Figure 4.

(A) Nodes of the compounds related to the cyclopiazonic acid biosynthetic family. Nodes with bold outlined black circles are the overlap of molecules and the standard compounds, the nodes marked with asterisk are the molecules found from the structural relationship shown in molecular networks and the nodes with red outline represent the potentially novel compounds. (B) MS/MS spectrum of cyclopiazonic acid (CPA). A. minisclerotigenes is the cyclopiazonic acid-producer according to the previous study (Chang et al., 2009). A. alliaceus and A. arachidicola confirmed as two new CPA producing species by comparing the MS/MS spectra of both strains with known cyclopiazonic acid producer.