Differential gene expression related to an epigenetic memory affecting climatic adaptation in Norway spruce

Yakovlev, Igor; Asante, Daniel K.A.; Fossdal, Carl Gunnar; Junttila, Olavi; Johnsen, Øystein

doi:10.1016/j.plantsci.2010.07.004

Cited by 77 publications

(78 citation statements)

References 38 publications

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“…In conifers, the conditions prevailing during sexual reproduction and zygotic embryogenesis appear to adjust the adaptive performance of the progeny by the mechanism that may regulate cold acclimation (Yakovlev et al 2011). Therefore, the spring frost conditions in the present study were based on the climate data from Punkaharju during the spring or early summer.…”

Section: Spring Frost Experimentsmentioning

confidence: 99%

Coping with spring frost-effects on polyamine metabolism of Scots pine seedlings

Muilu‐Mäkelä¹,

Vuosku²,

Saarinen³

et al. 2017

iForest

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(1) Polyamines (PA) are ubiquitous polycations known to be involved in several phases of plant development as well as in tolerance to abiotic stresses. Phenols are complex secondary metabolites produced via the phenylpropanoid pathway that contain, e.g., cell wall compounds and antioxidants. Phenols are known to enhance chilling tolerance of plants. PA and phenolic pathways are connected via conjugation. In boreal coniferous forests spring frost has been considered to have severe effects on the survival of tree seedlings. Such effects are likely to increase in the future. The present study focuses on the role of PA and phenylpropanoid syntheses in the coping strategies of Scots pine exposed to cold temperatures during the vulnerable early seedling phase in late spring and early summer. We found that spring frost affects the expression of genes regulating PA metabolism and phenylpropanoid synthesis differently in above and below ground parts of the seedlings, whereas PA or phenol contents in tissues were not affected. The results suggest that Scots pine seedlings may not have time to develop metabolite level responses during a short period of freezing stress and, therefore, the originally different PA levels, especially in roots, may influence the tolerance of Scots pine seedlings to spring frost.

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Section: Spring Frost Experimentsmentioning

confidence: 99%

Coping with spring frost-effects on polyamine metabolism of Scots pine seedlings

Muilu‐Mäkelä¹,

Vuosku²,

Saarinen³

et al. 2017

iForest

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“…Trait plasticity can result in a wide range of phenotypes occurring in the same genetic background, acting as a buffer to environmental changes (Ghalambor et al 2007;Nicotra et al 2010). There is now increasing evidence that some heritable variation in ecologically relevant traits is not caused by genes but is instead stimulated by epigenetic mechanisms that alter gene activity through targeted molecular processes (Fieldes and Amyot 1999;Molinier et al 2006;Yakovlev et al 2011). In particular, DNA methylation and histone post-translational modifications are key mechanisms for gene-expression regulation and development in plants.…”

Section: Introductionmentioning

confidence: 99%

Constraints to and conservation implications for climate change adaptation in plants

2015

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Contemporary climate change is having widespread impacts on plant populations. Understanding how plants respond to this change is essential to our efforts to conserve them. The key climate responses of plant populations can be categorised into one of three types: migration, in situ adaptation, or extirpation. If populations are to avoid extirpation then migration and/or in situ adaptation is essential. In this review we first articulate the current and future constraints of plant populations, but trees in particular, to the different adaptation strategies (e.g. space availability, rate of change, habitat fragmentation, niche availability). Secondly, we assess the use of the most appropriate methods (e.g. natural environmental gradients, genome and transcriptome scans) for assessing and understanding adaptive responses and the capacity to adapt to future challenges. Thirdly, we discuss the best conservation approaches (e.g. assisted migration, biodiversity corridors, ex situ strategies) to help overcome adaptive constraints in plants. Our synthesis of plant, and particularly tree, responses and constraints to climate change adaptation, combined with the identification of conservation strategies designed to overcome constraints, will help deliver effective management actions to assist adaptation in the face of current and future climate change.

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“…The availability of such material would substantially increase knowledge and would be the first time that the biological role of different sRNA classes has been examined in a long-lived plant species. In light of the findings presented in Yakovlev et al (2010) regarding a link between epigenetic memory and climatic adaptation in offspring, this could well prove to yield significant advances in our understanding of long-term adaptive mechanisms in tree species.…”

Section: Future Perspectivesmentioning

confidence: 93%

Populus Short RNAs

Street

2011

RNA Technologies

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As a model species, Populus offers opportunities to study processes unique to woody, perennial species, such as seasonal senescence, dormancy and wood production. As a long-lived species, it is also possible that different adaptive survival strategies have been selected for in comparison to annual species. To date, a number of miRNAs have been shown to be differentially expressed or induced in response to abiotic stress and to be involved in processes such as wood development. Although Populus has not yet been extensively profiled for short RNAs, the available data has been used to identify a number of phased loci and to characterise association of short RNA and repetitive elements in the genome. There appears to be a hotspot of sRNA production on chromosome 19, which contains the proposed sex-determining locus.

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Differential gene expression related to an epigenetic memory affecting climatic adaptation in Norway spruce

Cited by 77 publications

References 38 publications

Coping with spring frost-effects on polyamine metabolism of Scots pine seedlings

Coping with spring frost-effects on polyamine metabolism of Scots pine seedlings

Constraints to and conservation implications for climate change adaptation in plants

Populus Short RNAs

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