Drought Stress Adaptation in Norway Spruce and Related Genomics Work

Klápště, Jaroslav; Lecoy, Jonathan; García-Gil, María del Rosario

doi:10.1007/978-3-030-21001-4_9

Cited by 4 publications

(1 citation statement)

References 87 publications

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“…However, attributing variation in functional traits to genetic differences within wild populations is rare, even if genetic differences within species across aridity gradients are common (Honorio Coronado et al ., 2014). Techniques are being developed that could link more cost‐effectively genetic and functional changes to identify the genetic component of drought stress adaptation (Klápště et al ., 2020). Yet, without separating out plastic and genetic causes of trait variation, attributing intraspecific variation across a gradient to adaptive plasticity is likely to lead to overestimating the capacity of plants to respond to drought on the timescales associated with climate change.…”

Section: Defining and Measuring Plant Adjustment To Droughtmentioning

confidence: 99%

How woody plants adjust above‐ and below‐ground traits in response to sustained drought

et al. 2023

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Summary Future increases in drought severity and frequency are predicted to have substantial impacts on plant function and survival. However, there is considerable uncertainty concerning what drought adjustment is and whether plants can adjust to sustained drought. This review focuses on woody plants and synthesises the evidence for drought adjustment in a selection of key above‐ground and below‐ground plant traits. We assess whether evaluating the drought adjustment of single traits, or selections of traits that operate on the same plant functional axis (e.g. photosynthetic traits) is sufficient, or whether a multi‐trait approach, integrating across multiple axes, is required. We conclude that studies on drought adjustments in woody plants might overestimate the capacity for adjustment to drier environments if spatial studies along gradients are used, without complementary experimental approaches. We provide evidence that drought adjustment is common in above‐ground and below‐ground traits; however, whether this is adaptive and sufficient to respond to future droughts remains uncertain for most species. To address this uncertainty, we must move towards studying trait integration within and across multiple axes of plant function (e.g. above‐ground and below‐ground) to gain a holistic view of drought adjustments at the whole‐plant scale and how these influence plant survival.

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Section: Defining and Measuring Plant Adjustment To Droughtmentioning

confidence: 99%

How woody plants adjust above‐ and below‐ground traits in response to sustained drought

et al. 2023

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Inter-annual variability of catchment water balance in a montane spruce forest

Skalova

Dohnal

Votrubová

et al. 2022

Hydrological Sciences Journal

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Candidate regulators and target genes of drought stress in needles and roots of Norway spruce

et al. 2021

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Drought stress impacts seedling establishment, survival and whole-plant productivity. Molecular responses to drought stress have been most extensively studied in herbaceous species, mostly considering only aboveground tissues. Coniferous tree species dominate boreal forests, which are predicted to be exposed to more frequent and acute drought as a result of ongoing climate change. The associated impact at all stages of the forest tree life cycle is expected to have large-scale ecological and economic impacts. However, the molecular response to drought has not been comprehensively profiled for coniferous species. We assayed the physiological and transcriptional response of Picea abies (L.) H. Karst seedling needles and roots after exposure to mild and severe drought. Shoots and needles showed extensive reversible plasticity for physiological measures indicative of drought response mechanisms, including changes in stomatal conductance (gs), shoot water potential and ABA (abscisic acid). In both tissues the most commonly observed expression profiles in response to drought were highly correlated with ABA levels. Still, root and needle transcriptional responses contrasted, with extensive root-specific downregulation of growth. Comparison between previously characterized A. thaliana drought-response genes and P. abies revealed both conservation and divergence of transcriptional response to drought. In P. abies, transcription factors belonging to the bZIP AREB/ABF (ABA Response Element Binding/ABRE Binding Factors) ABA-dependent pathway had a more limited role. These results highlight the importance of profiling both above- and below-ground tissues and provide a comprehensive framework to advance understanding of the drought response of P. abies. The results demonstrate that short term, severe drought induces severe physiological responses coupled to extensive transcriptome modulation and highlight the susceptibility of Norway spruce seedlings to such drought events.

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Drought Stress Adaptation in Norway Spruce and Related Genomics Work

Cited by 4 publications

References 87 publications

How woody plants adjust above‐ and below‐ground traits in response to sustained drought

How woody plants adjust above‐ and below‐ground traits in response to sustained drought

Inter-annual variability of catchment water balance in a montane spruce forest

Candidate regulators and target genes of drought stress in needles and roots of Norway spruce

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