Construction of plant expression vectors containing two anti-fungal and one anti-herbicide genes and their expression in transgenic tobacco Enhancement of Rice Disease Resistance by Two Antifungal Protein Genes THE STUDY ON AGROBACTERIUM RHIZOGENES MEDIATED CHITINASE AND β-1, 3-GLUCANASE TRANSFORMATION FOR TOBACCO Cloning and Sequence Analysis of Beta-1,3-glucanase Gene cDNA in Brassicacampestris ssp. chinensis