Achbani el hassan

Achbani el hassan
French National Institute for Agriculture, Food, and Environment (INRAE) | INRAE · Phytiatrie

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71
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Publications

Publications (71)
Article
Full-text available
Bromusareannual herbaceous plants belonging to the Poaceae family. It’s about the weeds that infest cereals. The most harmful one is Bromus rigidus Roth.The purpose of this study is to find out the effect of different treatments on the germination and viability of ripgut brome. The first test in vitro germination was carried out on a collection, fr...
Article
Full-text available
Grapevine crown gall, caused by Allorhizobium vitis (A. vitis) and fire blight, caused by Erwinia amylovora (E. amylovora) of rosaceous plants, have been recognized as serious bacterial diseases and responsible for major crop losses in grapevine (Vitis vinifera L.), pear (Pyrus communis L.) and apple (Malus domestica Borkh.) worldwide. To develop a...
Article
Grapevine crown gall, caused by Allorhizobium vitis (A. vitis) and fire blight, caused by Erwinia amylovora (E. amylovora) of rosaceous plants, have been recognized as serious bacterial diseases and responsible for major crop losses in grapevine (Vitis vinifera L.), pear (Pyrus communis L.) and apple (Malus domestica Borkh.) worldwide. To develop a...
Article
Full-text available
This work aimed at evaluating the effect of compost to water ratio and nutrient additives on the compost tea (CT) quality and its efficacy on the maize growth and soil microbial activity and biomass as well as the colonization of maize roots with arbuscular mycorrhizal fungi (AMF). The CT were prepared at two ratios (1/5 and 1/10), and enriched wit...
Article
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Climate and trade changes are reshaping the cartographic distribution of lethal pervasive pathogens. Among serious emerging challenges is Xylella fastidiosa (Xf), a xylem-limited phytopath-ogenic bacterium that produces losses and damages to numerous crops of high economic and agro-nomic importance. Lately, this grave quarantine pathogen has expend...
Article
Full-text available
Date palm is the most important species of the palm family (Palmaceae), used to generate income for the local population. However, the growth of date palm in arid regions implies an abusive use of chemical fertilizers, which has harmful consequences on the environment and biological properties of the soil. These compounds are not optimally uptaken...
Article
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Pulicaria incisa (Lam) is a wild-growing plant in Morocco and has been traditionally used by farmers to control pests of stored grains. The present study was conducted to investigate the chemical composition and insecticidal effect of the essential oil of P. incisa against Sitophilus oryzae (L.) and Tribolium castaneum (Herbst.) by different method...
Article
Tafilalet is the largest oases in Morocco, but it is threatened by climatic and environmental stress like drought, soil degradation as well as plant diseases, in particular Fusarium wilt of date palm caused by Fusarium oxysporum f.sp albedinis (Foa). Soils are poor in terms of organic matter, nutrient concentrations and biological activity resultin...
Article
Full-text available
Tafilalet is the largest oases in Morocco, but it is threatened by climatic and environmental stress like drought, soil degradation as well as plant diseases, in particular Fusarium wilt of date palm caused by Fusarium oxysporum f.sp albedinis (Foa). Soils are poor in terms of organic matter, nutrient concentrations and biological activity resultin...
Article
Full-text available
Rapid, easy and direct DNA extraction protocols are required for use in routine analyses to detect plant pathogenic bacteria. For this purpose, five protocols for extracting bacterial DNA, which do not use toxic chemicals such as phenol and chloroform, were optimized for the detection of plant pathogenic bacteria quickly and directly from plant mat...
Article
Full-text available
Morocco belongs to the countries ranked at a high-risk level for entry, establishment, and spread of Xylella fastidiosa, which has recently re-emerged as a plant pathogen of global importance causing olive quick decline syndrome (OQDS). Symptomatic infection by X. fastidiosa leads to devastating diseases and important economic losses. To prevent su...
Article
This study aims to investigate the chemical composition and inhibitory effects of four essential oils from Moroccan medicinal and aromatic plants: Rosmarinus officinalis L., Satureja calamintha L., Lavandula stoechas L. and Citrus aurantium L. on Allorhizobium vitis strain S4 causal agent of crown gall of grapevine. The identification of compounds...
