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Abstract Title:

Gibberella moniliformis AH13 with antitumor activity, an endophytic fungus strain producing triolein isolated from Adlay (Coix lacryma-jobi: poaceae).

Abstract Source:

Curr Microbiol. 2014 Sep ;69(3):381-7. Epub 2014 May 9. PMID: 24810291

Abstract Author(s):

Min Jia, Qian-Liang Ming, Qiao-Yan Zhang, Yu Chen, Nuo Cheng, Wen-wen Wu, Ting Han, Lu-Ping Qin

Article Affiliation:

Min Jia

Abstract:

In this study, the isolation of an endophytic fungus from the leaves of the medicinal herb adlay (Coix lacryma-jobi L. var. ma-yuen Stapf) is reported for the first time. The fungus produced Triolein (trioleoylglycerol), a major constituent of triacylglycerols (TAGs) of adlay, in rice medium under shake-flask and bench-scale fermentation conditions. The fungus was identified as Gibberella moniliformis (Fusarium verticillioides) by its morphology and authenticated by ITS analysis (ITS1 and ITS2 regions and the intervening 5.8S rDNA region). Triolein was identified by HPLC-ELSD coupled with APCI-MS and confirmed through comparison with authentic standard. The concentration of triolein produced by G. moniliformis AH13 reached 2.536± 0.006 mg/g dry weight of mycelium. Moreover, the EtOAc extract of G. moniliformis AH13 showed strong antitumor activity against four types of tumor cells (A549, HCT116, MDA-MB-231, and SW1990). These results suggest that G. moniliformis AH13 in adlay has significant scientific and industrial potential to meet the pharmaceutical demands and sustainable energy requirements for TAGs in a cost-effective, easily accessible, and reproducible way and is also a potential novel source of natural antitumor bioactive agents.

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