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

ABSTRACT: 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

INSTRUMENT(S): DNBSEQ-G400

ORGANISM(S): Quercus suber

SUBMITTER: Pedro Barros 

PROVIDER: E-MTAB-13376 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress