First report on the production of phytotoxic metabolites by <i>Mycoleptodiscus indicus</i> under optimized conditions of submerged fermentation

Portela, Valéria Ortaça; Moro, Anderson Bortoluzzi; Santana, Natielo Almeida; Baldoni, Daiana Bortoluzzi; Castro, Isac Aires de; Antoniolli, Zaida Inês; Dalcol, Ionara I.; Jacques, Rodrigo Josemar Seminoti

doi:10.1080/09593330.2020.1836030

Cited by 7 publications

(4 citation statements)

References 47 publications

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“…Previous report suggested that furan organic compounds are of bacteriostatic and fungistatic effect on diverse microorganisms ( Vijayakumar and Thirunanasambandham, 2021 ; Steglińska et al, 2022 ). Besides, previous studies had confirmed that microbes could produce different secondary metabolites under different culture conditions ( D’Silva and Herrett, 1971 ; Portela et al, 2022 ). In this research, GS2 was cultured on rice media, whether compounds 1 – 5 or other potential secondary metabolites are capable of promoting seed germination that could be produced under symbiotic condition or on different media deserved to be investigated in future research.…”

Section: Resultsmentioning

confidence: 93%

Furanoids from the Gymnadenia conopsea (Orchidaceae) seed germination supporting fungus Ceratobasidium sp. (GS2)

et al. 2022

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Five furanoids including a new analog (S)-1,4-di(furan-2-yl)-2-hydroxybutane-1,4-dione (1) together with four known ones, rhizosolaniol (2), 5-hydroxymethylfurfural (3), 2-furoic acid (4) and (2-furyl) oxoacetamide (5), were isolated from the fungal strain Ceratobasidium sp. (GS2) inducing seed germination of the endangered medicinal plant Gymnadenia conopsea of Orchidaceae. The structure of new furanoid 1 was determined mainly based on HR-ESI-MS and NMR spectral data. Modified Mosher’s reactions were used to establish the stereochemistry of the hydroxyl group in 1, which was not stable in Mosher’s reagents and transformed into four analogs 6–9. These degraded products (6–9) were elucidated based on UPLC-Q-TOF-MS/MS analysis, and compound 8 was further isolated from the degraded mixture and its structure was characterized through NMR experiments. Therefore, the absolute configuration of compound 1 was determined by electronic circular dichroism combined with quantum-chemical calculations adopting time-dependent density functional theory. Compounds (1–5), and 8 showed weak antioxidant activities, and compounds (2–4) displayed phytotoxicity on punctured detached green foxtail leaves. In addition, compounds 3 and 4 strongly showed inhibition activities on the seed germination of G. conopsea. This was the first chemical investigation of the symbiotic fungus of G. conopsea.

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Section: Resultsmentioning

confidence: 93%

Furanoids from the Gymnadenia conopsea (Orchidaceae) seed germination supporting fungus Ceratobasidium sp. (GS2)

et al. 2022

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“…In the case of the search for phytotoxic metabolites, the objective is to promote the establishment of metabolic pathways upregulated by the fungal strain during its interaction with the plant. Variables specific to the culture medium can also be considered to optimize the fungal secondary metabolites production e.g., temperature, the pH, or the glucose concentration 74 . It could also be interesting to stimulate, or even specifically direct the production of secondary metabolites of the fungus by adding extracts of a target weed to its culture medium.…”

Section: Methodological Approaches Used To Discover Identify and Expl...mentioning

confidence: 99%

“…Variables to the culture medium can also be considered to optimize the fungal secondary metabolites production e.g., temperature, the pH, or the glucose concentration. 74 It could also be interesting to stimulate, or even specifically direct the production of secondary metabolites of the fungus by adding extracts of a target weed to its culture medium.…”

Section: Cultivation Of Fungal Strainsmentioning

confidence: 99%

Phytotoxic fungal secondary metabolites as herbicides

Bendejacq‐Seychelles,

Gibot‐Leclerc,

Guillemin

et al. 2023

Pest Management Science

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Among the alternatives to synthetic plant protection products, biocontrol appears as a promising method. This review reports on the diversity of fungal secondary metabolites phytotoxic to weeds and on the approach generally used to extract, characterize, identify and exploit them for weed management. The 183 phytotoxic fungal secondary metabolites discussed in this review fall into five main classes of molecules: 61 polyketides, 53 terpenoids, 36 nitrogenous metabolites, 18 phenols and phenolic acids, and 15 miscellaneous. They are mainly produced by the genera Drechslera, Fusarium and Alternaria. The phytotoxic effects, more often described by the symptoms they produce on plants than by their mode of action, range from inhibition of germination to inhibition of root and vegetative growth, including tissue and organ alterations. The biochemical characterization of fungal secondary metabolites requires expertise and tools to carry out fungal cultivation and metabolite extraction, phytotoxicity tests, purification and fractionation of the extracts, and chemical identification procedures. Phytotoxicity tests are mainly carried out under controlled laboratory conditions (not always on whole plants), while effectiveness against targeted weeds and environmental impacts must be assessed in greenhouses and open fields. These steps are necessary for the formulation of effective, environment‐friendly fungal secondary metabolites‐derived bioherbicides using new technologies such as nanomaterials.This article is protected by copyright. All rights reserved.

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“…It is necessary to further explore the phytotoxic effects of plant extracts and fungi broth against weeds and invasive species (Alsharekh et al, 2022;Portela et al, 2022). In this sense, active compounds found in the genus Capsicum can inhibit the development of invasive species (García-Mateos et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Pre- and post- emergence control of Hovenia dulcis with extracts obtained from pepper (Capsicum baccatum)

Anchieta¹,

Pigatto²,

Baisch³

et al. 2022

Reveng

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This study evaluated the efficiency of extracts obtained from Capsicum baccatum by ultrasound-assisted extraction in the control of Hovenia dulcis, which is an invasive species popularly known in Brazil as “uva-do-japão”. The effects of extraction time (20 – 60 min), maximum power fraction (50 – 100%), and pulse cycle (0.3 – 0.7) were investigated on the activities of extracts. The pre-emergence assays demonstrated inhibition of 45-100% on the 14th day. In the post-emergence, the root and shoot lengths were 3.0 and 2.6 times smaller than the control (without application of extract). The fresh mass and dry mass were 4.7 and 4.2 times lower than the control. All these best results were found in the assay with higher extraction time (60 min) and power fraction (100%), and lower pulse cycle (0.3). Chlorophyll a and b and carotenoids ranged from 0.84 to 1.15, 0.19 to 0.35 and 0.32 to 0.40 mg/g fresh mass, respectively. Overall, it is demonstrated that extracts from Capsicum baccatum presented an inhibitory effect on the germination of Hovenia dulcis. Although the extract did not completely inhibit germination or cause the death of seedlings, it presented an effect against the normal development of seedlings, including the roots and shoots, thus allowing it to be used as a control strategy before germination or for small plants of this invasive species.

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First report on the production of phytotoxic metabolites by Mycoleptodiscus indicus under optimized conditions of submerged fermentation

Cited by 7 publications

References 47 publications

Furanoids from the Gymnadenia conopsea (Orchidaceae) seed germination supporting fungus Ceratobasidium sp. (GS2)

Furanoids from the Gymnadenia conopsea (Orchidaceae) seed germination supporting fungus Ceratobasidium sp. (GS2)

Phytotoxic fungal secondary metabolites as herbicides

Pre- and post- emergence control of Hovenia dulcis with extracts obtained from pepper (Capsicum baccatum)

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