Use of extracts from Prosopis nigra in the control of Cercospora kikuchii and Septoria glycines

Sequin, Christian Javier; Sampietro, Diego Alejandro; Sgariglia, Melina Araceli; Soberón, José Rodolfo; Catalán, César A.N.; Aceñolaza, Pablo Gilberto

doi:10.1016/j.indcrop.2020.112979

Cited by 6 publications

(2 citation statements)

References 26 publications

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“…The fungicidal activity of eucalyptol against C. kikuchii, C. sojina, or S. rolfsii was evaluated using the disc diffusion method, as described by Quiroga et al (2009) and Sequín et al (2020), with some adaptations. Fungal hyphal suspensions were obtained by carefully collecting mycelium from 7-day-old colonies of C. kikuchii, C. sojina, or S. rolfsii grown on PDA.…”

Section: Fungicidal Activitymentioning

confidence: 99%

Eucalyptol (1, 8-cineole), a monoterpene oxide with potential for protecting soybean crops against insect pests and phytopathogenic fungi

Wagner,

Sequín,

Perusset

et al. 2024

Preprint

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Soybean (Glycine max), a pivotal global agricultural crop, faces significant economic losses from pests and phytopathogenic fungi. To address this, farmers often resort to synthetic pesticides, posing potential risks to health and the environment. In this context, eucalyptol stands out in agriculture for its toxicity to various insects and fungi, with minimal environmental and human health impacts. This study aimed to i) assess the insecticidal activity of eucalyptol against Spodoptera frugiperda JE Smith (Lepidoptera: Noctuidae) and Epicauta atomaria Germar (Coleoptera: Meloidae), and its fungicidal activity against Cercospora kikuchii, Cercospora sojina, and Sclerotium rolfsii; and ii) explore the potential phytotoxic effect of eucalyptol on non-target soybean plants. Eucalyptol demonstrated good fumigant insecticidal activity against S. frugiperda 1st instar larvae (LC50 = 26.9 µL/L air) and E. atomaria adults (LC50 = 34.6 µL/L air), along with moderate fungicidal activity against C. kikuchii and C. sojina (mycelial inhibition halo diameters of 6.0 ± 0.0 mm and 10.0 ± 2.5 mm, respectively, at a concentration of 5 µL/disk). Importantly, eucalyptol exhibited no phytotoxic effects on soybeans. Its potential as a biopesticide for soybean crops, replacing synthetic alternatives, shows promise, though further studies are needed.

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Section: Fungicidal Activitymentioning

confidence: 99%

Eucalyptol (1, 8-cineole), a monoterpene oxide with potential for protecting soybean crops against insect pests and phytopathogenic fungi

Wagner,

Sequín,

Perusset

et al. 2024

Preprint

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“…This index was computed as Υ = (x/X) + (y/Y), where X (dichloromethane extract, M1, or hinokinin) and Y (tebuconazole) represent the MID values of each drug when tested individually. The values x and y denoted the partial doses of X and Y, respectively, recorded at the MID value during the combined assays (Sequin et al, 2020). The Y values were interpreted as 1 (additive interaction), < 1 (synergistic interaction), > 1 (antagonistic interaction).…”

Section: Combined Action Of Tebuconazole With Dichloromethane Extract...mentioning

confidence: 99%

Antifungal activity of extracts from Justicia species against Fusarium graminearum

Sanchez Matías,

Gómez,

Jiménez

et al. 2024

Natural Product Research

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Fusarium graminearum causes destructive ear rot diseases in maize and wheat. New antifungals are essential to combat this pathogen, and aerial parts of Justicia species (Acanthaceae) are a potential source. We investigated the antifungal activity of extracts from stems and leaves of five Justicia species native to Northwest Argentina. The aerial parts were subjected to sequential extractions with dichloromethane, ethyl acetate, and methanol. The resulting extracts were tested by the disc diffusion method against F. graminearum strains. Only the leaf and stem extracts from J. xylosteoides displayed inhibitory effects, with the dichloromethane leaf extract as the most active. The compounds involved were identified as the lignans hinokinin, savinin, and isohibalactone.Both the dichloromethane extract and hinokinin synergized with tebuconazole, and inhibited deoxynivalenol biosynthesis. The identified compounds warrant further research as additives to azole fungicides for F. graminearum control.

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Antifungal and toxicological evaluation of the alkaloids fraction from Neltuma nigra leaves

Sequin,

Appelhans,

Heis

et al. 2023

Biocatalysis and Agricultural Biotechnology

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Use of extracts from Prosopis nigra in the control of Cercospora kikuchii and Septoria glycines

Cited by 6 publications

References 26 publications

Eucalyptol (1, 8-cineole), a monoterpene oxide with potential for protecting soybean crops against insect pests and phytopathogenic fungi

Eucalyptol (1, 8-cineole), a monoterpene oxide with potential for protecting soybean crops against insect pests and phytopathogenic fungi

Antifungal activity of extracts from Justicia species against Fusarium graminearum

Antifungal and toxicological evaluation of the alkaloids fraction from Neltuma nigra leaves

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