Effet des conditions de culture sur la mycorhization de l’Helianthemum guttatum par trois espèces de terfez des genres Terfezia et Tirmania d'Algérie

1992 ◽  
Vol 70 (12) ◽  
pp. 2453-2460 ◽  
Author(s):  
Zohra Fortas ◽  
Gérard Chevalier
Keyword(s):  
Key Words ◽  
Nutritive Solution ◽  
Mycorrhizal Synthesis ◽  
Terfezia Arenaria ◽  
Axenic Conditions ◽  
Terfezia Claveryi ◽  
Desert Truffles

Three species of edible desert truffles, Terfezia arenaria, Terfezia claveryi, and Tirmania pinoyi associated with Helianthemum guttatum in Algeria were examined in this study. The mycorrhizal synthesis between the three species of desert truffles and Helianthemum guttatum was carried out with two different methods: (i) under axenic conditions on perlite permeated by a nutritive solution, by inoculating the seedlings with mycelial fragments; (ii) under gnotoxenic conditions on natural substrates, by inoculating plants with spore suspensions. The method of synthesis did not have any influence on the type of mycorrhizae. The desert truffles formed two types of mycorrhizae according to the fertility of the substrate: ectomycorrhizae without sheath, in the phosphorus rich substrates, or ectendomycorrhizae, also without sheath, in the phosphorus deficient substrates. Primordial ascomata were obtained in the syntheses involving polysporous inocula. Key words: ectomycorrhizae, ectendomycorrhizae, Helianthemum guttatum, Terfezia, Tirmania.

scholarly journals Differential anti-inflammatory biomarkers of the desert truffles Terfezia claveryi and Tirmania nivea revealed via UPLC-QqQ-MS-based metabolomics combined to chemometrics

LWT ◽  
2021 ◽  
pp. 111965
Author(s):  
Reham S. Darwish ◽  
Eman Shawky ◽  
Khallad M. Nassar ◽  
Ramez M. Rashad ElSayed ◽  
Dalia E. Hussein ◽  
...  
Keyword(s):  
Inflammatory Biomarkers ◽  
Anti Inflammatory ◽  
Terfezia Claveryi ◽  
Desert Truffles

Biofiltration de l'air pollué par le xylène : observations expérimentales

2002 ◽  
Vol 29 (4) ◽  
pp. 543-553 ◽  
Author(s):  
Hasnaa Jorio ◽  
Guy Viel ◽  
Michèle Heitz
Keyword(s):  
Carbon Dioxide ◽  
Pressure Drop ◽  
Key Words ◽  
Removal Efficiency ◽  
Residence Time ◽  
Elimination Capacity ◽  
Nutritive Solution ◽  
Filter Bed ◽  
Empty Bed Residence Time

A new filtering material has been tested for its biofiltration performance for the treatment of air contaminated with the three isomers of xylene. The biofilter, operated at an empty bed residence time of 68 s and for xylene concentrations up to 6.7 g·m–3, allowed a xylene load and reduction of more than 92% for concentrations up to 2 g·m–3, and more than 65% for concentrations less than 6.7 g·m–3. The maximum xylene elimination capacity is of 236 g·m–3·h–1. In general, the removal efficiency of meta-xylene is the highest whereas the removal efficiency of ortho-xylene is the lowest. At high xylene concentration, the increase of biodegradation intensity leads to the accumulation of a voluminous biofilm around the filtering particles, causing the clogging of the filter bed, the progressive retention of the nutritive solution in the superior parts of the bed, and the drying of the inferior parts of the bed. These observations have showed that a biofilter operating at high elimination capacities requires a meticulous control of the humidity of the filtering bed and a regular draining of the biomass excess. Key words: biofiltration, xylene, ortho, meta, and para isomers, carbon dioxide, biofilm, pressure drop, biomass excess.[Journal translation]

A Comprehensive and Critical Review on Ethnopharmacological Importance of Desert Truffles: Terfezia claveryi, Terfezia boudieri, and Tirmania nivea

2021 ◽  
pp. 1-20
Author(s):  
Vishnu Priya Veeraraghavan ◽  
Sardar Hussain ◽  
Janardhana Papayya Balakrishna ◽  
Lavina Dhawale ◽  
Malathi Kullappan ◽  
...  
Keyword(s):  
Critical Review ◽  
Terfezia Claveryi ◽  
Terfezia Boudieri ◽  
Desert Truffles

scholarly journals Mycorrhizal synthesis between the truffle Terfezia claveryi and Some Annual dicot plants using different culture media