Article
Full-text available
This research aimed to study diversity among a collection of Rhizoctonia solani strains, isolated from many crops in Morocco, based on radial mycelial growth on potato dextrose agar (PDA) at different pH and temperature levels. The in vitro antifungal efficacy of essential oils (EOs) derived from aromatic and medicinal plants of Thymus vulgaris, Or...
Article
Full-text available
The ability of agriculture to continuously feed a growing world population depends essentially on the use of effective and sustainable strategies to control crop diseases. Currently used bacterial infection control strategies, involving antibiotics, pose a real threat to the environment and to human health, and are losing efficiency due to the appe...
Article
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The protection of agricultural crops and the preservation of the organoleptic and health qualities of food products represent a major challenge for the agricultural and agro-food industries. Essential oils have received greater attention as alternatives to replace the control strategies based on pesticides against phytopathogenic bacteria and synth...
Article
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The isolates TR-B 98 (2) and TR-B 98 (3) from the phosphate mines of Morocco and the isolate Trichoderma asperellum were tested for their ability to survive in the soil and stimulate the growth of wheat plants (soft wheat and durum wheat) and barley on a Mamora (SM) sand-based growing medium modified with increasing concentrations of natural phosph...
Article
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Root and stem rot are serious fungal diseases caused by Rhizoctonia solani Kühn (Cantharellales: Ceratobasidiaceae) on several plant species worldwide. This study was conducted, during the period between 2015 and 2018, to investigate morphological and phylogenetic diversity of R. solani strains isolated from different crops including melon, waterme...
Poster
Full-text available
Crown gall is the most important grapevine bacterial disease throughout the world. It is caused by the plant pathogen Allorhizobium vitis that is present in several regions of vine production in the world (Ophel and Kerr 1990). This disease is a kind of “plant cancer”, where the bacterium hijacks the plant’s cellular-level machinery and manipulates...
Conference Paper
Full-text available
Date palm is an important crop in Morocco, Tunisia and other drylands with a high agricultural, economic and cultural value. Harsh environmental conditions of those areas, further accelerated by climate change and the spread of root diseases, threaten date palm cultivation. To overcome limitations in productivity, high inputs of mineral fertilizers...
Article
Full-text available
Aims: Crown gall, a phytobacteriosis characterized by the formation of tumours on plant roots was observed in recently planted vineyards of the Meknes region (Morocco). The objective of this research was to analyze the diversity of pathogenic agrobacteria isolated from grapevine in Morocco. Methods and results: Eighty-two isolates from 11 affect...
Article
The Gram-positive bacterium Clavibacter michiganensis subsp. Michiganensis (Cmm), causal agent of bacterial wilt and canker of tomato, is an economically devastating pathogen that inflicts considerable damage throughout all major tomato producing regions. Three rhizobacteria strains Bacillus cereus, Pantoea agglomerans and Serratia proteamaculans w...
Article
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The present study was undertaken to estimate in vitro the capacity of twenty-three isolates of Trichoderma, isolated from soil and roots collected from adjacent sites to the Khouribga and Benguerir Phosphate mines (Morocco), and seven isolates from the laboratory's mycoteca to solubilize the Tricalcium phosphate. All these isolates showed, after th...
Article
Full-text available
Keywords: Pseudomonas savastanoi pv. savastanoi, olive knot disease, biological control, antagonistic bacteria, Bacillus subtilis
Article
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RESUME L`utilisation des PGPR (Plant Growth Promoting Rhizobacteria) comme approche biologique semble être la solution prometteuse afin d`améliorer la production de blé tendre (Triticum aestivum) au Maroc. Des recherches récentes ont prouvé que l'utilisation des PGPR comme inoculant constitue une alternative biologique soutenable pour la production...
Article
Full-text available
Allorhizobium (Agrobacterium) vitis is a host-specific pathogenic bacterium that causes grapevine crown gall disease, affecting vine growth and production worldwide. The antibacterial activities of different aromatic plant essential oils were tested in vitro and in planta against A. vitis. Among the essential oils tested, those of Origanum compactu...
