Transcriptomics

Dataset Information

0

Developmental stage specificity of transcriptional, biochemical and CO2 efflux responses of leaf dark respiration to growth of Arabidopsis thaliana at elevated [CO2]


ABSTRACT: Plant respiration responses to elevated growth [CO2] are key uncertainties in predicting future crop and ecosystem function. In particular, the effects of elevated growth [CO2] on respiration over leaf development are poorly understood. This study tested the prediction that, due to greater whole-plant photoassimilate availability and growth, elevated [CO2] induces transcriptional reprogramming and a stimulation of nighttime respiration in leaf primordia, expanding leaves, and mature leaves of Arabidopsis thaliana. In primordia, elevated [CO2] altered transcript abundance, but not for genes encoding respiratory proteins. In expanding leaves, elevated [CO2] induced greater glucose content and transcript abundance for some respiratory genes, but did not alter respiratory CO2 efflux. In mature leaves, elevated [CO2] led to greater glucose, sucrose and starch content, plus greater transcript abundance for many components of the respiratory pathway, and greater respiratory CO2 efflux. Therefore, growth at elevated [CO2] stimulated dark respiration only after leaves transitioned from carbon sinks into carbon sources. This coincided with greater photoassimilate production by mature leaves under elevated [CO2] and peak respiratory transcriptional responses. It remains to be determined if biochemical and transcriptional responses to elevated [CO2] in primordial and expanding leaves are essential prerequisites for subsequent alterations of respiratory metabolism in mature leaves.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE56480 | GEO | 2014/04/04

SECONDARY ACCESSION(S): PRJNA243410

REPOSITORIES: GEO

Dataset's files

Source:
Action DRS
Other
Items per page:
1 - 1 of 1

Similar Datasets

2014-04-04 | E-GEOD-56480 | biostudies-arrayexpress
2013-10-15 | E-GEOD-50966 | biostudies-arrayexpress
2006-08-23 | GSE5573 | GEO
| PRJNA495352 | ENA
2007-01-08 | GSE5636 | GEO
2007-01-08 | GSE5638 | GEO
2007-01-08 | GSE5637 | GEO
2015-05-01 | GSE64501 | GEO
2013-10-15 | GSE50966 | GEO
2007-01-08 | GSE5639 | GEO