Khaoula Habbadi

Khaoula Habbadi
Université Ibn Tofail · Department of Biology

Microbiology PhD

About

26
Publications
6,030
Reads
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130
Citations
Citations since 2017
24 Research Items
129 Citations
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20172018201920202021202220230102030405060
20172018201920202021202220230102030405060

Publications

Publications (26)
Article
Full-text available
Pure culture isolation of the Xylella fastidiosa strain related to the olive quick decline syndrome (OQDS), lately noticed in Apulia (southern Italy) was attempted from naturally infected symptomatic plants mainly Olea europaea L., Polygala myrtifolia and Rosmarinus officinalis using printing and sap extraction methods. Prior to isolation, RT-LAMP...
Article
Full-text available
This study aims to investigate the yield, chemical composition and inhibitory effect of four essential oils of eucalyptus collected from Morocco on the pathogenic Allorhizobium vitis S4 causal agent of the crown gall of grapevine. The identification of the constituents of essential oils was performed by GC-MS analysis and the antibacterial activity...
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
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
Full-text available
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
Precision Agriculture (PA) is a management strategy based on Information and Communication Technologies (ICT) used to assist management decisions with the aim to increase productivity, to reduce labor time and inputs needed, to improve benefits and to protect the environment. Techniques related to PA were initially used to monitor status of annual...
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
Full-text available
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
This study aims to determine the phytochemical compounds of Cistus ladaniferus subsp. ladanifer and Mentha suaveolens and the investigations of their antibacterial effects against phytopathogenic bacteria. The chemical composition of Cistus ladaniferus subsp. ladanifer essential oils (CLEO) and Mentha suaveolens essential oils (MSEO) was determined...
Article
Full-text available
In order to discover new natural resources with biological properties, the chemical composition, the antioxidant, the antimicrobial activities and the potential use as food preservative of essential oils of Moroccan Achillea odorata subsp. pectinata (AOpEO) and Ruta montana (RMEO) were studied. Gas chromatography-mass spectrometry (GC-MS) analysis...
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...
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
Full-text available
Aims: This study aimed to i) identify Pseudomonas savastanoi pv. savastanoi (Pss) as a causal agent of the olive knot on the basis of biochemical, pathogenicity and PCR technique ii) investigate in vitro bacterial resistance toward copper-based compounds and efficiency of some antibiotics on pathogen suppression. Methodology and results: Biochemica...
Article
Full-text available
Keywords: Pseudomonas savastanoi pv. savastanoi, olive knot disease, biological control, antagonistic bacteria, Bacillus subtilis
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
A rapid method and sensitive methods for extraction of bacterial DNA from pure culture and directly from plant materiel were compared in polymerase chain reaction with specific primers VCF3/VCR3 to see the reliable method that can used in the detection of tumorigenic strain of Allorhizobium vitis causal agent of grapevine crown gall. From the three...
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
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...

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Projects (3)