Relation between morphology and native climate in the resistance of different Pinus pinaster populations to pitch canker disease caused by Fusarium circinatum

Díaz, Raquel; Poveda, Jorge; Torres-Sánchez, Esteban; Sánchez-Gómez, Tamara; Martín-García, Jorge; Diez, Julio J.

doi:10.1016/j.foreco.2024.121909

Forest Ecology and Management

2024

DOI: 10.1016/j.foreco.2024.121909

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Relation between morphology and native climate in the resistance of different Pinus pinaster populations to pitch canker disease caused by Fusarium circinatum

Raquel Díaz,

Jorge Poveda,

Esteban Torres-Sánchez

et al.

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Comparative Stem Transcriptome Analysis Reveals Pathways Associated with Drought Tolerance in Maritime Pine Grafts

Manjarrez,

de María,

Vélez

et al. 2024

IJMS

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The maritime pine (Pinus pinaster Ait.) is a highly valuable Mediterranean conifer. However, recurrent drought events threaten its propagation and conservation. P. pinaster populations exhibit remarkable differences in drought tolerance. To explore these differences, we analyzed stem transcriptional profiles of grafts combining genotypes with contrasting drought responses under well-watered and water-stress regimes. Our analysis underscored that P. pinaster drought tolerance is mainly associated with constitutively expressed genes, which vary based on genotype provenance. However, we identified key genes encoding proteins involved in water stress response, abscisic acid signaling, and growth control including a PHD chromatin regulator, a histone deubiquitinase, the ABI5-binding protein 3, and transcription factors from Myb-related, DOF NAC and LHY families. Additionally, we identified that drought-tolerant rootstock could enhance the drought tolerance of sensitive scions by regulating the accumulation of transcripts involved in carbon mobilization, osmolyte biosynthesis, flavonoid and terpenoid metabolism, and reactive oxygen species scavenging. These included genes encoding galactinol synthase, CBL-interacting serine/threonine protein kinase 5, BEL1-like homeodomain protein, dihydroflavonol 4-reductase, and 1-deoxy-D-xylulose-5-phosphate. Our results revealed several hub genes that could help us to understand the molecular and physiological response to drought of conifers. Based on all the above, grafting with selected drought-tolerant rootstocks is a promising method for propagating elite recalcitrant conifer species, such as P. pinaster.

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Comparative Stem Transcriptome Analysis Reveals Pathways Associated with Drought Tolerance in Maritime Pine Grafts

Manjarrez,

de María,

Vélez

et al. 2024

IJMS

View full text Add to dashboard Cite

show abstract

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Relation between morphology and native climate in the resistance of different Pinus pinaster populations to pitch canker disease caused by Fusarium circinatum

Cited by 1 publication

References 29 publications

Comparative Stem Transcriptome Analysis Reveals Pathways Associated with Drought Tolerance in Maritime Pine Grafts

Comparative Stem Transcriptome Analysis Reveals Pathways Associated with Drought Tolerance in Maritime Pine Grafts

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