…Olabiyi et al (2008) showed that substances present in the roots of Hyptis suaveolens and Ocimum gratissimum and in the leaves of Tagetes erecta have saponins and flavonoids that reduce M. incognita populations in tomato plants. Kosma et al (2011) also showed that neem (Azadirachta indica) seed extracts have nematicidal effects against R. similis and reported the presence of saponins.…”

Section: In Vitro Tests With Fresh and Fermented Sisal Liquid Residuementioning

confidence: 99%

“…These results demonstrate the efficient inhibition of nematode parasitic action on banana roots. These root lesions are formed as a result of cavities and tunnels created by the nematode feeding habits in the root cytoplasm and cortical cells, causing cell wall collapse and affecting the plant's water and nutrient uptake and possibly leading to the toppling of flowering plants (Kosma et al 2011).…”

Section: In Vitro Tests With Fresh and Fermented Sisal Liquid Residuementioning

confidence: 99%

Control of the banana burrowing nematode using sisal extract

Jesus

Damasceno

Barbosa

et al. 2014

Agron. Sustain. Dev.

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The nematode Radopholus similis is a major pest in banana plantations worldwide. This nematode is actually controlled using synthetic, toxic nematicides. Alternative control methods are therefore needed. For instance the liquid byproduct of fiber extraction from sisal (Agave sisalana) may be used as a nematicide. Here we tested the nematicidal activity of the sisal residue, fresh or fermented, on R. similis in banana plants. We measured immobility and mortality effects by nematode immersion in an aqueous solution of sisal residue for 24 and 48 h. Nematode control was also evaluated in the Grand Naine banana plants under greenhouse conditions using soil amendments of residues. We measured plant growth, pseudostem diameter, the number of leaves, and the dry weight of the aerial parts, corm and roots, as well as factors related to nematode control such as the level of damage, the population of R. similis in roots and soil, and nematode reproduction factors. Our results show that the sisal residue efficiently controlled R. similis in vitro, displaying mortality rates of 99.2 % for the fresh residue. The damage caused by R. similis on plants was similar for the treatment with the sisal residue at a concentration of 25 % and with the nematicide. This is the first report on the nematicidal effect of the sisal liquid residue on the banana burrowing nematode. This byproduct presents the potential for the development of new alternatives for nematode control, with a low-cost and lowenvironmental risk plant nematicide.

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Assessment of nematicidal properties and phytochemical screening of neem seed formulations using Radopholus similis, parasitic nematode of plantain in Cameroon

Cited by 34 publications

References 20 publications

In vitro Evaluation of the Fungicidal Potential of Aqueous and Methanolic Extracts of Thevetia peruviana on the Development of Rigidoporus lignosus, Causal Agent of White Root rot of Hevea brasiliensis

In vitro Evaluation of the Fungicidal Potential of Aqueous and Methanolic Extracts of Thevetia peruviana on the Development of Rigidoporus lignosus, Causal Agent of White Root rot of Hevea brasiliensis

Utilization of plant materials for control of soybean cysts nematode

Control of the banana burrowing nematode using sisal extract

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