…They are found in seawater, marine mud, fresh water, sludge, and other places with a high content of sulfur compounds, and oxidize substrates such as hydrogen sulfide (sulfide), solid sulfur, sulfite, thiosulfate, and polythionates. Beggiatoa and Thiothrix , which have long been widely known as sulfur bacteria, are made up of rod-shaped cells that gather together to form filaments, and in the presence of hydrogen sulfide, they oxidize it and accumulate sulfur in their bodies. They are often found in ditches. … From Beggiatoa…It is relatively large for a bacterium, and because it forms filaments and moves in a gliding manner, it is said to be closer in phylogeny to the blue-green algae Oscillatoria than to bacteria. It is closely related to the sulfur bacteria Achromatium , Thiobacillus , and Thiothrix , and is classified as the Beggiatoales. [Tsubaki Keisuke] … *Some of the terminology that mentions "Thiothrix" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…海水,海泥,淡水,汚泥そのほか硫黄化合物の多いところにみられ,硫化水素(硫化物),固体硫黄,亜硫酸塩,チオ硫酸塩,ポリチオン酸塩などを基質として酸化している。古くから硫黄細菌として広く知られているベギアトアおよびチオスリクスThiothrixは桿(かん)状細胞が集まって糸状体を形成しているもので,硫化水素存在下ではこれを酸化し,硫黄を体内に蓄積している。水溝によくみられる。… 【ベギアトア】より…細菌としては形が比較的大きく,糸状体となったり,また,すべるように運動するところから,細菌よりラン藻類のオシラトリアOscillatoriaに系統的に近いともいわれる。近縁のものに硫黄細菌であるアクロマティウムAchromatium,ティオバシルスThiobacillus,ティオスリクスThiothrixがあり,ベギアトア目Beggiatoalesとしてまとめられている。【椿 啓介】。… ※「Thiothrix」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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