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Tectonic Evolution of Paleoproterozoic Formations in the North-East of Côte d’Ivoire (Bondoukou-Tanda, West African Craton)

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International Journal of Geosciences 2024年第10期15卷 774-791页

作者： Kouadio david koffi Brice Roland Kouassi Raoul koffi Teha N’Guessan Houssou Nestor Marc Ephrem Allialy Laboratory of Geology Mineral and Energy Resources/Training and Research Unit in Earth Sciences and Mineral Resources Flix Houphout-Boigny University Abidjan Cte dIvoire UFR-Biological Sciences Geosciences Department Peleforo Gon Coulibaly University Korhogo Cte dIvoire

The objective of this work is to contribute to the crustal evolution during the Paleoproterozoic in the Northeast of Côte d’Ivoire through the structural study of the Bondoukou-tanda locality. To do this, we proceeded by a macroscopic observation of the outcrops for the identification of the structures (schistosity, fold, shear, and lineation). The structures indicated the direction of the main constraints and the relative correlations between the lithologies. The structural measurements, in particular the direction and the dip obtained, were all processed by the GEOrient software to draw up the stereographic projections for a static interpretation of the measurements. Given the rarity of rock outcrops in the study area, the teleanalytical data were of considerable support in the structural analysis. The various treatments carried out on the ENVI 5.2 software made it possible to identify a total of 471 lineaments. They cover the entire area and are of variable lengths (1.24 to 9.73 km). The different directions highlighted from this methodology are a main direction: NNW-SSE to NW-SE;a secondary direction: NNE-SSW to NE-SW;a tertiary direction: ENE-WSW to E-W. Associated with the lithology map, the teleanalytical map shows that the lineaments are unevenly distributed throughout the study area. The lineaments appear more compact in the volcano-sedimentary and sandstone-conglomeratic units than in the granitoid intrusives. However, the Bondoukou granodiorite appears to be the least fractured lithology.

关键词： Structural Birimian Bondoukou-Tanda Tarkwaian WAC

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Petro-Geochemistry Contraints of Côte d’Ivoire North-East Plutonites: Implications for Eoeburnean Magmatism of Baoulé-Mossi Domain (Southern of West African Craton)

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Journal of Geoscience and Environment Protection 2022年第9期10卷 185-206页

作者： Brice Roland Kouassi Marc Ephrem Allialy N’Guessan Houssou Nestor Kouadio david koffi UFR-Biological Sciences Geosciences Department Peleforo Gon Coulibaly University Korhogo C&#244 te d’Ivoire Laboratory of Geology Mineral and Energy Resources/Training and Research Unit in Earth Sciences and Mineral Resources Félix Houphou&#235 t-Boigny University Abidjan C&#244 te d’Ivoire

Plutonites are part of the set of crystallines compose the Precambrian basement. Their study is capital because it allows participating in the debates on the geodynamic evolution of the West African craton. This study concerns granitoids and dioritoids of the North-East of Côte d’Ivoire located in the Man-Leo ridge structured by Eoeburnean magmatism. The petrographic and geochemistry constraints make it possible to say that these rock formations have evolved by the process of fractional crystallization. They have a hybrid origin (mantle and crust), metaluminous to peraluminous highlighted by geochemistry. Concerning the geotectonic context, these plutonites of the Baoulé-Mossi domain are emplacement in a context of subduction more precisely in a context of volcanic arc.

