Evaluation of the leaf juice of some higher plants for their toxicity against soil borne pathogens

Kumar, Abhishek; Tripathi, S. C.

doi:10.1007/bf00010412

Cited by 18 publications

(8 citation statements)

References 11 publications

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“…This means that the individual components by themselves are not sufficiently effective. Similar results were also reported by many researchers indicating the efficacy of essential oils as antifungal inhibitors for a large number of soil-borne pathogens [44][45][46]. The mode by which microorganisms are inhibited by essential oils and their chemical compounds seems to involve different mechanisms.…”

Section: Field Experimentssupporting

confidence: 88%

Integration between Compost, Trichoderma harzianum and Essential Oils for Controlling Peanut Crown Rot under Field Conditions

Abdel-Kader

Abdel-Kareem

El-Mohamady

2013

Journal of Mycology

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The effect of T. harzianum and some essential oils alone or in combination with compost on the peanut crown rot disease under field conditions was evaluated. Under laboratory conditions, results indicated that all concentrations of essential oils significantly reduced the growth of A. niger. Complete reduction was obtained with thyme and lemongrass oils at 0.5%. All T. harzianum isolates significantly reduced the growth of A. niger. The highest reduction was obtained with isolate no. 1 which reduced the growth by 81.1%. Under field conditions, results indicated that all treatments significantly reduced the peanut crown rot disease. The highest reduction was obtained with combined treatments (compost + T. harzianum + thyme and compost + T. harzianum + lemongrass) which reduced the disease incidence at both pre- and post-emergence growth stages, respectively. Similar trend corresponding to the previous treatments significantly increased the peanut yield which calculated as an increase in yield more than 75.0 and 80.0 during two growing seasons, respectively. It could be suggested that combined treatment between biocompost and essential oils might be used commercially for controlling peanut crown rot disease under field conditions.

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Section: Field Experimentssupporting

confidence: 88%

Integration between Compost, Trichoderma harzianum and Essential Oils for Controlling Peanut Crown Rot under Field Conditions

Abdel-Kader

Abdel-Kareem

El-Mohamady

2013

Journal of Mycology

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“…We evaluated its antimicrobial potential, finding that the fraction of dichloromethane is more effective in inhibiting the growth of FoT (61.7%) in comparison with the aqueous extract of C. medicagenina (33%) and the methanolic extract of C. filipes (55%). However, it was less efficient than the isolated peptide of C. pallida (70%) [1,12,22]. Further, the aqueous fraction showed low inhibition values (2.5%) against F. solani, while the 2-propanone fraction (35%) revealed activity for the aqueous extract of C. juncea [23].…”

Section: Discussionmentioning

confidence: 99%

Alternative Use of Extracts of Chipilín Leaves (Crotalaria longirostrata Hook. & Arn) as Antimicrobial

et al. 2018

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Abstract:The genus Crotalaria comprises about 600 species that are distributed throughout the tropics and subtropical regions of the world; they are antagonistic to nematodes in sustainable crop production systems, and have also shown antimicrobial capacity. Chipilín (C. longirostrata), which belongs to this genus, is a wild plant that grows in the state of Chiapas (Mexico) and is traditionally is used as food. Its leaves also have medicinal properties and are used as hypnotics and narcotics; however, the plant has received little research attention to date. In the experimental part of this study, dried leaves were macerated by ethanol. The extract obtained was fractionated with ethyl ether, dichloromethane, ethyl acetate, 2-propanone, and water. The extracts were evaluated against three bacteria-namely, Escherichia coli (Ec), Citrobacter freundii (Cf), and Staphylococcus epidermidis (Se)-and three fungi-Fusarium oxysporum A. comiteca (FoC), Fusarium oxysporum A. tequilana (FoT), and Fusarium solani A. comiteca (FSC). During this preliminary study, a statistical analysis of the data showed that there is a significant difference between the control ciprofloxacin (antibacterial), the antifungal activity experiments (water was used as a negative control), and the fractions used. The aqueous fraction (WF) was the most active against FoC, FsC, and FoT (30.65, 20.61,and 27.36% at 96 h, respectively) and the ethyl ether fraction (EEF) was the most active against Se (26.62% at 48 h).

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“…In recent years, plant extracts have been specially reported to have antimicrobial activity against a wide range of fungi (Doubrava et al, 1998;Kumar and Tripathi, 1991;Kyu Kyu Win et al, 2007). Our results showed that preharvest application of PBE was effective for inhibiting pathogen growth as well as inducing disease resistance in peach fruit, thereby controlling the disease and maintaining fruit quality.…”

Section: Discussionmentioning

confidence: 99%

Preharvest Application of Phellodendron Bark Extracts Controls Brown Rot and Maintains Quality of Peento-shaped Peach

Feng¹,

Wang²,

Li³

et al. 2008

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Preharvest application of Phellodendron bark (Phellodendron chinese Schneid) extract (PBE) on brown rot and postharvest quality of peach [Prunus persica (L.) Batsch var. platycarpa (Decne.) L.H. Bailey] was investigated. PBE at 0.8, 1.6, and 3.2 mg·mL−1 totally inhibited conidial germination, mycelial growth, and sporulation, respectively, of Monilinia fructicola in vitro. Preharvest PBE treatment at 21.0 mg·mL−1 at 0, 30, 60, and 90 days after full bloom controlled brown rot caused by M. fructicola on peach fruit after harvest and reduced disease incidence and lesion diameter by 37% and 61%, respectively, than those of the control 96 h after inoculation in in vivo experiments. The results from field experiments were consistent during a 3-year period. Fruit from PBE-treated trees showed higher activities of defense enzymes, including peroxidase, phenylalanine ammonia-lyase, chitinase, and β-1,3-glucanase, compared with those of the control during storage. PBE also delayed softening and loss of titratable acidity and inhibited flesh browning during storage. Total soluble solid contents were unaffected by treatment. The results indicate that preharvest application of PBE may be an alternative for controlling brown rot of peach fruit.

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Evaluation of the leaf juice of some higher plants for their toxicity against soil borne pathogens

Cited by 18 publications

References 11 publications

Integration between Compost, Trichoderma harzianum and Essential Oils for Controlling Peanut Crown Rot under Field Conditions

Integration between Compost, Trichoderma harzianum and Essential Oils for Controlling Peanut Crown Rot under Field Conditions

Alternative Use of Extracts of Chipilín Leaves (Crotalaria longirostrata Hook. & Arn) as Antimicrobial

Preharvest Application of Phellodendron Bark Extracts Controls Brown Rot and Maintains Quality of Peento-shaped Peach

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