Isolation, Expression and Single Nucleotide Polymorphisms Analysis of Dehydration Responsive Element Binding Gene (LpDREB) in Lespedeza potaninii Isolation, Expression and Single Nucleotide Polymorphisms Analysis of Heat Shock Transcription Factor HsfA1d in Populus Molecular Cloning and Expression Analysis of C4 Phosphoenolpyruvate Carboxylase Gene from A. hypochondriacus L.