Aboubacry Kane

• Cheikh Anta Diop University

Arbuscular mycorrhizal fungi (AMF) enhance the uptake of water and nutrients by host plants. In this study, we examined the response of six rice varieties from two ecotypes (three irrigated and three rainfed upland varieties) to AMF inoculation at five fertilizer levels, under continuous flooding (CF) and alternate wetting and drying (AWD) irrigati...

Introduction Long-term fertilization affects bacterial, archaeal and fungal communities composition Soil microorganisms play a major role in maintaining soil health and productivity. Here, we examined the impact of two long-term fertility experiments (LTFE) carried out over a period of 25 years on soil microbial community in intensive rice-based ir...

Rhizosphere microorganisms, particularly arbuscular mycorrhizal fungi (AMF), play a vital role in enhancing sustainable maize production. However, uncertainty persist regarding the influence of climate variables and soil properties on mycorrhizal colonization (MC) of maize and the abundance of AM fungal spores in the field. This study aimed to expl...

In plant roots, arbuscular mycorrhizal fungi (AMF) are the most prevalent microsymbionts, and thereby provide many key ecosystem services to natural and agricultural ecosystems. Despite AMF’s significance for the environment and the economy, little is known about the mycorrhizal inoculum potential and diversity of AMF associated with orphan African...

Arbuscular mycorrhizal fungi (AMF) provide host plants with water and nutrients. Here, we investigated the response of six rice varieties from two ecotypes (three irrigated and three rainfed upland varieties) to inoculation at five fertilizer levels, under continuous flooding (CF) and alternate wetting and drying (AWD) irrigation in field condition...

Growing awareness of the environmental impact of intensive agriculture has prompted a quest for more sustainable approaches. The most promising alternatives include the application of organic waste products (OWPs), as well as biofertilizers containing local beneficial microorganisms (BMs) on cultivated soils. This study was designed to assess the e...

Background Rhizosphere microbial communities are important components of the soil-plant continuum in paddy field ecosystems. These rhizosphere communities contribute to nutrient cycling and rice productivity. The use of fertilizers is a common agricultural practice in rice paddy fields. However, the long-term impact of the fertilizers usage on the...

Rhizosphere microbial communities are important components of the soil-plant-atmosphere continuum in paddy field ecosystems where they contribute to nutrient cycling and rice productivity. However, the rhizosphere microbial sensitivity to anthropic soil disturbance across plant growth stages remains little investigated. Here, we tracked the effects...

The semi-arid Sahelian region of Africa, characterized by its deleterious agro-climatic conditions, is also subject to agricultural overexploitation to support human and livestock food. This situation has strongly accentuated the continuous degradation of arable land. However, green biotechnologies are often proposed to promote more sustainable agr...

RESUME La symbiose mycorhizienne à arbuscules est une interaction mutualiste qui implique plus de 80 % des végétaux supérieurs et des champignons du sol appartenant au phylum des Glomeromycota. L'exploitation de cette symbiose qui permet à de nombreuses espèces végétales d'améliorer leur nutrition hydrominérale (eau et phosphore principalement) pou...

Fungal communities associated with roots play a key role in nutrient uptake and in mitigating the abiotic and biotic stress of their host. In this study, we characterized the roots mycobiome of wild and cultivated pearl millet [ Pennisetum glaucum (L.) R. Br., synonym: Cenchrus americanus (L.) Morrone] in three agro-ecological areas of Senegal foll...

Millet is a subsistence cereal farmed on the world, it occupies the 6th position after maize, rice, corn, barley and sorghum. Africa is the only region in the world where the millet production rises. Pennisetum millet is farmed in southern Sahara as well as the dry regions of Eastern and southern Africa. In Senegal, millet is the first culture in t...

Bambara groundnut (Vigna subterranea) is a drought-tolerant legume in sub-Saharan Africa and is well adapted to marginal agricultural lands. Its seeds have high nutritional value, owing to their protein, fat, fiber, carbohydrate, vitamin, and mineral element contents. Nevertheless, this crop is still underutilized, not well-known and has almost bee...

Arbuscular mycorrhizal (AM) fungi constitute promising biofertilizers for the deployment of a sustainable agriculture. However, the evaluation of mycorrhizal benefits in the field is poorly documented, notably in fruit tree orchards, and concerns exclusively growth performance and nutrition. Here, we evaluated the persistence of beneficial effects...

