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Transcriptional responses of Arabidopsis thaliana immunity mutants to leaf microbiota strains

ABSTRACT: Plant responses to leaf bacteria

PROVIDER: PRJEB67453 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR12319301_1.fastq.gz	Fastqsanger.gz
	ERR12319301_2.fastq.gz	Fastqsanger.gz
	ERR12318714_1.fastq.gz	Fastqsanger.gz
	ERR12318714_2.fastq.gz	Fastqsanger.gz
	ERR12318317_1.fastq.gz	Fastqsanger.gz

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Project description: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.

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