Article
Full-text available
Stored grains are threatened by several insects, leading to losses in quality and quantity. Several studies have revealed the risks of using chemicals that can cause serious health problems for humans. It is in this perspective that the objective of our work should be seen: It was to assess the effect of the essential oil and leaf powder of Mentha...
Article
Full-text available
Endophytic and epiphytic bacteria have been reported as agents of bio-control of diseases and plant growth promotors. Here, in vitro and greenhouse experiments were conducted to evaluate the action of two microbial strains; Aureobasidium pullulans and Pantoea agglomerans, on biocontrol of bacterial canker and growth promotion of tomato (Lycopersico...
Article
Full-text available
The potential use of bacterial antagonists isolated from different area in Morocco for the biological control of grapevine crown gall caused by Allorhizobiumvitis was investigated. In vitro analyzing the activity of 90 bacterial isolates towards Allorhizobiumvitis strain S4 resulted in a selection of 26 biocontrol agents. The isolated were tested f...
Article
Ripe and overripe olive fruits (Picholine marocaine) showing circular spots of 5 to 20 mm in diameter, slightly depressed and reddish-brown in color, were collected from two orchards located in the regions of Ouazzane in Morocco. Colletotrichum gloeosporioides was isolated from symptomatic fruits and Koch’s postulate was fulfilled. According to the...
Article
Full-text available
Fire blight caused by Erwinia amylovora is a bacterial disease which affects many plant species, mainly belonging to the family Rosaceous. The following work aims to study some biological controls through the use of antagonistic bacteria and yeast, isolated from different biotopes against this bacterial disease isolated from different biotopes. The...
Article
Full-text available
Plant Growth promoting rhizobacteria are a heterogeneous group of bacteria that can be found in the rhizosphere, at root surfaces and in association with roots. They benefit plants through Production of plant hormones, such as auxins, asymbiotic N2 fixation, solubilization of mineral phosphates, antagonism against phytopathogenic microorganisms by...
Article
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Carrot (Daucus carota L. var. Mascot) plants exhibiting symptoms of yellowing, purpling, and curling of leaves, proliferation of shoots, formation of hairy secondary roots, and plant decline were observed in March 2014 and February 2015 in commercial fields in the Gharb Region of Morocco. The symptoms resembled those caused by ‘Candidatus Liberibac...
Article
Full-text available
The growth response of the biocontrol agent Pantoea agglomerans 2066-7 to change in water activity (aw), temperature, and pH was determined in vitro in basic medium. The minimum temperature at which 2066-7 was able to grow was 7°C, and the growth of 2066-7 did not change at varying pH levels (4–10.34). The best growth was obtained at a water activi...
Article
Full-text available
Pantoea ananatis is an important pathogen causing bacterial center rot in onion. Isolated strains from onion soft rot bulbs based on morphological characteristics were tested for hypersensitivity reaction on tobacco. Pathogenic strains underwent some biochemical tests which detected the presence of P. ananatis, based on RNA16S sequencing, this resu...
Article
Full-text available
Pantoea ananatis is an important pathogen causing bacterial center rot in onion. Isolated strains from onion soft rot bulbs based on morphological characteristics were tested for hypersensitivity reaction on tobacco. Pathogenic strains underwent some biochemical tests which detected the presence of P. ananatis, based on RNA16S sequencing, this resu...
Article
Full-text available
In the present study antibacterial activities of essential oils obtained from aerial parts of aromatic plants were tested, thyme (Thymus ciliatus), oregano (Origanum compactum), rosemary (Romasmarinus officinalis) and wormwood (Artemisia vulgaris) oils were investigated against the Pseudomonas savastanoi pv. savastanoi (PSS 2064-10) the causal agen...
Article
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The species Pectobacterium carotovorum include a diverse subspecies of bacteria that cause disease on a wide variety of plants. In Morocco, approximately 95 % of the P. carotovorum isolates from potato plants with tuber soft rot are P. carotovorum subsp carotovorum. The aim was to monitor this Moroccan population in time and to continue the work ca...
Book
Disease symptoms in potato plants infected with Candidatus Liberibacter solanacearum and Phytoplasmas from the aster yellows group usually include upward rolling of the apical leaves often associated with secondary bud proliferation, leaf reddish discoloration, premature senescence, malformed or shortened internodes, swollen nodes, aerial tubers. I...
