Progress in Structure Function and Antifungal Mechanism of Plant Defensins Research on Winter Injury and Prevent Technique of Alfalfa (Medicago sativa L.cv.‘Aohan’)in Chifeng Region Sequence Analysis of Lotus(Nelumbo nucifera Gaertn)Seed Defensin Gene and Plant Expression Vector Construction Transgenic tomato plants expressing glucanase and defensin genes and their resistance to Botrytis cinerea Cloning and Expression Analysis of Defensin Genes from Brassica napus Sequence Analysis of Lotus(Nelumbo nucifera Gaertn)Seed Defensin Gene and Plant Expression Vector Construction Genome-wide identification and comparative analysis of defensin genes from Chinese cabbage and Arabidopsis thaliana Human Defensin-1 (HNP-1) Expression in Tobacco: A Preliminary Observation on Anti-TMV Activity of the Transgenic Tobacco Plants Cloning and Expression Analysis of Plant Defensin-like Gene (ClPDF2.1) from Watermelon