关键词： Plutonites Contraints Magmatism Source Geotectonics Côte d’Ivoire West African Craton

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Comparative Performance of Microscopy and Nested PCR for the Detection of Cryptosporidium Species in Patients Living with HIV/AIDS in Abidjan (Côte d’Ivoire)

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American Journal of Molecular Biology 2023年第1期13卷 18-31页

作者： N’Docho Assi Fiacre-Tanguy Gonédélé Bi Sery Ernest Tuo Karim Bialé Marina Danielle Datcho-Gouenet Ayaud N’Guessan Tiacoh Landry koffi Attoungbré Clément koffi david Ako Ako Aristide Bérenger Vanga Bosson Abo Henriette Touré Offianan André Department of Parasitology Mycology Institut Pasteur Abidjan C&#244 te d’Ivoire Laboratory of Genetics and Species Improvement Félix Houphou&#235 t-Boigny University Abidjan C&#244 te d’Ivoire Department of Parasitology Mycology UFR Pharmaceutical and Biological Sciences Félix Houphou&#235 t-Boigny University Abidjan C&#244 te d’Ivoire

Cryptosporidium spp. infection is one of the causes of diarrhea in people living with HIV/AIDS. The objective of this study is to compare the sensitivity of microscopy and molecular biology to determine the prevalence of Cryptosporidium spp. in Patients Living With HIV (PLWH). This is a descriptive cross-sectional study conducted in three care centers for people living with HIV/AIDS in Abidjan. It took place from November 2018 to March 2020. Sociodemographic data were obtained via a questionnaire. Stool and blood samples were collected and analyzed for microscopy and Nested PCR detection of Cryptosporidium spp. Blood samples were analyzed for CD4+ count. A total of 363 stool samples were collected from the three sites. Individuals aged 40 - 50 years (36.52%) were most likely to participate in the study. HIV Type 1 accounted for 86.22% of the study population. The samples collected consisted of 47.65% diarrheal stool. Microscopic examination of the stool yielded a prevalence of 3.86% for Cryptosporidium spp. while the prevalence was 3.96% with molecular identification. No statistically significant difference was observed between these two prevalences (χ2 = 0.26;p = 0.609). CD4+ count was the factor associated with Cryptosporidium spp. infection for both microscopy (OR = 0.887, p = 0.001) and PCR (OR = 0.896, p = 0.001). This study demonstrated that Nested PCR improves the detection of Cryptosporidium spp. in patient diagnosis.

关键词： Cryptosporidium PCR Microscopy PLHIV Côte D’Ivoire

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Sensory Phenotypic and Molecular Identification of Aromatic Rice Accessions Cultivated in Benin

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Advances in Bioscience and Biotechnology 2024年第3期15卷 195-206页

作者： Chimène Nadège Mahoussi Nanoukon koffi david Montcho Hambada Deless Edmond Fulgence Thiémélé Bignon Meyrix Pamela Franzel Loumedjinon Babatoundé Franel Carel Wenceslas Affolabi Amed Sèmèvo Havivi Kéllya Laurinzo Déguénon Grâce Finagnon Vitoekpon Arielle Bankole Lambert Gustave Djedatin Laboratory of Molecular Biology and Bioinformatics Applied to Genomics National School of Applied Biosciences and Bio-technologies National University of Science Technology Engineering and Mathematics Dassa-Zoumè Benin Laboratory of Molecular Biology and Bioinformatics Applied to Genomics National School of Applied Biosciences and Biotechnologies National University of Science Technology Engineering and Mathematics Dassa-Zoumè Benin Laboratory of Plant Horticultural and Forestry Sciences National University of Agriculture Kétou Benin Genetics Teaching and Research Unit Department of Biochemistry-Genetics Peleforo GON COULIBALY University Korhogo C&#244te d’Ivoire

Rice is one of the most widely cultivated cereals in the world, and its aroma is increasingly in demand. With the advancement of research, a major rice flavor gene has been identified on rice chromosome 8. It encodes non-functional betaine aldehyde dehydrogenase leading to the accumulation of 2-acetyl-1-pyrroline which is the major olfactory compound that confers the fragrant character to rice. The aroma of rice is considered a special trait of enormous economic importance that determines the prime price in world trade. To satisfy the needs of the population and reduce rice imports into Benin, we conducted this study to identify aromatic rice accessions grown in Benin. Seventy-two rice accessions collected across Benin were PCR amplified with three SSR markers RM 7049, Aro 7, and RM 223, linked to the fgr (fragrance of rice) aroma gene. Molecular analysis revealed that 12 of the 72 accessions, namely Bagou 19, Bagou 22, Tchaka 34, Foun 15, Tchaka 41, Nana 32, Kan 61, Kung 69, Kung 67, Bagou 20, Agbab 101 and Koum 55 possess the fgr gene and can be considered as aromatic rice accessions. A sensory phenotypic test using KOH was carried out on rice accessions carrying fgr gene. Of the twelve positives, only one had the smell of aromatic rice, like the Azucena control. These results show that Benin also has aromatic rice varieties that can be sold on national and international markets.

