Cold-loving microbes, plants, and animals—fundamental and applied aspects

Margesin, Rosa; Neuner, Gilbert; Storey, Kenneth B.

doi:10.1007/s00114-006-0162-6

Cited by 207 publications

(101 citation statements)

References 181 publications

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“…It is well known that microbes may experience physiological changes to become tolerant to cold conditions, e.g. maintenance of membrane fluidity or synthesis of cold-tolerant enzymes (Margesin et al 2007). Moreover, microbial community structure changes under contrasting temperatures regimes, favoring microbes better adapted to the new temperatures (Zogg et al 1997;Pettersson and Bååth 2003;Firestone 2004, 2006).…”

Section: Discussionmentioning

confidence: 99%

Plant-soil interactions and acclimation to temperature of microbial-mediated soil respiration may affect predictions of soil CO2 efflux

Yuste

Baldocchi

2009

Biogeochemistry

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It is well known that microbial-mediated soil respiration, the major source of CO 2 from terrestrial ecosystems, is sensitive to temperature. Here, we hypothesize that some mechanisms, such as acclimation of microbial respiration to temperature and/or regulation by plant fresh C inputs of the temperature sensitivity of decomposition of soil organic matter (SOM), should be taken into account to predict soil respiration correctly. Specifically, two hypotheses were tested: (1) under warm conditions, temperature sensitivity (Q 10 ) and basal rates of microbial-mediated soil respiration (Bs 20, respiration at a given temperature) would be primarily subjected to presence/absence of plant fresh C inputs; and (2) under cold conditions, where labile C depletion occurred more slowly, microbial-mediated soil respiration could adjust its optimal temperatures to colder temperatures (acclimation), resulting in a net increase of respiration rates for a given temperature (Bs 20 ). For this purpose, intact soil cores from an oak savanna ecosystem were incubated with sufficient water supply at two contrasting temperatures (10 and 30°C) during 140 days. To study temperature sensitivity of soil respiration, short-term temperature cycles (from 5 to 40°C at 8 h steps) were applied periodically to the soils. Our results confirmed both hypotheses. Under warm conditions ANCOVA and likelihood ratio tests confirmed that both Q 10 and Bs 20 decreased significantly during the incubation. Further addition of glucose at the end of the incubation period increased Bs 20 and Q 10 to initial values. The observed decrease in temperature sensitivity (Q 10 ) in absence of labile C disagrees with the broadly accepted fact that temperature sensitivity of the process increases as quality of the substrate decreases. Our experiment also shows that after 2 months of incubation cold-incubated soils doubled the rates of respiration at cold temperatures causing a strong increase in basal respiration rates (Bs 20 ). This suggest that microbial community may have up-regulated their metabolism at cold conditions (cold-acclimation), which also disagrees with most observations to date. The manuscript discusses those two apparent contradictions: the decrease in temperature sensitivity in absence of labile C and the increase in microbial-mediated soil respiration rates at cold temperatures. While this is only a case study, the trends observed could open the controversy over the validity of current soil respiration models.

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Section: Discussionmentioning

confidence: 99%

Plant-soil interactions and acclimation to temperature of microbial-mediated soil respiration may affect predictions of soil CO2 efflux

Yuste

Baldocchi

2009

Biogeochemistry

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“…they are ectothermic. These organisms have managed to survive in temperature regimes below 08C via two basic strategies: freeze avoidance and freeze tolerance (Margesin et al 2007). Freeze avoidance involves low molecular mass substances, such as sugars and polyols (e.g.…”

Section: Molecular Biomimetics Of Proteins: Four Case Studiesmentioning

confidence: 99%

“…by ice-nucleating proteins (Duman 2001). Since the first studies on arctic fishes in the 1950s, it has been known that certain animals, microbes and plants can survive fully functional at temperatures as low as K308C with the help of AFPs (Scholander et al 1957;Griffith et al 2005;Margesin et al 2007). …”

Section: Molecular Biomimetics Of Proteins: Four Case Studiesmentioning

confidence: 99%

Mimicking biopolymers on a molecular scale: nano(bio)technology based on engineered proteins

Grunwald

Rischka

Kast

et al. 2009

Phil. Trans. R. Soc. A.

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Proteins are ubiquitous biopolymers that adopt distinct three-dimensional structures and fulfil a multitude of elementary functions in organisms. Recent systematic studies in molecular biology and biotechnology have improved the understanding of basic functional and architectural principles of proteins, making them attractive candidates as concept generators for technological development in material science, particularly in biomedicine and nano(bio)technology. This paper highlights the potential of molecular biomimetics in mimicking high-performance proteins and provides concepts for applications in four case studies, i.e. spider silk, antifreeze proteins, blue mussel adhesive proteins and viral ion channels.

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“…Various organisms that can avoid the freezing are some types of fishes, amphibians and insects Margesin et al, 2007 . Such species can supercool their bodies so they can weather the long and cold winters, with temperatures that can go as low as -45 , and still survive.…”

Section: Introductionmentioning

confidence: 99%

Anti-Ice Nucleation Activities of Adenine and Poly-A Nucleotides

Tagawa

Kawahara

2017

Biocontrol Sci.

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Most of the ice nucleation activity inhibitor reported so far are compounds processing the hydroxyl group such as the polyphenolic derivative. After examining the anti-ice nucleation activity of the purine base, the highest compound is theophylline, and the activity showed 3.80 0.32 at a final concentration of 0.1 mg/ml. We found that the activity of the adenine which was essential to genome information DNA was higher than that of guanine. After examining effect of adenine concentration, high activity showed 9.1 1.2 and became approximately constant above 0.1 mg/ ml. This active rise is a result of effect of concentration under alkaline condition. Therefore after examining effect of pH on the activity of adenine, this activity rose under an alkaline condition. The active rise predicts that an electric charge of adenine is a factor. Among four kinds of nucleotide of 6 bases, poly-A nucleotide was higher and showed 1.33 0.42 at a final concentration of 0.1 mg/ml. This activity of poly-A were proportional to the number of the base. From these results, it was suggested that the poly-A and adenine could be able to be applied to the field to preserve the blood and tissue which differentiated in the generative medicine.

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Cold-loving microbes, plants, and animals—fundamental and applied aspects

Cited by 207 publications

References 181 publications

Plant-soil interactions and acclimation to temperature of microbial-mediated soil respiration may affect predictions of soil CO2 efflux

Plant-soil interactions and acclimation to temperature of microbial-mediated soil respiration may affect predictions of soil CO2 efflux

Mimicking biopolymers on a molecular scale: nano(bio)technology based on engineered proteins

Anti-Ice Nucleation Activities of Adenine and Poly-A Nucleotides

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