Transformation method of stramenopile

Present invention provides a stramenopile transformation methods improve the ability to produce the useful substance. Solution: relates stramenopile conversion processes to a native Phycomycetes introducing a foreign gene, stramenopile is Labyrinthulomycetes, more particularly belonging to the Labyrinthula sp., Alternaria Rhizopus Altornia genus, the genus Aplanochytrium, genus, Schizochytrium, Aurantiochytrium species, the microorganism pot genus, species, etc. I Ken's pot of broken capsule. Foreign gene is an antibiotic resistance, ([Delta] 5 desaturase gene, delta12 desaturase gene, and / or ω3 desaturase gene) chromogenic protein, and / or fatty acid desaturase associated, by electroporation or gene gun foreign gene. FERM BP-11298 20100924