A strain of the filamentous non N-fixing cyanobacterium Phormidium sp. isolated from the Messolonghi (W. Greece) saltworks, was cultured in the laboratory at six different combinations of salinity (20-40-60 ppt) and illumination (low-2000 lux and high-8000 lux). At salinities of 60 and 40 ppt and in high illumination (XL-8000 lux), the growth rate (μmax) presented the highest values (0.491 and 0.401, respectively) compared to the corresponding at 20 ppt (0.203). In general and at all salinities, the higher illumination (XL) gave the highest growth rates and shorter duplication time (tg) in comparison to the lower illumination (L). On the contrary, phycocyanin, phycoerythrin and allophycocyanin production was extremely increased in the lower illumination (L) in all salinities, from ~14 fold at 40 and 60 ppt to 269 fold at 20 ppt of those corresponding to higher illumination (XL). Similar analogies were also recorded for the other two billiproteins. Chlorophyll-a content was also higher in lower illumination at all salinities in contrast to total carotenoids that did not exhibit such a pattern. The high growth rate and high phycocyanin content along with the rapid sedimentation of its cultured biomass can set this marine Phormidium species as a promising candidate for mass culture.

中文翻译：

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蓝细菌 Phormidium sp. 的培养生长。在各种盐度和光照条件下及其对藻蓝蛋白和其他色素含量的影响

一株丝状非固氮蓝细菌Phormidiumsp. 从 Messolonghi (W. Greek) 盐场中分离出来的 1 株，在实验室中以六种不同的盐度（20-40-60 ppt）和光照（低 2000 勒克斯和高 8000 勒克斯）组合培养。在 60 和 40 ppt 的盐度和高照度 (XL-8000 lux) 下，与 20 ppt (0.203) 的相应值相比，增长率 (μmax) 呈现最高值（分别为 0.491 和 0.401）。一般来说，在所有盐度下，与较低光照 (L) 相比，较高光照 (XL) 的生长速率最高，复制时间 (tg) 更短。相反，藻蓝蛋白、藻红蛋白和别藻蓝蛋白的产量在所有盐度的较低光照 (L) 下都显着增加，从 40 和 60 ppt 的约 14 倍增加到 20 ppt 对应于较高光照 (XL) 的 269 倍。其他两种胆蛋白也记录了类似的类比。与没有表现出这种模式的总类胡萝卜素相比，在所有盐度的较低光照下，叶绿素 a 含量也较高。高增长率和高藻蓝蛋白含量以及其培养生物量的快速沉降可以使这种海洋Phormidium物种作为大规模培养的有希望的候选者。