Amadou Dıcko

Université de Lorraine

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Rachid Soulimani

Laboratoire Animal et Agroécosystèmes

Amadou Hamadoun Babana

Université des Sciences, des Techniques et des Technologies de Bamako

Adounigna Kassogué

Université des Sciences, des Techniques et des Technologies de Bamako

Chafique Younos

Laboratoire Animal et Agroécosystèmes

Abdelouaheb Djılanı

Badji Mokhtar University

Ali Zaiter

Université de Lorraine

Elie Baudelaire

École Nationale de la Statistique et de l'Administration Économique

Rokiatou Fané

Université des Sciences, des Techniques et des Technologies de Bamako

Jaouad Bouayed

Université de Lorraine

Djénéba Ouattara

Université des Sciences, des Techniques et des Technologies de Bamako

Cooperative Institutions

Université des Sciences, des Techniques et des Technologies de Bamako

Université de Lorraine

Centre National de la Recherche Scientifique

University of Bamako

Université Joseph Ki-Zerbo

Laboratoire de Chimie Organique

Institut de l'Environnement et Recherches Agricoles

University of Ngaoundéré

Mali-Folkecenter

Texas A&M University

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Polyphenols contents and antioxidant potential of Nauclea latifolia Smith (Rubiaceae) acetonic fractions from Burkina Faso

Journal of Drug Delivery and Therapeutics (2021)

Almamy Konaté N. Méda Amadou Dıcko Eric Sami Kam Benjamin Kouliga Koama

Scientific information on antioxidant properties and phenolic content of Nauclea latifolia used in ethnoveterinary medicine in Burkina Faso are limited. Therefore, the quantification of the antioxidant activity of different parts of this specie remains an interesting and useful task, particularly for finding new sources for natural antioxidants. The aim of this study was to evaluate the antioxidant activity and total polyphenols of Nauclea latifolia Smith (Rubiaceae) acetonic fractions from Burkina Faso. n-hexane, dichloromethane, ethyl acetate and n-butanol fractions of leaves, barks and root barks were tested for their antioxidant activities using DPPH, ABTS and FRAP methods. Folin-Ciocalteu and AlCl3 reagents were used to quantify the polyphenols. n-butanol fraction of barks (58.16 ± 0.76 mg GAE/100 mg), dichloromethane fraction of barks (51.13 ± 0.99; 26.14 mg GAE/100 mg) have presented the best total phenolic contents while the best total flavonoid contents were found in n-butanol fraction of leaves and n-hexane fraction of leaves with 4.85 ± 0.14 mg EQ/100mg and 2.92 ± 0.13 mg EQ/100mg, respectively. It was observed that n-hexane fraction of leaves was scavenge more DPPH free radicals with a value of 1011.98± 17,01 µmol EAA/g. That of n-butanol fractions of barks was showed the best ferric reduction power (3056.37 ± 96.66 µmol EAA/g) and the highest ABTS cation radicals scavenging capacity (7031.52 ± 254.98 µmol EAA/g). Nevertheless, this work encourages investigations on Burkina Faso plant species used in the ethnoveterinary medicine as sources of antioxidants. Keywords: Fraction; Ouagadougou; Barks, Total Polyphenols Contents; Radicals.

ABTS

Hexane

Fraction (chemistry)

Dichloromethane

10.22270/jddt.v11i6.5069

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Citations (2)

Study on biological activities and chemical composi tion of extracts from Desmodium adscendens leaves

François Nsemi Muanda Rachid Soulimani Amadou Dıcko

Phenolic compounds in Desmodium adscend ens leaves extract were isolated, identified characterized by HPLC, NMR and MS. Five phenolic compounds were identified, caffeic acid, p-coumaric acid, epicatechin, rutin, quercetin. The essential oil was obtained by distilled method. The major com pounds found in the essential oil were phytone (14,72 %), caryophyllene oxide (11,32%), esdesma (7,41%), geraniol (5,42 %), linalool (5,33%), palmitic acid (5,06 %), �-caryophyllene (4,76 %), scytalone (3,83%), s-ionone (3,47%), 2,2-dimethyl-h exanale (3,37 %), pelargonaldehyde (3,26 %), hyperforine (3,27%), 2-pentyl furan (2,71), oleic acid (2,68 %), and 4- azidoheptane (2,02 %). The antimic robial properties evaluate on Water extract (WE) and methanol water extract (MWE) showed that MWE has the better activities on Escherichia coli , Aspergillus niger , Pseudomonas aeruginosa ; Bacillus subtillis , Staphylococcus aureus than WE.

