Cloning and differential expression analysis of S-adenosylmethionine decarboxylase gene FaSAMDC in tall fescue Polyamine Accumulation in Transgenic Tomato Enhances the Tolerance to High Temperature Stress Molecular Cloning and Expression Analysis of GhSAMDC at Low Temperature Stress in Cotton (Gossypium hirsutum L.) Cloning and Sequence Analysis of a S-Adenosylmethionine decarboxylase gene (SlSAMDC1) in tomato Cloning and Sequence Analysis of a S-Adenosylmethionine decarboxylase gene (SlSAMDC1) in tomato