Leptolyngbya CCM 4, a cyanobacterium with far-red photoacclimation from Cuatro Cienegas Basin, Mexico
Leptolyngbya CCM 4, a cyanobacterium with far-red photoacclimation from Cuatro Cienegas Basin, Mexico
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DOI：
10.1007/s11099-018-0774-z
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发表时间：
2018-03-01
期刊：
影响因子：
2.7
通讯作者：
Gutierrez-Cirlos, E. B.
中科院分区：
文献类型：
--
作者：
Gomez-Lojero, C.;Leyva-Castillo, L. E.;Gutierrez-Cirlos, E. B.
从墨西哥夸特罗西内加斯的波萨斯罗哈斯分离出一种含有藻胆蛋白且具有远红驯化能力的蓝细菌。经系统发育分析和形态特征描述，将其命名为细舌丝藻CCM 4。细鳞藻生长在远红光下。蔗糖梯度分析的色素显示两个不同的颜色带的藻胆蛋白。在60%蔗糖时的一条谱带是含有藻胆体的藻蓝蛋白;在35%蔗糖时，一种新型的藻胆蛋白在710 nm处吸收。SDS-PAGE显示存在两种类型的核-膜接头。从类囊体膜中提取的疏水色素的分析显示Chl a，d和f。叶绿素f/a的比值从远红光下的1：12-16可逆地变化到白色光下的不可检测浓度。Cuatro Cienegas是一个被沙漠包围的地方，是一个新的生态系统，在那里发现了一种在远红外线下生长的蓝藻。
A cyanobacterium containing phycobiliproteins with far-red acclimation was isolated from Pozas Rojas, Cuatro Cienegas, Mexico. It was named Leptolyngbya CCM 4 after phylogenetic analysis and a description of its morphological characteristics. Leptolyngbya was grown in far-red light. Sucrose-gradient analysis of the pigments revealed two different colored bands of phycobiliproteins. A band at 60% sucrose was a phycocyanin containing phycobilisome; at 35% sucrose, a new type of phycobiliprotein absorbed at 710 nm. SDS-PAGE revealed the presence of two types of core-membrane linkers. Analysis of the hydrophobic pigments extracted from the thylakoid membranes revealed Chl a, d, and f. The ratio of Chl f/a was reversibly changed from 1:12-16 under far-red light to an undetectable concentration of Chl f under white light. Cuatro Cienegas, a place surrounded by the desert, is a new ecosystem where a cyanobacterium, which grows in farred light, was discovered.