Drought and salinity are the major environmental abiotic stresses that negatively impact crop development and yield. To improve yields under abiotic stress conditions, drought- and salinity-tolerant crops are key to support world crop production and mitigate the demand of the growing world population. Nevertheless, plant responses to abiotic stresses are highly complex and controlled by networks of genetic and ecological factors that are the main targets of crop breeding programs. Several genomics strategies are employed to improve crop productivity under abiotic stress conditions, but traditional techniques are not sufficient to prevent stress-related losses in productivity. Within the last decade, modern genomics studies have advanced our capabilities of improving crop genetics, especially those traits relevant to abiotic stress management. This review provided updated and comprehensive knowledge concerning all possible combinations of advanced genomics tools and the gene regulatory network of reactive oxygen species homeostasis for the appropriate planning of future breeding programs, which will assist sustainable crop production under salinity and drought conditions.

Bangladesh Agricultural Research Institute Gazipur 1701 Bangladesh

Department of Agronomy Bangladesh Wheat and Maize Research Institute Dinajpur 5200 Bangladesh

Department of Agronomy Centurion University of Technology and Management Village Alluri Nagar R Sitapur 761211 Odisha India

Department of Botany and Plant Physiology Faculty of Agrobiology Food and Natural Resources Czech University of Life Sciences Prague Kamycka 129 165 00 Prague Czech Republic

Department of Plant Physiology Slovak University of Agriculture Nitra Tr A Hlinku 2 949 01 Nitra Slovakia

Institute of Cotton Research Chinese Academy of Agricultural Sciences Anyang 455000 China

Institute of Tea Research Chinese Academy of Agricultural Sciences South Meiling Road Hangzhou 310008 China

State Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University 61 Daizong St Tai'an 271000 China

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