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

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Title Over-expression of TaDWF4 increases wheat productivity under low and sufficient nitrogen through enhanced carbon assimilation
 
Creator Milner, Matthew J.
Swarbreck, Stéphanie M.
Craze, Melanie
Bowden, Sarah
Griffiths, Howard
Bentley, Alison R.
Wallington, Emma J.
 
Subject wheat
nitrogen
photosynthesis
productivity
biomass
 
Description 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 of OsDWF4, in wheat can increase plant productivity by up to 105% under a range of N levels on marginal soils, resulting in increased N use efficiency (NUE). We show that a two to four-fold increase in TaDWF4 transcript levels enhances the responsiveness of genes regulated by N. The productivity increases seen were primarily due to the maintenance of photosystem II operating efficiency and carbon assimilation in plants when grown under limiting N conditions and not an overall increase in photosynthesis capacity. The increased biomass production and yield per plant in TaDWF4 OE lines could be linked to modified carbon partitioning and changes in expression pattern of the growth regulator Target Of Rapamycin, offering a route towards breeding for sustained yield and lower N inputs.
 
Date 2022-03-03
2023-04-20T14:50:07Z
2023-04-20T14:50:07Z
 
Type Journal Article
 
Identifier Milner, M.J., Swarbreck, S.M., Craze, M., Bowden, S., Griffiths, H., Bentley, A.R. and Wallington, E.J. 2022. Over-expression of TaDWF4 increases wheat productivity under low and sufficient nitrogen through enhanced carbon assimilation. Communications Biology 5(1):193. https://hdl.handle.net/10883/22019
2399-3642
https://hdl.handle.net/10568/130065
https://hdl.handle.net/10883/22019
https://doi.org/10.1038/s42003-022-03139-9
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format application/pdf
 
Publisher Springer Science and Business Media LLC
 
Source Communications Biology