Abstract
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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Claims 5
Claim · model-written summary
HvCBF14, HvCOR14b and HvDHN5 expression was severalfold higher at 5 °C than 15 °C across light conditions.
- Taxon
- Barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- 5 °Ce0
- Gene
- HvCBF14e1
- Outcome
- expression level of the studied genese0
- Direction
- highere0
- Comparator
- 15 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“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”
e1“HvCBF14 gene and two well-characterized members of the C-repeat binding factor (CBF)-regulon HvCOR14b and HvDHN5”
t0“Barley”
Claim · model-written summary
Far-red supplementation induced HvCBF14 expression at both temperatures.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- complementary far-red (FR) illuminatione0
- Gene
- HvCBF14e0
- Outcome
- expression of HvCBF14e0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The complementary far-red (FR) illumination induced the expression of HvCBF14 and also its target gene HvCOR14b at both temperatures”
t0“Barley”
Claim · model-written summary
Far-red supplementation induced HvCOR14b expression at both temperatures.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- complementary far-red (FR) illuminatione0
- Gene
- HvCOR14be0
- Outcome
- HvCOR14be0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The complementary far-red (FR) illumination induced the expression of HvCBF14 and also its target gene HvCOR14b at both temperatures”
t0“Barley”
Claim · model-written summary
Far-red supplementation did not significantly change HvDHN5 expression.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- complementary far-red (FR) illuminatione1
- Gene
- HvDHN5e0
- Outcome
- expression of HvDHN5e0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this supplementation did not affect significantly the expression of HvDHN5”
e1“complementary far-red (FR) illumination”
t0“Barley”
Claim · model-written summary
Reduced R:FR ratio increased barley frost tolerance at every incident light intensity.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- reduced R:FR ratioe0
- Outcome
- frost tolerancee0
- Direction
- increasede0
- Qualifier
- every incident light intensitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduced R:FR ratio increased the frost tolerance of barley at every incident light intensity”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.