Pearl millet (Pennisetumglaucum (L.) R. Br) is a cereal grown in the driest tropical and subtropical regions of Africa and Asia. Thanks to its strong capacity to adapt to the dry tropical climate and low fertility soils, millet plays an important role in the food security of local populations in these regions. It is able to establish a mycorrhizal...

Ce travail porte sur l'usage des pesticides dans la zone des Niayes qui fournit presque la quasi-totalité des produits maraîchers au Sénégal. Les maraîchers de cette zone ont de plus en plus recours à l'utilisation des pesticides pour lutter contre les ennemis des cultures. Toutefois, le recourt aux pesticides chimiques soulève de redoutables quest...

Au Sénégal, peu d'études sur le plan planctonique ont été réalisées pour l'évaluation de l'efficacité des Aires Marines Protégées. Dans cette perspective, la caractérisation de la flore phytoplanctonique et sa distribution spatio-temporelle à l'intérieur et à l'extérieur de l'AMP de Bamboung a été réalisée en avril et en septembre 2016. Des prélève...

Here, we assessed the relative influence of wheat genotype, agricultural practices (conventional vs organic) and soil type on the rhizosphere microbiome. We characterized the prokaryotic (archaea, bacteria) and eukaryotic (fungi, protists) communities in soils from four different countries (Cameroon, France, Italy, Senegal) and determined if a rhiz...

The authors of the above-mentioned published article inadvertently omitted Dirk Redecker, Dioumacor Fall and Diaminatou Sanogo from the list of authors. The names and their affiliations presented in this paper.

Here, we assessed the relative influence of wheat genotype, agricultural practices (conventional vs organic) and soil type on the rhizosphere microbiome. We characterized the prokaryotic (archaea, bacteria) and eukaryotic (fungi, protists) communities in soils from four different countries (Cameroon, France, Italy, Senegal) and determined if a rhiz...

Pearl millet is able to withstand dry and hot conditions and plays an important role for food security in arid and semi-arid areas of Africa and India. However, low soil fertility and drought constrain pearl millet yield. One target to address these constraints through agricultural practices or breeding is root system architecture. In this study, i...

Pearl millet, unlike other cereals, is able to withstand dry and hot conditions and plays an important role for food security in arid and semi-arid areas of Africa and India. However, low soil fertility and drought constrain pearl millet yield. One of the main targets to address these constraints through agricultural practices or breeding is root s...

A wide program of fruit tree planting, notably jujube trees, has been implemented in the framework of the pan-African Great Green Wall (GGW) project to improve food security in arid and semiarid regions. However, the success of such initiatives is highly limited by a low tree growth and high tree mortality rates due to transplant shocks from tree n...

Arbuscular mycorrhizal fungi (AMF) play a major role as biofertilizer for sustainable agriculture. Nevertheless, it is still poorly documented whether inoculated AMF can successfully establish in field soils as exotic AMF and improve plant growth and productivity. Further, the fate of an exogenous inoculum is still poorly understood. Here, we pre-i...

Crop inoculation with beneficial soil microbes has been proposed as an sustainable alternative to agro-chemicals. However, use of inoculation requires selecting optimal combinations of crop varieties and associated microbes to increase the efficiency of production systems. We previously showed that rice response to microbial inoculation was depende...

The aim of this study was to survey the abundance and genetic diversity of legume-nodulating rhizobia (LNR) in the rhizosphere of a salt-tolerant grass, Sporobolus robustus Kunth, in the dry and rainy seasons along a salinity gradient, and to test their effectiveness on Prosopis juliflora (SW.) DC and Vachellia seyal (Del.) P.J.H. Hurter seedlings....

Rice is one of the most consumed crop around the globe and its production needs to be increased in a context of climate change and water scarcity. Rice roots, as most land plants, can establish symbiotic association with arbuscular mycorrhizal fungi (AMF). Rice has emerged, in the past decade, as a model to study the molecular determinants of AM sy...

Senegalese farmers have often recourse to local plants in the post-harvest management. The groundnut storage methods have been assessed by surveying 180 farmers in the Groundnut Basin (Fatick, Kaolack and Kaffrine). Three plants (Khaya senegalensis, Azadirachta indica, Eucalyptus camaldulensis) were identified as insecticidal plants. The levels of...

Exotic trees are often planted to recover degraded lands. Inoculation with mycorrhizal fungi can improve their survival. Plant growth is partly dependent on the strain used, but little attention has been paid to the selection of mycorrhizal fungi. The aim of this study was to determine whether the growth of Casuarina equisetifolia L. (Johnson) is a...

