Interplay between low-temperature pathways and light reduction

Lindlöf, Angelica

doi:10.4161/psb.5.7.11701

Cited by 10 publications

(9 citation statements)

References 96 publications

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“…We must also consider that, in a natural environment, a decreased R:FR ratio occurs at sunset and, during this twilight period, the light intensity is gradually decreasing. Consequently, it seems to be evident that not only the spectrum but also the changing light intensity can be an important, external signal affecting gene regulation [21,24,47,48]. In tomatoes, monochromatic red and far-red light was tested for inducing cold tolerance.…”

Section: The Expression Of Hvcbf14 and Its Target Genes Hvcor14b And mentioning

confidence: 99%

Temperature and Light-Quality-Dependent Regulation of Freezing Tolerance in Barley

Ahres

Gierczik

Boldizsár

et al. 2020

Plants

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It is established that, besides the cold, incident light also has a crucial role in the cold acclimation process. To elucidate the interaction between these two external hardening factors, barley plantlets were grown under different light conditions with low, normal, and high light intensities at 5 and 15 °C. The expression of the HvCBF14 gene and two well-characterized members of the C-repeat binding factor (CBF)-regulon HvCOR14b and HvDHN5 were studied. In general, the expression level of the studied genes was several fold higher at 5 °C than that at 15 °C independently of the applied light intensity or the spectra. The complementary far-red (FR) illumination induced the expression of HvCBF14 and also its target gene HvCOR14b at both temperatures. However, this supplementation did not affect significantly the expression of HvDHN5. To test the physiological effects of these changes in environmental conditions, freezing tests were also performed. In all the cases, we found that the reduced R:FR ratio increased the frost tolerance of barley at every incident light intensity. These results show that the combined effects of cold, light intensity, and the modification of the R:FR light ratio can greatly influence the gene expression pattern of the plants, which can result in increased plant frost tolerance.

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Section: The Expression Of Hvcbf14 and Its Target Genes Hvcor14b And mentioning

confidence: 99%

Temperature and Light-Quality-Dependent Regulation of Freezing Tolerance in Barley

Ahres

Gierczik

Boldizsár

et al. 2020

Plants

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“…As illustrated by Lozano‐Juste & León (), such regulation of root growth is only one facet of a more global involvement of NO in light‐driven processes such as photomorphogenesis. Interestingly, there is evidence of tight interplays between low temperature and light pathways (Lindlöf ) and NO might therefore operate in aspects of cold response associated with light signalling. This should prompt further investigations into the possible functions of NO signalling during plant development at low temperature, including critical processes such as seed germination or flowering, which are regulated through cold‐ and light‐dependent processes.…”

Section: No and Plant Response To Coldmentioning

confidence: 99%

New clues for a cold case: nitric oxide response to low temperature

Puyaubert

Baudouin

2014

Plant Cell & Environment

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Low temperature is among the most frequent stresses met by plants during their lifespan, and a plant's ability to cold-acclimate is a determinant for further growth and development. Although intensive research has provided a good picture of the molecular and metabolic changes triggered by cold, the underlying regulatory mechanisms remain elusive and are thus being actively sought. Recent studies have shed light on the importance of nitric oxide (NO), a ubiquitous signalling molecule in eukaryotes, for plant tolerance to chilling and freezing. Indeed, NO formation following cold exposure has been reported in a range of plant species, and a series of proteins targeted by NO-based post-translational modifications have been identified. Moreover, key cold-regulated genes have been characterized as NO-dependent, suggesting the crucial importance of NO signalling for cold-responsive gene expression. This review provides a picture of our current understanding of the function of NO in the context of plant response to cold. Particular attention is dedicated to the open questions left by the fragmented data currently available concerning NO formation, transduction and biological significance for plant adaptation to low temperature.

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“…Light plays an important role in cold acclimation by accelerating the expression of cold regulated genes (CORs) in different species and phytochromes have been identi ed as important factors in the transcriptional control of CORs 33 . Three types of phytochromes such as phytochrome A (phyA), phytochrome B (phyB), and phytochrome C (phyC) were identi ed in the owering plants 34 that respond to radiation in the environment.…”

Section: Discussionmentioning

confidence: 99%

Functional Annotation of Transcripts Obtained from Fall-Grown Tall Fescue as Influenced by Endophyte Infection

Islam

Krom

Kwon

et al. 2021

Preprint

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Tall fescue is one of the primary source of forage for livestock. It grows well in the marginal soils of the temperate zones. It hosts a fungal endophyte (Epichloë coenophiala), which helps the plants to tolerate abiotic and biotic stresses. The genetics and biology underlying mechanism of freezing stress tolerance of tall fescue is still unknown, due to its complex genetic background and outbreeding modes of pollination, limited genomic, and transcriptomic resources. The aim of this study was to identify differentially expressed genes (DEGs) in two tissues between novel endophyte-positive (E+) and endophyte-free (E-) tall fescue genotypes at three diurnal time points; in the morning (-3.0 to 0.5°C), afternoon (11 to 12°C), and evening (12 − 10°C) in the field environment, by exploring the transcriptional landscape via RNA sequencing. For the first time, we generated 226,054 and 224,376 transcripts from E + and E- Texoma MaxQ II tall fescue, respectively by de novo assembly. The upregulated transcripts were detected fewer than the downregulated ones in both tissues (S: 803 up and 878 down; L: 783 up and 846 down) under the freezing temperatures in the morning. By Gene Ontology enrichment analysis, 10 GO terms were found only under the freezing stress in the morning. Metabolic pathway and biosynthesis of secondary metabolites genes showed lowest number of DEGs under morning freezing stress and highest number in evening cold condition by Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways analysis. The DEGs expressed under morning stress condition and the nine candidate genes that we identified using GO analysis, might be the possible route underlying cold tolerance in tall fescue.

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Interplay between low-temperature pathways and light reduction

Cited by 10 publications

References 96 publications

Temperature and Light-Quality-Dependent Regulation of Freezing Tolerance in Barley

Temperature and Light-Quality-Dependent Regulation of Freezing Tolerance in Barley

New clues for a cold case: nitric oxide response to low temperature

Functional Annotation of Transcripts Obtained from Fall-Grown Tall Fescue as Influenced by Endophyte Infection

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