The question of origins arise as to anti-melanoma taxol:
Colletotrichum / Taxol
Systematic Analysis of the Anticancer Agent Taxol-Producing Capacity in Colletotrichum Species and Use of the Species for Taxol Production. - PubMed - NCBI
'....As C. dematium is stored in liquid nitrogen, under mineral oil, or in a deep freezer at KACC, we requested to test samples from each storage condition to compare the effects of storage method on taxol production. Although all of the C. dematium samples could produce taxol, the one stored under mineral oil produced more than 10 times the amount of taxol than those stored under other conditions....To date, at least two Colletotrichum species have been shown to produce taxol; namely, C. gloeosporoides isolated from the leaves of Justicia gendarussa, Plumeria acutifolia and Tectona grandis, and C. capsici isolated from diseased chili pepper fruits.
....
We identified 6 additional TS-bearing (taxadiene synthase), Colletotrichum species with the potential to produce taxol....We are suspicious of the TS gene origin, because the 100% homology among TS genes from the Taxus species and Colletotrichum species indicates that the gene from the Taxus species originated from the taxol-producing endophytic fungi rather than from plants.'
Colletotrichum / Taxol
Systematic Analysis of the Anticancer Agent Taxol-Producing Capacity in Colletotrichum Species and Use of the Species for Taxol Production. - PubMed - NCBI
'....As C. dematium is stored in liquid nitrogen, under mineral oil, or in a deep freezer at KACC, we requested to test samples from each storage condition to compare the effects of storage method on taxol production. Although all of the C. dematium samples could produce taxol, the one stored under mineral oil produced more than 10 times the amount of taxol than those stored under other conditions....To date, at least two Colletotrichum species have been shown to produce taxol; namely, C. gloeosporoides isolated from the leaves of Justicia gendarussa, Plumeria acutifolia and Tectona grandis, and C. capsici isolated from diseased chili pepper fruits.
....
We identified 6 additional TS-bearing (taxadiene synthase), Colletotrichum species with the potential to produce taxol....We are suspicious of the TS gene origin, because the 100% homology among TS genes from the Taxus species and Colletotrichum species indicates that the gene from the Taxus species originated from the taxol-producing endophytic fungi rather than from plants.'