Introduction - Many of species of Ziziphus are underutilized crops despite their potential interests in agroforestry systems. Except for Ziziphus mauritiana, the effectiveness of arbuscular mycorrhizal fungi (AMF) on growth and mineral nutrition of Ziziphus spp. is not known. The aim of our study was to evaluate the mycorrhizal dependency (MD) of Z...

The overuse of agricultural chemicals such as fertilizer and pesticides aimed at increasing crop yield results in environmental damage, particularly in the Sahelian zone where soils are fragile. Crop inoculation with beneficial soil microbes appears as a good alternative for reducing agricultural chemical needs, especially for small farmers. This,...

Root length and frequency of colonization of inoculated plants of O. sativa var. Sahel 202 for the 1st and 2nd-year trials. In each column, means followed by the same letter are not significantly different at P≤0.05. (PDF)

Height of non-inoculated and inoculated plants of O. sativa Sahel 202. A single microbial strain (AMF or PGPR, A), two strains (B), and 3 and 4 strains (C), were used in the 1st year (A1, B1 and C1) and 2nd year (A2, B2 and C2) trials. Ri: Rhizophagus irregularis; Ga: Glomus aggregatum; ORS 278: Bradyrhizobium sp. ORS 278; and ORS 3454: Leifsonia s...

Student’s t-test for the ln (x +10) transformed values of agronomic traits in rice plants at variety level. AM: inoculated with AMF and NM: non-inoculated. Abbreviations associated to the variety names indicate the rice ecotype (Upl: Upland, Irr: Irrigated, Rll: Rainfed lowland). (PDF)

ANOVA for the ln (x +10) transformed values of agronomic traits in rice plants at ecotype level. AMF inoculation (inoculated and non-inoculated), ecotype (upland, irrigated and rainfed lowland) and year (1st and 2nd-year trial). (PDF)

ANOVA for the ln (x +10) transformed values of agronomic traits in rice plants at variety level. AMF inoculation (inoculated and non-inoculated), variety (each of the 8 varieties tested) and year (1st and 2nd-year trial). (PDF)

Collar section growth curves of non-inoculated and inoculated plants of O. sativa Sahel 202. A single microbial strain (AMF or PGPR, D1 and D2), two strains (E1 and E2), and 3 and 4 strains (F1 and F2), were used in the 1st year (D1, E1 and F1) and 2nd year (D2, E2 and F2) trials. Ri: Rhizophagus irregularis; Ga: Glomus aggregatum; ORS 278: Bradyrh...

Student’s t-test for the ln (x +10) transformed values of agronomic traits in rice plants at ecotype level. AM: inoculated with AMF and NM: non-inoculated. (PDF)

Seedlings of S. robustus were exposed to increasing NaCl concentrations (0, 50, 100, 150, 200, 250, and 300 mM) for 50, 100, and 150 days, in greenhouse conditions. Total dry weight and salt tolerance index decreased gradually with increasing NaCl concentrations. The optimum growth of S. robustus (4.12 to 5.25 g · plant⁻¹) was obtained between 0 an...

Ziziphus mauritiana Lam., commonly known as jujube, is an important multipurpose fruit tree (e.g. fruits, fodder, medicine) for local inhabitants in the Sahel. Indian cultivars were introduced in its zone because of their precocity in fruiting and the larger size compared to the local ones. Furthermore, the orchards in its zone were found to be def...

The results got from bio-trial on the larva and non-sexed full-grown weevils with different treatments (comparison between vegetable powders of three plants in the presence of 2 witnesses) have showed a weak mortality in the course of the first initial contact hours with larva and weevils. During the time, the chemical referential product, Percal 1...

La production de riz au Sénégal fait face à des contraintes liées aux changements climatiques telles que le déficit hydrique. A cela s’ajoute la baisse de la fertilité des sols consécutive aux prélèvements de grandes quantités de nutriments des sols. Les effets isolés ou conjugués de ces contraintes limitent la productivité des écosystèmes rizicole...

Arbuscular mycorrhizal symbiosis is an important plant root–fungal partnership/interaction that affects the growth response of crops. We have investigated the molecular diversity of arbuscular mycorrhizal fungi (AMF) colonizing cowpea roots and the associated rhizosphere soil to test the hypothesis that community diversity in rhizosphere soil is si...

