出逢い。常に大切にしたいもの。人との出逢いで、人生が大きく変わることもある。
*
歓送の季節。ファカルティハウス「エンレイソウ」にて、大学院生の活動を支援してくださっているGCOEユニットのAさんを送る会。
Aさんの長く栄えある未来を期待して、記念写真。これまでいろいろとありがとうございました。
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桜プリン。桜の葉で煮出した抽出液にミルクとゼラチンを入れて固めたプリン。
塩漬けの桜にほのかな期待を込めながら、艶やかな白いプリンにスプーンをあてる。数センチメートルほど、表面を滑走させながら、やさしく深みに入れる。
すくいあげたプリンを口の中へ誘うと、ほのかに桜のかほり漂いながら、ミルクの柔らかな味が口に広がる。恐る恐る、一片を噛むと、その程よい弾力が心弾ませる。
春の心に誘われながら、スプーンでプリンを掘り下げる。<o:p></o:p>
<o:p> 
おお、プリンの下から粒小豆たちが顔を出す。その餡と桜プリンのハーモーニーが瞬く間に桜満開の春へと誘う。
そして、塩漬けの桜が、まだ凍てつく北国の夜空を次第に解かしてゆく。<o:p></o:p>
<o:p> 
おうちごはんのお店「卯和」で頂ける、桜プリン。心が打ちのめされた時に、訪れたい食堂だ。
２月１７日と１８日、環境科学院大講堂にて、生物圏科学専攻修士論文発表会が開催されました。
当研究室からは、AさんとBさんが１８日午後に発表。２年間の研究の集大成を披露いたしました。
終了後、夕方18時から、札幌駅南口前の居酒屋で「打ち上げコンパ」。この２年間の思い出を語るAさんとBさん。
その一言一言を感慨深げに聞き入る、先輩のCさん。思わず、「よしよし、かわい～後輩たちよ」と労いの言葉をかける。
さあ、笠原先生！ 我々は、一次会で失礼いたしましょう。二次会はご存分に！
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小島久弥さんが、淡水湖沼の嫌気的な湖水から新属の脱窒硫黄酸化細菌を発見。至適温度が２２℃で、元素状硫黄やチオ硫酸塩の酸化能を有する。硫黄酸化の際に、電子受容体として硝酸塩を利用し、窒素にまで変換する。つまり、湖沼生態系からの窒素除去に寄与していると考えられる。<o:p></o:p>
<o:p> </o:p>
その新規微生物名は、Sulfuricella denitrificans 。詳細は、”International Journal of Systematic and Evolutionary Microbiology”で（オンラインで公開）。<o:p></o:p>
<o:p> </o:p>
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.
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<o:p></o:p>
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<o:p></o:p>
加茂野晃子さんを中心にして、オックスフォード大学動物学教室のCAVALIER-SMITHさんとFIORE-DONNOさんとともに行った共同研究の成果の一部がオンラインで公開されました（英国王立協会２国間国際共同研究事業）。<o:p></o:p>
<o:p> </o:p>
ANNA MARIA FIORE-DONNO, AKIKO KAMONO, EMA E. CHAO, MANABU FUKUI and THOMAS CAVALIER-SMITH.<o:p></o:p> Invalidation of Hyperamoeba by Transferring its Species to Other Genera of Myxogastria.<o:p></o:p> Journal of Eukaryotic Microbiology<o:p></o:p>
<o:p> </o:p>
ABSTRACT. The genus Hyperamoeba Alexeieff, 1923 was established to accommodate an aerobic amoeba exhibiting three life stages?amoeba, flagellate, and cyst. As more species/strains were isolated, it became increasingly evident from small subunit (SSU) gene phylogenies and ultrastructure that Hyperamoeba is polyphyletic and its species occupy different positions within the class Myxogastria. To pinpoint Hyperamoeba strains within other myxogastrid genera we aligned numerous myxogastrid sequences: whole small subunit ribosomal (SSU or 18S rRNA) gene for 50 dark-spored (i.e. Stemonitida and Physarida) Myxogastria (including a new "Hyperamoeba"/Didymium sequence) and a ?400-bp SSU fragment for 147 isolates assigned to 10 genera of the order Physarida. Phylogenetic analyses show unambiguously that the type species Hyperamoeba flagellata is a Physarum (Physarum flagellatum comb. nov.) as it nests among other Physarum species as robust sister to Physarum didermoides. Our trees also allow the following allocations: five Hyperamoeba strains to the genus Stemonitis; Hyperamoeba dachnaya, Pseudodidymium cryptomastigophorum, and three other Hyperamoeba strains to the genus Didymium; and two further Hyperamoeba strains to the family Physaridae. We therefore abandon the polyphyletic and redundant genus Hyperamoeba. We discuss the implications for the ecology and evolution of Myxogastria, whose amoeboflagellates are more widespread than previous inventories supposed, being now found in freshwater and even marine environments.
<o:p></o:p>
占冠（しむかっぷ）では、最低気温マイナス34℃を記録。厳しい寒さが続く北海道です。
ganz kalt（ガンツ カルト）! 鼻がもげそうに寒い。でも、爽やかだ。
ご紹介が遅れてしまいましたが、過日、１月のお誕生会がありました。大学院生のAさんとBさんが誕生月です（会費制、３００円）。おめでとうございます。
今回は、Cさんの手作りレモンパイ。
人数分の切り分け。
バースデープレゼント贈呈。もやしもんグッズで、O-157です。
お次ぎは？
ハイテク（？）オーデオグッズ。
さあ、また、微生物生態研究に励みましょ！
