| antimicrobial activities of secondary metabolites produced by endophytic fungi from spondias mombin. | we performed a search for bioactive compounds produced by fungal endophytes from spondias mombin (anacardiaceae). culture broth extracts of guignardia sp., phomopsis sp. and pestalotiopsis guepinii were separated by chromatographic methods and tested for biological activities. the crude extracts of these endophytes were tested against fourteen organisms, including actinomycetes, gram-negative and gram-positive bacteria, yeast, and filamentous fungi. all fungal extracts inhibited actinomycete gro ... | 2000 | 10986672 |
| antifungal activity of camptothecin, trifolin, and hyperoside isolated from camptotheca acuminata. | leaf spots and root rots are major fungal diseases in camptotheca acuminata that limit cultivation of the plant for camptothecin (cpt), a promising anticancer and antiviral alkaloid. bioassays showed that pure cpt and flavonoids (trifolin and hyperoside) isolated from camptotheca effectively control fungal pathogens in vitro, including alternaria alternata, epicoccum nigrum, pestalotia guepinii, drechslera sp., and fusarium avenaceum, although antifungal activity of these compounds in the plant ... | 2005 | 15631505 |
| colonization of cashew plants by lasiodiplodia theobromae: microscopical features. | lasiodiplodia theobromae is a phytopathogenic fungus causing gummosis, a threatening disease for cashew plants in brazil. in an attempt to investigate the ultrastructural features of the pathogen colonization and its response to immunofluorescence labeling, light, confocal and electron microscope studies were conducted on different severity scale patterns of diseased plants. lasiodiplodia-antisera was checked for cross reactivity against common cashew plants fungi. optical microscopy analysis re ... | 2010 | 21194959 |
| cellular responses induced in vitro by pestheic acid, a fungal metabolite, in a gastric adenocarcinoma cell line (pg100). | there is a constant search for new cancer treatments that are less aggressive and economically affordable. in this context, natural products extracted from plants, fungi, and microorganisms are of great interest. pestheic acid, or dihidromaldoxin, is a chlorinated diphenylic ether extracted from the phytopathogenic fungus pestalotiopsis guepinii (amphisphaeriaceae). we assessed the cytotoxic, cytostatic, and genotoxic effects of pestheic acid in a gastric adenocarcinoma cell line (pg100). a decr ... | 2013 | 24114206 |
| phytotoxic α-pyrones produced by pestalotiopsis guepinii, the causal agent of hazelnut twig blight. | | 2012 | 22293915 |
| viability and sporulating capability of coelomycetes preserved under a range of different storage regimes. | the viability and sporulating capability of 45 coelomycetes strains were evaluated. strain subcultures were maintained under mineral oil, in soil and on agar slant for different periods of time lasting as long as 50 years, 39 years and 2 years, respectively. of the 34 strains preserved under mineral oil, 20 maintained their viability but lost the sporulating capability with exception of one strain of pestalotiopsis guepinii. of the 16 strains also preserved in soil only one was viable and it was ... | 2000 | 15762810 |
| production, characterization and application of a thermostable tannase from pestalotiopsis guepinii urm 7114. | tannase (ec 3.1.1.20) is an enzyme that hydrolyzes the ester and depside bonds of tannic acid to gallic acid and glucose. in the production of foods and beverages, it contributes to the removal of the undesirable effects of tannins. the aim of this study is to investigate the potential of endophytic fungi isolated from jamun (syzygium cumini (l.) skeels) leaves, and identified as pestalotiopsis guepinii, in the production of tannase. tannase was produced extracellularly by p. guepinii under subm ... | 2014 | 27904319 |
| decolorization of synthetic dyes by the deuteromycete pestalotiopsis guepinii clps no. 786 strain. | the ability of pestalotiopsis guepinii clps no. 786 to decolorize 13 dyes of varied structure was analyzed and compared with that of the basidiomycete phanerochaete chrysosporium . nine dyes representing anthrapyridone, azo, n-heterocyclic and triphenylmethane chromophores, but none with the o-heterocyclic group, were decolorized by p. guepinii when added to an agar medium. studies with liquid cultures revealed that p. guepinii transformed both crystal violet and methylene blue b dyes, and adsor ... | 2006 | 16463315 |