title: Rhizobialide: a new stearolactone produced by Mesorhizobium sp. CCNWGX022, a rhizobial endophyte from Glycyrrhiza uralensis.
abstract: The endophytic strain Mesorhizobium sp. CCNWGX022 was isolated from licorice (Glycyrrhiza uralensis Fisch.) grown in the arid and semi-arid regions of Northwest China. The new stearic acid derived gamma-lactone 1, named rhizobialide (= (5S)-4,5-dihydro-5-(8-oxotetradecyl)furan-2(3H)-one), was isolated from the petroleum-ether extract of the fermentation broth of this strain. The structure of 1 was elucidated on the basis of spectroscopic and mass-spectrometric analysis. This is the first report of this type of compound from rhizobia.
authors.affiliation: Research Center of Microbiology, College of Life Science, Northwest A&F University, Yangling Shaanxi 712100, PR China. weigehong@yahoo.com.cn
authors.forename: Ge-Hong
authors.initials: GH
authors.lastname: Wei
authors.forename: Xue-Ying
authors.initials: XY
authors.lastname: Yang
authors.forename: Ji-Wen
authors.initials: JW
authors.lastname: Zhang
authors.forename: Jin-Ming
authors.initials: JM
authors.lastname: Gao
authors.forename: Yong-Qing
authors.initials: YQ
authors.lastname: Ma
authors.forename: Yun-Yun
authors.initials: YY
authors.lastname: Fu
authors.forename: Pang
authors.initials: P
authors.lastname: Wang
mesh_terms: D015107:4-Butyrolactone / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D002681:China; D029882:Glycyrrhiza uralensis / Q000382:microbiology*; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification; D012231:Rhizobium / Q000737:chemistry*; D013229:Stearic Acids / Q000737:chemistry / Q000302:isolation & purification; D013559:Symbiosis
chemical_list: C520747:4,5-dihydro-5-(8-oxotetradecyl)furan-2(3H)-one; D007783:Lactones; D013229:Stearic Acids; C031183:stearic acid; D015107:4-Butyrolactone