福井 学の低温研便り

北海道大学 低温科学研究所 微生物生態学分野
大学院:環境科学院 生物圏科学専攻 分子生物学コース

ロゼット

2012-05-22 09:07:54 | 四季折々
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背が高くなれなくても、生き残る術か?

12052201

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ちかごろの研究論文update120521

2012-05-21 22:27:42 | ちかごろの研究論文
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2012年以降

 

*. Fumiko Nemoto, Hisaya Kojima, Akifumi Ohtaka and Manabu Fukui. Filamentous sulfur-oxidizing bacteria of the genus Thioploca from Lake Tonle Sap in Cambodia. Aquatic Microbial Ecology. 印刷中.

 

*. Yuriko Higashioka, Hisaya Kojima, Miho Watanabe and Manabu Fukui. Desulfatitalea tepidiphila gen. nov., sp. nov., a novel sulfate-reducing bacterium isolated from tidal flat sediment. International Journal of Systematic and Evolutionary Microbiology. 印刷中.

 

*. Anne Maria Fiore-Donno, Akiko Kamono, Marianne Meyer, Martin Schnittler, Manabu Fukui and Thomas Cavalier-Smith. 18S rDNA phylogeny of Lanmproderma and allied genera (Stemonitales, Myxomycetes, Amoebozoa). PLoS ONE : 印刷中.

 

*. Hisaya Kojima, Masazumi Tsutsumi, Kanako Ishikawa, Tomoya Iwata, Marc Mussmann and Manabu Fukui. Distribution of putative denitrifying methane oxidizing bacteria of a freshwater lake. Systematic and Applied Microbiology. 印刷中. 

 

*. Yuriko Higashioka, Hisaya Kojima, and Manabu Fukui. Isolation and characterization of novel sulfate-reducing bacterium capable anaerobic degradation of p-xylene. Microbes and Environments. 印刷中.

 

*. Masanaori Fujii, Hisaya Kojima, Tomoya Iwata, Jotaro Urabe and Manabu Fukui. Dissolved organic carbon as major environmental factor affecting bacterioplankton communities in mountain lakes of eastern Japan. Microbial Ecology 63: 496-508. 2012.

 

*. Masazumi Tsutsumi, Hisaya Kojima, and Manabu Fukui. Vertical profiles of abundance and potential activity of methane-oxidizing bacteria in sediment of Lake Biwa, Japan. Microbes and Environments 27: 67-71. 2012..

 

2011

 

*. Fumiko Nemoto, Hisaya Kojima, and Manabu Fukui. Diversity of freshwater Thioploca species and their specific association with filamentous bacteria of the phylum Chloroflexi. Microbial Ecology 62753-764.2011.

 

*. Hisaya Kojima, and Manabu Fukui. Sulfuritalea hydrogenivorans gen. nov., sp. nov., a novel facultative autotroph isolated from a freshwater lake. International Journal of Systematic and Evolutionary Microbiology 61: 1651-1655. 2011.

 

*. Masazumi Tsutsumi, Tomoya Iwata, Hisaya Kojima, and Manabu Fukui. Spatiotemporal variations in an assemblage of closely related planktonic aerobic methanotrophs. Freshwater Biology 56: 342-351. 2011. 

 

*. Yuriko Higashioka, Hisaya Kojima and Manabu Fukui. Temperature-dependent differences in community structure of bacteria involved in degradation of petroleum hydrocarbons under sulfate-reducing conditions. Journal of Applied and Microbiology 110: 314-322. 2011. 

 

*. Kyoko Kubo, Katrin Knittel, Rudolf Amann, Manabu Fukui and Katsumi Matsuura. Sulfur-metabolizing bacteria populations in microbial mats of the Nakabusa hot spring, Japan. Systematic and Applied Microbiology 34: 293-302, 2011. 

 

2010

 

*. Hisaya Kojima, and Manabu Fukui. Sulfuricella denitrificans gen. nov., sp. nov., a novel sulfur-oxidizing autotroph isolated from a freshwater lake. International Journal of Systematic and Evolutionary Microbiology 60:2862-2866. 2010. 

 

*. Keiichi Tabuchi, Hisaya Kojima, and Manabu Fukui. Seasonal changes in organic matter mineralization in a sublittoral sediment and temperature-driven decoupling of key processes. Microbial Ecology 60: 551-560. 2010.

 

*. Masanaori Fujii, Yoshinori Takano, Hisaya Kojima, Tamotsu Hoshino, Ryoichi Tanaka and Manabu Fukui. Microbial community structure, pigment composition, and nitrogen source of red snow in Antarctica. Microbial Ecology 59: 466-4775.2010.

 

*. Anne Fiore-Donno, Akiko Kamono, Ema Chao, Manabu Fukui and Thomas Cavalier-Smith. Invalidation of hyperamoeba by transferring its species to other genera of Myxogastria. Journal of Eukaryotic Biology 52: 189-196. 2010.

 

2009 

 

*. Akiko Kamono, Hisaya Kojima, Jun Matsumoto, Kimitaka Kawamura and Manabu Fukui. Airborne Myxomycete spore: Detection using molecular techniques, Naturwissenschaften 96: 147-151.2009.

 

*. Masazumi Tsutsumi, Hisaya Kojima, Shigeru Uemura, Kiyomi Ono, Akihiro Sumida, Toshihiko Hara and Manabu Fukui. Structure and activity of soil-inhabiting methanotrophic communities in northern forest of Japan. Soil Biology and Biochemistry  41: 403-408.2009.

 

*. Yuriko Higashioka, Hisaya Kojima, Tatsunori Nakagawa, Shinya Sato and Manabu Fukui. A novel n-alkane-degrading bacterium as a minor member of p-xylene-degrading sulfate-reducing consortium. Biodegradation 20: 383-390.2009.  

 

*. Yuriko Higashioka, Hisaya Kojima, Shinya Sato, Manabu Fukui. Microbial community analysis at crude oil-contaminated soils targeting the 16S ribosomal RNA, xylM, C23O, and bcr genes. Journal of Applied and Microbiology, 107: 126-135. 2009.

 

*. Hisaya Kojima, Tomoya Iwata, and Manabu Fukui.  DNA-based analysis of planktonic methanotrophs in a stratified lake. Freshwater Biology 54: 1501-1509.2009.

 

*. Akiko Kamono, Jun Matsumoto, Hisaya Kojima, and Manabu Fukui. Characterization of myxomycete communities in soil by reverse transcription polymerase chain reaction (RT-PCR)-based method. Soil Biology and Biochemistry 41: 1324-1330. 2009.

 

*. Hisaya Kojima, Haruo Fukuhara and Manabu Fukui. Community structure of microorganisms asssociated with reddish-brown iron-rich snow. Systematic and Applied Microbiology 32: 429-437, 2009.

 


嫌気的メタン酸化

2012-05-17 19:42:00 | 学問
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嶋 盛吾さんとの出逢いは、1994年3月ドイツのハノーバーでの学会。あれから18年。嶋さんの研究の進展は凄まじい。

 

そして、今、低温科学研究所の客員教授をお願いすることになりました。大学院生の皆さんには、嶋先生から多くのことを吸収して欲しいものです。


 

120517shima


BBQ日和、かな?

2012-05-16 11:29:00 | 日記・エッセイ・コラム
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肌寒い日が続く札幌。夕方、キャンパス内で学生さんたちがBBQを楽しんでいる。香ばしい臭いが半径30m以上に拡散し、空腹の音を鳴らす。

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さてさて、明日は晴れるか?


ネイチャーフォト

2012-05-14 08:00:39 | 日記・エッセイ・コラム
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休日の低温研玄関前。何かのサークルでしょうか。花のマクロ撮影に挑んでいる小グループがおられました。風が強い日でしたので、構図をあれこれと決めたとしても、花びらが揺れてしまいます。満足のいくネイチャーフォトが撮れたでしょうか?

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特段の趣味を持たぬ身としては、納得がいくまでマクロ撮影している姿は羨望です。定年退職後のことを考えて、何か趣味でもと思っているところですが。


第13回低温研セミナー案内:嶋 盛吾先生

2012-05-13 00:59:57 | 講演会
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セミナーのご案内です。来聴歓迎です。

*****

講演者:嶋 盛吾 先生

(マックスプランク陸生微生物学研究所グループリーダー/

低温科学研究所 客員教授)

 

タイトル:「メタン醗酵と嫌気メタン酸化のエネルギー代謝」

 

日時:2012517日(木曜)16時から(1時間)

 

場所:新棟3階講堂

 

要旨:

メタンは温室効果ガスの一つであるが、微生物によって生成される一方で消費もされる。メタンの消費に関与する微生物はメタン酸化細菌と呼ばれ、好気的に行われることが従来知られて来た。しかし、近年、嫌気的条件下でメタンを酸化するプロセスが発見され、地球の炭素循環を再考する必要に迫られている。本セミナーでは、微生物による嫌気的メタンの酸化および生成について、最新の知見(Shima et al., Nature 481:98-101,2012)を交えて紹介する


糠漬け

2012-05-12 17:25:35 | 日記・エッセイ・コラム
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「発酵という食品保存技術は、気候が寒冷湿潤であるために乾燥や塩漬けや薫製に適さず、しかも長く不毛な冬に備えて大量の食料を保存する必要のある土地では特に貴重だった。<中略> 野菜に関しては、酢漬けと発酵とが重複する部分がかなりある。アルコールを酢酸以に変える微生物の働きそのものが一種の発酵である。すでにのべたように、酢漬けとは、微生物が生存できない酸性の環境を作り出すことによって食品を保存する方法である。野菜を発酵させるとは、このプロセスをもう一段進めて、野菜自身が酸を作り出すように条件を整えることである。」

 (スー・シェパード著『保存食品開発物語』より)

 

土曜の夕方、小腹が減る。グー。そんな時、オフィスのドアをトントンと叩く音。誰だろう? ひょいっとAさんの顔。ご自慢の糠漬けのお裾分けだ。

120512

Bさんから頂いたメロンを糠漬けにしたのだという。ポリッと一口。ちょうどいい塩加減に、乳酸発酵の産物としての旨味と酸味が広がっていく。彼の糠漬け作品の出来映えランキングでは、3位に入るだろうか?

 

Aさんには、学問と同様に『糠漬け道』を極めて頂きたいものだ。

 

冷え込む札幌の夕方。Aさんの糠漬けで、ほっこり気分に転ずる。感謝。

 


生き物の悲しみ

2012-05-11 10:50:12 | 学問
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「生態学とは、生き物の悲しみを知る学問である」

 

この言は、SF作家・花田智氏の心をとられてやまない。彼が学生時代、「生態学って、何ですか?」と浮遊歌人・渡辺泰徳先生に問うと、すかさず先生の口から出てきたとのこと。これは、四半世紀前の出来事。

 

その花田氏が早川書房からSF小説『天狼新星 SIRIUS: Hypernova』を出版するとのこと。是非とも読んでみたい。発売は、5月25日らしい。

 

ここにも、微生物の悲しみや喜びを知ろうとしている若き研究者がいる。

Kkubo1203

<久保響子助教>

 


雪氷の生態学

2012-05-10 22:26:09 | 学問
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低温科学70巻「雪氷の生態学」は、下記よりダウンロードできます。

 

http://www.lowtem.hokudai.ac.jp/lts.html

Snow_ecology2012

 


ちかごろの研究論文update120508

2012-05-08 22:15:00 | ちかごろの研究論文
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2012年以降

 

*. Yuriko Higashioka, Hisaya Kojima, Miho Watanabe and Manabu Fukui. Desulfatitalea tepidiphila gen. nov., sp. nov., a novel sulfate-reducing bacterium isolated from tidal flat sediment. International Journal of Systematic and Evolutionary Microbiology. 印刷中.

 

*. Anne Maria Fiore-Donno, Akiko Kamono, Marianne Meyer, Martin Schnittler, Manabu Fukui and Thomas Cavalier-Smith. 18S rDNA phylogeny of Lanmproderma and allied genera (Stemonitales, Myxomycetes, Amoebozoa). PLoS ONE : 印刷中.

 

*. Hisaya Kojima, Masazumi Tsutsumi, Kanako Ishikawa, Tomoya Iwata, Marc Mussmann and Manabu Fukui. Distribution of putative denitrifying methane oxidizing bacteria of a freshwater lake. Systematic and Applied Microbiology. 印刷中. 

 

*. Yuriko Higashioka, Hisaya Kojima, and Manabu Fukui. Isolation and characterization of novel sulfate-reducing bacterium capable anaerobic degradation of p-xylene. Microbes and Environments. 印刷中.

 

*. Masanaori Fujii, Hisaya Kojima, Tomoya Iwata, Jotaro Urabe and Manabu Fukui. Dissolved organic carbon as major environmental factor affecting bacterioplankton communities in mountain lakes of eastern Japan. Microbial Ecology 63: 496-508. 2012.

 

*. Masazumi Tsutsumi, Hisaya Kojima, and Manabu Fukui. Vertical profiles of abundance and potential activity of methane-oxidizing bacteria in sediment of Lake Biwa, Japan. Microbes and Environments 27: 67-71. 2012..

 

2011

 

*. Fumiko Nemoto, Hisaya Kojima, and Manabu Fukui. Diversity of freshwater Thioploca species and their specific association with filamentous bacteria of the phylum Chloroflexi. Microbial Ecology 62753-764.2011.

 

*. Hisaya Kojima, and Manabu Fukui. Sulfuritalea hydrogenivorans gen. nov., sp. nov., a novel facultative autotroph isolated from a freshwater lake. International Journal of Systematic and Evolutionary Microbiology 61: 1651-1655. 2011.

 

*. Masazumi Tsutsumi, Tomoya Iwata, Hisaya Kojima, and Manabu Fukui. Spatiotemporal variations in an assemblage of closely related planktonic aerobic methanotrophs. Freshwater Biology 56: 342-351. 2011. 

 

*. Yuriko Higashioka, Hisaya Kojima and Manabu Fukui. Temperature-dependent differences in community structure of bacteria involved in degradation of petroleum hydrocarbons under sulfate-reducing conditions. Journal of Applied and Microbiology 110: 314-322. 2011. 

 

*. Kyoko Kubo, Katrin Knittel, Rudolf Amann, Manabu Fukui and Katsumi Matsuura. Sulfur-metabolizing bacteria populations in microbial mats of the Nakabusa hot spring, Japan. Systematic and Applied Microbiology 34: 293-302, 2011. 

 

2010

 

*. Hisaya Kojima, and Manabu Fukui. Sulfuricella denitrificans gen. nov., sp. nov., a novel sulfur-oxidizing autotroph isolated from a freshwater lake. International Journal of Systematic and Evolutionary Microbiology 60:2862-2866. 2010. 

 

*. Keiichi Tabuchi, Hisaya Kojima, and Manabu Fukui. Seasonal changes in organic matter mineralization in a sublittoral sediment and temperature-driven decoupling of key processes. Microbial Ecology 60: 551-560. 2010.

 

*. Masanaori Fujii, Yoshinori Takano, Hisaya Kojima, Tamotsu Hoshino, Ryoichi Tanaka and Manabu Fukui. Microbial community structure, pigment composition, and nitrogen source of red snow in Antarctica. Microbial Ecology 59: 466-4775.2010.

 

*. Anne Fiore-Donno, Akiko Kamono, Ema Chao, Manabu Fukui and Thomas Cavalier-Smith. Invalidation of hyperamoeba by transferring its species to other genera of Myxogastria. Journal of Eukaryotic Biology 52: 189-196. 2010.

 

2009 

 

*. Akiko Kamono, Hisaya Kojima, Jun Matsumoto, Kimitaka Kawamura and Manabu Fukui. Airborne Myxomycete spore: Detection using molecular techniques, Naturwissenschaften 96: 147-151.2009.

 

*. Masazumi Tsutsumi, Hisaya Kojima, Shigeru Uemura, Kiyomi Ono, Akihiro Sumida, Toshihiko Hara and Manabu Fukui. Structure and activity of soil-inhabiting methanotrophic communities in northern forest of Japan. Soil Biology and Biochemistry, 41: 403-408.2009.

 

*. Yuriko Higashioka, Hisaya Kojima, Tatsunori Nakagawa, Shinya Sato and Manabu Fukui. A novel n-alkane-degrading bacterium as a minor member of p-xylene-degrading sulfate-reducing consortium. Biodegradation 20: 383-390.2009.  

 

*. Yuriko Higashioka, Hisaya Kojima, Shinya Sato, Manabu Fukui. Microbial community analysis at crude oil-contaminated soils targeting the 16S ribosomal RNA, xylM, C23O, and bcr genes. Journal of Applied and Microbiology, 107: 126-135. 2009.

 

*. Hisaya Kojima, Tomoya Iwata, and Manabu Fukui.  DNA-based analysis of planktonic methanotrophs in a stratified lake. Freshwater Biology 54: 1501-1509.2009.

 

*. Akiko Kamono, Jun Matsumoto, Hisaya Kojima, and Manabu Fukui. Characterization of myxomycete communities in soil by reverse transcription polymerase chain reaction (RT-PCR)-based method. Soil Biology and Biochemistry 41: 1324-1330. 2009.

 

*. Hisaya Kojima, Haruo Fukuhara and Manabu Fukui. Community structure of microorganisms asssociated with reddish-brown iron-rich snow. Systematic and Applied Microbiology 32: 429-437, 2009.

 


みつせん

2012-05-07 07:56:00 | 教育
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「桜の葉の基部を見てごらん。一対の蜜腺があるよね。これが桜の特徴の一つだ」

 

と教えてくれたのは、植物分類学の森田先生。あれから30年以上経ても、桜が咲く頃、このことを思い出す。

120507

札幌。桜の季節が過ぎれば、ライラックが開花し始める。