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

イチョウ並木2012

2012-11-10 20:41:44 | 四季折々
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週末の北大キャンパス。ゲストで賑わうイチョウ並木。

12111001

12111002

12111003

 

彼の地で研究に励んでいるAさんにも見せてあげたい。

 


粘る<追記>

2012-11-07 01:31:00 | 研究
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粘菌(変形菌)は、かつて博物学者・南方熊楠が魅せられた生き物。落ち葉などの表面に子実体を形成し、好適条件下で多核の変形体に身を変えて移動する。そして、乾燥した条件では、再び子実体へ。子実体は、いつしか弾けて内包された胞子が空中を舞って新天地へと向かう。

 

専門学術雑誌Soil Biology & Biochemistryに掲載された「土壌中の変形菌」に関する総説(Stephenson et al., SBB 43: 2237-2242, 2011)には、こんな記述がある。

 

The dark-spored clade, best represented in public databases, has been targeted in three pioneering studies. Kamono and Fukui (2006) used a short SSU fragment (~460 bp) to investigate the Physarales (one of the two dark-spored orders).

 

加茂野さんの研究がいかにパイオニア研究であった。上記の総説中で、何カ所も加茂野さんの下記3論文が引用されている。極めて理学的な研究なのだが、今後森林生態系における粘菌を代表とする原生生物の生理生態研究が加速されるに違いない。

 

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

 

*. 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.

 

*. Akiko Kamono and Manabu Fukui. Rapid PCR-based method for detection and differentaion of Didymiaceae and Physaraceae (Myxomycetes) in environmental samples. Journal of Microbiological Methods 67:496-506. 2006

 

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200111月。山梨県山中湖近くの三国山にて。研究をはじめた頃の加茂野さん(大学4年)。>


粘る

2012-11-06 00:20:25 | 研究
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加茂野晃子さん(卒業生)の粘菌(変形菌)に関する論文が受理されました。幾多の苦難を乗り越えて、粘りに粘った力作です。

 

2007年から3年間行ったカバリエ・スミス教授(英国・オックスフォード大学)とアン・マリーさんとの共同研究の成果です(王立協会の2国間国際共同研究)。日英を互いに行き来して、北海道の雨竜研究林、フランスアルプス、そしてスコットランドの草地の土壌中に生息する変形菌の多様性を土壌から抽出したRNAで解析した結果です。いずれの調査地でも、残雪期に訪れて、積雪下や融雪後土壌を採取し、変形菌の多様性に対する雪の影響を調べています。必ずしも寒さに対して強いわけではない加茂野さんですが、持ち前の粘りと情熱で好雪性変形菌に対する研究態度は学ぶべきものがあります。さらに、彼女の解析の緻密さも一流です。

 

少し時間はかかりましたが、この研究プロジェクトでは前人未踏の成果が得られたと思います。最終的には、3報の論文が誕生し、プロジェクトとしては成功したと言って良いでしょう。

12110601

加茂野さんの今後の研究に期待しております!

 

*. Akiko Kamono, Marianne Meyer, Thomas Cavalier-Smith, Manabu Fukui and Anne Maria Fiore-Donno. Exploring slime mould diversity in high altitude forests and grasslands by environmental RNA analysis. FEMS Microbiology Ecology. 印刷中.

 

<英国王立協会2国間国際共同研究>

課題名:好雪性変形菌の分子系統解析および土壌における多様性(2007~2010


ちかごろの研究論文update121105

2012-11-05 20:46:00 | ちかごろの研究論文
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2012年以降

 

*. Akiko Kamono, Marianne Meyer, Thomas Cavalier-Smith, Manabu Fukui and Anne Maria Fiore-Donno. Exploring slime mould diversity in high altitude forests and grasslands by environmental RNA analysis. FEMS Microbiology Ecology 印刷中.

 

*. Yoshinori Takano, Jonathan James Tyler, Hisaya Kojima, Yusuke Yokoyama, Yukiko Tanabe, Takaharu Sato, Nanako O. Ogawa, Naohiko Ohkouchi, and Manabu Fukui. Holocene lake developments and glacial-isostatic uplift at Lake Skallen and Lake Oyako, Luetzow-Holm Bay, east Antarctica: based on biogeochemical facies and molecular signatures. Applied Geochemistry. 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.

 

*. Tomohiro Watanabe, Hisaya Kojima, and Manabu Fukui. Draft genome sequence of a psychrotolerant sulfur-oxidizing bacterium Sulfuricella denitrificans skB26 and proteomic insights into cold adaptation. Applied and Environmental Microbiology 78: 6545-6549. 2012.

 

*. 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 66: 295-300. 2012.

 

*. 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  7: e35359. 2012.

 

*. 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. 35: 233-238. 2012. 

 

*. Yuriko Higashioka, Hisaya Kojima, and Manabu Fukui. Isolation and characterization of novel sulfate-reducing bacterium capable anaerobic degradation of p-xylene. Microbes and Environments 27: 273-277. 2012.

 

*. 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.