| 翻訳と辞書 |
| Sphaerotilus natans ： ウィキペディア英語版 |
Sphaerotilus natans
''Sphaerotilus natans'' is an aquatic periphyton organism associated with polluted water. It forms colonies commonly known as "sewage fungus", but later identified as tightly sheathed filamentous bacteria.〔Fair, Geyer & Okun p.32-31〕
==Morphology==
Straight or smoothly curved filaments 1.5 µm in diameter and 100 to more than 500 µm in length are formed by rod-shaped cells with clear septa growing within a long, tubular sheath. An adhesive basal element at one end of the filament can aid attachment to solid surfaces. The sheath offers some protection from predators, and the ability to anchor in flowing water allows access to a passing stream of food and nutrients. Individual mature cells swarm out of the protective tube to colonize new sites.〔Hammer p.55〕 Each motile mature cell has an intertwined bundle of flagella appearing as a single flagellum consisting of a long filament with a short hook and a basal body complex, but it is distinguishable by electron microscope as ten to thirty strands with diameters of 12.5 to 16 nm each. ''Sphaerotilus natans'' stores reserves of poly- ''beta'' -hydroxybutyrate (PBH) as internal globules making up thirty to forty percent of the dry weight of a colony.〔 Gram and Neisser staining reactions are negative.〔(【引用サイトリンク】title=Sphaerotilus natans )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Sphaerotilus natans」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|