National Research Council of Italy

Institute of Biosciences and BioResources

DISBA logo CNR logo
IBBR publication #1774

Transcriptomic response of durum wheat to nitrogen starvation

Curci PL, Aiese Cigliano R, Zuluaga DL, Janni M, Sanseverino W, Sonnante G

Scientific Reports 7 (1): 1141. (2017)
doi: 10.1038/s41598-017-01377-0

Nitrogen (N) is a key macronutrient representing a limiting factor for plant growth and development and affects productivity in wheat. In this study, durum wheat response to N chronic starvation during grain filling was investigated through a transcriptomic approach in roots, leaves/stems, flag leaf and spikes of cv. Svevo. Nitrogen stress negatively influenced plant height, tillering, flag leaf area, spike and seed traits, and total N content. RNA-seq data revealed 4.626 differentially expressed genes (DEGs). Most transcriptomic changes were observed in roots, with 3.270 DEGs, while 963 were found in leaves/ stems, 470 in flag leaf, and 355 in spike tissues. A total of 799 gene ontology (GO) terms were identified, 180 and 619 among the upregulated and downregulated genes, respectively. Among the most addressed GO categories, N compound metabolism, carbon metabolism, and photosynthesis were mostly represented. Interesting DEGs, such as N transporters, genes involved in N assimilation, along with transcription factors, protein kinases and other genes related to stress were highlighted. These results provide valuable information about the transcriptomic response to chronic N stress in durum wheat, which could be useful for future improvement of N use efficiency

Actions
Select by Year
Select by Type
Select by Author
*
*
*
*
Istituto di Bioscienze e Biorisorse (IBBR/CNR)
Via G. Amendola 165/A, I-70126 Bari (Italy)
Copyright © 2012-2024. All Rights Reserved.