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DhQuePetr

ABSTRACT: Quercus petraea (sessile oak), genomic and transcriptomic data

PROVIDER: PRJEB74262 | ENA |

REPOSITORIES: ENA

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Dataset's files

Source:

			Action	DRS
	ERR12828822_1.fastq.gz	Fastqsanger.gz
	ERR12828822_2.fastq.gz	Fastqsanger.gz
	ERR12804369.fastq.gz	Fastqsanger.gz
	ERR12804370.fastq.gz	Fastqsanger.gz

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The impact of drought on phellem development: morpho-physiological adaptations and gene expression dynamics in cork oak stems

Project description:This work aimed to characterize the molecular adaptations occurring in cork oak (Quercus suber) stems in adaptation to drought, and identify key genetic pathways regulating phellem development. One-year-old cork oak plants were grown for additional 6 months under well-watered (WW) or water-deficit (WD) conditions and main stems were targeted for transcriptomic analysis. WD had a negative impact on secondary growth, decreasing the activity of the vascular cambium and phellogen. Following a tissue-specific approach, we analyzed the transcriptional changes imposed by WD in phellem (outer bark), inner bark, and xylem, and found a global downregulation of genes related to cell division, cell wall biogenesis, lignin and/or suberin biosynthesis. Phellem and phloem showed a concerted upregulation of photosynthesis-related genes, suggesting a determinant role of stem photosynthesis in the adaptation of young plants to long-term drought. The data gathered will be important to further harness the diverse genetic background of this species for the development of optimized management practices.

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