What is the mineral salt that is source of sulfur for plants, seaweed and the synthesis of aminoacids? @MIT OCW Biology

Question

What is the mineral salt that is source of sulfur for plants, seaweed and the synthesis of aminoacids?    @MIT OCW Biology

anonymous · Answer

well. mineralic Fertilizer brings phosphate in form of CaNaPO4 or CaHPO4 or (NH4)2HPO4 into the soil. organic fertilizer has many phosphate-sources, that would be too complex. once you got that phosphor into the plants, it will be put into ATP for amino acid synthesis.

anonymous · Answer

hello there

trancenova · Answer

Hmmm well I know that sulfur supply in polluted areas is supplied to plants via atmospheric SO2. Though in those places where the plants can't get sulfur, sulfur supply is from super-phosphate fertilisers. This is because super phosphate is formed by the addition of sulfuric acid to phosphate rock and forms CaSO4. The primary uptake from soils is the sulfate ion $$SO _{4}^{2-}$$ Further reading here: http://onlinelibrary.wiley.com/doi/10.1002/jpln.200900037/abstract?systemMessage=Wiley+Online+Library+will+be+disrupted+5+Nov+from+10-12+GMT+for+monthly+maintenance (if you can access the paper) or http://www.sciencedirect.com/science/article/pii/B0123485304002435

liliakarina · Answer

Thank you, Schleifspur and TranceNova!

trancenova · Answer

Not a problem, I was happy to see a question that is actually in my field of study :D