Table 1. Isolates of the Rhizopus oryzae complex used in this study.
| Collection # | Zygospores | Mating type | Origin and notes |
| R. oryzae s. s. | |||
| CBS112.073, 4, 5 | yes | minus 1, 2 | human pathogen |
| CBS127.083 | yes | minus 1, 2 | human pathogen |
| CBS148.22 | yes | minus 1, 2 | as R. tonkinensis, lactic acid |
| CBS257.285 | yes | minus 1, 2 | as R. formosaensis, fermented food |
| CBS266.30 | yes | minus 1, 2 | as R. fusiformis, on Brassica root |
| CBS346.363, 5 | yes | plus 1, 2 | non pathogenic |
| CBS382.52 | yes | minus 1, 2 | produces steroids |
| Duke166.02 | no | plus 2 | human pathogen |
| Duke99-133 | no | n. d. | human pathogen |
| Duke99-892 | no | plus 2 | human pathogen |
| NRRL395 | no | plus 2 | tempeh |
| NRRL1891 | no | plus 2 | Hildebrandt |
| NRRL1897 | yes | minus 1, 2 | grain |
| NRRL2908 | yes | plus 1, 2 | Chinese yeasts |
| NRRL3142 | no | minus 2 | Chinese yeasts |
| NRRL5833 | no | plus 2 | produces 6-azauridine |
| NRRL5834 | no | minus 2 | barley |
| NRRL6142 | no | minus 2 | parsnip, produces steroids |
| NRRL6311 | no | minus 2 | soft red wheat |
| NRRL10206 | no | plus 2 | human pathogen |
| NRRL21251 | no | plus 2 | human pathogen |
| NRRL21789 | yes | plus 2 | human pathogen |
| NRRL28631 | no | plus 2 | human pathogen |
| NRRLA-336 | yes | minus 1, 2 | wine cake |
| NRRLA-10884 | no | minus 1 | human pathogen |
| NRRLA-13142 | no | minus 2 | human pathogen |
| NRRLA-13440 | yes | minus 1, 2 | human pathogen |
| R. delemar | |||
| CBS329.47 | yes | minus 1, 2 | tempeh, produces pectinase |
| NRRL1528 | no | minus 2 | |
| NRRL1548 | yes | minus 1, 2 | |
| NRRL1549 | no | plus 2 | |
| NRRL15513 | no | minus 2 | |
| NRRL1552 | no | minus 2 | |
| NRRL2005 | no | plus 2 | produces fumaric acid |
| NRRL3562 | no | plus 2 | tempeh |
| NRRL3563 | no | plus 2 | tempeh |
| NRRL13098 | no | minus 2 | tapioca (tapai-ubi) |
| NRRL21447 | no | minus 2 | human pathogen |
| NRRLA-16456 | no | minus 2 | human pathogen |
| RA99-8803 | no | plus 2 | human pathogen |
1
determined in mating assays.
2
determined by sequencing the sex locus.
3
Strains for which the sex locus and flanking genes have been sequenced.
4
Type culture.
5
Tester strains used in mating assays.
n. d. – not determined.