The present book updates the subject content on Bacterial Genetics, Cloning Vectors in Molecular Biology, molecular tool to detect plant pathogen, Molecular Stress Response in Context with Abiotic and Biotic Factor, Plant Cells, Biochemistry of Methane Oxidation, Isolation of Secondary Metabolites, Silage, Polyamine and plant stress response, Photosynthesis, Transpiration, and Plant Hormones, Senescence and Abscission in Crops. Thanks are due to publisher and contributors from various institutions and universities. The book will be helpful for the researchers, academia working in the field of Genetics, Cloning Vectors, molecular tool to detect plant pathogen, Molecular Stress Response, Plant Cells, Biochemistry of Methane Oxidation, Secondary Metabolites, Polyamine and plant stress response, Photosynthesis, Transpiration, and Plant Hormones. Contents:– Bacterial Genetics and its Role in Research Innovation; Cloning Vectors in Molecular Biology; Advance Molecular tool to Detect Plant Pathogen; Molecular Stress Response in Context with Abiotic and Biotic Factor; The Plant Cells; Biochemistry of Methane Oxidation and Technologies for Mitigation; Isolation of Secondary Metabolites; Silage and Hay; Polyamine and Plant Stress Response; Photosynthesis; Transpiration; Plant Hormones, Senescence and Abscission in Crops