Over-expression of TaDWF4 increases wheat productivity under low and sufficient nitrogen through enhanced carbon assimilation

• DOI: 10.1038/s42003-022-03139-9
• Publication Date: 2022-03-03T11:02:42Z
• Authors: Matthew J. Milner; Stéphanie M. Swar...; Melanie Craze; Sarah Bowden; Howard Griffiths; Alison R. Bentley; Emma J. Wallington
• Keywords: Carbon assimilation; Limiting; Assimilation (phonology); Carbon fibers; Crop Productivity; Photosynthetic efficiency

There is a strong pressure to reduce nitrogen (N) fertilizer inputs while maintaining or increasing current cereal crop yields. We show that overexpression of TaDWF4-B, the dominant shoot expressed homoeologue OsDWF4, in wheat can increase plant productivity by up 105% under range N levels on marginal soils, resulting increased use efficiency (NUE). two four-fold TaDWF4 transcript enhances responsiveness genes regulated N. The increases seen were primarily due maintenance photosystem II operating and carbon assimilation plants when grown limiting conditions not an overall photosynthesis capacity. biomass production yield per OE lines could be linked modified partitioning changes expression pattern growth regulator Target Of Rapamycin, offering route towards breeding for sustained lower inputs.