Contents: Preface. Special Supplements: 1. Adaptation of photosynthesis to variable light conditions/A K Trivedi, S K. Shukla and G. Pandey. 2. Melatonin: Role in plant growth and development/Monika Sharma, Prasann Kumar and Ruchi Bansal. Section I: Molecular Physiology of Abiotic Stress in Plants. 1. Proteomics as a tool for assessment of metal toxicity in crop plants/Poonam Pandey and Rama Shanker Dubey. 2. Molecular, physiological and biochemical responses of plants to abiotic stress/Mukesh Kumar, Shweta Kaur, Shailesh Kumar R. Yadav and Smita Sundaram. 3. MicroRNAs and drought stress signaling/E Lokesh Goud, Shilpa Rani Dey, Prasann Kumar etc. 4. Physiological and molecular aspects of brassinosteroids under abiotic stress/Sreyashi Kashyap and A. Hemantaranjan. Section II: Strategies on Abiotic Stress Tolerance in Plants. 5. Impact of drought on plant growth and development/Poonam Kumari, P Kumar and P Dwivedi. 6. Plant heat shock proteins comeback to heat stress: An overview/A. Hemantaranjan, Deepmala Katiyar and A Nishant Bhanu. 7. Abiotic stress tolerance in legumes: agronomic management approaches/Swati Priya, Gaurav Kumar NK Prasanna Kumari, Prasann Kumar Narender Singh and Ruchi Bansal. 8. Various approaches for mitigation of abiotic stress for higher crop productivity/Dhiman Mukherjee. 9. Phyllochron: acclimatize to low temperature in cereals/Preeti Singh, Varsha Singh, Vijai P, A K Singh, Alok Kumar Singh and H. Hemantaranjan. 10. Plant growth promoting rhizobacteria (PGPR): a green strategy for agriculture sustainability in salinity stress/Rimjhim Sheel and Arti Kumari. Section III: Climate Change and Climate Shift. 11. Crop adaptation under climate change/Monika Sharma, Prasann Kumar, Ankita Singh, Vivek Kumar and Padmanabh Dwivedi The strengthening of Volume 19 of the Advances in Plant Physiology series has been entirely due to commendable contributions by scientists of eminence in unambiguous field. The endeavor of publishing the International Treatise Series on Plant Physiology has to really sort out the meagerness of significant researches, which are earnestly required for rising productivity, prosperity and sustainability of agriculture through notably emerging technologies for reformation in metabolic boundaries necessitates mainly for abiotic stress factors. The volume 19 has been broad subdivided into six pertinent sections including special supplements that precisely begins with considerable pieces of information on recent developments in adaptation of photosynthesis to variable light conditions; Melatonin: Role in plant growth and development; Proteomics as a tool for assessment of metal toxicity in crop plants, impact of engineered nano particles (ENPs) on plant development and growth, crop adaptation under climate change and so on. The special supplements section consist of 2 reviews dealing with how photosynthesis process changes with change in light condition and role of melatonin in plant growth and development which is a promising molecule for management of abiotic stress.