2012
DOI: 10.1002/ece3.387
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Acclimation and interaction between drought and elevated UV‐B in A. thaliana: Differences in response over treatment, recovery and reproduction

Abstract: Here, a factorial experiment was used to investigate the interactive effects of a UV-B episode and concurrent progressive drought on the growth, chemistry, and reproductive success of A. thaliana. Both drought and UV-B negatively affected rosette growth, although UV-B had the greater effect. Acclimation to UV-B involved adjustment of leaf morphology, while drought induced accumulation of soluble sugars and phenolics. All plants recovered from treatments, but the cost of recovery was a developmental delay resul… Show more

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Cited by 21 publications
(25 citation statements)
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References 67 publications
(153 reference statements)
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“…Absorption of UV-B through UVR8 induces instant monomerization of the protein and its nuclear translocation to initiate expression of genes concerned with UV protection, such as HY5 and CHS, with concomitant flavonoid production (Favory et al, 2009;Rizzini et al, 2011;O'Hara and Jenkins, 2013). Drought has also been associated with anthocyanin accumulation in various tissues, and flavonoid concentration was found significantly higher in combined stress-treated plants than in those treated with UV-B alone (Hughes et al, 2010;Comont et al, 2012). Under low levels of UV-B, the UVR8-overexpressing plants accumulated more flavonoids than control plants and the osmotic stress, simultaneously with the UV-B exposure, could further enhance the levels of UVR8 protein.…”
Section: Uvr8 and Plant Long-term Response To Osmotic Stress Under Lomentioning
confidence: 99%
“…Absorption of UV-B through UVR8 induces instant monomerization of the protein and its nuclear translocation to initiate expression of genes concerned with UV protection, such as HY5 and CHS, with concomitant flavonoid production (Favory et al, 2009;Rizzini et al, 2011;O'Hara and Jenkins, 2013). Drought has also been associated with anthocyanin accumulation in various tissues, and flavonoid concentration was found significantly higher in combined stress-treated plants than in those treated with UV-B alone (Hughes et al, 2010;Comont et al, 2012). Under low levels of UV-B, the UVR8-overexpressing plants accumulated more flavonoids than control plants and the osmotic stress, simultaneously with the UV-B exposure, could further enhance the levels of UVR8 protein.…”
Section: Uvr8 and Plant Long-term Response To Osmotic Stress Under Lomentioning
confidence: 99%
“…Knowledge on the effects of UV-B on plant growth and chemistry (nutritional characteristics relevant to insects) has been developed due to past concerns about ozone depletion (Ballaré et al, 1996;Hunt and McNeil, 1999;Mackerness, 2000;Jansen, 2002;Comont et al, 2012;Mewis et al, 2012). In contrast, understanding of the effects of the UV-A fraction of the solar spectrum on plants and insect pests is very limited.…”
Section: Introductionmentioning
confidence: 99%
“…Secondary metabolites were extracted in 70% methanol (Comont et al., ) and analyzed with a high‐pressure liquid chromatography (HPLC) system (Waters, Elstree, UK). The mobile phase consisted of 5% acetic acid (solvent A) and 100% methanol (solvent B) with a linear gradient from 5 to 75%, B in A, over 35 min.…”
Section: Methodsmentioning
confidence: 99%
“…Samples were analyzed with a HPLC system (Jasco, Essex, UK). Sugars were identified by comparison with an internal library of standards (Comont et al., ). Total proteins were extracted in McIlvaine buffer pH 7 containing 50 mM ascorbic acid and 0.2 ml of 20% lithium dodecyl sulfate and then analyzed by the Lowry assay (Lowry et al., ).…”
Section: Methodsmentioning
confidence: 99%