Stipanovic Robert D, Zhang Jiuxu, Bruton Benny D, Wheeler Michael H
South Central Agricultural Research Laboratory, ARS, USDA, Lane, Oklahoma 74555, USA.
J Agric Food Chem. 2004 Jun 30;52(13):4109-12. doi: 10.1021/jf030828f.
Monosporascus cannonballus causes severe production losses to muskmelon and watermelon in the United States and other countries. Wild types of the fungus produce no pigments when grown on potato dextrose agar (PDA). After long-term storage on soil/oat hull mix, however, some isolates of the fungus produce yellow to brown pigments and no perithecia when grown on PDA. Five colored metabolites from pigmented cultures of M. cannonballus isolate TX923038 have now been identified. Two of these, monosporascone and dehydroxyarthrinone, have been isolated from other fungi, and three, demethylcerdarin, monosporascol A and azamonosporascone, have not previously been reported. The (1)H NMR and (13)C NMR of all five compounds are reported.
炮弹孢单囊壳菌在美国和其他国家给甜瓜和西瓜造成了严重的产量损失。该真菌的野生型在马铃薯葡萄糖琼脂（PDA）上生长时不产生色素。然而，在土壤/燕麦壳混合物上长期保存后，该真菌的一些分离株在PDA上生长时会产生黄色至棕色色素且不产生子囊壳。现已鉴定出炮弹孢单囊壳菌分离株TX923038色素培养物中的五种有色代谢产物。其中两种，单孢菌素和脱氢节菱孢酮，已从其他真菌中分离出来，另外三种，去甲基cerdarin、单孢菌素A和氮杂单孢菌素，此前未见报道。报道了所有五种化合物的氢核磁共振（¹H NMR）和碳核磁共振（¹³C NMR）数据。