关键词： Aromatic Rice 2-Acetyl-1-Pyrroline SSR Markers Benin

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Making bridges between preclinical and clinical insights into age-related cognitive decline

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Neural Regeneration Research 2025年第8期20卷 2321-2322页

作者： david VC Brito Clévio Nóbrega Algarve Biomedical Center-Research Institute(ABC-RI) Campus GambelasFaroPortugal Algarve Biomedical Center-(ABC) Campus GambelasFaroPortugal Faculty of Medicine and Biomedical Sciences(FMCB) University of AlgarveGambelas CampusFaroPortugal

With people living longer,the societal impact of age-related cognitive decline is becoming more pronounced(Crimmins,2015).Thus,it is increasingly important to comprehend the cognitive shifts linked to aging-whether th... 详细信息

关键词： bridges becoming insight

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Molecular Screening of Rice Cultivated in Benin for the Identification of Xanthomonas oryzae Pv. oryzae and Bacterial Leaf Blight Resistance Genes

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Advances in Bioscience and Biotechnology 2023年第12期14卷 514-533页

作者： Chimène Nadège Mahoussi Nanoukon koffi david Montcho Hambada Antoine Abel Missihoun Kéllya Laurinzo Déguénon Bignon Meyrix Pamela Franzel Loumédjinon Bana Wêtè Déré Félicité Bio Emilienne Zinsou Réel Gael Fael Houngbélagnon Amed Sèmèvo Havivi Lamine Baba-Moussa Lambert Gustave Djédatin Laboratory of Molecular Biology and Bioinformatics Applied to Genomics National School of Applied Biosciences and Biotechnolo-gies National University of Science Technology Engineering and Mathematics Dassa-Zoumè Benin Laboratory of Molecular Biology and Bioinformatics Applied to Genomics National School of Applied Biosciences and Biotechnologies National University of Science Technology Engineering and Mathematics Dassa-Zoumè Benin Laboratory of Plant Horticultural and Forestry Sciences National University of Agriculture Kétou Benin Laboratory of Molécular Genetics and Genome Analysis Department of Genetics and Biotechnology Faculty of Science and Technology (FAST) University of Abomey-Calavi Cotonou Benin Laboratory of Biology and Molecular Typing in Microbiology Department of Biochemistry and Cell Biology University of Abomey-Calavi Abomey-Calavi Benin

One of the most devastating diseases of rice worldwide is bacterial blight (BLB) caused by Xanthomonas oryzae pv. Oryzae (Xoo). In Benin, Xoo was first described in 2013 on wild rice Oryzae longistaminata. So far, no study has been done on Beninese Xoo strains. We do not know whether the pathogen has already passed into the rice varieties grown, or if they are exposed to other bacteria. Whereas the use of resistant varieties, carrying resistance genes, is the only highly effective and environmentally friendly way to control this disease, no information is available on these Xoo resistance genes in rice varieties grown in Benin apart from the one we recently. This study aims to identify Beninese Xoo strains, causing BLB and screen rice varieties grown in Benin for the main resistance genes. Diseased rice leaves showing typical symptoms of fire blight collected from different rice fields in the three phytogeographic areas of Benin were analyzed by PCR for Xoo-specific sequence identification. Furthermore, seventy-five collected rice accessions were screened to identify xa5, Xa7, xa13, and Xa21 resistance genes to Xoo. The results reveal that Xanthomonas oryzae was identified in two fields in Banikouara and one in Malanville. On the other hand, Sphingomonas sp. has been identified in several other rice fields in Benin. Forty-seven of seventy-five rice accessions examined (62.66%) carried Xoo resistance genes with 3 (4%) and 40 (53.33%) of xa5 and Xa21 respectively. None of the accessions had either Xa7 or xa13 resistance genes. Three accessions possess both xa5 and Xa21 genes. Isogenic lines IRBB60 and IRBB21, supposed to be a positive control, presented a Xoo sensitivity allele. These results indicate that Xoo has moved from the wild rice variety to the cultivated variety in northern Benin and varietal improvement programs must be implemented with varieties having several resistance genes for the efficient response against a possible BLB pandemic in Benin.

