Characterization of Cold- and High-Pressure-Active Polygalacturonases from a Deep-Sea Yeast,<i>Cryptococcus liquefaciens</i>Strain N6

Abe, Fumiyoshi; Minegishi, Hiroaki; Miura, Takeshi; Nagahama, Takahiko; Usami, Ron; Horikoshi, Koki

doi:10.1271/bbb.70.296

Cited by 37 publications

(15 citation statements)

References 11 publications

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“…Two novel and active endopolygalacturonases at 0–10°C were purified from the culture supernatant of a deep-sea yeast Cryptococcus sp. which was isolated from the Japan Trench at a depth of 4500–6500 m (Miura et al 2001; Abe et al 2006). The hydrolytic activity of PGases remained almost unchanged up to a hydrostatic pressure of 100 MPa at 24°C.…”

Section: Cold-adapted Fungi and Their Living Strategiesmentioning

confidence: 99%

Living strategy of cold-adapted fungi with the reference to several representative species

et al. 2017

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Our planet is dominant with cold environments that harbour enormously diverse cold-adapted fungi comprising representatives of all phyla. Investigation based on culture-dependent and independent methods has demonstrated that cold-adapted fungi are cosmopolitan and occur in diverse habitants and substrates. They live as saprobes, symbionts, plant and animal parasites and pathogens to perform crucial functions in different ecosystems. Pseudogymnoascus destructans caused bat white-nose syndrome and Ophiocordyceps sinensis as Chinese medicine are the representative species that have significantly ecological and economic significance. Adaptation to cold niches has made this group of fungi a fascinating resource for the discovery of novel enzymes and secondary metabolites for biotechnological and pharmaceutical uses. This review provides the current understanding of living strategy and ecological functions of cold-adapted fungi, with particular emphasis on how those fungi overcome the extreme low temperature and perform their ecological function.

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Section: Cold-adapted Fungi and Their Living Strategiesmentioning

confidence: 99%

Living strategy of cold-adapted fungi with the reference to several representative species

et al. 2017

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“…Cryptococcus terreus and Cryptococcus terricola may be useful in the biodegradation of phenolic compounds, even in cold environments (Bergauer et al 2005). Other species can be used as sources of enzymes with particular characteristics, for example, cold-and high-pressure-tolerant polygalacturonases from the deep-sea yeast Cryptococcus liquefaciens (Abe et al 2006). Tremellomycetous yeasts, for example Cryptococcus albidus and Cryptococcus laurentii, may be used in the biocontrol of plant-pathogenic fungi, for example Botrytis, and to reduce postharvesting decay of fruits .…”

Section: Biotechnological Applicationsmentioning

confidence: 99%

12 Tremellomycetes and Related Groups

Weiß

Bauer

Sampaio

et al. 2014

Systematics and Evolution

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“…A Mn(II)‐oxidizing deep‐sea bacterium was demonstrated to have potential application in multiple heavy‐metal removing systems (Wang et al , ). One of the yeast strains, N6 belonging to Cryptococcus liquefaciens (Abe et al , ), isolated from deep‐sea sediments of the Japan Trench was demonstrated to tolerate very high concentrations of Cu, which was triggered by production of an antioxidant enzyme, superoxide dismutase, as a defensive mechanism (Abe et al , ). The greater capacity of deep‐sea isolates towards metal tolerance abilities may be attributed to their ability to survive under extreme conditions by expression of genes involved in combating these stress mechanisms (Abe and Minegishi, ; Singh et al , ).…”

Section: Introductionmentioning

confidence: 99%

Heavy metal tolerance in the psychrotolerant Cryptococcus sp. isolated from deep‐sea sediments of the Central Indian Basin

Singh

Raghukumar

Parvatkar

et al. 2013

Yeast

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A deep-sea isolate of the psychrotolerant yeast Cryptococcus sp. (NIOCC#PY13) obtained from polymetallic nodule-bearing sediments of the Central Indian Basin was examined for its capacity to grow in the presence of various concentrations of the heavy metal salts i.e., ZnSO 4 , CuSO 4 , Pb(CH 3 COO) 2 and CdCl 2 . It demonstrated considerable growth in the presence of 100 mg/l concentrations of the above-mentioned four heavy metal salts both at 30 C and 15 C. This strain tolerated comparatively higher levels of these four metal salts than other deep-sea and terrestrial yeast isolates belonging to Cryptococcus, Rhodotorula, Rhodosporidium and Sporidiobolus spp. Optimum pH for growth of this isolate was in the range of 6-8 in the presence of heavy metal salts at these two temperatures. Scanning electron microscopic (SEM) studies exhibited altered cell surface morphology of the cells under the influence of heavy metals compared to that with control. The adsorption of heavy metals to the cells was demonstrated by FTIR and EDAX analysis. As evidenced by atomic absorption spectrophotometric (AAS) analysis, about 30-90% of the heavy metals were removed from the culture supernatant after 4 days of growth at 30C. This deep-sea yeast isolate appears to be a potential candidate for bioremediation of metal-contaminated sites. Moreover, its metal tolerance properties provide a significant insight into its ecological role and adaptations to growth in such extreme conditions.

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Characterization of Cold- and High-Pressure-Active Polygalacturonases from a Deep-Sea Yeast,Cryptococcus liquefaciensStrain N6

Cited by 37 publications

References 11 publications

Living strategy of cold-adapted fungi with the reference to several representative species

Living strategy of cold-adapted fungi with the reference to several representative species

12 Tremellomycetes and Related Groups

Heavy metal tolerance in the psychrotolerant Cryptococcus sp. isolated from deep‐sea sediments of the Central Indian Basin

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