Said Amrani

Background Respiratory tract infections are a common health issue, driving interest in preventive strategies like nutritional supplements, while evidence on their usage and effectiveness remains limited. In this context, social media platforms, particularly X (formerly Twitter), provide a unique opportunity to gather large-scale public health-relat...

The study of bacterial diversity in Zea mays L. cultivated in the Saharan oases of El Minea, Algeria, revealed that microbial diversity was higher in bulk soil compared to the rhizosphere and endosphere, although the number of bacterial phyla was similar among the three compartments. The main bacterial phyla identified were Proteobacteria, Bacteroi...

Background The development of digital technologies and the evolution of open innovation approaches have enabled the creation of diverse virtual organizations and enterprises coordinating their activities primarily online. The open innovation platform titled “International Natural Product Sciences Taskforce” (INPST) was established in 2018, to bring...

Seaward, M. R. D. & Amrani, S. 2022. Checklist of lichens and lichenicolous fungi of Morocco.-Herzogia 35: 564-612. The lichen flora of Morocco has been the subject of two relatively recent checklists; that of Egea published in 1996 included 1,100 taxa, which was increased to 1,211 in 2013 by Ajaj and his collaborators. As a result of recent fiel...

As part of the development of an ecological solution to eliminate azo dyes present in the effluents of textile factories, we have isolated from different soils four Streptomyces strains with high degradation potential against Evans blue (EB). These strains affiliated to Streptomyces maritimus, S. mutabilis, S. ardesiacus and S. sp can also degrade...

Bakelli et al.: Endophytic bacteria of Common tamarisk (Tamarix gallica L.) and Alkali seepweed (Suaeda fruticosa (L.) Forssk.) as potential biocontrol and plant growth-promoting agents in arid environments-3073-APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 20(4):3073-3098. Abstract. In this study, fifty-two endophytic halotolerant bacteria from Tamar...

The Bulletin of the Society of Natural History of North Africa regularly published between 1909 and the 1970s, nearly 1800 articles dealing mainly with the fauna and flora of the countries of North Africa. The 67 volumes of this review constitute a considerable source of information for the knowledge of the biodiversity of North Africa. Unfortunate...

Plants harbor in and at their roots bacterial microbiomes that contribute to their health and fitness. The microbiome composition is controlled by the environment and plant genotype. Previously, it was shown that the plant genotype-dependent dissimilarity of root microbiome composition of different species becomes smaller under drought stress. Howe...

A survey conducted on 2,304 trees in 96 Casuarina stands across Algeria indicates that they are represented by five species: Casuarina cristata Miq., C. cunninghamiana Miq., C. equisetifolia L., C. glauca Sieber ex Spreng. and C. junghuhniana Miq. Two species, C. cunninghamiana and C. glauca, were the most common – the former occurring more often i...

Malgré l’importance prise par les Casuarina en Algérie depuis leur introduction au début du 19e siècle, le nombre d’espèces aujourd’hui présentes dans le pays, leur identité, leur distribution ainsi que leur statut symbiotique sont encore largement méconnus. Une étude menée sur 2 304 arbres dans 96 peuplements répartis dans toute l’Algérie indique...

Phragmites communis L. is a halophytic plant that can withstand harsh environmental conditions such as salinity. In the present study, we isolated a bacterium associated with the rhizosphere of Phragmites communis L. Based on morphological and biochemical as well as MALDI-TOF and 16S rRNA sequencing results, the strain S6 was identified as Klebsiel...

Phragmites communis L. is a halophytic plant that can withstand harsh environmental conditions such as salinity. In the present study, we isolated a bacterium associated with the rhizosphere of Phragmites communis L. Based on morphological and biochemical as well as MALDI-TOF and 16S rRNA sequencing results, the strain S6 was identified as Klebsiel...

Although lichens have been the subject of renewed interest for many countries worldwide, this has not been the case for Tunisia where much of the territory continues to be largely under-explored. In order to promote lichenological research in Tunisia, a checklist was published in 1996 together with an historical overview and a bibliography compiled...

Describing and conserving ecological interactions woven into ecosystems is one of the great challenges of the 21 st century. Here, we present a unique dataset compiling the biotic interactions between two ecologically and economically important taxa: ground beetles (Coleoptera: Carabidae) and fungi. The resulting dataset contains the carabid-fungus...

Cette étude portant sur 27 souches de rhizobia associées à de jeunes plants d'Acacia ehrenbergiana prélevés à partir de 9 sites naturels au niveau du Sahara nous a permis de montrer que cette légumineuse est nodulée par les représentants de 3 genres de rhizobia. Il s'agit de genre Sinorhizobium, Rhizobium et Mesorhizobium. L'évaluation de l'effet d...