关键词： Bacterial Blight Xanthomonas oryzae Pv. oryzae Molecular Characterization Resistance Genes

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Women in visual neural regeneration research

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Neural Regeneration Research 2025年第2期20卷 489-490页

作者： Tonia S.Rex david J.Calkins Vanderbilt Eye Institute Vanderbilt University Medical CenterNashvilleTNUSA

The year 2024 marks the 60^(th)anniversary of Title IX and 25 years since the New York Times revealed bias against female faculty members at the Massachusetts Institute of *** take an opportunity here to examine the state of gender bias in a relatively new yet already prominent field,neural regeneration in the visual system,for which there is a well-defined context useful for this *** National Eye Institute(NEI)provided the first round of research funding for its Audacious Goals Initiative(AGI)on visual neural regeneration in 2013 and the last round in ***,we focus on this *** sources included PubMed,the National Science Foundation(NSF),the NEI,the Blue Ridge Institute for Medical Research and data from the major professional organization for eye and vision research,the Association for Research in Vision and Ophthalmology(ARVO).

关键词： neural visual Times

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Critical review of the impact of cover crops on soil properties

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International Soil and Water Conservation Research 2022年第3期10卷 343-354页

作者： Komlan Koudahe Samuel CAllen koffi Djaman Biological and Agricultural Engineering Department Kansas State University1016 Seaton Hall920 N.Martin Luther King Jr.DriveManhattanKS66506USA Department of Plant and Environmental Sciences New Mexico State UniversityAgricultural Science Center at FarmingtonP.O.Box 1018FarmingtonNM87499USA

Grasses as well as leguminous and non-leguminous broadleaves are the major categories of commonly grown cover crops *** review focuses on the contribution of cover crops to soil *** review first considers the single and mixed cover crops and shows that grass species are desirable for their decay and ability to provide substantial soil cover,broadleaf species are used for their quick decomposition and capacity of releasing residues into the soil,while the leguminous species are used for their ability to fix atmospheric ***,the impacts of cover crops on soil health are *** cover crops into conventional cropping systems may reduce soil bulk density,improve soil structure and hydraulic properties to facilitate increased water infiltration and *** residue additions from cover crops may enhance soil organic C and N accretion as well as increase availability of P,K,Ca,Fe and Mg in some soil types under certain climatic ***,cover crops may provide a better condition for microbial activity,abundance,and ***,the review shows that through proper management,cover crops may be utilized as an essential component of soil conservation practices for enhanced soil ***,further investigation is necessary to determine cover crop effects in additional cropping systems and climatic zones as well as the long-term effects of cover crops on soil properties,subsequent crop yield,and overall cropping system *** review is an important source of information for crop growers,crop management institutions,universities,and crop consultants for sustainable agricultural production.

