Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A :
Streptococcus cerevisiae
Trichoderma polysporum
Clostridium butylicum
Aspergillus niger
According to the text, the bioactive molecule Cyclosporin A, which is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum . In contrast, Aspergillus niger produces citric acid and Clostridium butylicum produces butyric acid .
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