2018 ◽  
Vol 2ndInt.Conf.AGR (Special Issue) ◽  
pp. 589-602
Author(s):  
Bahrouz Mahmood Amin Al-jaff Al-jaff ◽  
◽  
Miqdad Hamasalh Mohammed Amin Amin ◽  
Keyword(s):  
Culture Media ◽  
Mycorrhizal Synthesis ◽  
Terfezia Claveryi

scholarly journals Bioecology of desert truffles in the province of Figuig in Eastern Morocco

2018 ◽  
Vol 46 ◽  
Author(s):  
Fatima Zohra Bermaki ◽  
Lahsen Khabar ◽  
Amal Ezzanega
Keyword(s):  
Eastern Morocco ◽  
Terfezia Claveryi ◽  
Terfezia Boudieri ◽  
Desert Truffles

Antecedentes: La fitosociología, y diversidad de plantas hospederas y de trufas del desierto en el noreste de Marruecos ha sido escasamente estudiada a nivel mundial.Objetivo: Evaluar algunos parámetros generales y específicos de la fitosociología, y la diversidad de las plantas hospederas y la diversidad de trufas del desierto en el noreste de Marruecos.Métodos: Se evaluaron diez sitios productivos piloto ubicados en la provincia de Figuig, en Marruecos. Se evaluaron las características del suelo y se identificaron las plantas hospederas y la diversidad de trufas en condiciones de campo.Resultados y conclusión: Los resultados fitosociológicos revelaron la abundancia de la planta herbácea Helianthemum ledifolium como planta huésped dominante en ocho sitios en Abbou Lakhal y Bni Guil. Mientras tanto, la planta perenne Helianthemum lippii dominó dos sitios en la parte noroeste del área de estudio. Las trufas del desierto Tirmania nivea, Tirmania pinoyi, Terfezia claveryi, Terfezia boudieri y Picoa juniperi fueron identificadas en las áreas estudiadas. Las especies del género Tirmania fueron abundantes en Bni Guil y las pertenecientes al género Terfezia dominaron en Abou Lakhal. El género Picoa fue identificado solo en un sitio. Este trabajo muestra que las plantas hospederas y las condiciones climáticas influyen en la distribución de las trufas del desierto en el este de Marruecos. 

Comparative metabolome classification of desert truffles Terfezia claveryi and Terfezia boudieri via its aroma and nutrients profile

LWT ◽  
2021 ◽  
Vol 142 ◽  
pp. 111046 ◽  
Author(s):  
Mohamed A. Farag ◽  
Doaa Fathi ◽  
Samir Shamma ◽  
Mohamed Sherif A. Shawkat ◽  
Sohir M. Shalabi ◽  
...  
Keyword(s):  
Terfezia Claveryi ◽  
Terfezia Boudieri ◽  
Desert Truffles

Erythrophagocytosis by Entamoeba histolytica.- Ultrastructural Study

1972 ◽  
Vol 30 ◽  
pp. 156-157 ◽  
Author(s):  
Norberto Treviño ◽  
Alfredo Feria-Velasco ◽  
I. Ruiz de Chávez
Keyword(s):  
Electron Microscopy ◽  
Light Microscopy ◽  
Entamoeba Histolytica ◽  
Ultrastructural Study ◽  
Saline Solution ◽  
Physiological Saline ◽  
Ultrastructural Level ◽  
Hot Plate ◽  
Physiological Saline Solution ◽  
Axenic Conditions

Although erythrophagocytosis by various species of Entamoeba is a well known phenomenon this has not yet been studied in detail at the ultrastructural level. The present work deals with the description of the incorporation process of erythrocytes by trophozoites of E. histolytica. For this study, trophozoites of E. histolytica, HK-9:NIH strain cultured in axenic conditions and washed human erythrocytes were placed on a hot plate at 37°C in physiological saline solution. After 5 minutes, 2.5% glutarldehyde was added and the samples were processed according to conventional techniques for electron microscopy.Based upon light microscopy studies on living trophozoites in contact with erythrocytes, it seems that erythrophagocytosis only takes place in one pole of the parasite.

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