Identification of a New Ice-nucleating Bacterium and Its Ice Nucleation Properties

Obata, Hitoshi; Takinami, Kouji; Tanishita, Junichi; Hasegawa, Yoshie; Kawate, Shohei; Tokuyama, Tai; Ueno, Tomonaga

doi:10.1080/00021369.1990.10870030

Cited by 6 publications

(7 citation statements)

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“…The expression of BINMs is an exclusive property of certain bacterial species. It has been reported for a wide range of strains in the P. syringae species complex (Lindow et al, 1982;Berge et al, 2014), P. fluorescens and borealis (Fall and Schnell, 1985;Obata et al, 1987;Foreman et al, 2013), Erwinia uredovora (Obata et al, 1990a), Pantoea agglomerans (formerly called E. herbicola; Phelps et al, 1986), Pantoea ananatis (Coutinho and Venter, 2009), Xanthomonas campestris (Kim et al, 1987), a Pseudoxanthomonas sp. (Joly et al, 2013), and more.…”

Section: Previous Findings On Biological Inmsmentioning

confidence: 99%

Ice nucleation by water-soluble macromolecules

et al. 2015

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Cloud glaciation is critically important for the global radiation budget (albedo) and for initiation of precipitation. But the freezing of pure water droplets requires cooling to temperatures as low as 235 K. Freezing at higher temperatures requires the presence of an ice nucleator, which serves as a template for arranging water molecules in an ice-like manner. It is often assumed that these ice nucleators have to be insoluble particles. We point out that also free macromolecules which are dissolved in water can efficiently induce ice nucleation: the size of such ice nucleating macromolecules (INMs) is in the range of nanometers, corresponding to the size of the critical ice embryo. As the latter is temperature-dependent, we see a correlation between the size of INMs and the ice nucleation temperature as predicted by classical nucleation theory. Different types of INMs have been found in a wide range of biological species and comprise a variety of chemical structures including proteins, saccharides, and lipids. Our investigation of the fungal species Acremonium implicatum, Isaria farinosa, and Mortierella alpina shows that their ice nucleation activity is caused by proteinaceous water-soluble INMs. We combine these new results and literature data on INMs from fungi, bacteria, and pollen with theoretical calculations to develop a chemical in-terpretation of ice nucleation and water-soluble INMs. This has atmospheric implications since many of these INMs can be released by fragmentation of the carrier cell and subsequently may be distributed independently. Up to now, this process has not been accounted for in atmospheric models

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Section: Previous Findings On Biological Inmsmentioning

confidence: 99%

Ice nucleation by water-soluble macromolecules

et al. 2015

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“…Pantoea ananatis is one of only a few species of bacteria shown to contain ice-nucleating strains (Abe et al, 1989;Obata et al, 1990). An ice nucleation active (INA) gene, inaA, has been sequenced and found to be similar to that of Pseudomonas species (Abe et al, 1989).…”

Section: Pantoea Ananatis As An Epiphytementioning

confidence: 99%

“…Examples of frostsensitive plants are Eucalyptus, poplar, pea, pome and stone fruit trees (Lindow, 1983). Pantoea ananatis has been found to be the dominant INA bacterium on maize leaves in China (Sun et al 2005), and has also been reported to cause frost injury to mulberry (Takahashi et al, 1995), tea (Goto et al, 1988), strawberry (Obata et al, 1990), apricot (Zhao et al, 2007 and citrus (Wang et al, 2008). The freezing injury caused by P. ananatis in poplar has resulted in an increased incidence of infection by the fungal pathogen Dothiorella gregaria in China (DePeng et al, 1999;Xiang et al, 2001;Zeng et al, 1999).…”

Section: Pantoea Ananatis As An Epiphytementioning

confidence: 99%

Pantoea ananatis: an unconventional plant pathogen

Coutinho

Venter

2009

Molecular Plant Pathology

256

199

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“…For instance, Pseudomonas syringae is a well-known bacterial species that produces ice nucleation proteins [ 22 – 24 ] and promotes nucleation in the atmosphere. Similarly, several ice-nucleation active bacteria have been reported [ 25 – 28 ] and isolated from clouds [ 29 , 30 ] and precipitation, including rainfall [ 9 ] and snowfall [ 9 , 31 , 32 ]. Thus, bacteria likely play a role and are involved in precipitation, which is generally referred to as “bioprecipitation” [ 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Falling bacterial communities from the atmosphere

Woo

Yamamoto

2020

Environmental Microbiome

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Background Bacteria emitted into the atmosphere eventually settle to the pedosphere via sedimentation (dry deposition) or precipitation (wet deposition), constituting a part of the global cycling of substances on Earth, including the water cycle. In this study, we aim to investigate the taxonomic compositions and flux densities of bacterial deposition, for which little is known regarding the relative contributions of each mode of atmospheric deposition, the taxonomic structures and memberships, and the aerodynamic properties in the atmosphere. Results Precipitation was found to dominate atmospheric bacterial deposition, contributing to 95% of the total flux density at our sampling site in Korea, while bacterial communities in precipitation were significantly different from those in sedimentation, in terms of both their structures and memberships. Large aerodynamic diameters of atmospheric bacteria were observed, with an annual mean of 8.84 μm, which appears to be related to their large sedimentation velocities, with an annual mean of 1.72 cm s− 1 for all bacterial taxa combined. The observed mean sedimentation velocity for atmospheric bacteria was larger than the previously reported mean sedimentation velocities for fungi and plants. Conclusions Large aerodynamic diameters of atmospheric bacteria, which are likely due to the aggregation and/or attachment to other larger particles, are thought to contribute to large sedimentation velocities, high efficiencies as cloud nuclei, and large amounts of precipitation of atmospheric bacteria. Moreover, the different microbiotas between precipitation and sedimentation might indicate specific bacterial involvement and/or selective bacterial growth in clouds. Overall, our findings add novel insight into how bacteria participate in atmospheric processes and material circulations, including hydrological circulation, on Earth.

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Identification of a New Ice-nucleating Bacterium and Its Ice Nucleation Properties

Cited by 6 publications

References 1 publication

Ice nucleation by water-soluble macromolecules

Ice nucleation by water-soluble macromolecules

Pantoea ananatis: an unconventional plant pathogen

Falling bacterial communities from the atmosphere

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