title: Metabolic differentiation of diamondback moth ( Plutella xylostella (L.)) resistance in cabbage ( Brassica oleracea L. ssp. capitata).
abstract: The diamondback moth, Plutella xylostella (L.), is a major pest responsible for destroying cabbage and other Brassica vegetable crops. A diamondback moth-resistant cabbage line was studied by comparing its metabolite profiles with those of a susceptible cabbage. Fourier transform infrared spectroscopy analysis revealed that carbohydrates, aromatic compounds, and amides were the major factors that distinguished the resistant and susceptible genotypes. Gas chromatography-time-of-flight mass spectrometry profiled 46 metabolites, including 19 amino acids, 15 organic acids, 8 sugars, 3 sugar alcohols, and 1 amine in two genotypes and F1 hybrid cabbages. The levels of glycolic acid, quinic acid, inositol, fumaric acid, glyceric acid, trehalose, shikimic acid, and aspartic acid were found to be very significantly different between the resistant and susceptible genotypes with a P value of <0.0001. These results will provide a foundation for further studies on diamondback moth resistance in cabbage breeding and for the development of other herbivore-resistant crops.
authors.affiliation: Division of Life Sciences, Incheon National University , Incheon 406-772, Korea.
authors.forename: Jae Kwang
authors.initials: JK
authors.lastname: Kim
authors.forename: Su Ryun
authors.initials: SR
authors.lastname: Choi
authors.forename: Jeongyeo
authors.initials: J
authors.lastname: Lee
authors.forename: Soo-Yun
authors.initials: SY
authors.lastname: Park
authors.forename: Seung Yeub
authors.initials: SY
authors.lastname: Song
authors.forename: Jonghyun
authors.initials: J
authors.lastname: Na
authors.forename: Suk Weon
authors.initials: SW
authors.lastname: Kim
authors.forename: Sun-Ju
authors.initials: SJ
authors.lastname: Kim
authors.forename: Ill-Sup
authors.initials: IS
authors.lastname: Nou
authors.forename: Yong Han
authors.initials: YH
authors.lastname: Lee
authors.forename: Sang Un
authors.initials: SU
authors.lastname: Park
authors.forename: Hyeran
authors.initials: H
authors.lastname: Kim
mesh_terms: D000818:Animals; D001937:Brassica / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism* / Q000469:parasitology; D055432:Metabolomics; D009036:Moths / Q000502:physiology*; D010935:Plant Diseases / Q000469:parasitology*