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ChemInform Abstract: Medium Effects in Unsymmetrical Disulfide Compounds: Synthesis from Bunte Salts.

ChemInform (1995)

P. Hiver Amadou Dıcko D. Paquer

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

10.1002/chin.199519091

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Endophytic Bacteria-based Biostimulant Improved Rice (Oryzae sativa L.) Growth and Production in Mali

South Asian Journal of Research in Microbiology (2023)

Djeneba Nantoumé Adounigna Kassogué Sognan Dao Amadou Dıcko Djénéba Ouattara

Aims: Rice (Oryza sativa L.) is usually the staple food of more than half of the world's population, and in particular that of Mali. Mali is among the largest producers of rice in West Africa. But also given the in-population growth and in consumption, Mali is forced to resort to imports to cover its rice needs, thus 45% of the rice sold on the national market comes from imports. For self-sufficiency in rice, the aim of this research is to formulate a biostimulant with high capacity to improve rice growth and production in Mali. Study Design: This experimental research involving a Malian local rice cultivar named Kogoni and biostimulant endophyte bacteria isolated from rice in Mali. Pace and Duration of Study: This research was carried out in greenhouse at LaboREM-Biotech and in the field at the Office of irrigated perimeters of Baguineda (OPIB) for 3 years. Study Design: To achieve this objective: endophyte bacteria with high plant growth promotion activities were selected from bacterial collection of LaboREM, biostimulants composed with selected endophytes were formulated, formulated biostimulants were tested in greenhouses and fields to prove their capacities to improve rice growth and production. Results: A total of five isolates, including 3 from Xoo and 2 from Xoc, were isolated in Niono from two varieties of rice: Kogoni91-1 and Adny11. No isolate characteristic of Xanthomonas oryzae was observed on samples from Baguineda. The three selected rice endophytes were tested in vitro to assess their effectiveness in controlling Xoo and Xoc. Following this test, 100% of the endophytes showed significant antimicrobial activity against Xoo and Xoc with an inhibition diameter varying between 6 and 28.5 mm. endo Ad9 was selected for its strong ability to inhibit the growth of both pathogens at the same time.

Staple food

Endophyte

10.9734/sajrm/2023/v17i1322

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Screening of rice endophytic natives biofertilizers with plant growth-promoting characteristics

African Journal of Agricultural Research (2021)

Amadou Dıcko Djeneba Nantoumé Djénéba Ouattara Adounigna Kassogué Rokiatou Fané

In Mali, rice cultivation is faced with declining yields due to insufficient soil nutrients and diseases with yield losses of up to 80%. The use of endophytic bacteria and fungi is a more ecological and effective alternative compared to chemicals. This study aims to select at least one endophytic rice bacterium in combination with mycorrhizal fungi to improve the rice production in Mali and effectively control the growth of Xanthamos oryzae. This selection focused on: (i) the isolation of endophytes and (ii) the identification of PGP traits and their enzymatic productions. Thirty seven (37) endophytic bacteria were successfully isolated from rice roots (10 isolates) and seeds (27 isolates) (Table 1). Among the strains isolated, 24 and 29 isolates showed antibiosis activities, respectively against XOO and XOOC, 24 and 12 isolates showed, respectively chitin and melanin activities, and 20 isolates produced siderophore. All inoculated rice roots with the endophytic bacteria showed a rice growth-promoting ability. In vitro selection made it possible to retain 6 isolates (DK1, DK2, DK3, DK4, REM2 and REM9). An 18.4% increase in grain weight per plant of rice and 17.14% in yield per hectare for the treatments inoculated with DK4. The size of the plants, the number of fertile thalli, the biomass (fresh and dry) were respectively improved by 8.48, 10.1, 11.82 and 18.43% for the treatments inoculated with DK4 followed by REM9. All agronomy parameters measured were significantly increased by bacterial endophytes compared to the controls. These results showed that bacterial endophytes with high PGP activities improve host-plant growth traits and can be used as biofertilizers. Key words: Bacterial endophytes, rice, biofertilizer, plant growth, Mali.

