Search results for "FUNGAL"

Carrot [Daucus carota L.] allelochemicals as a chemomediators between organisms

2004

The chemical mediations which affect carrot (Daucus carota L.) growth in the context of the ecological interactions of this common vegetable with microorganisms, insects and competing plants are reported. Literature data and results of these study confirm, that carrot plants are well equipped with defensive and offensive chemical mechanisms, which allow them to avoid or to decrease the negative influence of competitors and pathogens. What is worthy of note the chemicals involved in these processes might be treated as the leading structures to design for new environmental friendly pesticides.

Water-stable cellulose fiber foam with antimicrobial properties for bio based low-density materials

2018

New bio-based packaging materials are highly interesting for replacing conventional fossil based products for a more sustainable society. Waterstable cellulose fiber foams have been produced in a simple one-batch foam-forming process with drying under ambient conditions. The cellulose fiber foams have a low density (33–66 kg/m3) and can inhibit microbial growth; two highly valuable features for insulating packaging materials, especially in combination with stability in water. Cationic chitosan and/or polyvinylamine have been added during the foamforming process to give the foams water-stability and antimicrobial properties. The structural and mechanical properties of the cellulose fiber foa…

Antagonistic activity of Bacillus subtilis strain AG1 against fungal microorganisms associated with Vitis vinifera.

2009

Synthesis and structure-activity relationship studies of new 3-methyl-5-(5-propyl-1H-1-R'-3-pyrazolyl)-1H-1-R-4-nitrosopyrazoles as antimicotic agents

2015

We have reported that some 4-nitrosopyrazoles derivatives displayed in vitro and in vivo potent antifungal activity at no cytotoxic concentration and some of these compounds were 4 times more potent than Amphotericine B and Fluconazole respectively against Cryptococcus.Neoformans and C. Krusei.We reported also that the absence of NO group or its replacement with NO2 or NH2 groups gave compounds devoid of antimycotical activity. To better understand the mechanism of action and with the aim of identifying the chemical features responsible for the action, we synthesized and tested a new class of compounds in which the 4-NO group was replaced with 4-CN group having, these last, similar steric a…

Supramolecular Structure and Antimicrobial Activity of Ni(II) Complexes with s-Triazine/Hydrazine Type Ligand

2023

The two complexes, [Ni(DPPT)2](NO3)2*1.5H2O (1) and [Ni(DPPT)(NO3)Cl].EtOH (2), were synthesized using the self-assembly of (E)-2,4-di(piperidin-1-yl)-6-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)-1,3,5-triazine (DPPT) with Ni(NO3)2*6H2O in the absence and presence of NiCl2*6H2O, respectively. In both cases, the neutral tridentate DPPT ligand is found coordinated to the Ni(II) via three N-atoms from the hydrazone, pyridine and s-triazine rings. Hence, the homoleptic complex 1 has a NiN6 hexa-coordination environment while two NO3− are counter anions in addition to one-and-a-half crystallized hydration water molecules are found acting as an outer sphere. The heteroleptic complex 2 has a NiN3O…

Fungal biodiversity and in situ conservation in Italy

2011

A remarkable increase in knowledge of fungal biodiversity in Italy has occurred in the last five years. The authors report up-to-date numbers of fungi (Basidiomycota and Ascomycota) by regions together with distributional and ecological data on hypogeous fungi. Specific case studies such as alpine fungi, orchid mycorrhizas symbionts, invasive species, and the use of macrofungi as food by red squirrels are analyzed. In situ conservation strategies carried out on target species and/or taxonomic groups are also indicated.

Biocontrol activities of Pseudomonas fluorescens against asparagus pathogen

2016

Pseudomonas spp. and their metabolites present environmentally friendly alternative to chemical products to improve plant growth in many different applications. Extensive studies have shown that these microorganisms and their metabolites could have an important role in agriculture and horticulture in improving crop productivity. The aim of the research was to assess a potential biological activity of Pseudomonas fluorescens against Fusarium oxysporum isolated from the spears of asparagus. The antagonistic properties of metabolites were assayed with a dual culture plate method on PDA and Czapek media for supernatants obtained from 6, 12, 24 and 48-hour culture of P. fluorescens. The culturin…

Wykorzystanie antagonistycznych właściwości Bacillus subtilis wobec Rhizoctonia solani

2017

Yeast Killer Toxin-Like Candidacidal Ab6 Antibodies Elicited through the Manipulation of the Idiotypic Cascade

2014

A mouse anti-anti-anti-idiotypic (Id) IgM monoclonal antibody (mAb K20, Ab4), functionally mimicking a Wyckerhamomyces anomalus (Pichia anomala) killer toxin (KT) characterized by fungicidal activity against yeasts presenting specific cell wall receptors (KTR) mainly constituted by β-1,3-glucan, was produced from animals presenting anti-KT Abs (Ab3) following immunization with a rat IgM anti-Id KT-like mAb (mAb K10, Ab2). MAb K10 was produced by immunization with a KT-neutralizing mAb (mAb KT4, Ab1) bearing the internal image of KTR. MAb K20, likewise mAb K10, proved to be fungicidal in vitro against KT-sensitive Candida albicans cells, an activity neutralized by mAb KT4, and was capable of…

Anchorage of Candida albicans Ssr1 to the cell wall, and transcript profiling of the null mutant.

2005

Incorporation into the wall of Candida albicans Ssr1, a GPI-dependent protein, was investigated by construction of different truncated genes for which the three potential omega sites (S199, S215 and G216) and the corresponding omega+1 and omega+2 were eliminated or modified. Cells of the C. albicans ssr1Delta mutant were transformed with pADH-pl harboring the truncated versions of CaSSR1, pADH-DeltaCaSSR1t(217-234) (lacking a C-terminal hydrophobic stretch of 18 aa including the putative omega+2 and omega+1, omega+2 of S215 and G216) or pADH-DeltaCaSSR1t(199-201) (lacking three serine residues), and their walls were analyzed for the protein. Results suggested that the three serine residues …