Chemical Constituents from the Fruits of Terminalia bellirica Roxb. Chemical Constituents Study on the Leaves of Mangifera indica L. Effect of Arbuscular Mycorrhizal Fungi on Growth and Two Phenolic Acids of Medicago sativa under Various Mixed Salt-alkaline Stresses Relationships between Lepidosaphes salicina Attack and Contents of Tannins and Phenolic Acids in Leaves of Different Syringa Species and Cultivars Leaves Secretion Dynamics of Phenolic Acids from Poplar (Populus×euramericana ‘Neva’) Seedling Roots under N,P Deficiency Conditions Study on the Phenolic Acid Allelochemicals Contents of the Aqueous Extracts of Ten Alfalfa Cultivars at the Blooming Stage Simultaneous determination of nine phenolic acids in Salvia miltiorrhiza by RRLC-UV DPPH radical scavenging activities of 31 flavonoids and phenolic acids and 10 extracts of Chinese materia medica