ACTIVIDAD ANTIOXIDANTE Y ANTIFÚNGICA IN VITRO DE EXTRACTOS DE CARAMBOLA (Averrhoa carambola L.)

Xoca-Orozco, Luis Ángel; Zamora-Gasga, Víctor Manuel; Espinosa-Alonso, Gabriela; Velázquez-Estrada, Rita M.; López-García, Ulises Miguel; Sáyago‐Ayerdi, Sonia G.; Chacón-López, Alejandra

doi:10.18633/biotecnia.v20i2.608

Cited by 4 publications

(4 citation statements)

References 20 publications

(22 reference statements)

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“…On the other hand, flesh-coloured potato (FCP) has been a major target of study due to its high concentration of anthocyanins and HCADs, compounds with a high antioxidant activity [ 17 , 18 ]. The use of phenolic compounds emerges as an alternative of interest since they possess antifungal activity against R. solani , with an in vitro mycelial growth inhibition of up to 67.03% reported [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Antifungal Potential of Grape Cane and Flesh-Coloured Potato Extracts against Rhizoctonia sp. in Solanum tuberosum Crops

Gómez,

Bravo,

Ringler

et al. 2023

Plants

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Potato (Solanum tuberosum) is one of the most important food crops worldwide, and Rhizoctonia solani infection is one of the most common diseases. The objective of this study was to evaluate the antifungal activity of Vitis vinifera byproducts (VIDES) and flesh-coloured potato (FCP) extracts against Rhizoctonia sp. in potato crops. Photosynthetic traits, phenolic profiles, and antioxidant and enzymatic activities were determined. The VIDES extract showed a 151.4% improvement in stomatal conductance and a 258.5% improvement in the photosynthetic rate compared to the plants without infection. Regarding the enzymatic antioxidant activity, the best response was found in the FCP treatments with 30 min of application, with increases of 25%, 161%, and 450% in ascorbate peroxidase, catalase (CAT), and glutathione reductase (GR) activities, respectively, compared to plants without infection. For the VIDES extract, a 15 min application produced an 83% increase in CAT activity, whereas a 181% increase in GR activity compared to plants without infection was produced after a 30 min application. A similar behaviour was observed for antioxidant compounds, where FCP had a higher concentration of compounds and antioxidant activity. This finding suggests that FCP and VIDES promote the synthesis of plant-defence compounds against Rhizoctonia sp. in potato crops, in which the application time is a determining factor.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Antifungal Potential of Grape Cane and Flesh-Coloured Potato Extracts against Rhizoctonia sp. in Solanum tuberosum Crops

Gómez,

Bravo,

Ringler

et al. 2023

Plants

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“…Despite the type of solvent used, the antimicrobial activities of plants against a number of plant pathogens are linked to their richness in bioactive compounds. These compounds not only have an impact on the growth of the mycelium of the fungi, but they also influence the production and sporulation of spores [18]. Many studies show the remarkable presence of bioactive compound in medicinal plants [19,4,16,17].…”

Section: Introductionmentioning

confidence: 99%

Different Morphotypes of Fusarium oxysporum Isolated from Xanthosoma sagittifolium L. Schott Roots: Action of Ethanol Leaf Extracts of Psidium guajava on their in Vitro Inhibition and on X. Sagittifolium Plants Inoculated with F. oxysporum

Djeuani

Mbouobda

Mbekem

et al. 2020

IJPR

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The objective of this study was to determine the different morphotypes of Fusarium oxysporum present in the root of Xanthosoma sagittifolium and evaluate the effect of alcoholic extracts of Psidium guajava on their in vitro inhibition. Strains of Fusarium oxysporum were collected in eight localities where X. sagittifolium is grown. Fusarium strains isolated from roots of X. sagittifolium harvested in each locality were grown on PDA medium. The antifungal test was evaluated using ethanol extracts from P. guajava leaves at 30 and 60%. The virulence test of each strain on young plants of X. sagittifolium aged three months were realized. Eight strain of Fusarium oxysporum were successfully isolated. After maximum growth, five morphological types were observed (pionnotal, sclerotic, clowny, cottony and ras senescent). The cottony strain was abundant and present in all the locality. Histological analysis of the different strains obtained revealed the presence of septate or siphoned hyphae and three types of conidia (microconidia, macroconidia and sporangiospores or chlamidospores). The inhibition tests were very high with 60% of ethanol extract of P. guajava, and 83.33% of inhibitory effect were observed after eight days of growth, in the strains collected in X. sagittifolium roots, in L3 (Loum) and L4 (Bangoua) localities. After infection of X. sagittifolium plants with each strain of F. oxysporum isolated, symptoms observed were yellowing and wilting of leaves. However, plants inoculated with the L3 (Loum) strain showed both yellowing and wilting of leaves. The application of ethanol extracts from P. guajava leaves reduced the severity of the disease in the inoculated plants after 14 days. These results obtained showed that F. oxysporum is not only saprophytic fungi, it’s also able to induce yellowing and wilting of leaves in X. sagittifolium.

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“…In a recent study, star fruit (Averrhoa carambola) leaf extracts were evaluated against the fungus Colletotrichum sp. The results showed good control of the mycelial growth as well as the sporulation (Xoca-Orozco et al, 2018). The aim of this project was to investigate the in vitro antifungal activity of aqueous extracts from coconut residues against P. italicum.…”

mentioning

confidence: 99%

In vitro evaluation of residues of coconut (Cocos nucifera L.) aqueous extracts, against the fungus Penicillium italicum

et al. 2019

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Penicillium italicum is an important pathogen that attacks citrus fruits. Traditionally, chemical fungicides are widely used for controlling fruit diseases, however environmental and health issues have lead to the research of safe alternatives. The efficacy of aqueous extracts from mesocarp (fibrous husk) and exocarp (outer layer) of coconut were evaluated against P. italicum development in terms of mycelial growth, sporulation and germination process. Mesocarp extracts were more efficient to control the mycelial development (82%) compared to exocarp extracts (77%). The sporulation was significantly reduced with the application of extracts from mesocarp (94%) and exocarp (93%) compared to the control treatments. The germination process was strongly affected by the application extracts. Thus, the use of these extracts could be a suitable alternative to inhibit P. italicum in citrus fruit, besides the use of these residues as a source of antifungal compounds could reduce coconut residues accumulation in the environment.

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ACTIVIDAD ANTIOXIDANTE Y ANTIFÚNGICA IN VITRO DE EXTRACTOS DE CARAMBOLA (Averrhoa carambola L.)

Cited by 4 publications

References 20 publications

Evaluation of the Antifungal Potential of Grape Cane and Flesh-Coloured Potato Extracts against Rhizoctonia sp. in Solanum tuberosum Crops

Evaluation of the Antifungal Potential of Grape Cane and Flesh-Coloured Potato Extracts against Rhizoctonia sp. in Solanum tuberosum Crops

Different Morphotypes of Fusarium oxysporum Isolated from Xanthosoma sagittifolium L. Schott Roots: Action of Ethanol Leaf Extracts of Psidium guajava on their in Vitro Inhibition and on X. Sagittifolium Plants Inoculated with F. oxysporum

In vitro evaluation of residues of coconut (Cocos nucifera L.) aqueous extracts, against the fungus Penicillium italicum

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