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Cutaneous infection caused by Macrophomina phaseolina in a child with acute myeloid leukemia.

ABSTRACT: We report a case of Macrophomina phaseolina skin infection in an immunocompromised child with acute myeloid leukemia, which was treated successfully with posaconazole without recurrence after a hematopoietic stem cell transplant. The fungus was identified by DNA sequencing using both the internal transcribed spacer and D1/D2 region of the 28S ribosomal DNA gene.

SUBMITTER: Srinivasan A

PROVIDER: S-EPMC2691108 | biostudies-literature | 2009 Jun

REPOSITORIES: biostudies-literature

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Cutaneous infection caused by Macrophomina phaseolina in a child with acute myeloid leukemia.

Srinivasan Ashok A Wickes Brian L BL Romanelli Anna M AM Debelenko Larisa L Rubnitz Jeffrey E JE Sutton Deanna A DA Thompson Elizabeth H EH Fothergill Annette W AW Rinaldi Michael G MG Hayden Randall T RT Shenep Jerry L JL

Journal of clinical microbiology 20090422 6

We report a case of Macrophomina phaseolina skin infection in an immunocompromised child with acute myeloid leukemia, which was treated successfully with posaconazole without recurrence after a hematopoietic stem cell transplant. The fungus was identified by DNA sequencing using both the internal transcribed spacer and D1/D2 region of the 28S ribosomal DNA gene. ...[more]

PMID: 19386841

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Fungal keratitis caused by Macrophomina phaseolina - A case report.

Project description:A 70 year old female patient presented with complaints of pain, watering and swelling in the right eye. She gave a history of fall, as she was walking in the paddy field of her farm. Ophthalmological and Microbiological investigation revealed a fungal keratitis with an unusual fungus Macrophomina phaseolina which is primarily a plant pathogen, with a potential to cause human infections especially in immuno-compromised patients. The patient responded well to the antifungal treatment with Oral Voriconazole with absence of recurrence and dissemination.

| S-EPMC3854616 | biostudies-literature

Cutaneous infection caused by Cylindrocarpon lichenicola in a patient with acute myelogenous leukemia.

Project description:Cylindrocarpon lichenicola is a saprophytic soil fungus which has rarely been associated with human disease. We report the first case of localized invasive cutaneous infection caused by this fungus in a 53-year-old male from the rural midwestern United States with relapsed acute myelogenous leukemia. On admission for induction chemotherapy, the patient was noted to have an abrasive laceration between the fourth and fifth metacarpophalangeal joints and on the dorsum of the right hand, which progressed to frank ulceration following chemotherapy. A biopsy provided an initial diagnosis of an invasive fungal infection consistent with aspergillosis based on the histopathological appearance of the mold in tissue. Multiple positive fungal cultures which were obtained from the biopsied tissue were subsequently identified by microscopic and macroscopic characteristics to be C. lichenicola. The infection resolved following marrow regeneration, aggressive debridement of the affected tissue, and treatment with amphotericin B. This case extends the conditions associated with invasive disease caused by C. lichenicola.

| S-EPMC87389 | biostudies-literature

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Project description:Macrophomina phaseolina overview

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Project description:The generation of pangenomic variation in an asexual plant pathogen

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Project description:Macrophomina phaseolina Genome sequencing

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Medicago truncatula and Macrophomina phaseolina interaction

Project description:This experiment was designed to study the interactions between Medicago truncatula and the charcoal rot pathogen Macrophomina phaeolina. Two-week-old plants grown in Magenta boxes supplied with 1/2 MS salt and 1% sucrose were inoculated with M. phaseolina covered wheat seeds, and roots were harvested at 24, 36 and 48 hours after inoculation. Control plants were mock inoculated with a sterile wheat seed, and roots were harvest 24 hours later. Pooled RNAs were used in the array experiment using Affymetrix GeneChip(r) Medicago Genome Array.

2012-05-15 | E-MEXP-3580 | biostudies-arrayexpress

Discovery of three loci increasing resistance to charcoal rot caused by Macrophomina phaseolina in octoploid strawberry.

