Multi-scale phenotyping of senescence-related changes in roots of Rapeseed in response to nitrate limitation

© The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology.

Bibliographische Detailangaben
Veröffentlicht in:Journal of experimental botany. - 1985. - (2024) vom: 09. Okt.
1. Verfasser: James, Maxence (VerfasserIn)
Weitere Verfasser: Masclaux-Daubresse, Céline, Balliau, Thierry, Marmagne, Anne, Chardon, Fabien, Trouverie, Jacques, Etienne, Philippe
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article Carbon iron lateral roots nitrogen proteases rapeseed root senescence taproot
Beschreibung
Zusammenfassung:© The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology.
Root senescence remains largely unexplored. In this study, the temporality of the morphological, metabolic, and proteomic changes occurring with root aging were investigated, providing a comprehensive picture of the root senescence program. We found novel senescence-related markers for the characterization of the developmental stage of root tissues. The rapeseed root system is unique in that it consists of the taproot and lateral roots. Our study confirms that the taproot, which transiently accumulates large quantities of starch and proteins, is specifically dedicated to nutrient storage and remobilization, while the lateral roots are mainly dedicated to nutrient uptake. Proteomic data from the taproot and lateral roots highlight the different senescence-related events that control nutrient remobilization and nutrient uptake capacities. Both the proteome and enzyme activities revealed senescence-induced proteases and nucleotide catabolic enzymes that deserve attention as they may play important roles in nutrient remobilization efficiency in rapeseed roots. Taking advantage of publicly available transcriptomic and proteomic data on senescent Arabidopsis leaves, we have highlighted new lists of senescence-related proteins specific or common to root organs and/or leaves
Beschreibung:Date Revised 09.10.2024
published: Print-Electronic
Citation Status Publisher
ISSN:1460-2431
DOI:10.1093/jxb/erae417