title: Chemotaxonomic study of Citrus, Poncirus and Fortunella genotypes based on peel oil volatile compounds--deciphering the genetic origin of Mangshanyegan (Citrus nobilis Lauriro).
abstract: Volatile profiles yielded from gas chromatography-mass spectrometry (GC-MS) analysis provide abundant information not only for metabolism-related research, but also for chemotaxonomy. To study the chemotaxonomy of Mangshanyegan, its volatile profiles of fruit and leaf and those of 29 other genotypes of Citrus, Poncirus, and Fortunella were subjected to phylogenetic analyses. Results showed that 145 identified (including 64 tentatively identified) and 15 unidentified volatile compounds were detected from their peel oils. The phylogenetic analysis of peel oils based on hierarchical cluster analysis (HCA) demonstrated a good agreement with the Swingle taxonomy system, in which the three genera of Citrus, Poncirus, and Fortunella were almost completely separated. As to Citrus, HCA indicated that Citrophorum, Cephalocitrus, and Sinocitrus fell into three subgroups, respectively. Also, it revealed that Mangshanyegan contain volatile compounds similar to those from pummelo, though it is genetically believed to be a mandarin. These results were further supported by the principal component analysis of the peel oils and the HCA results of volatile profiles of leaves in the study.
authors.affiliation: Key Laboratory of Horticultural Plant Biology (Ministry of Education), National Key Laboratory of Crop Genetic Improvement, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, People's Republic of China.
authors.forename: Cuihua
authors.initials: C
authors.lastname: Liu
authors.forename: Dong
authors.initials: D
authors.lastname: Jiang
authors.forename: Yunjiang
authors.initials: Y
authors.lastname: Cheng
authors.forename: Xiuxin
authors.initials: X
authors.lastname: Deng
authors.forename: Feng
authors.initials: F
authors.lastname: Chen
authors.forename: Liu
authors.initials: L
authors.lastname: Fang
authors.forename: Zhaocheng
authors.initials: Z
authors.lastname: Ma
authors.forename: Juan
authors.initials: J
authors.lastname: Xu
mesh_terms: D002957:Citrus / Q000737:chemistry* / Q000235:genetics*; D016000:Cluster Analysis; D005838:Genotype; D009822:Oils, Volatile / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D032104:Poncirus / Q000737:chemistry* / Q000235:genetics*; D025341:Principal Component Analysis; D027821:Rutaceae / Q000737:chemistry* / Q000378:metabolism*
chemical_list: D009822:Oils, Volatile