关键词： Cover crops Soil properties Grasses Leguminous

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Microbiological and chemical hazards of commercial attieke (a fermented cassava product) produced in the south of Côte d’Ivoire

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Food Quality and Safety 2019年第3期3卷 187-190页

作者： Kouamé Kohi Alfred Bouatenin koffi Maizan Jean Pau Djeni N’Dede Théodore Dje koffi Marcellin Department of Food Sciences and Technology Laboratory of Biotechnology and food MicrobiologyUniversity of Nangui AbrogouaAbidjanCôte d’Ivoire Food Security Research Group Centre Suisse de Recherche ScientifiqueAbidjanCote d’Ivoire

Objectives:Information on the distribution and presence of microbiology and chemical hazard of commercial attieke(a fermented cassava product)produced in the south of Côte d’Ivoire were *** and Methods:Microbiological analyses and chemical were carried out,which included the total viable bacteria,Staphylococcus aureus,Salmonella and Bacillus spores,heavy metal(pb,Cd,Mn,Fe,Cu,and Cr).Results and Conclusions:The results revealed that the viable bacteria counts ranged from in all of *** aureus counts in the samples were comprised between(1.8±0.4)10^(2)(Jacqueville localitie)and(4.3±1.8)10^(3)(Abidjan localitie).While that of Bacillus cereus was ranged from(1.1±0.9)10^(2)(Adzopélocalitie)and(5.1±3.2)10^(2)(Abidjan localitie).Salmonella *** not *** levels of Pb in all samples were between 2.2±0.1 mg/kg(Grand-lahou localitie)and 4.5 mg/kg±0.15(Abidjan localitie)while the Cd levels of the samples varied between 0.02±0.1 mg/kg(Adzopélocalitie)and 0.07±0.1 mg/kg(Divo localitie).The levels of Cr in the samples were comprised between 0.1±0.03 mg/kg(Adzopélocalitie)and 0.95±0.1 mg/kg(Abidjan localitie)while Fe(7.3±1.5 mg/kg)and Cu(1.7±0.2 mg/kg)levels were the highest,respectively in Sikensi and Grand-Lahou *** from Divo localitie contained high amounts of Mn(1.6±0.1 mg/kg).The occurrence of some microbiological and chemical hazard that commercial attieke collected in Cote d’Ivoire may act as a reservoir of pathogenic micro-organisms and heavy metal for human.

关键词： attieke heavy metal microbiogical and chemical hazard

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Alternate phenotype–genotype selection for developing superior high-yielding irrigated rice lines

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The Crop Journal 2018年第2期6卷 191-201页

作者： Yonnelle Dea Moukoumbi Raafat El-Namaky koffi Djaman Daouda Mbodj Baboucarr Manneh Irrigated Rice Breeding Unit Africa Rice Center(Africa Rice)Sahel Regional StationBP 96 Saint LouisSenegal National Institute of Agricultural Research Gros bouquetPMB 16169LibrevilleGabon Rice Research&Training Center(RRTC) 33717 Sakha Kafr SheikhEgypt

Increase grain yield potential is one of the most important objectives of any cereal crop breeding program. To efficiently develop superior rice lines by the introgression of favorable alleles for yield and yield component traits, a strategy of alternate phenotype–genotype selection was used. The present study aimed to(i) investigate the allelic diversity of loci associated with major yield-component traits and(ii) phenotype and genotype advanced populations derived from crosses between NERICA-L-20 and Giza178 for yield component traits using agro-morphological descriptors and GRi SP polymorphic markers to select superior high-yielding rice lines. A total of 100 F2:3 progeny were selected from 1000 F2 plants and genotyped with 16 polymorphic markers linked to four major yield-component traits. Four promising F2:3 lines(ARS 563–14, ARS 563–62, ARS 563–286, and ARS 563–41)bearing combinations of desirable alleles were selected. A selected set of 20 F2:4 lines showed moderate to high heritability for all target traits. Fourteen F2:5 lines derived from ARS 563–14 and 17 F2:5 from ARS 563–286 families were evaluated in preliminary trials to estimate yield gain. The three top lines, ARS 563–286–16-1-1, ARS 563–286–5-1-1, and ARS563–14–10-1-1, showed an increase of more than 10% grain yield over the best check, Sahel108, which is widely cultivated in the Senegal River valley. The 16 markers linked to the target yield component traits can be used to fast-track breeding programs targeting rice productivity.

关键词： Marker Rice Pedigree selection Yield

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