Dr. Parvaiz Ahmad is Senior Assistant Professor in the Department of Botany at Sri Pratap College, Srinagar, Jammu and Kashmir, India, and is presently a Visiting Scientist at King Saud University, Riyadh, Saudi Arabia. He completed his post-graduate degree in Botany in 2000 at Jamia Hamdard, New Delhi, India. After receiving a Doctorate degree from the Indian Institute of Technology (IIT), Delhi, India, he joined the International Centre for Genetic Engineering and Biotechnology, New Delhi, in 2007. His main research area is Stress Physiology and Molecular Biology. He has published more than 50 research papers in peer reviewed journals, and 40 book chapters. He is also an Editor of 17 volumes (one with Studium Press Pvt. India Ltd., New Delhi, India; nine with Springer, New York; three with Elsevier USA; and four with John Wiley & Sons, Ltd.). He is a recipient of the Junior Research Fellowship and Senior Research Fellowship award, granted by CSIR, New Delhi, India. Dr. Ahmad was awarded the Young Scientist Award under the Fast Track scheme in 2007 by the Department of Science and Technology (DST), Govt. of India. Dr. Ahmad is actively engaged in studying the molecular and physio-biochemical responses of different agricultural and horticultural plants under environmental stress. Dr. Mohammad Abass Ahanger is currently working as Assistant Professor at Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Yunnan, China. Dr. Ahanger completed his Postgraduate education in Botany from Jiwaji University, Gwalior, India in 2010 specializing in plant stress physiology and biochemistry. After receiving M Phil, Dr Ahanger completed his Ph D in 2016 from the same university. After working on allelopathic stress for another one year, Dr Ahanger was involved in teaching Plant Physiology and biochemistry to graduate student. Thereafter, he joined Northwest A&F University Yangling, China as post-doctoral fellow and worked on the phytohormone, mineral nutrient and nano material mediated abiotic stress tolerance in crop plants. Later Dr Ahanger joined Institute of Plant and Microbial Biology, Academia Sinica, Taiwan and worked on rice stress signalling. His main research interests are elucidation of tolerance mechanisms in plants for improved abiotic stress tolerance. He has published research in reputed national and international journals, and has edited books, and contributed book chapters to internationally published volumes. Dr. Singh obtained his PhD from the University of Allahabad on topic “Oxidative stress and antioxidant system in some cyanobacteria simultaneously exposed to UV-B and heavy metal.” He has authored 102 publications, as well as editorials in reputed journals. His area of research interest is the role of nitric oxide and hydrogen sulphide signalling in the regulation of abiotic stress in plants. Dr. Singh is also working as an editor and reviewer of several reputed international journals. Vijay Pratap Singh is an Assistant Professor, Department of Botany C.M.P. Post Graduate College, University of Allahabad, India. Dr. Singh has obtained his D.Phil. degree from University of Allahabad. He has authored 95 publications including book chapters and editorials in reputed journals. He has edited several books with Elsevier, Wiley, CRC Press, Nova Publisher, Studium Press, etc. His area of research interest is regulation of abiotic stress in plants with special emphasis on nitric oxide, hydrogen sulfide, reactive oxygen species and phytohormonal signaling. Dr. Singh is also working as an editor and reviewer of reputed international journals. Dr. Durgesh Kumar Tripathi is currently an Associate Professor at Amity Institute of Organic Agriculture, Amity University Uttar Pradesh, Noida, India. He is the recipient of ‘Dr DS Kothari Post-Doctoral Fellowship’ of the UGC, New Delhi. Dr. Tripathi has received his D.Phil. in Science from University of Allahabad, India. During this period, Dr. Tripathi worked extensively on phytolith analysis, crop stress physiology, agro-nanotechnology and molecular biology. He has expertise on laser spectroscopy. His research interests encompass stress tolerance mechanisms in plants. Presently, he is working with nano-materials and their interactions with plants to find out their detoxification mechanisms, he is also working on Silicon, Nitric oxide and hormonal crosstalk against abiotic stress in plants. Prince Sattam Bin Abdelaziz University, Alkharaj, Kingdom of Saudia Arabia Professor,Botany and Microbiology Department, King Saud University, Riyadh, Saudi Arabia