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''Rhizopus'' is a genus of common saprophytic fungi on plants and specialized parasites on animals. They are found on a wide variety of organic substrates, including "mature fruits and vegetables",〔 jellies, syrups, leather, bread, peanuts, and tobacco. Some ''Rhizopus'' species are opportunistic agents of human zygomycosis (fungal infection) and can be fatal. ''Rhizopus'' infections may also be a complication of diabetic ketoacidosis.〔 This widespread genus includes at least eight species.〔〔 ''Rhizopus'' species grow as filamentous, branching hyphae that generally lack cross-walls (i.e., they are coenocytic). They reproduce by forming asexual and sexual spores. In asexual reproduction, sporangiospores are produced inside a spherical structure, the sporangium. Sporangia are supported by a large apophysate columella atop a long stalk, the sporangiophore. Sporangiophores arise among distinctive, root-like rhizoids. In sexual reproduction, a dark zygospore is produced at the point where two compatible mycelia fuse. Upon germination, a zygospore produces colonies that are genetically different from either parent. *'' R. microsporus var. oligosporus'' is used to make tempeh, a fermented food derived from soybeans. *''R. oryzae'' is used in the production of alcoholic beverages in parts of Asia and Africa. *''Rhizopus stolonifer'' (black bread mold) causes fruit rot on strawberry, tomato, and sweet potato and used in commercial production of fumaric acid and cortisone. Various species, including ''R. stolonifer'', may cause soft rot in sweet potatoes and ''Narcissus''. ==Species== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Rhizopus」の詳細全文を読む スポンサード リンク
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