A novel aerobic moderately thermophilic bacterium, designated strain 2918^T, was isolated from a terrestrial hot spring of Kamchatka, Russian Federation. Gram-negative, motile, spherical cells were present singly, in pairs, or aggregates, and reproduced by budding. The strain grew at 25–60 °C and within a pH range of 5.0–8.0 with an optimum at 54–60 °C and pH 7.5. Strain 2918^T did not require sodium chloride or yeast extract for growth. It was a chemoorganoheterotroph, growing on mono-, di- and polysaccharides (starch, lichenan, galactan, arabinan, xanthan gum, beta-glucan). No growth was observed under anaerobic conditions neither in the presence of sulfur, nitrate, or thiosulfate nor without adding any electron acceptor. Major cellular fatty acids were C_18:0 and C_20:0. The respiratory quinone was MK-6. The size of the genome of strain 2918^T was 4.81 Mb. Genomic DNA G + C content was 60.4 mol%. According to the 16S rRNA gene sequence and conserved protein sequences phylogenies, strain 2918^T represented a distinct lineage of the order Gemmatales within Planctomycetes. Based on phylogenetic analysis and phenotypic features, the novel isolate was assigned to a novel genus in the Gemmatales for which the name Thermogemmata gen. nov. is proposed. Strain 2918^T (=KCTC 72012^T =VKM B-3161^T) represents its first species Thermogemmata fonticola sp. nov.

一种新颖的好氧中度嗜热菌，指定应变2918 ^Ť，由堪察加，俄罗斯联邦的陆地温泉中分离。革兰氏阴性，能动的球形细胞单独，成对或聚集存在，并通过出芽繁殖。菌株在25–60°C和5.0–8.0的pH范围内生长，最佳温度为54–60°C和pH 7.5。菌株2918 ^T不需要氯化钠或酵母提取物即可生长。它是一种化学有机异养菌，生长于单，双和多糖（淀粉，地衣聚糖，半乳聚糖，阿拉伯聚糖，黄原胶，β-葡聚糖）上。在硫，硝酸盐或硫代硫酸盐的存在下，或在不添加任何电子受体的情况下，在厌氧条件下均未观察到生长。细胞内主要脂肪酸为C _18：0和C _20：0。呼吸醌为MK-6。菌株2918 ^T的基因组大小为4.81 Mb。基因组DNA G + C含量为60.4mol％。根据16S rRNA基因序列和保守的蛋白质序列的系统发育，应变2918 ^Ť表示的顺序的不同谱系Gemmatales内浮霉菌门。基于系统发生分析和表型特征，该新颖分离物分配到一个新的属的Gemmatales的量，名称Thermogemmata根。十一月 被提议。菌株2918 ^T（= KCTC 72012 ^T = VKM B-3161 ^T）代表其第一个物种Thermogemmata fonticola sp。十一月