Temporal dependency of the transcriptional response to carbohydrate depletion contrasts with conservation of the rapid response to sucrose readdition

ABSTRACT: To investigate whether the transcriptional response to carbon (C) depletion and sucrose re-addition depend on the duration of C-depletion, Arabidopsis thaliana seedlings growing in liquid culture in weak continuous light were harvested 3, 6, 12, 24, 48 and 72 h after removing sucrose from the medium, and 30 min after resupplying sucrose at each of these times. After removing sucrose, soluble sugars fell strongly within 3 h, and starch was gradually depleted over 24 h, and hexose phosphates and ATP declined gradually over 72 h. Expression profiling using ATH arrays pointed to Overall the transcriptional response pointed to early transcriptional remodelling of metabolism to conserve C, followed by induction of photosynthesis and pathways that recycle C, and repression of growth-related proc

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Sarah Cookson 

PROVIDER: E-MTAB-3143 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress