TY  - JOUR
A1  - Balazadeh, Salma
A1  - Schildhauer, Joerg
A1  - Araujo, Wagner L.
A1  - Munne-Bosch, Sergi
A1  - Fernie, Alisdair R.
A1  - Proost, Sebastian
A1  - Humbeck, Klaus
A1  - Müller-Röber, Bernd
T1  - Reversal of senescence by N resupply to N-starved Arabidopsis thaliana: transcriptomic and metabolomic consequences
T2  - Journal of experimental botany
N2  - Leaf senescence is a developmentally controlled process, which is additionally modulated by a number of adverse environmental conditions. Nitrogen shortage is a well-known trigger of precocious senescence in many plant species including crops, generally limiting biomass and seed yield. However, leaf senescence induced by nitrogen starvation may be reversed when nitrogen is resupplied at the onset of senescence. Here, the transcriptomic, hormonal, and global metabolic rearrangements occurring during nitrogen resupply-induced reversal of senescence in Arabidopsis thaliana were analysed. The changes induced by senescence were essentially in keeping with those previously described; however, these could, by and large, be reversed. The data thus indicate that plants undergoing senescence retain the capacity to sense and respond to the availability of nitrogen nutrition. The combined data are discussed in the context of the reversibility of the senescence programme and the evolutionary benefit afforded thereby. Future prospects for understanding and manipulating this process in both Arabidopsis and crop plants are postulated.
KW  - Arabidopsis
KW  - gene expression
KW  - metabolomics
KW  - nitrogen limitation
KW  - senescence
KW  - transcriptome
Y1  - 2014
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/37734
SN  - 0022-0957
SN  - 1460-2431
VL  - 65
IS  - 14
SP  - 3975
EP  - 3992
PB  - Oxford Univ. Press
CY  - Oxford
ER  -