Comparative assessment of metabolic responses to cold acclimation and deacclimation in annual bluegrass and creeping bentgrass

Hoffman, L. Richard; DaCosta, Michelle; Bertrand, Annick; Castonguay, Yves; Ebdon, J. S.

doi:10.1016/j.envexpbot.2013.12.018

Cited by 32 publications

(34 citation statements)

References 58 publications

(102 reference statements)

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“…All three dehydrins investigated in blueberry 29 and two investigated each in canola and wheat 36 showed a strong reduction in their abundance during deacclimation. However, in two grass species only one of the two detected dehydrins showed this behavior, while the other was clearly induced during deacclimation 38 . In addition, the content of cold induced ice recrystallization inhibition proteins in the Antarctic hair grass ( Deschampsia antarctica ) decreased strongly during deacclimation, in parallel with the corresponding transcript levels 39 .…”

Section: Discussionmentioning

confidence: 90%

Time-dependent deacclimation after cold acclimation in Arabidopsis thaliana accessions

Zuther

Juszczak

Lee

et al. 2015

Sci Rep

113

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During low temperature exposure, Arabidopsis thaliana and many other plants from temperate climates increase in freezing tolerance in a process termed cold acclimation. However, the correct timing and rate of deacclimation, resulting in loss of freezing tolerance and initiation of growth is equally important for plant fitness and survival. While the molecular basis of cold acclimation has been investigated in detail, much less information is available about deacclimation. We have characterized the responses of 10 natural accessions of Arabidopsis thaliana that vary widely in their freezing tolerance, to deacclimation conditions. Sugar, proline and transcript levels declined sharply over three days in all accessions after transfer of cold acclimated plants to ambient temperatures, while freezing tolerance only declined in tolerant accessions. Correlations between freezing tolerance and the expression levels of COR genes and the content of glucose, fructose and sucrose, as well as many correlations among transcript and solute levels, that were highly significant in cold acclimated plants, were lost during deacclimation. Other correlations persisted, indicating that after three days of deacclimation, plant metabolism had not completely reverted back to the non-acclimated state. These data provide the basis for further molecular and genetic studies to unravel the regulation of deacclimation.

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Section: Discussionmentioning

confidence: 90%

Time-dependent deacclimation after cold acclimation in Arabidopsis thaliana accessions

Zuther

Juszczak

Lee

et al. 2015

Sci Rep

113

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“…The samples were ground into a fine powder using liquid nitrogen and sifted through a 50‐µm sieve and stored at 4°C until further use. Soluble carbohydrates were extracted and analyzed as described by Hoffman et al ().…”

Section: Methodsmentioning

confidence: 99%

Cold acclimation induces distinctive changes in the chromatin state and transcript levels of COR genes in Cannabis sativa varieties with contrasting cold acclimation capacities

Mayer

Ali-Benali

Demone

et al. 2015

Physiologia Plantarum

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Little is known about the capacity of Cannabis sativa to cold-acclimate and develop freezing tolerance. This study investigates the cold acclimation (CA) capacity of nine C. sativa varieties and the underlying genetic and epigenetic responses. The varieties were divided into three groups based on their contrasting CA capacities by comparing the survival of non-acclimated and cold-acclimated plants in whole-plant freeze tests. In response to the CA treatment, all varieties accumulated soluble sugars but only the varieties with superior capacity for CA could maintain higher levels throughout the treatment. In addition, the varieties that acclimated most efficiently accumulated higher transcript levels of cold-regulated (COR) genes and genes involved in de novo DNA methylation while displaying locus- and variety-specific changes in the levels of H3K9ac, H3K27me3 and methylcytosine (MeC) during CA. Furthermore, these hardy C. sativa varieties displayed significant increases in MeC levels at COR gene loci when deacclimated, suggesting a role for locus-specific DNA methylation in deacclimation. This study uncovers the molecular mechanisms underlying CA in C. sativa and reveals higher levels of complexity regarding how genetic, epigenetic and environmental factors intertwine.

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“…This suggests that the grass under well-watered and mild drought stress may have better osmotic adjustment relative to that under severe drought stress. Previous studies also showed that TSS and proline increased in perennial ryegrass (Hoffman et al, 2014) during 21 d of cold acclimation, and zoysiagrass (Zoysia sp.) during 28 d of cold acclimation (Patton et al, 2007).…”

Section: Discussionmentioning

confidence: 75%

“…Plant has developed various antioxidant metabolites and enzymes to cope with toxic ROS and protect cells. The antioxidant defense systems are closely associated with stress tolerance (Hoffman et al, 2014;Huang et al, 2014). Merewitz et al (2011) noted that the suppression of drought-induced leaf senescence and root dieback in the transgenic creeping bentgrass plants was associated with the maintenance of greater antioxidant enzyme activities.…”

Section: Discussionmentioning

confidence: 99%

“…Plant may undergo osmotic adjustment in response to drought and cold stress (Hoffman et al, 2014;Huang et al, 2014). Accumulation of various osmoprotectants or compatible solutes, such as soluble proteins, simple sugars, and amino acids, in the cell during drought stress and cold acclimation improve plant tolerance to stresses (Ball et al, 2002;Blokhina et al, 2003;Hoffman et al, 2014;Shi et al, 2012).…”

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confidence: 99%

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Water Deficit Irrigation Impacts on Antioxidant Metabolism Associated with Freezing Tolerance in Creeping Bentgrass

Zhang

Zhong

et al. 2015

J. Amer. Soc. Hort. Sci.

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Soil water deficit impacts cold acclimation and freezing tolerance in creeping bentgrass (Agrostis stolonifera L.), but the mechanisms underlying have not been well understood. The objectives of this study were to investigate the effects of deficit irrigation before and during cold acclimation on osmoprotectants, antioxidant metabolism, and freezing tolerance in creeping bentgrass. The grass was subjected to three-soil moisture levels: well-watered [100% container capacity (CC)], deficit irrigation induced-mild drought stress (60% CC), and severe drought stress (30% CC) for 35 days including 14 days at 24/20 °C (day/night) and then 21 days under cold acclimation treatment (2 °C) in growth chambers. Leaf proline and total soluble sugar (TSS) levels were higher in the grass under mild drought stress relative to that under severe drought stress. Superoxide (O2−·), hydrogen peroxide (H2O2), and malondialdehyde (MDA) content were higher in the grass under severe drought relative to that under well-watered and mild drought stress at day 35. Mild drought stress increased catalase (CAT) and guaiacol peroxidase (POD) activity, induced new isoforms and increased band intensities of superoxide dismutase (SOD), CAT, and POD during cold acclimation (days 14 to 35). No differences in osmoprotectants, antioxidant metabolism, and freezing tolerance were found between mild drought and well-watered treatments. The results of this study suggest deficit irrigation-induced mild drought stress in late fall and winter could induce accumulation of osmoprotectants and improve antioxidant metabolism, and freezing tolerance, but severe drought stress could reduce freezing tolerance of creeping bentgrass in the region with limited precipitation.

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Comparative assessment of metabolic responses to cold acclimation and deacclimation in annual bluegrass and creeping bentgrass

Cited by 32 publications

References 58 publications

Time-dependent deacclimation after cold acclimation in Arabidopsis thaliana accessions

Time-dependent deacclimation after cold acclimation in Arabidopsis thaliana accessions

Cold acclimation induces distinctive changes in the chromatin state and transcript levels of COR genes in Cannabis sativa varieties with contrasting cold acclimation capacities

Water Deficit Irrigation Impacts on Antioxidant Metabolism Associated with Freezing Tolerance in Creeping Bentgrass

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