Integrated transcriptomic and metabolomic analysis of provenances and organ-specific responses to drought and rehydration in Pinus tabuliformis
Shuwei Zhang, Xu Wang, Siyu Liu, Zhiyu Zhang, Yanan Yu, Tong Wu, Yongsheng Chen, Yuhan Chen, Xiangyu Meng, Wei Li, Wenhao Bo
TL;DR
This study explores how two provenances of Pinus tabuliformis respond to drought and rehydration at the molecular level, revealing organ-specific strategies and key genes involved in drought resistance.
Contribution
The study identifies organ-specific molecular strategies and candidate genes for drought resistance in two provenances of Pinus tabuliformis.
Findings
Roots and leaves showed distinct functional roles in drought response, with roots handling signal transduction and osmotic adjustment.
The HLH provenance used rapid-response plasticity, while the SL provenance adopted a dynamic defensive strategy.
Key genes and gene-metabolite networks related to proline, jasmonic acid, and flavonoid metabolism were identified.
Abstract
Drought stress severely limits the survival and growth of Pinus tabuliformis seedlings during afforestation. However, the molecular mechanisms coordinating organ-specific responses across diverse geographical provenances remain inadequately characterized. This study investigated the dynamic drought responses of two provenances of P. tabuliformis, originating from semi-arid (HLH) and semi-humid (SL) regions, through a time-course drought and rewatering experiment. Integrated transcriptomic and metabolomic analyses of roots and leaves revealed a clear functional specialization between these organs. Roots primarily initiated signal transduction and osmotic adjustment, whereas needles were predominantly engaged in minimizing water loss through transpiration. Notably, the HLH provenance demonstrated a rapid-response plasticity strategy, while the SL provenance exhibited a highly dynamic…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
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Taxonomy
TopicsPlant Gene Expression Analysis · Plant biochemistry and biosynthesis · Insect-Plant Interactions and Control