CHAMPIGNONS ENDOPHYTES PDF

Les champignons endophytes sont des organismes qui vivent à l’intérieur de communautés de champignons endophytes de racines de deux espèces de. L’inoculation du pois chiche avec des champignons endophytes indigènes en serre a manipulation de leurs champignons endophytes par inoculation. champignons endophytes du “Rhynia gwynne-vaughanii” K. et L. etude morphologique et deductions sur leur biologie []. Boullard, B. Lemoigne, Y.

Author: Voodoojind Julkis
Country: Brunei Darussalam
Language: English (Spanish)
Genre: Science
Published (Last): 4 February 2009
Pages: 356
PDF File Size: 15.90 Mb
ePub File Size: 20.43 Mb
ISBN: 271-8-82893-841-3
Downloads: 11849
Price: Free* [*Free Regsitration Required]
Uploader: Makree

Based on these observations, compound 2 was identified as the known isocochliodinol which was confirmed by comparison of its UV, 1 H NMR and mass spectral data with published data Sekita, Isocochliodinol and neocochliodinol, bis 3-indolyl – benzoquinones from Chaetomium spp.

Results and discussion 18 The crude ethyl acetate extract of rice cultures of Chaetomium sp. Furthermore, aromatic proton and carbon resonances had chemical shifts and multiplicities consistent with the presence of a disubstituted indole residue.

Plant material and fungal isolation. The material was placed on a Petri dish malt agar medium containing an antibiotic champignins suppress bacterial growth medium composition: It has been established that perennial grasses harbour different types of endophytic bacteria and fungi. Artificial inoculation of young switchgrass seedlings with selected bacterial endophytes hold promise as a method of reinfection switchgrass seedlings.

  FROM MANAGERIALISM TO ENTREPRENEURIALISM PDF

Switchgrass Panicum vergatum L. All items in eScholarship McGill are protected by copyright with all rights reserved unless otherwise indicated. Exponentially growing cells were harvested, endophytds and diluted appropriately.

Search results for “champignons endophytes”

The antibacterial activity of some naturally occurring 2,5-dihydroxy-1,4-benzoquinones. The compound was previously obtained from several Chaetomium sp.

Secondary metabolites from endophytic Streptomyces aureofaciens CMUAc and their antifungal activity. Cochliodinol proved endohpytes be highly active against the cancer cell line with an EC50 of 7. Thus, 2 had to represent a symmetrical isomer of cochliodinol 1leaving a positional isomer with the prenyl group attached to C-6 as the most probable alternative. Le champignon endophytique Chaetomium sp.

Mycoflore des aiguilles de Pinus banksiana et Pinus resinosa. I. Champignons endophytes

First, the percentage of cell survival was determined and results were compared to those of untreated controls. Thus, it may be concluded that cytotoxic activity was affected by the position of prenyl substituents at the indole rings.

The yellow MTT penetrates into the living cells and in the presence of mitochondrial dehydrogenases, MTT is transformed to a blue formazan complex. In the 1 H NMR spectrum, all resonances originate from pairs of chemically equivalent groups champlgnons to symmetry in the molecule.

Canadian Forest Service Publications

Stems were rinsed in sterilized distilled water twice. We evaluated the antagonistic activity of some endophytes against several fungal pathogens and selected candidate endophytes for future introduction into commercial switchgrass cultivars for biomass enhancement.

  BALAURE MARKETING PDF

The following gradient was used MeOH, 0. Topical anti-inflammatory activity of Salvia officinalis L. Bioprospecting for microbial endophytes and their natural products.

Mycotoxin production by Chaetomium spp.

This study was conducted to explore fungal and bacterial endophyte ensophytes inhabiting switchgrass cultivars of Quebec. The role of natural product chemistry in drug discovery.

Search results for champignons endophytes

A small part of the medium from a Petri dish containing the purified fungus was transferred under sterile conditions to the rice medium. Rainforest endophytes and bioactive products. What is an endophytic fungus? A total of endophytes isolates champignond recovered 52 bacteria and 93 fungi from whole plant samples collected at early vegetative, and full reproductive stages.

The colour intensity is correlated with the number of healthy living cells. Plant material and fungal isolation 4 Fresh healthy stems of S. The small amount of ethanol present in the wells did not affect the experiments.