title: Biodegradation of an organoselenium compound to elemental selenium by Lentinula edodes (shiitake) mushroom.
abstract: The present paper reports for the first time the transformation of an organic selenium compound into red selenium (Se), which causes the intense red pigmentation of Lentinula edodes (shiitake mushroom) mycelia. The biotransformation of 1,5-diphenyl-3-selenopentanedione-1,5 (diacetophenonyl selenide, preparation DAPS-25) was studied in liquid- and solid-phase cultures of L. edodes. In liquid culture medium, a red color develops in the mycelium at initial DAPS-25 concentrations equal to or higher than 0.1 mmol/l. The intensity and initiation time of coloration is Se concentration-dependent. Semiquantitative data obtained by physicochemical methods on the extent of Se and acetophenone production suggest that L. edodes is able to absorb and/or destruct this organic Se xenobiotic.
authors.affiliation: Laboratory of Microbiology, Institute of Biochemistry and Physiology of Plants and Microorganisms, 13 Entuziastov Ave., Saratov 410049, Russia. tsivileva@ibppm.sgu.ru
authors.forename: Olga M
authors.initials: OM
authors.lastname: Tsivileva
authors.forename: Ekaterina A
authors.initials: EA
authors.lastname: Loshchinina
authors.forename: Alexei N
authors.initials: AN
authors.lastname: Pankratov
authors.forename: Marina M
authors.initials: MM
authors.lastname: Burashnikova
authors.forename: Nikolay A
authors.initials: NA
authors.lastname: Yurasov
authors.forename: Nina N
authors.initials: NN
authors.lastname: Bylinkina
authors.forename: Ivan A
authors.initials: IA
authors.lastname: Kazarinov
authors.forename: Valentina E
authors.initials: VE
authors.lastname: Nikitina
mesh_terms: D000098:Acetophenones / Q000378:metabolism; D001711:Biotransformation; D003116:Color; D003470:Culture Media / Q000378:metabolism; D008401:Gas Chromatography-Mass Spectrometry; D025282:Mycelium / Q000254:growth & development / Q000378:metabolism; D016566:Organoselenium Compounds / Q000378:metabolism*; D010858:Pigmentation; D064586:Selenic Acid; D012643:Selenium / Q000378:metabolism*; D018036:Selenium Compounds / Q000378:metabolism; D020942:Shiitake Mushrooms / Q000254:growth & development / Q000378:metabolism*; D013052:Spectrometry, X-Ray Emission; D015262:Xenobiotics / Q000378:metabolism
chemical_list: D000098:Acetophenones; D003470:Culture Media; D016566:Organoselenium Compounds; D018036:Selenium Compounds; D015262:Xenobiotics; D012643:Selenium; D064586:Selenic Acid; C038699:acetophenone