Article
Full-text available
Epiphytic microorganisms, isolated from the olive knots, apple fruits and trees, quince, compost and water from different areas were screened for antagonistic activity against Pseudomonas marginalis, Pseudomonas viridiflava, Xanthomonas retroflexus and Pantoea ananatis on onion bulbs. From 77 microorganisms tested for antagonistic properties agains...
Article
Full-text available
Pseudomonas marginalis is an important postharvest pathogen causing soft rot in a wide variety of harvested fruits and vegetables. Isolated strains from rotten onion bulbs based on morphological characteristics, were tested for pathogenecity on tobacco. Pathogenic strains underwent a biochemical test which detected the presence of P. marginalis. Sy...
Book
Full-text available
L’oignon (Allium cepa), une liliacée très appréciée par le consommateur marocain occupe une superficie de 30.600 ha qui est en constante progression depuis plusieurs années. L’oignon comme dans la plupart des pays, constitue un légume populaire entrant dans la majorité des traditions culinaires. Dans la région de Meknès-El Hajeb, cette culture occu...
Article
Full-text available
In March of 2014, carrot plants (cv. Mascot) exhibiting symptoms of yellowing, purpling, and curling of leaves, proliferation of shoots, formation of hairy secondary roots, general stunting, and plant decline were observed in commercial fields in the Gharb region of Morocco. The symptoms resembled those caused by phytoplasmas, Spiroplasma citri, or...
Article
Full-text available
Pathogenicity of Alternaria alternata, Aspergillus flavus, Cladosporium sp. and Colletotrichum gloeosporioides isolated from olive fruits was studied by inoculating olive fruits and leaves. Three techniques were used to inoculate the fruits (mycelial plug on the intact and the injured olives and by injecting them with the spore's suspension) and tw...
Article
Full-text available
Fire blight disease caused by bacterium Erwiniaamylovora is among the most serious threat to rosaceous, was introduced for the first time in Morocco in 2006. Since, the disease propagated then in wide causing immense damages. The objective of this work is the characterization of E.amylovora the population collected between 2006 and 2011. Characteri...
Article
Pseudomonas marginalis is an important postharvest pathogen causing soft rot in a wide variety of harvested fruits and vegetables. Isolated strains from rotten onion bulbs based on morphological characteristics, were tested for pathogenecity on tobacco. Pathogenic strains underwent a biochemical test which detected the presence of P. marginalis. Sy...
Article
Full-text available
Ripe and overripe olive fruits (Picholine marocaine) showing circular spots of 5 to 20 mm in diameter, slightly depressed and reddish-brown in color, were collected from two orchards located in the regions of Ouazzane in Morocco. Colletotrichum gloeosporioides was isolated from symptomatic fruits and Koch’s postulate was fulfilled. According to the...
Patent
JF718336.1Pectobacterium carotovorum strain 46 pectate lyase (pelY) gene, partial cds JF718335.1Pectobacterium carotovorum strain 39 pectate lyase (pelY) gene, partial cds JF718334.1Pectobacterium carotovorum strain 13 pectate lyase (pelY) gene, partial cds JF718333.1Pectobacterium carotovorum strain 6 pectate lyase (pelY) gene, partial cds JF71833...
Article
Aureobasidium pullulans strains Ach 1-1 and 1113-5 are two effective biocontrol agents against Botrytis cinerea and Penicillium expansum on stored apples. In the present work, a monitoring system allowing their identification and quantification was developed. The methodology used consisted of the development of both molecular markers and a semi-sel...
Article
Full-text available
ABSTRACT The use of partially resistant cultivars should become an essential component of a sustainable management strategy of potato late blight, caused by Phytophthora infestans. It is therefore important to determine to what extent P. infestans populations can be selected for increased aggressiveness by potato cultivars with different levels of...
Article
Full-text available
Aureobasidium pullulans strain Ach1-1 was recently isolated for its biocontrol effectiveness against Penicillium expansum, the causal agent of blue mold on harvested apples. In the present study, strain Ach1-1 was found to be very effective in controlling P. expansum on apple wounds. For in vitro tests, strain Ach1-1 and P. expansum were cocultured...