Recording the Electrochemical Profile of Pueraria Leaves for Polyphyly Analysis

Abstract

Electrochemical profiles of Pueraria bouffordii, P. montana var. lobata, P. montana var. montana, P. montana var. thomsonii, Haymondia wallichii, Teyleria stricta and Toxicopueraria yunnanensis were recorded from leaf tissue after different solvent extractions. The voltammetric data recorded after different solvent extractions can be derived as patterns for species identification. The electrochemical behavior of plant tissue contains its electrochemical active compounds profile. As the distribution of chemical compounds in plants is controlled by genes, these profiles can reflect differences at the genetic level between species. The dendrogram deduced from the electrochemical profile has been used for polyphyly analysis. The result suggests the Teyleria stricta showed very distant relationships with other species. P. montana var. lobata, P. montana var. montana and P. montana var. thomsonii showed a close relationship because they were varietas. Interestingly, H. wallichii showed a close infrageneric relationship within these species, which disagrees with other morphological studies. In addition, the result also provides insight into phylogenetic status of the regionally Toxicopueraria yunnanensis.

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