Immobilization of Mn(II) Ions by a Mn-Oxidizing Fungus &lt;I&gt;Paraconiothyrium sp.-Like&lt;/I&gt; Strain at Neutral pHs

Sasaki, Keiko; Matsuda, Mitsuhiro; Hirajima, Tsuyoshi; Takano, Keishi; Konno, Hidetaka

doi:10.2320/matertrans.47.2457

Cited by 24 publications

(12 citation statements)

References 14 publications

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“…Coniothyrium-like fungi are known as biological control agents ( Finch-Savage et al 2003 ), potential bioremediators ( Sasaki et al 2006 ), producers of metabolites inhibiting influenza virus replication ( Fukami et al 2000 ), and as producers of substances with potential anticancer activity ( Turbyville et al 2006 ). Tsuda et al (2003) described metabolites of a Paraconiothyrium isolate from a marine horse mussel with antagonistic and antifungal abilities.…”

Section: Introductionmentioning

confidence: 99%

Novel Paraconiothyrium species on stone fruit trees and other woody hosts

Damm¹,

Verkley²,

Crous³

et al. 2008

Pers - Int Mycol J

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Coniothyrium-like fungi are common wood and soil inhabitants and hyperparasites on other fungi. They belong to different fungal genera within the Pleosporales. Several isolates were obtained on wood of different Prunus species (plum, peach and nectarine) from South Africa, on Actinidia species from Italy and on Laurus nobilis from Turkey. Morphological and cultural characteristics as well as DNA sequence data (5.8S nrDNA, ITS1, ITS2, partial SSU nrDNA) were used to characterise them. The isolates belonged to three species of the recently established genus Paraconiothyrium. This is the first report of Paraconiothyrium brasiliense on Prunus spp. from South Africa. Two new species are described, namely Paraconiothyrium variabile sp. nov. on Prunus persica and Prunus salicina from South Africa, on Actinidia spp. from Italy and on Laurus nobilis from Turkey, and Paraconiothyrium africanum sp. nov. on Prunus persica from South Africa. Although other known species of Paraconiothyrium commonly produce aseptate conidia, those of P. africanum and P. hawaiiense comb. nov. are predominantly two-celled.

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Section: Introductionmentioning

confidence: 99%

Novel Paraconiothyrium species on stone fruit trees and other woody hosts

Damm¹,

Verkley²,

Crous³

et al. 2008

Pers - Int Mycol J

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“…The optimization of the medium composition for the fungal Mn oxidation was described in details elsewhere. 15) A 500 cm 3 Erlenmeyer flask was filled with 150-200 cm 3 of the medium. The concentration of Mn 2þ was adjusted to [Mn 2þ ] = 150 mg dm À3 .…”

Section: à3mentioning

confidence: 99%

“…14) The strain is unique to have high Mn tolerance and oxidize more than 380 mg dm À3 of Mn 2þ ions. 15) In the present work, the biogenic Mn oxide was produced by the strain of fungus, and characterized chemically, morphologically and mineralogically. Sorption of Co 2þ ions to the biogenic Mn oxide was investigated and compared with that of the synthetic Mn oxides.…”

Section: Introductionmentioning

confidence: 96%

Sorption of Co2+ Ions on the Biogenic Mn Oxide Produced by a Mn-Oxidizing Fungus, Paraconiothyrium sp. WL-2

et al. 2008

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A Paraconiothyrium sp. WL-2 of Mn-oxidizing fungus is highly tolerant to Mn 2þ ions, and capable of oxidizing more than 380 mg dm À3of Mn 2þ ions, leading to the formation of a large amount of insoluble Mn(III, IV) oxides. The biogenic Mn oxides were characterized by X-ray diffraction, FT-Infrared spectroscopy, elemental analysis, measurement of specific surface area, scanning electron microscopy, and measurement of zeta potential, in comparison with the synthetic Mn oxides. It was found that the biogenic Mn oxide is poorly crystalized birnessite, with higher porosity and much more weakly bounded Mn(II) on the surface than the synthetic Mn oxide. Cobalt(II) ions were sorbed and incorporated as Co(III) into the structure of the biogenic Mn oxide. Sorption efficiency in the biogenic Mn oxide was 5.6 times as high as that in the synthetic ones. Relation of the relased Mn 2þ ions to the immobilized Co suggested that Mn(IV) is preferentially used as oxidants over Mn(III) in the biogenic Mn oxide, and emphasized that the existence of Mn(III) in the biogenic Mn oxide activates the geochemical cycles of Mn and the other involved elements in environments.

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“…Formation of Mn sediments in natural environments is closely related to microbial Mn oxidizing activity (Francis et al ., ), because the rate is about 10 5 times faster than the chemical oxidation of Mn(II) at neutral pHs. Natural Mn oxides are porous and negatively charged at neutral pHs, therefore, easily capture transition metals and radioactive (Sasaki et al ., ).…”

Section: Introductionmentioning

confidence: 97%

Geochemical and Microbiological Analysis of Sambe Hot Springs, Shimane Prefecture, Japan

et al. 2013

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Microbiological contribution to the formation of the manganese deposits in Sambe hot springs, Shimane, was investigated in combination with water chemistry, characterization of sediments and microbial community structure. Analysis of bacterial and fungal community structure based on DNA extracted from a Mn-oxidizing enrichment culture indicated close matches with Pseudomonas putida, Phoma sp. and Plectosphaerella cucumerina, all Mn-oxidizing microorganisms. These sediments were poorly crystalline and formed at neutral pH values, which is characteristic of biogenic precipitates. The EPMA results demonstrated a positive correlation between Mn and Ba contents in well-crystalline Mn oxide grains. Substantial Ba contents were observed inside Mn oxide grains. These findings indicated that Ba contents in sediments are influenced by not only aqueous Ba 2+ concentrations but also crystallinity of biogenic birnessite. Barium would be incorporated in birnessite during biomineralization.

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Immobilization of Mn(II) Ions by a Mn-Oxidizing Fungus <I>Paraconiothyrium sp.-Like</I> Strain at Neutral pHs

Cited by 24 publications

References 14 publications

Novel <I>Paraconiothyrium</I> species on stone fruit trees and other woody hosts

Novel <I>Paraconiothyrium</I> species on stone fruit trees and other woody hosts

Sorption of Co<SUP>2+</SUP> Ions on the Biogenic Mn Oxide Produced by a Mn-Oxidizing Fungus, <I>Paraconiothyrium sp.</I> WL-2

Geochemical and Microbiological Analysis of Sambe Hot Springs, Shimane Prefecture, Japan

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