title: [Effects of nutrient deficiency on principal components of ginseng root exudates].
abstract: By the method of solution culture, the effects of N, P, and K deficiency on the principol components in root exudates of ginseng at its early growth stage were studied. The results showed that in treatments N and K deficiency and control, no significant difference was observed in the principal components of ginseng root exudates, and 28, 29, and 27 principal chromatographic peaks were detected by GC-MS, respectively; while in treatment P deficiency, only 22 principal chromatographic peaks were detected. Furthermore compounds in the root exudates from treatments N, P, and K deficiency and control were identified, respectively. Compared with control, treatments N and K deficiency had more kinds of organic acids and phenolic acids in root exudates, while treatment P deficiency was in adverse, which suggested that at early growth stages, ginseng had more requirement to N and K than P, and N and K deficiency would accelerate the exudation of organic acids and phenolic acids by roots.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China. liyong@implad.ac.cn
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.forename: Xiao-fang
authors.initials: XF
authors.lastname: Huang
authors.forename: Wan-long
authors.initials: WL
authors.lastname: Ding
mesh_terms: D062385:Hydroxybenzoates / Q000032:analysis; D009584:Nitrogen / Q000032:analysis*; D005894:Panax / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism; D010758:Phosphorus / Q000032:analysis; D010936:Plant Extracts / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry* / Q000378:metabolism; D011188:Potassium / Q000032:analysis*; D012987:Soil / Q000032:analysis*
chemical_list: D062385:Hydroxybenzoates; D010936:Plant Extracts; D012987:Soil; D010758:Phosphorus; C017616:phenolic acid; D009584:Nitrogen; D011188:Potassium