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      Initial performance of Achillea millefolium in response of humic acids

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          Abstract

          ABSTRACT Owing to numerous health benefits, the cultivation of medicinal plants has significantly increased. Achillea millefolium L. (common names: milefoil, yarrow) is attributed important medicinal properties. Consumers of herbal medicinal products demand for production systems based on ecological farming principles, thus an interesting technology would be application biostimulant based on humic acids. The objective of this study was to evaluate the rooting and initial performance of Achillea millefolium in response to the use of humic acids (HA) isolated from composted cattle manure and poultry litter and applied in different concentrations (0, 10, 20, 30, and 40 mmolL-1 of HA) at the propagation phase. Rooting and plant biomass accumulation were analyzed. Humic acids derived from poultry litter promoted root development and increase of fresh biomass and total dry mass, proving their biostimulant effect. The optimal concentration of humic acids estimated for the initial development of A. millefolium was 22.25 mmolL-1.

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          THE SUPRAMOLECULAR STRUCTURE OF HUMIC SUBSTANCES

          Alessandro Piccolo (2001)
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            Antioxidant and antimicrobial activity of the essential oil and methanol extracts of Achillea millefolium subsp. millefolium Afan. (Asteraceae).

            Ferda Candan, Mehmet Ünlü, Bektas Tepe … (2003)
            The in vitro antimicrobial and antioxidant activities of the essential oil and methanol extracts of Achillea millefolium subsp. millefolium Afan. (Asteraceae) were investigated. GC-MS analysis of the essential oil resulted in the identification of 36 compounds constituting 90.8% of the total oil. Eucalyptol, camphor, alpha-terpineol, beta-pinene, and borneol were the principal components comprising 60.7% of the oil. The oil strongly reduced the diphenylpicrylhydrazyl radical (IC(50)=1.56 micro g/ml) and exhibited hydroxyl radical scavenging effect in the Fe(3+)-EDTA-H(2)O(2) deoxyribose system (IC(50)=2.7 micro g/ml). It also inhibited the nonenzymatic lipid peroxidation of rat liver homogenate (IC(50)=13.5 micro g/ml). The polar phase of the extract showed antioxidant activity. The oil showed antimicrobial activity against Streptococcus pneumoniae, Clostridium perfringens, Candida albicans, Mycobacterium smegmatis, Acinetobacter lwoffii and Candida krusei while water-insoluble parts of the methanolic extracts exhibited slight or no activity. This study confirms that the essential oil of Achillea millefolium possesses antioxidant and antimicrobial properties in vitro.
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              Indolacetic and humic acids induce lateral root development through a concerted plasmalemma and tonoplast H+ pumps activation.

              Daniel Zandonadi, Luciano Canellas, Arnoldo Rocha Façanha (2007)
              Increasing evidences have indicated that humic substances can induce plant growth and productivity by functioning as an environmental source of auxinic activity. Here we comparatively evaluate the effects of indole-3-acetic acid (IAA) and humic acids (HA) isolated from two different soils (Inseptsol and Ultisol) and two different organic residues (vermicompost and sewage sludge) on root development and on activities of plasmalemma and tonoplast H(+ )pumps from maize roots. The data show that HA isolated from these different sources as well as low IAA concentrations (10(-10) and 10(-15) M) improve root growth through a markedly proliferation of lateral roots along with a differential activation not only of the plasmalemma but also of vacuolar H(+)-ATPases and H(+)-pyrophosphatase. Further, the vacuolar H(+)-ATPase had a peak of stimulation in a range from 10(-8) to 10(-10) M IAA, whereas the H(+)-pyrophosphatase was sensitive to a much broader range of IAA concentrations from 10(-3) to 10(-15) M. It is proposed a complementary view of the acid growth mechanism in which a concerted activation of the plasmalemma and tonoplast H(+ )pumps plays a key role in the root cell expansion process driven by environment-derived molecules endowed with auxinic activity, such as that of humic substances.
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                Author and article information

                Journal
                Journal ID (publisher-id): rceres
                Title: Revista Ceres
                Abbreviated Title: Rev. Ceres
                Publisher: Universidade Federal de Viçosa (Viçosa, MG, Brazil )
                ISSN (Print): 0034-737X
                ISSN (Electronic): 2177-3491
                Publication date (Print and electronic): October 2021
                Volume: 68
                Issue: 5
                Pages: 498-502
                Affiliations
                [1] Florestal Minas Gerais orgnameUniversidade Federal de Viçosa orgdiv1Instituto de Ciências Agrárias Brazil marihus@ 123456ufv.br
                [2] Campos dos Goytacazes Rio de Janeiro orgnameUniversidade Estadual do Norte Fluminense orgdiv1Núcleo de Desenvolvimento de Insumos Biológicos para Agricultura Brazil linehsam@ 123456gmail.com
                Article
                Publisher ID: S0034-737X2021000500498 Publisher ID: S0034-737X(21)06800500498
                DOI: 10.1590/0034-737x202168050015
                SO-VID: 2336c991-94e6-493c-9097-8ad099666c60
                License:

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                Date accepted : 15 April 2021
                Date received : 11 November 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 31, Pages: 5
                Product

                SciELO Brazil

                Categories
                Subject: Short Communications

                Keywords: medicinal plants,biostimulant,organic fertilization
                Data availability:
                Keywords: medicinal plants, biostimulant, organic fertilization

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