Antibiosis

Biofertilizer

Hectare

Azotobacter

10.5897/ajar2020.15191

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PARTICLE SIZE EFFECTS ON ANTIOXIDANT POTENTIAL AND LARVICIDAL EFFICACY OF ESSENTIAL OIL FROM Lippia chevalieri (Mold) LEAVES ONAnopheles gambiae s.l. (Diptera: Culicidae)

Sandrine Rup-Jacques Foko Dadji Gisèle Aurelie Elie Baudelaire François Muanda Nsemi Damas Dainone Ignareki

Lippia

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New bifunctionalised additives for cold rolling emulsions

Wear (1996)

P. Hiver Amadou Dıcko D. Paquer

Cold forming

10.1016/0043-1648(95)06743-4

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Citations (1)

How do grinding and sieving impact on physicochemical properties, polyphenol content, and antioxidant activity of Hieracium pilosella L. powders?

Journal of Functional Foods (2017)

Loïc Becker Ali Zaiter Jérémy Petit Marie-Céleste Karam Mélanie Sudol

Phytochemical

Trolox

10.1016/j.jff.2017.06.043

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Citations (39)

Development of a Biological Phosphate Fertilizer to Improve Wheat (Triticum Aestivum L.) Production in Mali

Procedia Engineering (2016)

Amadou Hamadoun Babana Adounigna Kassogué Amadou Dıcko Kadia Maîga Fassé Samake

Tilemsi Rock phosphate Tilemsi (TRP), is a good and inexpensive alternative to imported phosphate fertilizers. Thiobacillus thioparus, Thiobacillus thiooxidans and Thiobacillus ferooxidans, are known for their ability to oxidize soil sulfur and sulfides and influence the solubilization of inorganic phosphates. These bacteria have also a good potential to improve plant growth. In order to improve wheat response to fertilization with TRP, we describe in this work, the isolation from agricultural soils and the selection of different Thiobacillus strains with high TRP-solubilizing activities. Initially, 91 acidifying bacteria were selected, but after 10 subcultures on agar and in liquid media, only four bacteria were chosen for their strong P-solubilizing activities. No Thiobacillus ferrooxidans, was isolated from tested agricultural soils. A significant correlation was observed between acid production by isolated strains and phosphate solubilization. In a field trial in Koygour (Dire), wheat (Triticum aestivum cv. Tetra) was inoculated with selected strains of Thiobacillus and fertilized with the TRP or diammonium phosphate (DAP). The growth and yield parameters measured were the plant the tillers per plant, panicles per plant, percentage of fertile tillers (number of tillers with panicles/total number of tillers), panicle length, grain per panicle, grain yield calculated at 13% moisture, and 1000 grain weight. Yield increase relative to control and yield relative efficiency were also calculated. BioTRP1, with yield of 2840 kg/ha grain, increased grains and straw yield at 45.64 and 73.81%, respectively with the highest relative yield efficiency. BioTRP1 is the only treatment not significantly different from the Di-ammonium phosphate. At harvest, average number of tillers was 18 for treatment 5 and a bit lower for di-ammonium phosphate with 17.8. Percentage of fertile tillers was 92% and 90% for the di-ammonium phosphate and the BioTRP1 treatments respectively. Panicle length was more than double for di-ammonium phosphate and BioTRP treatments compared to control. The number of grains/panicle was also highest for di-ammonium phosphate and BioTRP1 with 54 and 51 grains/panicle respectively. The di-ammonium phosphate, the BioTRP1 and control were significantly different and showed the maximums and minimum weights of 28; 27 and 20 g for 1000 grains of wheat. BioTRP2 and BioTRP3, formulated with Thiobacillus thiooxidans AHB411 and Thiobacillus thiooxidans AHB417, also caused yield increases of 33.33 and 11.97% respectively. The choice of Thiobacillus thiooxidans AHB 436, and the formulation of BioPNT will be discussed

Thiobacillus

Panicle

Diammonium phosphate

Phosphorite

10.1016/j.proeng.2016.02.091

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Citations (12)

A Malian native plant growth promoting Actinomycetes based biofertilizer improves maize growth and yield

Symbiosis (2018)

Amadou Dıcko Amadou Hamadoun Babana Adounigna Kassogué Rokiatou Fané Djeneba Nantoumé

Biofertilizer

Dry weight

10.1007/s13199-018-0555-2

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Citations (25)