BACKGROUND: Low-cost organic fertilizers, such as coconut powder and vermicompost, and arbuscular mycorrhizal fungi (AMF) may benefit the Passiflora edulis f. flavicarpa plant. However, it has not been established whether the joint application of these inputs may increase the production of vitexin and other molecules associated with the phytotherapeutic properties of this plant. Here, we tested the hypothesis that the application of AMF and organic fertilizers maximizes the production of bioactive compounds in leaves of P. edulis. RESULTS: The inoculation of Acaulospora longula into P. edulis grown in fertilization-free soil promoted an increase of 86% in the concentration of leaf vitexin, 10.29% in the concentration of total phenols, and 13.78% in the concentration of total tannins in relation to the AMF-free control, rendering soil fertilization superfluous.CONCLUSION: The application of A. longula increases the production of foliar biomolecules, such as vitexin, in yellow passion fruit plants. Thus, the addition of coconut powder and vermicompost to the substrate composition is not necessary, leading to the commercialized production of phytomass in the herbal medicines industry.
Background: Libidibia ferrea is a species particular to the caatinga presenting medicinal properties for containing bioactive compounds. The use of Arbuscular Mycorrhizal Fungi (AMF) can increase the production of biomolecules in the legume leaves; however, no light has been shed on the role of symbiosis in maximizing metabolites production in the bark of L. ferrea stem.Objective:The aim was to select AMF that are efficient at increasing the production of phenolic compounds with medicinal properties in the bark of the L. ferrea stem.Methods:The experiment was designed in randomized blocks with four inoculation treatments (plants pre-inoculated with Claroideoglomus etunicatum, with Gigaspora albida, with Acaulospora longula, and non-inoculated plants – control) with six repetitions. Thirteen months after the transplanting, the plants were pruned and the bark of the stem was collected; subsequently, this plant material was dried in a chamber. After the drying process, fractions of the bark of the stem were macerated in methanol. The extracts were further used for analyses of the biomolecules.Results:The flavonoids concentration had an increase of, respectively, 236% and 186% in relation to the control for the treatments with A. longula and C. etunicatum; plants inoculated with A. longula had an increase of 47% in total tannins concentration compared with the non-inoculated control – a benefit that the proanthocyanidins did not present.Conclusion:Applying inoculation with A. longula may be an alternative to increase the production of biomolecules of the secondary metabolism in the bark of the L. ferrea stem in field conditions.
BACKGROUND Our contemporary way of life has led us to consume high amounts of chemically‐synthesized allopathic medicinal products and anxiolytics to which a viable alternative is the use of Passiflora‐based herbal medicines with composition containing vitexin, a flavonoid with anxiolytic and antidepressant properties. Arbuscular mycorrhizal fungi (AMF) are known for enhancing the production of biomolecules, however, increase production of phytochemistry in Passiflora edulis f. flavicarpa has not been reported in the literature. Our aim was to select AMF to benefit the production of vitexin in leaves of P. edulis by inoculating seedlings in the region of roots with Acaulospora longula, Claroideoglomus etunicatum and Gigaspora albida. RESULTS The inoculation increased the concentration of vitexin in 63.64% and the inoculation with A. longula also increased the content of flavonoids and total saponins in the leaves in relation to the control. CONCLUSION The increase in the production of vitexin in the leaf in response to the inoculation with AMF, with emphasis to A. longula, interests the pharmaceutical industry and can generate profit to the production of yellow passionfruit‐based anxiolytic herbal medicine. © 2019 Society of Chemical Industry
Background: Several countries have made an association that how conventional and traditional medicines support the rational use of medicinal plants in different treatments. Brazil has stimulated the cultivation of and the development of the studies of Libidibia ferrea, a plant with medicinal properties, which are provided by the presence of bioactive compounds in its several parts, such as fruits. The synthesis of these biomolecules may increase with Arbuscular Mycorrhizal Fungi (AMF) inoculation. However, there have been no previous reports about the optimization in the production of biomolecules in the fruits of mycorrhizal L. ferrea. Objective: The aim of this study was to define the potential advantages of inoculation with AMF by increasing the production of biomolecules and antioxidant activity in fruits of mycorrhizal L. ferrea. Methods: The phytochemical and mycorrhizal analyses occurred after 32 months of transplanting to the field and the plants were inoculated or not with Acaulospora longula, Claroideoglomus etunicatum and Gigaspora albida and then by transplanting the seedlings to the field. Results: Compared to those from the control treatment, the concentration of phenols and tannins in the fruits of L. ferrea inoculated with A. longula increased 26.4% and 39.8% (p <0.05), respectively. The fruits also had higher antioxidant activity. In contrast, the concentration of phosphorus in the fruits of L. ferrea inoculated with A. longula and C. etunicatum was not incresead. Because the concentration of phosphorus in fruits was verified in this study. Conclusion: Mycorrhization increased the concentration of biocompounds and antioxidant activity in the fruits of L. ferrea, which is of great interest to the herbal medicine industry.
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