Progresses of Microbial Synthesis of Poly-γ-Glutamic Acid of Related Genes,Synthesis Mechanism and Fermentation Effects of Arbuscular Mycorrhizal Fungi on the Uptake of Different Nitrogen Sources in Elymus nutans Clone and Heterologous Expression of the Poly-γ-glutamic Acid Synthesis Gene pgsBCAE from Bacillus amyloliquefaciens C1 Studies on chemical constituents in leaf of Isatis indigotica Effects of γ-poly glutamic acid on substrate mineral nutrient supply and growth of tomato plug seedlings Protection of scutellarin on rat brain microvascular endothelial cells injury Effects of Glutamic Acid and TDZ (Thidiazuron) on the Fruit Coloration and Quality of Litchi chinensis Sonn. The Dominant Glutamic Acid Metabolic Flux to Produce γ-Amino Butyric Acid over Proline in Nicotiana tabacum Leaves under Water Stress Relates to its Significant Role in Antioxidant Activity Constituents of Gastrodia elata in Guizhou Protection of scutellarin on rat brain microvascular endothelial cells injury Quantitative Analysis of L-Pyroglutamic Acid of Tall Gastrodia (Gastrodia elata) by HPLC