Species of Nostoc Vaucher Occurring in the Sonoran Desert in Arizona

Cameron, Roy E.

doi:10.2307/3223790

Cited by 84 publications

(39 citation statements)

References 3 publications

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“…Signals with identical chemical shifts to mycosporine-glycine [50] were observed in the 273-Da MAA, indicating the presence of the oxocarbonyl-type chromophore (C1, 2,3,4,5,6,7,8). In addition, signals with identical chemical shifts to γ-aminobutyric acid (C9, 10,11,12) were observed.…”

Section: Maldi-tof Ms/msmentioning

confidence: 66%

“…N. commune colonies are subjected to frequent cycles of desiccation and wetting. The desiccated colonies show little to no metabolic activity, yet they retain the ability to grow for more than 100 years [3,4]. Upon rehydration, N. commune cells rapidly recover respiration and photosynthesis [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In addition to extreme desiccation tolerance, N. commune colonies are exposed to direct solar radiation and can tolerate UV radiation stress [13,14]. The desiccated N. commune has extreme longevity [3,4]; antioxidants protect biomolecules from oxidation and are thought to be involved in the mechanisms of anhydrobiosis in N. commune [15]. N. commune has two types of UV-absorbing pigments which are scytonemin and mycosporine-like amino acids (MAAs) [14,16].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of the chemical diversity of glycosylated mycosporine-like amino acids in the terrestrial cyanobacterium Nostoc commune

Nazifi

Wada

Asano

et al. 2015

Journal of Photochemistry and Photobiology B: Biology

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Highlights: Glycosylated MAAs have been characterized in two genotypes of Nostoc commune. The A genotype produces β-Ara-porphyra-334 (478 Da) with λ max at 335 nm. The B genotype produces the hybrid MAA (1050 Da) with λ max at 312 nm. 2 AbstractMycosporine-like amino acids (MAAs) are UV-absorbing pigments, and structurally unique glycosylated MAAs are found in the terrestrial cyanobacterium Nostoc commune. In this study, we examined two genotypes of Nostoc commune colonies with different water extract UV-absorption spectra. We found structurally distinct MAAs in each genotype. The water extract from genotype A showed a UV-absorbing spectrum with an absorption maximum at

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Section: Maldi-tof Ms/msmentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of the chemical diversity of glycosylated mycosporine-like amino acids in the terrestrial cyanobacterium Nostoc commune

Nazifi

Wada

Asano

et al. 2015

Journal of Photochemistry and Photobiology B: Biology

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“…Some past reports showed that there was a correlation between the drought tolerance and freeze tolerance, and there was non frozen water in the cyanobacterium cells. However, there has been no reports about the relationship between the desiccation process of the cell and its period as to whether the shortterm desiccation of the cell by the high vacuum leads to extinction of the cyanobacteria (Cameron, 1962;Katoh et al, 2003;Lin et al, 2004;Yoshimura et al, 2006). The amount of dry weight of Nostoc sp.…”

Section: Revitalization and Recovery Of The Growth Of Nostoc Sp Hk-0mentioning

confidence: 99%

Growth of terrestrial cyanobacterium, Nostoc sp., on Martian Regolith Simulant and its vacuum tolerance

et al. 2008

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The growth of terrestrial cyanobacterium, Nostoc sp., on the Martian Regolith Simulant (MRS) and its vacuum tolerance were studied as one of our challenges in this century to inhabit Mars. The viability of the tested cyanobacteria was evaluated by microscopic observation after staining by fluorescein diacetate (FDA). The general terrestrial cyanobacterial lump collected from the ground showed a significantly high tolerance to a high vacuum environment (10 -5 Pa) for over one year. To scientifically elucidate its high tolerance function, Nostoc sp. HK-01 was used as another suitable scientific material for this study. After exposure to the high vacuum environment (10 -5 Pa) for two weeks, Nostoc sp. HK-01 began to grow again. Some of it was also re-incubated again with a liquid culture medium. The A'MED (Arai's Mars Ecosystem Dome) is designed to be installed on Mars for agricultural production. A'MED was useful to conduct our study. We performed the fundamental experiment using the MRS. Nostoc sp. HK-01 was found to grow for over 140 days along with having the normal function of chlorophyll synthesis on the MRS. These results show the possibility that cyanobacteria could adapt to the MRS, and grow under the low pressure environment expected on Mars.

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“…This phenomenon is termed anhydrobiosis (Billi and Potts, 2002;Clegg, 2001;Crowe, 2002;Crowe et al, 1998). The terrestrial cyanobacterium Nostoc commune can remain viable for over 100 years in a desiccated state (Cameron, 1962;Lipman, 1941). Thus, N. commune is considered an anhydrobiotic microorganism with oxygenic photosynthetic capabilities.…”

Section: Introductionmentioning

confidence: 99%

Characterization of extracellular matrix components from the desiccation-tolerant cyanobacterium <i>Nostoc commune</i>

Inoue-Sakamoto

Tanji

Yamaba

et al. 2018

J. Gen. Appl. Microbiol.

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The terrestrial cyanobacterium Nostoc commune forms macroscopic colonies in its natural habitats, and these colonies consist of both cellular filaments and massive extracellular matrixes. In this study, the biochemical features of the extracellular matrix components were investigated. Naturally growing N. commune was tolerant to desiccation, and produced massive extracellular polysaccharides that contained both neutral sugars and glucuronic acid as constituent monosaccharides. The extracellular polysaccharide contents and desiccation tolerance were compared in laboratory culture strains of Nostoc species. The laboratory culture of N. commune strain KU002 was sensitive to desiccation and produced smaller amounts of extracellular polysaccharides, unlike the field-isolated naturally growing colonies. Nostoc punctiforme strain M-15, which is genetically closed to N. commune, was able to tolerate desiccation, although the other Nostoc strains were desiccation-sensitive. A laboratory culture strain of the aquatic cyanobacterium Nostoc sphaericum produced massive extracellular polysaccharides but was sensitive to desiccation, suggesting that extracellular matrix production is not enough to make this strain tolerant to desiccation. WspA (water stress protein) and SodF (superoxide dismutase) were found to be characteristic protein components of the extracellular matrix of N. commune. Because the WspA proteins were heterogeneous, the wspA genes were highly diverse among the different genotypes of N. commune, although the sodF gene was rather conservative. The heterogeneity of the WspA proteins suggests their complex roles in the environmental adaptation mechanism in N. commune.

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Species of Nostoc Vaucher Occurring in the Sonoran Desert in Arizona

Cited by 84 publications

References 3 publications

Characterization of the chemical diversity of glycosylated mycosporine-like amino acids in the terrestrial cyanobacterium Nostoc commune

Characterization of the chemical diversity of glycosylated mycosporine-like amino acids in the terrestrial cyanobacterium Nostoc commune

Growth of terrestrial cyanobacterium, Nostoc sp., on Martian Regolith Simulant and its vacuum tolerance

Characterization of extracellular matrix components from the desiccation-tolerant cyanobacterium <i>Nostoc commune</i>

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