The effects of neem [Azadirachta indica A. Juss (meliaceae)] oil on Fusarium oxysporum f. sp. medicagenis and Fusarium subglutinans and the production of fusaric acid toxin

Geraldo, Márcia Regina Ferreira; Arrotéia, Carla Cristina; Kemmelmeier, Carlos

doi:10.4236/abb.2010.11001

Cited by 7 publications

(3 citation statements)

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“…benincasae (Xie et al, 2011 ), F. oxysporum f. sp. medicagenis (Geraldo et al, 2010 ), F. oxysporum f. sp. gladioli (Nosir et al, 2011 ), F. oxysporum f. sp.…”

Section: Discussionmentioning

confidence: 99%

Physiological Response of Cape Gooseberry Plants to Fusarium oxysporum f. sp. physali, Fusaric Acid, and Water Deficit in a Hydrophonic System

et al. 2021

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Cape gooseberry production has been limited by vascular wilt caused by Fusarium oxysporum f. sp. physali (Foph). Fusaric acid (FA) is a mycotoxin produced by many Fusarium species such as F. oxysporum formae speciales. The effects of the interaction between this mycotoxin and plants (such as cape gooseberry) under biotic stress (water deficit, WD) have been little explored. Three experiments were carried out. The objectives of this study were to evaluate (i) different Foph inoculum densities (1 × 104 and 1 × 106 conidia ml−1; experiment (1); (ii) the effect of times of exposure (0, 6, 9, and 12 h) and FA concentrations (0, 12.5, 25, 50, and 100 mg L−1; experiment (2), and (iii) the interaction between Foph (1 × 104 conidia mL−1) or FA (25 mg L−1 × 9 h), and WD conditions (experiment 3) on the physiological (plant growth, leaf stomatal conductance (gs), and photochemical efficiency of PSII (Fv/Fm ratio) and biochemical [malondialdehyde (MDA) and proline] responses of cape gooseberry seedling ecotype Colombia. The first experiment showed that Foph inoculum density of 1 × 106 conidia ml−1 caused the highest incidence of the disease (100%). In the second experiment, gs (~40.6 mmol m−2 s−1) and Fv/Fm ratio (~0.59) decreased, whereas MDA (~9.8 μmol g−1 FW) increased in plants with exposure times of 9 and 12 h and an FA concentration of 100 mg L−1 compared with plants without FA exposure or concentrations (169.8 mmol m−2 s−1, 0.8, and 7.2 μmol g−1 FW for gs, Fv/Fm ratio and MDA, respectively). In the last experiment, the interaction between Foph or FA and WD promoted a higher area under the disease progress curve (AUDPC) (Foph × WD = 44.5 and FA × WD = 37) and lower gs (Foph × WD = 6.2 mmol m−2 s−1 and FA × WD = 9.5 mmol m−2 s−1) compared with plants without any interaction. This research could be considered as a new approach for the rapid scanning of responses to the effects of FA, Foph, and WD stress not only on cape gooseberry plants but also on other species from the Solanaceae family.

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“…benincasae (Xie et al, 2011 ), F. oxysporum f. sp. medicagenis (Geraldo et al, 2010 ), F. oxysporum f. sp. gladioli (Nosir et al, 2011 ), F. oxysporum f. sp.…”

Section: Discussionmentioning

confidence: 99%

Physiological Response of Cape Gooseberry Plants to Fusarium oxysporum f. sp. physali, Fusaric Acid, and Water Deficit in a Hydrophonic System

et al. 2021

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“…Many researchers focused on controlling of F. oxysporum mycotoxins [10,11,52]. Fusaric acid is probably one of the most widely distributed mycotoxins produced by strains in the genus Fusarium [53].…”

Section: In Vitro Antimycotic Activitymentioning

confidence: 99%

Eco-friendly and Safe Role of Juniperus procera in Controlling of Fungal Growth and Secondary Metabolites

Ghany¹

2014

J Plant Pathol Microbiol

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Radial growth Aspergillus flavus and Fusarium oxysporum was determined on medium amended with Juniperus procera methanolic extract. The radial growth of A. flavus and F. oxysporum was significantly reduced at 150 and 200 mg. The precentage of reduction was 16.55%, 48.54% and 48.64%, 59.86% for A. flavus and F. oxysporum, respectively. However, addition of J. procera extract to Carbomar significantly reduced radial growth compared with using Carbomar alone. On the other hand, with addition of the J. procera extract, the productivity percentage of aflatoxins B2, aflatoxins B1, sterigmatocystin, cyclopiazonic acid and fusaric acid was reduced by100, 67.44, 96.28, 60.33 and 8.36%, respectively as a result of applied J. procera extract. Moreover, the extract of J. procera significantly reduced the F. oxysporum colony-forming units (cfu) in the cultivated soil with Raphanus sativus at 5 days. F. oxysporum populations at 100 and 200 mg of J. procera extract were 25.33×103 and 21.33×103 cfu g-1, respectively. However, when added with Carbomar, extract of J. procera strongly reduced F. oxysporum populations (9.33×10 3 cfu g-1). In addition, the J. procera extract reduced the mean disease rating of wilt disease of R. sativus caused by F. oxysporum. Less content of chlorophyll a and b (3.56 and 1.65 mg/g fresh weight, respectively at P<0.01) was detected in infected R. sativus than treated with J. procera extract or Carbomar.

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“…Plant extracts and essential oils, as safer natural chemicals, 3 have long been known to have antimicrobial properties and used to control some plant diseases. 4,5,6,7 There are also some studies on their use against seed borne fungal diseases of some plant species. 8,9 In the current study, effect of clove, ginger, mint, oregano and thyme essential oils on the fungal load of wheat seeds was determined.…”

Section: Introductionmentioning

confidence: 99%

Effects of Some Plant Essential Oils against Fungi on Wheat Seeds

Karaca¹,

Bilginturan²,

Olgunsoy³

2017

IJPER

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Diseases, especially caused by seed borne fungi, are among the factors decreasing yield and quality of wheat. Common bunt is also an important seed borne disease of wheat worldwide. The objective of the study is to determine the effects of clove, ginger, mint, oregano and thyme oils on the fungal load of wheat seeds. In addition, effects of the oils on the germination rates of bunt spores were investigated. Blotter method was used to determine the effects of different concentrations (0.05 -10%) of the oils on fungal load of wheat seeds. After incubation at 22°C for 7 days, seeds were investigated under stereomicroscope and fungi growing on the seeds were recorded. Germination rates of bunt spores were determined after incubation on water agar with different concentrations of oils. Highest doses of clove, mint and oregano oils totally inhibited the fungal growth on wheat seeds, but they also inhibited the germination of seeds. Lower doses failed to inhibit fungi on seeds, however they decreased or totally inhibited the germination of bunt spores. As a result, it was found that plant essential oils could be used against bunt disease of wheat as an alternative to fungicides.

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The effects of neem [Azadirachta indica A. Juss (meliaceae)] oil on Fusarium oxysporum f. sp. medicagenis and Fusarium subglutinans and the production of fusaric acid toxin

Cited by 7 publications

References 37 publications

Physiological Response of Cape Gooseberry Plants to Fusarium oxysporum f. sp. physali, Fusaric Acid, and Water Deficit in a Hydrophonic System

Physiological Response of Cape Gooseberry Plants to Fusarium oxysporum f. sp. physali, Fusaric Acid, and Water Deficit in a Hydrophonic System

Eco-friendly and Safe Role of Juniperus procera in Controlling of Fungal Growth and Secondary Metabolites

Effects of Some Plant Essential Oils against Fungi on Wheat Seeds

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