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A geographic cline in leaf salicylic acid with increasing elevation in Arabidopsis thaliana.

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Salicylic acid (SA) occupies a key role as a hormone central to both plant resistance to bacterial pathogens and tolerance of abiotic stresses. Plants at high elevation experience colder temperatures and elevated UV levels. While it has been predicted that SA concentrations will be higher in plants

Endopolyploidy is associated with leaf functional traits and climate variation in Arabidopsis thaliana

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Premise: Endopolyploidy is widespread throughout the tree of life and is especially prevalent in herbaceous angiosperms. Its prevalence in this clade suggests that endopolyploidy may be adaptive, but its functional roles are poorly

Emergence timing and fitness consequences of variation in seed oil composition in Arabidopsis thaliana.

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Early seedling emergence can increase plant fitness under competition. Seed oil composition (the types and relative amounts of fatty acids in the oils) may play an important role in determining emergence timing and early growth rate in oilseeds. Saturated fatty acids provide more energy per carbon

Isolation and characterization of cold responsive NAC gene from Lepidium latifolium.

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Cold stress is one of the major limiting factor in crop productivity. Plants growing in colder regions acclimatize to severe conditions owing to the presence of 'cold stress tolerant genes'. Isolation and functional characterization of these genes are important before their exploitation in modern

Natural variation in the C-repeat binding factor cold response pathway correlates with local adaptation of Arabidopsis ecotypes.

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The natural range of Arabidopsis thaliana (Arabidopsis) encompasses geographical regions that have greatly differing local climates, including harshness of winter temperatures. A question thus raised is whether differences in freezing tolerance might contribute to local adaptation in Arabidopsis.

Cold tolerance in Arabidopsis kamchatica.

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• OBJECTIVE Cold tolerance is a critically important factor determining how plants will be influenced by climate change, including changes in snowcover and extreme weather events. Although a great deal is known about cold tolerance in Arabidopsis thaliana, it is not highly cold tolerant. This study

Demographic and genetic patterns of variation among populations of Arabidopsis thaliana from contrasting native environments.

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BACKGROUND Understanding the relationship between environment and genetics requires the integration of knowledge on the demographic behavior of natural populations. However, the demographic performance and genetic composition of Arabidopsis thaliana populations in the species' native environments

DNA methylation in Arabidopsis has a genetic basis and shows evidence of local adaptation.

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Epigenome modulation potentially provides a mechanism for organisms to adapt, within and between generations. However, neither the extent to which this occurs, nor the mechanisms involved are known. Here we investigate DNA methylation variation in Swedish Arabidopsis thaliana accessions grown at two

Use of infrared thermal imaging to isolate Arabidopsis mutants defective in stomatal regulation.

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In response to drought, plants synthesise the hormone abscisic acid (ABA), which triggers closure of the stomatal pores. This process is vital for plants to conserve water by reducing transpirational water loss. Moreover, recent studies have demonstrated the advantages of the Arabidopsis stomatal

A new role for phytochromes in temperature-dependent germination.

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Germination timing is a fundamental life-history trait, as seedling establishment predicates realized fitness in the wild. Light and temperature are two important cues by which seeds sense the proper season of germination. Using Arabidopsis thaliana, we provide evidence that phytochrome-mediated

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