BACKGROUND: The variation of growth and cold tolerance of two natural @entity958 accessions, Cvi (cold sensitive) and Rschew (cold tolerant), was analysed on a proteomic, phosphoproteomic and metabolomic level to derive characteristic information about genotypically distinct strategies of metabolic reprogramming and growth maintenance during cold acclimation. RESULTS: Growth regulation before and after a cold acclimation period was monitored by recording fresh weight of leaf rosettes. Significant differences in the shoot fresh weight of Cvi and Rschew were detected both before and after acclimation to low temperature. During cold acclimation, starch levels were found to accumulate to a significantly higher level in Cvi compared to Rschew. Concomitantly, statistical analysis revealed a cold-induced decrease of @entity68931 (BAM3; AT4G17090) in Cvi but not in Rschew. Further, only in Rschew we observed an increase of the protein level of the debranching enzyme @entity68932 ( @entity68932 ; AT4G09020). Additionally, the cold response of both accessions was observed to severely affect ribosomal complexes, but only Rschew showed a pronounced accumulation of @entity505 and @entity1568 compounds. The abundance of the Cold Regulated (COR) protein @entity48904 (AT5G52310) as well as its phosphorylation was observed to be positively correlated with the acclimation state of both accessions. In addition, transcription factors being involved in growth and developmental regulation were found to characteristically separate the cold sensitive from the cold tolerant accession. Predicted protein-protein interaction networks (PPIN) of significantly changed proteins during cold acclimation allowed for a differentiation between both accessions. The PPIN revealed the central role of @entity505 / @entity1568 allocation and ribosomal complex formation to establish a new cold-induced metabolic homeostasis as also observed on the level of the metabolome and proteome. CONCLUSION: Our results provide evidence for a comprehensive multi-functional molecular interaction network orchestrating growth regulation and cold acclimation in two natural accessions of @entity958 . The differential abundance of @entity68933 indicates a central role of transitory starch degradation in the coordination of growth regulation and the development of stress tolerance. Finally, our study indicates naturally occurring differential patterns of C/N balance and protein synthesis during cold acclimation.

Integrative molecular profiling indicates a central role of transitory starch breakdown in establishing a stable C/N homeostasis during cold acclimation in two natural accessions of XXXX .

@entity1568 :: ('MESH:D009584', 'Chemical') :: ['nitrogen'] @entity958 :: ('3702', 'Species') :: ['Arabidopsis thaliana', 'Arabidopsis'] @entity68932 :: ('826481(Tax:3702)', 'Gene') :: ['isoamylase 3', 'ISA3'] @entity68933 :: ('827419;826481', 'Gene') :: ['beta-amylase 3 and isoamylase 3'] @entity48904 :: ('835307(Tax:3702)', 'Gene') :: ['COR78'] @entity505 :: ('MESH:D002244', 'Chemical') :: ['carbon'] @entity68931 :: ('827419(Tax:3702)', 'Gene') :: ['beta-amylase 3']
@entity958 :: (3702,Species) :: ['Arabidopsis thaliana']
