新种及新属——热河红杆菌，一种从稻田土壤中分离出的光合α-变形菌。
Rhodovastum atsumiense gen. nov., sp. nov., a phototrophic alphaproteobacterium isolated from paddy soil.
作者信息
Okamura Keiko, Hisada Takayoshi, Kanbe Toshio, Hiraishi Akira
机构信息
Department of Ecological Engineering, Toyohashi University of Technology, Japan.
出版信息
J Gen Appl Microbiol. 2009 Feb;55(1):43-50. doi: 10.2323/jgam.55.43.
A photoorganotrophic alphaproteobacterium designated strain G2-11(T) was isolated from submerged paddy soil. This bacterium had relatively large, oval to rod-shaped cells (2.0-3.0x3.0-10 microm). Cells were motile by means of single polar flagella. The color of phototrophically growing cultures was reddish-brown. The cell extract had absorption maxima at 375, 465, 492, 529, 592, 804, and 844 nm, indicating the presence of bacteriochlorophyll a and carotenoides of the spirilloxanthin series. Vesicular intracytoplasmic membranes were present. The main component of cellular fatty acids was C(18:1)omega7c. Ubiquinone-10 and rhodoquinone-10 were the major quinones. A 16S rRNA gene sequence analysis revealed that the isolate is closest to the acidophilic aerobic photosynthetic bacterium Acidisphaera rubrifaciens strain HS-AP3(T) (93.3% similarity). The G+C content of genomic DNA is 67.8 mol%. The name Rhodovastum atsumiense gen. nov., sp. nov. is proposed for the novel isolate. The type strain is strain G2-11(T) (=NBRC 104268(T)=KCTC 5708(T)).
从淹水稻田土壤中分离出一株光能有机营养型α-变形菌，命名为菌株G2-11(T)。该细菌具有相对较大的、椭圆形至杆状的细胞（2.0-3.0×3.0-10微米）。细胞通过单根极生鞭毛运动。光合生长培养物的颜色为红棕色。细胞提取物在375、465、492、529、592、804和844纳米处有吸收最大值，表明存在细菌叶绿素a和螺旋藻黄素系列的类胡萝卜素。存在泡状胞内膜。细胞脂肪酸的主要成分是C(18:1)ω7c。泛醌-10和玫红醌-10是主要的醌类。16S rRNA基因序列分析表明，该分离株与嗜酸性需氧光合细菌深红酸球藻菌株HS-AP3(T)最为接近（相似性为93.3%）。基因组DNA的G+C含量为67.8摩尔%。建议将该新分离株命名为深红红嗜菌属（Rhodovastum）新属，深红红嗜菌（Rhodovastum atsumiense）新种。模式菌株是菌株G2-11(T)（=NBRC 104268(T)=KCTC 5708(T)）。
Zotero 插件