When I started my studies on the content of ergosterol in green algae, after observing the effect of fluconazole on the algae in my aquarium (2013/2014), I found that some algae have more than one route of synthesis in their metabolism for the production of ergosterol. .. this has made me think that an underdosing of fluconazole may allow algae to activate an alternative pathway, and allow it to survive. With this in mind, and after making sure there would be no damage to the aquarium animals, I opted for the single dose treatment, in a dosage sufficient to block the preferred route of synthesis, "without there being time for the alga to using alternative ways ". The first dose I worked on was 150 mg / 30 liters and, finding some resistance in the alga
Derbésia sp., I increased the dosage to 9 mg / liter, with success.
Evolutionarily conserved Δ25(27)-olefin ergosterol biosynthesis pathway in the alga Chlamydomonas reinhardtii
There is a close relationship between ergosterol synthesis pathways and allelochemical diterpenoids that inhibit herbivory, so
Bryopsis sp. and
Derbésia sp., which are generally not attacked by herbivores, are then attacked by herbivores under the effect of fluconazole.
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