La présente étude porte sur la nature des rhizobia associés aux légumineuses du genre Hippocrepis qui compte une dizaine d’espèces en Algérie et pour laquelle très peu de travaux ont été jusqu’ici consacrés. Les résultats de nos investigations qui ont portés sur 26 plants représentant 8 espèces de ce genre et provenant de 17 localités du nord et du...

Our study aimed to determine the effect on barley (Hordeum vulgare L.) of adding potassium polyacrylate to a sandy soil under normal watering condition and drought. We focused on morphological and physiological characteristics of barley and its rhizosphere bacterial community structure using Illumina Miseq sequencing. It was found that under normal...

This fifth contribution to the checklist of Algerian fungi is dedicated to Dothideomycetes which comprise a highly diverse range of fungi characterized mainly by asci with double two wall layers (bitunicate asci) and often with fissitunicate dehiscence. By screening all available bibliographic sources and herbaria (fungaria) catalogues it was possi...

Erythrina corallodendron belonging to the genus Erythrina and the family Fabaceae is a tree growing in tropical and sub-tropical regions. The tree is mainly grown as an ornamental plant because of its nice orange flowers but is also considered as a medicinal plant. The aim of this study was to determine the causes of the limited germination rate of...

Frankia sp. strain B2 was isolated from Casuarina cunninghamiana nodules. Here, we report the 5.3-Mbp draft genome sequence of Frankia sp. strain B2 with a G+C content of 70.1 % and 4,663 candidate protein-encoding genes. Analysis of the genome revealed the presence of high numbers of secondary metabolic biosynthetic gene clusters.

A checklist is presented of ascomycetes belonging to class Sordariomycetes in Algeria. This group of fungi is represented in the country by at least 189 genera and 470 species. The list is based on bibliographical, thesis and herbaria online databases sources. This checklist is the first comprehensive species list fully dedicated to Algerian Sordar...

Our third contribution to the checklist of Algerian fungi is dedicated to Labouls (Laboulbeniales, Laboulbeniomycetes) an atypical and very diversified group of microscopic fungi that unsure their nutrition and/or dispersal by being insect ectoparasites. By screening all available bibliographic sources and herbaria catalogues it was possible to del...

This publication provides an updated checklist of Chromistan Fungal Analogues (CFA) in Algeria. This is a compilation of information on substrate and locality from where CFA fungi have been recorded. or original descriptions available. By screening all available bibliographic sources and herbaria (fungaria) catalogues it was possible to delineate 8...

Despite more than two centuries of almost uninterrupted studies of the Algerian lichen flora, its diversity, ecology and biogeography remain much under-explored. Following the publication of our historical overview of lichenological exploration of Algeria (1798-2013) and an annotated bibliography of 171 titles in 2015, it was thought necessary to p...

The Sahel region is subject of several controversies over the current trends of its ecosystems. Some consider that despite the rain recovery, this region remains in a regressive dynamics, while others consider that they are in re-greening, according to the studies using remote sensing. However, in North Africa, and more specifically in the Maghreb...

The immobilization of crude laccase from Trametes pubescens by glutaraldehyde crosslinking prior to entrapment into Ca-alginate beads increased the immobilization yield by 30% and reduced the leaking by 7-fold compared to the immobilization with no crosslinking. The performance of the newly developed biocatalyst to degrade Bisphenol A (BPA) from aq...

The immobilization of crude laccase from Trametes pubescens by glutaraldehyde crosslinking prior to entrapment into Ca-alginate beads increased the immobilization yield by 30% and reduced the leaking by 7-fold compared to the immobilization with no crosslinking. The performance of the newly developed biocatalyst to degrade Bisphenol A (BPA) from aq...

Informations on Algerian mycobiota are scattered through a wide array of journals, books, dissertations and the lack of comprehensive catalogs or checklists makes difficult to apprehend it diversity. By screening all available bibliographic sources and herbaria catalogues it was possible to delineate 98 species belonging to 31 genera and from which...

The electrochemical oxidation of the neonicotinoid pesticide thiamethoxam (TMX) on a boron-doped diamond (BDD) anode was investigated. The effect of several operating parameters such as supporting electrolyte (0.025-0.1 M Na2SO4, 0.1 M NaCl), current density (4–40 mA cm⁻²), TMX concentration (1–10 mg L⁻¹ of active ingredient in a commercial formula...

Acacia ehrenbergiana Hayne and Acacia seyal Del. are two desert trees of the Algerian Sahara that for a long time were confused. These two species present high potentials for desert areas rehabilitation therefore for successful seed germination and establishment three pre-germination treatments (manual scarification, boiling water and concentrat...

