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Sulfur is part of the amino acids cystein and methionin, plants take up sulfur in the form of $H_2S$. These organisms will also need a way to get rid of excess sulfur, how? In what compounds?
Judging by the smell of some farts, I guess $H_2SO_4$ plays a role, but I can't imagine that one get'S rid of all the sulfur this way.

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Plants do not take up H$_2$S, this is limited to a few microorganisms. Plants take up soluble forms of sulphur as sulphates, and the surely do not build up sulfuric acid (which would destroy the cells). Have you looked at this topic: biology.stackexchange.com/questions/15642/… –  Chris Mar 24 at 10:42
    
Maybe you want to comment on this answer: biology.stackexchange.com/a/15609/3037 'He states it's H2S –  mart Mar 26 at 13:47
    
I did, thank you. –  Chris Mar 26 at 16:47
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