Project description:Charcoal rot caused by Macrophomina phaseolinais an increasing economic problem in annualized strawberry production systems around the world. Currently there are no effective postfumigation chemical controls for managing charcoal rot, and no information is available on the genetic architecture of resistance to M. phaseolina in strawberry (Fragaria ×ananassa). In this study, three multiparental discovery populations and two validation populations were inoculated at planting and evaluated for mortality in three consecutive growing seasons. Genome-wide SNP genotyping and pedigree-based analysis with FlexQTL™ software were performed. Two large-effect quantitative trait loci (QTL) increasing charcoal rot resistance were discovered and validated in cultivated germplasm. FaRMp1 was located on linkage group 2A in the interval 20.4to 24.9 cM, while FaRMp2 was located on linkage group 4B in the interval 41.1to 61.2 cM. Together these QTLs explained 27% and 17% of the phenotypic variance in two discovery populations consisting of elite breeding germplasm. For both QTLs, the resistant allele showed some evidence of partial dominance, but no significant interaction was detected between the two loci. As the dosage of resistant alleles increased from 0 to 4 across the two QTLs, mortality decreased regardless of the combination of alleles.A third locus, FaRMp3 on 4D, was discovered in FVC 11-58, a reconstituted F.×ananassa originating from diverse F. virginiana and F. chiloensis accessions. This locus accounted for 44% of phenotypic variation in four segregating crosses. These findings will form the basis for DNA-informed breeding for resistance to charcoal rot in cultivated strawberry.

| S-EPMC8022958 | biostudies-literature

Antagonistic activity of Aspergillus versicolor against Macrophomina phaseolina.

Project description:The present study was carried out to evaluate the antagonistic efficacy of Aspergillus versicolor against the soil and seed inhibiting destructive plant pathogen Macrophomina phaseolina. The tested antagonist was confirmed by rDNA sequencing of ITS and β-tubulin genes with respective accession numbers MN719083 and MN736397. In dual culture bioassays, A. versicolor showed potent antagonist activity and reduced the pathogen's growth by 60% over control. To understand the mechanism of antagonistic fungus, DNA of the pathogenic fungus was incubated in secondary metabolites produced by the A. versicolor for 24 and 48 h. After 48 h, metabolites of A. versicolor fully degraded the DNA of M. phaseolina. Moreover, for the identification of bioactive compounds, the chloroform and ethyl acetate fractions of A. versicolor culture filtrates were subjected to GC-MS analysis. A total of 10 compounds were identified in each of the two fractions. Among these, chondrillasterol (37.43%) followed by 1,2-benzedicarboxylic acid, diisooctyl ester (25.93%), decane (16.63%), 9,12-octadecadienoic acid (Z,Z)- (13.32%), stigmasterol (11.16%), undecane (10.93%), cis-1-chloro-9-octadecene (8.66%), benzene, 1,3,5-trimethyl (8.46%), and hexadecanoic acid, 2-hydroxy-1-(hydroxymethyl) ethyl ester (8.13%) were the major compounds. Some of the identified compounds are known to possess strong antifungal, antibacterial, nematicidal, and antioxidant properties. The present study concludes that A. versicolor is an effective antagonist against M. phaseolina.

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Cryo-EM structure of Macrophomina phaseolina macrophomene synthase

Project description: Not available

| EMPIAR-11409 | biostudies-other

An insight into the lignin peroxidase of Macrophomina phaseolina.

Project description:Macrophomina phaseolina is one of the deadliest necrotrophic fungal pathogens that infect more than 500 plant species including major food, fiber, and oil crops all throughout the globe. It secretes a cocktail of ligninolytic enzymes along with other hydrolytic enzymes for degrading the woody lignocellulosic plant cell wall and penetrating into the host tissue. Among them, lignin peroxidase has been reported only in Phanerochaete chrysosporium so far. But interestingly, a recent study has revealed a second occurrence of lignin peroxidase in M. phaseolina. However, lignin peroxidases are of much significance biotechnologically because of their potential applications in bio-remedial waste treatment and in catalyzing difficult chemical transformations. Besides, this enzyme also possesses agricultural and environmental importance on account of their role in lignin biodegradation. In the present work, different properties of the lignin peroxidase of M. phaseolina along with predicting the 3-D structure and its active sites were investigated by the use of various computational tools. The data from this study will pave the way for more detailed exploration of this enzyme in wet lab and thereby facilitating the strategies to be designed against such deadly weapons of Macrophomina phaseolina. Furthermore, the insight of such a ligninolytic enzyme will contribute to the assessment of its potentiality as a bioremediation tool.

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