The aim of our work was to assess the effect of inoculation with three arbuscular mycorrhizal fungi (AMF) ( Rhizoglomus aggregatum (N.C. Schenck and G.S. Sm.) Sieverd., G.A. Silva and Oeh., Funneliformis mosseae (T.H. Nicolson and Gerd.) C. Walker and A. Schussler. and Rhizoglomus intraradices (N.C. Schenck and G.S. Sm.) Sieverd., G.A. Silva and Oe...

Le niébé vit en symbiose avec des champignons mycorhiziens arbusculaires (CMA) et rhizobiums du sol susceptibles d’améliorer sa nutrition hydrominérale et sa croissance. Cette étude avait pour objectif d’évaluer la réponse du niébé (variété KVX 396-4-5-2D) à l’inoculation rhizobienne et/ou mycorhizienne. KVX 396-4-5-2D (KVX) a été inoculée en serre...

Aims The focus of the study was to determine the symbiotic and growth response of three Senegalia Senegal (Syn. Acacia Senegal, gum arabic tree) provenances, namely Dahra (Senegal), Tera (Niger) and Makueni (Kenya) to inoculation with selected S. Senegal-nodulating rhizobia in soils from Dahra and Goudiry regions of Senegal, representing typical so...

The global biogeography of microorganisms remains largely unknown, in contrast to the well-studied diversity patterns of macroorganisms. We used arbuscular mycorrhizal (AM) fungus DNA from 1014 plant-root samples collected worldwide to determine the global distribution of these plant symbionts. We found that AM fungal communities reflected local en...

Wheat (Triticum aestivum L. subsp. aestivum) is one of the most important sources for food, animal fodder and industrial raw materials. However these past years, world-wide wheat production has not met demand, largely due to the adverse effects of climate change, soil salinization, and limited water availability. Here, we present the project MIC-CE...

Objectif : Le mil est la premiere culture vivriere au Senegal. Il joue un role capital dans la vie des populations rurales qui en dependent pour leur survie (STAT/FAO/SENEGAL, 2010). Il est cultive sur plus 60% des terres arables. Les varietes locales etaient les plus utilisees mais depuis quelques annees leur survie est menacee par l'introduction...

The objective of this study was to characterize the diversity of arbuscular mycorrhizal fungal (AMF) communities colonizing the roots of Vigna unguiculata (L.) plants cultivated in two different sites in Senegal. Roots of cowpea plants and soil samples were collected from two fields (Ngothie and Diokoul) in the rural community of Dya (Senegal). Mic...

Ce travail constitue une première étude de la flore des systèmes agropastoraux dans la communauté rurale de Mlomp. Cette étude est réalisée par la méthode des relevés phytosociologiques. Elle a été entreprise pour déterminer la structure de la flore (spectres taxonomique, biologique et chorologique) et l’influence du système d’exploitation des terr...

The response of cowpea [Vigna unguiculata (Walp.(L.)] to inoculation with symbiotic microorganisms (arbuscular mycorrhizal fungus and rhizobium) was investigated on cultivated vertisoils (known locally as Dek) and arenosoils (known locally as Dior) in three geographic sites in Senegal. On the basis of soil physico-chemical characteristics, of most...

Man-made forest systems are usually focused upon the trees and are defined mainly in relation to their capacity to produce timber and prevent catastrophic events such as damage by wind. In recent years, however, there has been a growing awareness amongst plant ecologists and soil microbial ecologists that understanding the connectivity between thei...

Acacia senegal (L.) Willd. is a multipurpose legume that is economically and ecologically important in Sahelian areas, especially in Senegal. It has long been used for arabic gum production. However, drought and overexploitation lead to decreased soil fertility and tree productivity. An experiment was conducted to examine the response of A. senegal...

Acacia senegal and Acacia seyal are small, deciduous legume trees, most highly valued for nitrogen fixation and for the production of gum arabic, a commodity of international trade since ancient times. Symbiotic nitrogen fixation by legumes represents the main natural input of atmospheric N2 into ecosystems which may ultimately benefit all organism...

Objectifs : Au Sénégal, la production de mil est faible à cause de plusieurs facteurs parmi lesquels la pauvreté des sols, la pression des adventices. Ce présent travail envisage l’utilisation des cultures associées (mil et niébé) pour lutter contre les adventices et améliorer à la fois la qualité des sols et la production agricole. Il est mené dan...

