期刊
MOLECULAR PLANT
卷 5, 期 2, 页码 376-386出版社
CELL PRESS
DOI: 10.1093/mp/ssr093
关键词
Astragalus membranaceus; metabolic fingerprinting; amplified fragment length polymorphisms; gas chromatography time-of-flight mass spectrometry
资金
- National Key Technology R&D Program in the 11th Five Years Plan of China [2006BA108B05-03]
- National Basic Research Program of China [2007CB108800]
Integration of the genetic and metabolic fingerprinting can provide a new approach to differentiate similar Traditional Chinese Medical (TCM) materials. Two leguminous plants, Mojia Huangqi and Menggu Huangqi, are important medical herbs and share great similarities in morphology, chemical constituent, and genomic DNA sequence. The taxonomy of Mojia Huangqi and Menggu Huangqi has been debated for more than 50 years and discrimination of TCM materials directly affects the pharmacological and clinical effects. AFLP based genetic fingerprinting and GC-TOF/MS-based metabolic fingerprinting were used to successfully discriminate the two species. The results of AFLP supported the opinion that Menggu Huangqi was a variant of Mojia Huangqi. The metabolic fingerprinting showed growth locations have greater impacts on the metabolite composition and quantity than the genotypes (cultivated versus wild) in Menggu Huangqi. The difference of some soluble sugars, fatty acids, proline, and polyamine reflected plant adaptation to different growth environments. Using multivariate and univariate statistical analysis, three AFLP markers and eight metabolites were identified as candidate DNA and metabolic markers to distinguish the two herb materials. The correlation network between AFLP markers and metabolites revealed a complex correlation network, which indicated the special metabolic pathways and the regulation networks of Huangqi.
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