Malgré l’importance des représentants du genre Lotus en Algérie, leur statut symbiotique et la nature des rhizobia qui leurs sont associés sont méconnus. Cette étude portant sur 39 plants de Lotus appartenant à 15 espèces nous a permis de vérifier qu’ils sont tous nodulés et fixateurs d’azote et d’isoler à partir de leurs nodules 38 souches de bact...

Les Casuarinas en Algérie : identification, distribution et importance

Diversity and differences in root-microbiomes of Alfalfa and Barley in relation to water stress gradients in an Algerian oasis

Analysis of bacterial diversity of Endophytic bacteria associated with roots of Zygophyllum album : a pioneer desert species from El-Golea, Algeria

The Algerian halophilic areas have been subject to few studies, which remain fragmented. If their floristic, pedological and phytogeographical characterization begins to be better clarified, studies related to changes in the flora and vegetation along a salinity gradient are, however, much rarer. The aim of this present work was to survey, at least...

Diversité des légumineuses ligneuses introduites en Algérie et leur statut symbiotique

Biological and phytogeographical diversity for different levels of salinity in the region of Chott-Ech-Chergui (South-West of Algeria). The Algerian halophilic areas have been subject to few studies, which remain fragmented. If their floristic, pedological and phytogeographical characterization begins to be better clarified, studies related to cha...

Amrani S., Nacer A., Noureddine N.-E. & Seaward M. R. D.: Lichenological exploration of Algeria: historical overview and annotated bibliography, 1799–2013. — Willdenowia 45: 15–34. 2015. — Version of record first published online on 20 February 2015 ahead of inclusion in April 2015 issue; ISSN 1868-6397; © 2015 BGBM Berlin-Dahlem. DOI: http://dx.do...

The aim of this study was to evaluate the potential of a selected Pseudomonas aeruginosa strain (strain S8) isolated from an Algerian soil to degrade o-cresol in water. This strain was used to study the biodegradation of o-cresol in batch aerobic experiments under vari- able pH values, heavy metals ions (Zn2+ ,Cd2+ and Cu2+ ) and NaCl concentration...

Acacia ehrenbergiana Hayne (= Acacia flava (Forssk.) Schweinf.) (Fig. 1) has been recognized lately as an autochtonous species in Algeria (Manière et Celles) due to the confusion of it's representatives with those of Acacia seyal. Since that, it have been established that this species is beside A. tortilis subsp. raddiana (= A. raddiana) the most f...

Acacia tortilis subsp. raddiana (A. raddiana) is the most widespreal tree legume of the desertic areas of Algeria. As a well adapted species it constitutes a great potential for the afforestation/reforestation of these areas. Despite the considerable importance of this species, no studies have been so far performed on A. raddiana symbiotic rhizobia...

LAcacia tortilis (Forsskal) Hayne subsp. raddiana (Savi) Brenan [Acaciaraddiana Savi s. s.] est la lgumineuse ligneuse la plus rpandue dans les rgions dsertiques dAlgrie. En tant quespce bien adapte, elle offre un potentiel dintrt pour le boisement ou le reboisement de ces rgions. Sa capacit dtablir une symbiose fixatrice dazote avec les rhizobia c...

Cette étude sur la nodulation et la fixation symbiotique d'azote chez de jeunes plants d'Acacia saligna au niveau de neuf pépinières du nord et du sud de l'Algérie nous a permis d'établir que l'espèce est généralement nodulée et fixatrice d'azote. Cependant, la nodulation et le pouvoir fixateur d'azote des plants provenant des pépinières du nord se...

This study on the nodulation and symbiotic nitrogen fixation by Acacia saligna in nine nurseries from North and South areas of Algeria indicates that Acacia saligna is mostly nodulated and fix nitrogen. Therefore, nodulation and nitrogen fixation potential were clearly superior for plants from northern nurseries than those from southern ones. Symbi...

Twenty seven rhizobial strains associated with Acacia saligna grown in northern and southern Algeria were characterized, including generation time, host-range, the 16S rRNA gene and 16S-23S rRNA intergenic spacer restriction patterns, 16S rRNA gene sequence analysis and tolerance to salinity and drought. Cross inoculation tests indicated that 11 sl...

Cent quarante quatre plants d'Acacia saligna (Labbil.) Wendl recueils au niveau de douze pépinières du nord et du sud du pays se sont révélés dans leur grande majorité nodulés et fixateurs d'azote. Cette espèce introduite dans un passé relativement récent est donc capable de s'associer avec des souches de Rhizobia autochtones pour former une symbio...