About this Research Topic
Recent reports suggest an exacerbating decline in cereal grain protein and ionome under elevated CO2; for example, studies have suggested a decrease in N metabolites in wheat. This reduction may be explained by the production of nitric oxide and the corresponding changes in nitrogen signaling, plus the decrease in the transcription and activity of nitrate reductases and high-affinity nitrate transporters. Similarly, the increase in night temperature threatens grain filling and grain nutrient content in rice and wheat. Unexpected flood events, prolonged drought, and high temperature adversely affect grain yield, grain ionome, and nutrient use efficiency.
This Research Topic aims to bring together research on alterations in plant nutrient use efficiency associated with climate change. A basic understanding of mechanisms associated with stress adaptation, focussing on nutrient use efficiency, will aid in developing climate-smart crops. Recent developments in nutrient signaling, targeted genome editing, and identification of stress-responsive donor genotypes (eg: CO2 responsiveness) are routes that are expected to help tackle the agricultural climate emergency.
We, therefore, welcome submissions of all types on the following themes:
• Nutrient (macro- and micro-) interactions under elevated CO2;
• Nutrient toxicity and climate change;
• Nutrient and sugar signaling;
• Climate change and grain ionome;
• Nutrient use efficiency under high temperatures;
• Nutrient use efficiency under drought, flood events, and submergence.
Keywords: nutrient use, climate change, nitrogen, crop nutrition, nutrient use efficiency, stress, ionome
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.