L’arachide est cultivée par plus de 100 pays dans le monde. Les principaux producteurs sont la Chine et l’Inde qui fournissent plus de 60 % de la production mondiale. L’Afrique assure 25 % de la production avec le Nigéria, le Sénégal et le Soudan principalement. Au Sénégal, dans les années 1960, la culture de l’arachide s’était développée comme cul...

Distribution and diversity of rhizobial strains associated with Acacia senegal (L.) Willd. in relation to seed provenances in soils from arid (Dahra) and semiarid (Goudiry) zones of Senegal were investigated. PCR-RFLP performed on 16S-23S rDNA intergenic spacer (IGS) of nodule crude extracts revealed a high genetic diversity of rhizobial strains, w...

Diop et al. J. Appl. Biosci. 2013. Impacts des conditions pédoclimatiques et du mode cultural sur la réponse du niébé à l'inoculation endomycorhizienne avec Rhizophagus irregularis 5465 Impacts des conditions pédoclimatiques et du mode cultural sur la réponse du niébé (Vigna unguiculata L. Walp.) à l'inoculation endomycorhizienne avec Rhizophagus i...

The benefits of inoculation with six arbuscular mycorrhizal fungi (AMF) isolates (Glomus aggregatum, G. fasciculatum, G. intraradices, G. manihotis, G. mosseae, and G. verriculosum) were investigated on seedlings of Acacia senegal (L.) Willd., a multipurpose tree legume highly valued for arabic gum production. Mycorrhizal root colonization, plant g...

Assessment of diversity and understanding factors underlying species distribution are fundamental themes in ecology. However, the diversity of native arbuscular mycorrhizal fungi (AMF) species in African tropical agro-ecosystems remains weakly known. This research was carried out to assess the morpho-logical diversity of indigenous AMF species asso...

La culture du Niebe [Vigna unguiculata (L.) Walp.] en Afrique de l’Ouest est marquee par l’instabilite de ses rendements et sa faible production liee a la pauvrete des sols, a la faiblesse de la pluviometrie et aux contraintes parasitaires. Dans cette etude, nous nous sommes interesses a la reponse a l’inoculation mycorhizienne de quatre varietes d...

Several fast-growing and multipurpose tree species such as exotic and valuable native species have been widely used in West Africa. These man-made forest plantations usually focused upon the trees and are defined mainly in relation to their capacity to produce timber and prevent catastrophic events such as damage by wind. In recent years, however,...

La salinisation des terres est un problème environnemental majeur et croissant, particulièrement dans les zones arides et semi-arides du monde. Les techniques d’inoculation microbienne contrôlée avec des espèces tolérantes au sel pourraient être exploitées pour la réhabilitation des sols affectés par la salinité. A l’effet de montrer l’importance d...

Acacia senegal is a multipurpose legume that is economically and ecologically important in Sahelian areas. The effects of arbuscular mycorrhizal fungal (AMF) inoculum (M) individually and in combination with rhizobia (R) and Pseudomonas fluorescens (P f) were investigated on the growth and nutrition of A. senegal seedlings. In glasshouse conditions...

The responses of the soil microbial community features associated to the legume tree Acacia senegal (L.) Willd. including both arbuscular mycorrhizal fungal (AMF) diversity and soil bacterial functions, were investigated under contrasting environmental conditions. Soil samples were collected during dry and rainy seasons in two contrasting rainfall...

Several fast-growing and multipurpose tree species have been widely used in West Africa to both reverse the tendency of land degradation and restore soil productivity. Although beneficial effects have been reported on soil stabilization, there still remains a lack of information about their impact on soil microorganisms. Our investigation has been...

Rhizobial inoculation has a positive impact on plants growth; however, there is little information about its effect on soil microbial communities and their activity in the rhizosphere. It was therefore necessary to test the effect of inoculation of Acacia senegal (L.) Willd. seedlings with selected rhizobia on plant growth, structure and diversity...

Several fast-growing and multipurpose trees such as exotic and valuable native species have been widely used in West Africa to reverse the tendency of massive degradation of plant cover and restore soil productivity. Although benefic effects have been reported on soil stabilization, a lack of information about their impact on soil symbiotic microor...

Exotic and native tree species have been widely used in the West Africa to reverse the tendency of land degradation. Although benefic effects have been reported on soil stabilization, a lack of information about their impact on soil symbiotic microorganisms still remains. This investigation has been carried out in a semiarid Sahel region and aimed...