Brief introduction of Prochlorococcus:

Prochlorococcus is a very old marine organism. Although it is called "algae", it is very different from the algae in the general concept. Generally speaking, algae refers to multicellular eukaryotes, while Prochlorococcus is a unicellular prokaryote, so it is also classified as cyanobacteria. Their individual size is usually only about 0.7 micron, which is only 1% of the hair thickness.

There are two ecotypes of Prochlorococcus, one is adapted to strong light, and the other is adapted to weak light. The genome of Prochlorococcus glabratus is 1657990 base pairs and 17 16 genes, which is the smallest genome among known oxygen-producing photosynthetic organisms. The genomes of weak light-type Prochlorococcus are larger, but the similarity of 16S ribosomal RNA between them is 97%. According to the current bacterial classification method of human beings, they are still the same species.

Cultivation techniques:

Chlorococcus does not require high water quality, so it can be cultivated in fresh water with high hardness. The pH value of the water body is preferably controlled between 6.8 and 7.5, that is, slightly acidic to slightly alkaline. It grows slowly and requires less fertilizer. Although Chlorella is a lower plant, it does not have as developed roots as angiosperms, but can directly absorb nutrients from water through its body surface.

Therefore, in the rapid growth stage of plants in spring and autumn, a small amount of liquid fertilizer can be applied to water every 1-2 weeks. In the shade of the environment, the photosynthesis of plants is slow, which is not good for their growth; However, if the light is too strong, it is easy to entangle with other algae, which will affect its growth and greatly reduce its ornamental value.

The growth environment and reproduction of Prochlorococcus;

Prochlorococcus likes bright places without direct sunlight, likes warmth and heat avoidance, and grows well in the temperature range of 20-28℃, and the wintering temperature should not be lower than 4℃. Originated in Hokkaido, Japan and other places. It is only distributed in a few lakes such as Japan, Iceland and Estonia at high latitudes in the northern hemisphere.

The original green algae ball can't blossom and bear fruit, can't sow and can't propagate by cutting. They reproduce mainly through cell division. In a suitable growth environment, the original green algae ball will split and then grow slowly. Moreover, when the original green algae balls grow large enough, they will split because of the bearing factors inside, and more green algae balls will germinate. This is very common.