environmental stresses affect plant growth and cause losses worth hundreds of million dollars of agricultural industry each year. many genes induced in response to environmental stresses. the dreb1a gene is a stress-inducible transcription factor that its overexpression increased tolerance to environmental stress in transgenic plants. dna was extracted from arabidopsis thaliana var. col.0 plant...

Besides the importance of pigmentation in species recognition, pigments protect body against different biotic and abiotic features. Melanin, dark coloration skin, hairs, feathers, is necessary for protecting from UV radiation. On other hand, lighter a surface is, more solar radiation reflected. Based on these arguments, it possible that pigment distribution would not be same among all regions u...