Editorial: Global Food and Nutrition Security Under Changing Climates

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Global Food and Nutrition Security Under Changing ClimatesGlobal climatic change poses a serious threat to crop production and food security.For instance, unpredictable weather events affecting the frequency of rains, floods, droughts, and extreme heat have already impacted global output and quality of staple crops and, thus, food and nutrition security (Ray et al., 2015).It has been estimated that climatic variability causes ∼1.6 and 5.0 million tons (MT) annual reduction in global rice and wheat yields, respectively (Ray et al., 2015;Arora, 2019).This translates into a considerable loss of consumable calories and nutrient and adds to the challenge of feeding the growing world population (∼10 billion in 2050).This editorial draws on articles published on this important Research Topic.The research findings highlight the significance of genotype and environmental interactions in determining how climate interacts with crop productivity.Crop plants show physiological modifications to respond to climatic stresses, although these modifications may impact yield and nutritional quality.However, innovative techniques that integrate genetic and management strategies for crop adaptation in the changing environments are essential to ensure global food security (Henry, 2020).Plant growth regulators (PGRs) offer an opportunity to induce stress tolerance and resilience of production system to changing climate.Indeed, PGRs have successfully been used in the cropping system to mitigate stress-induced changes in physiological functioning of crops (Najeeb et al., 2015; EL Sabagh et al.).Despite significant yield advancement achieved through improved management/breeding techniques, sustaining nutritional quality of the produce has been quite challenging, particularly for crop producers in developing countries.However, recent progress in the field of crop nutrition management through soil and plant agronomy could help to meet this challenge.For example, improved nutritional quality and wheat grain yield increases have been achieved through Zn fertilizer application, including in Pakistan (reviewed by Joy et al., 2017).Similarly, in an ex-ante analysis (10-yr data and associated parameters) of maize-based cropping systems, Manzeke-Kangara et al. (2021) reported that soil fertility management interventions with mineral NPK, organic nutrient inputs, and Zn fertilizers could increase dietary Zn supply in Zimbabwe and promote its cycling in cropping systems.Conservation of soil resources is an essential foundation for health because most terrestrial biodiversity is found within the soil, and 98.8% of the daily calories consumed by humans (2,849 kcal per capita) come from soil with only 1.2% (35 kcal per capita) from aquatic sources (FAO, 2018).While the role of soil nutrients in crop production has been well-recognized in agricultural

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